From 800c0e509271260aaa01ef9facd6f6b249845179 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20D=C3=A4schle?= <daniel.daeschle@gmail.com>
Date: Wed, 4 Aug 2021 11:44:41 +0200
Subject: [PATCH] vlib: remove deprecated map{} usages as well as deprecated
 functions (#11035)

---
 cmd/tools/vdoc/html.v                         |  2 +-
 cmd/tools/vpm.v                               |  8 +-
 cmd/tools/vtest-parser.v                      |  2 +-
 doc/docs.md                                   | 20 ++---
 examples/bfs.v                                |  2 +-
 examples/sokol/05_instancing_glsl/rt_glsl.v   |  4 +-
 vlib/bitfield/bitfield.v                      | 16 ----
 vlib/builtin/array_test.v                     | 20 ++---
 vlib/builtin/map_of_floats_test.v             |  2 +-
 vlib/builtin/map_test.v                       | 86 +++++++++----------
 vlib/gx/color.v                               |  2 +-
 vlib/hash/wyhash.c.v                          |  2 +-
 vlib/io/reader.v                              | 10 ---
 vlib/json/json_test.v                         | 12 +--
 vlib/net/html/parser.v                        |  2 +-
 vlib/net/http/cookie_test.v                   | 26 +++---
 vlib/net/http/header.v                        |  2 +-
 vlib/net/http/header_test.v                   | 22 ++---
 vlib/net/http/http_httpbin_test.v             |  2 +-
 vlib/net/http/request_test.v                  | 16 ++--
 vlib/orm/orm.v                                |  2 +-
 vlib/v/ast/ast.v                              | 24 +++---
 vlib/v/checker/checker.v                      |  7 --
 .../alias_map_unknown_op_overloading_err.vv   |  4 +-
 .../checker/tests/array_or_map_assign_err.out |  4 +-
 .../checker/tests/array_or_map_assign_err.vv  |  4 +-
 .../tests/assign_expr_undefined_err_k.out     |  8 +-
 .../tests/assign_expr_undefined_err_k.vv      |  2 +-
 .../tests/for_in_map_one_variable_err.out     |  4 +-
 .../tests/for_in_map_one_variable_err.vv      |  2 +-
 vlib/v/checker/tests/for_in_mut_val_type.out  |  8 +-
 vlib/v/checker/tests/for_in_mut_val_type.vv   |  4 +-
 .../tests/import_symbol_private_err.out       | 18 ++--
 .../tests/import_symbol_private_err.vv        |  2 +-
 vlib/v/checker/tests/in_mismatch_type.out     | 10 +--
 vlib/v/checker/tests/in_mismatch_type.vv      |  2 +-
 vlib/v/checker/tests/map_delete.out           |  4 +-
 vlib/v/checker/tests/map_delete.vv            |  4 +-
 .../checker/tests/map_init_invalid_syntax.out |  8 +-
 .../checker/tests/map_init_invalid_syntax.vv  |  2 +-
 .../tests/map_init_key_duplicate_err.out      |  6 +-
 .../tests/map_init_key_duplicate_err.vv       |  4 +-
 vlib/v/checker/tests/map_init_wrong_type.out  | 30 +++----
 vlib/v/checker/tests/map_init_wrong_type.vv   |  6 +-
 .../tests/mut_map_get_value_address_err.out   |  4 +-
 .../tests/mut_map_get_value_address_err.vv    |  2 +-
 .../checker/tests/or_expr_types_mismatch.out  |  2 +-
 .../v/checker/tests/or_expr_types_mismatch.vv |  2 +-
 vlib/v/checker/tests/shared_bad_args.vv       |  4 +-
 .../tests/struct_short_init_warning.out       | 13 ---
 .../tests/struct_short_init_warning.vv        | 11 ---
 vlib/v/doc/doc.v                              |  2 +-
 vlib/v/fmt/fmt.v                              |  5 +-
 .../tests/array_init_comment_ending_keep.vv   |  2 +-
 vlib/v/fmt/tests/array_init_keep.vv           |  4 +-
 vlib/v/fmt/tests/comments_keep.vv             |  2 +-
 vlib/v/fmt/tests/empty_lines_keep.vv          |  2 +-
 .../tests/fn_return_generic_struct_keep.vv    |  2 +-
 .../tests/fn_trailing_arg_syntax_expected.vv  |  6 +-
 .../fmt/tests/fn_trailing_arg_syntax_input.vv | 10 +--
 .../fmt/tests/fn_trailing_arg_syntax_keep.vv  |  1 -
 vlib/v/fmt/tests/import_selective_expected.vv |  4 +-
 vlib/v/fmt/tests/import_selective_input.vv    |  4 +-
 vlib/v/fmt/tests/maps_expected.vv             |  4 +-
 vlib/v/fmt/tests/maps_keep.vv                 |  4 +-
 .../maps_of_fns_with_string_keys_keep.vv      |  2 +-
 vlib/v/gen/js/tests/array.v                   |  2 -
 vlib/v/gen/js/tests/js.v                      |  2 +-
 vlib/v/parser/expr.v                          | 30 +------
 vlib/v/parser/tests/for_in_mut_key_of_map.out |  2 +-
 vlib/v/parser/tests/for_in_mut_key_of_map.vv  |  2 +-
 vlib/v/parser/tests/or_default_missing.vv     |  2 +-
 vlib/v/parser/tests/struct_field_expected.out | 14 +--
 vlib/v/parser/tests/struct_field_expected.vv  |  6 +-
 vlib/v/pkgconfig/pkgconfig_test.v             |  4 +-
 vlib/v/tests/alias_custom_type_map_test.v     |  2 +-
 .../alias_map_operator_overloading_test.v     |  6 +-
 vlib/v/tests/anon_fn_in_containers_test.v     |  2 +-
 vlib/v/tests/array_append_short_struct_test.v |  2 +-
 vlib/v/tests/array_map_or_test.v              |  4 +-
 vlib/v/tests/array_sort_lt_overload_test.v    |  6 +-
 vlib/v/tests/array_to_string_test.v           |  4 +-
 vlib/v/tests/blank_ident_test.v               |  2 +-
 ...odule_functions_with_maps_of_arrays_test.v |  2 +-
 vlib/v/tests/cross_assign_test.v              | 10 +--
 vlib/v/tests/fn_index_direct_call_test.v      |  2 +-
 vlib/v/tests/fn_mut_args_test.v               |  4 +-
 .../for_in_containers_of_fixed_array_test.v   |  6 +-
 vlib/v/tests/for_in_mut_val_test.v            | 14 +--
 vlib/v/tests/for_label_continue_break_test.v  |  2 +-
 vlib/v/tests/for_loops_test.v                 |  4 +-
 vlib/v/tests/generic_fn_infer_map_test.v      | 12 +--
 .../tests/generic_fn_infer_multi_paras_test.v |  2 +-
 .../generics_return_generics_struct_test.v    |  4 +-
 ..._inconsistent_types_generics_struct_test.v |  4 +-
 ...ics_return_multiple_generics_struct_test.v |  2 +-
 vlib/v/tests/generics_test.v                  |  8 +-
 vlib/v/tests/if_guard_test.v                  |  4 +-
 vlib/v/tests/in_expression_test.v             | 12 +--
 vlib/v/tests/init_global_test.v               |  2 +-
 vlib/v/tests/inout/cli_command_no_execute.vv  |  6 +-
 vlib/v/tests/interface_auto_str_gen_test.v    |  2 +-
 vlib/v/tests/interop_test.v                   |  4 +-
 vlib/v/tests/map_alias_key_test.v             |  8 +-
 vlib/v/tests/map_and_array_with_fns_test.v    | 12 +--
 .../map_assign_array_of_interface_test.v      |  2 +-
 vlib/v/tests/map_complex_fixed_array_test.v   | 16 ++--
 vlib/v/tests/map_equality_test.v              | 14 +--
 vlib/v/tests/map_key_expr_test.v              |  4 +-
 vlib/v/tests/map_literals_method_call_test.v  |  4 +-
 vlib/v/tests/map_to_string_test.v             |  4 +-
 vlib/v/tests/map_type_alias_test.v            |  2 +-
 vlib/v/tests/maps_equal_test.v                |  4 +-
 vlib/v/tests/match_compound_type_cond_test.v  |  4 +-
 vlib/v/tests/match_in_map_init_test.v         |  4 +-
 vlib/v/tests/match_in_map_or_expr_test.v      |  2 +-
 vlib/v/tests/missing_config_struct_arg_test.v |  2 +-
 vlib/v/tests/mut_test.v                       | 10 +--
 vlib/v/tests/shared_arg_test.v                |  4 +-
 vlib/v/tests/shared_autolock_test.v           |  2 +-
 vlib/v/tests/shared_elem_test.v               |  2 +-
 vlib/v/tests/shared_lock_expr_test.v          |  2 +-
 vlib/v/tests/shared_map_test.v                | 10 +--
 vlib/v/tests/str_gen_test.v                   | 12 +--
 .../v/tests/string_interpolation_alias_test.v |  2 +-
 .../v/tests/string_interpolation_array_test.v |  4 +-
 .../string_interpolation_function_test.v      |  2 +-
 .../string_interpolation_multistmt_test.v     |  2 +-
 .../tests/string_interpolation_shared_test.v  |  4 +-
 .../tests/string_interpolation_struct_test.v  |  2 +-
 vlib/v/tests/struct_test.v                    |  8 +-
 .../sumtype_str_for_subtypes_with_str_test.v  |  2 +-
 vlib/v/tests/tmpl_test.v                      |  4 +-
 vlib/v/tests/valgrind/1.strings_and_arrays.v  |  2 +-
 vlib/v/util/util.v                            |  2 +-
 vlib/vweb/request_test.v                      | 16 ++--
 vlib/vweb/tests/vweb_test.v                   |  2 +-
 vlib/vweb/vweb.v                              |  6 +-
 vlib/x/json2/any_test.v                       |  4 +-
 vlib/x/json2/json2.v                          |  2 +-
 vlib/x/json2/json2_test.v                     |  4 +-
 vlib/x/json2/scanner.v                        |  2 +-
 142 files changed, 410 insertions(+), 501 deletions(-)
 delete mode 100644 vlib/v/checker/tests/struct_short_init_warning.out
 delete mode 100644 vlib/v/checker/tests/struct_short_init_warning.vv

diff --git a/cmd/tools/vdoc/html.v b/cmd/tools/vdoc/html.v
index e253898875..675182cc4a 100644
--- a/cmd/tools/vdoc/html.v
+++ b/cmd/tools/vdoc/html.v
@@ -134,7 +134,7 @@ fn (vd VDoc) render_search_index(out Output) {
 }
 
 fn (mut vd VDoc) render_static_html(out Output) {
-	vd.assets = map{
+	vd.assets = {
 		'doc_css':       vd.get_resource(css_js_assets[0], out)
 		'normalize_css': vd.get_resource(css_js_assets[1], out)
 		'doc_js':        vd.get_resource(css_js_assets[2], out)
diff --git a/cmd/tools/vpm.v b/cmd/tools/vpm.v
index a503d249fd..139486c1c4 100644
--- a/cmd/tools/vpm.v
+++ b/cmd/tools/vpm.v
@@ -17,15 +17,15 @@ const (
 	excluded_dirs             = ['cache', 'vlib']
 	supported_vcs_systems     = ['git', 'hg']
 	supported_vcs_folders     = ['.git', '.hg']
-	supported_vcs_update_cmds = map{
+	supported_vcs_update_cmds = {
 		'git': 'git pull'
 		'hg':  'hg pull --update'
 	}
-	supported_vcs_install_cmds = map{
+	supported_vcs_install_cmds = {
 		'git': 'git clone --depth=1'
 		'hg':  'hg clone'
 	}
-	supported_vcs_outdated_steps = map{
+	supported_vcs_outdated_steps = {
 		'git': ['git fetch', 'git rev-parse @', 'git rev-parse @{u}']
 		'hg':  ['hg incoming']
 	}
@@ -467,7 +467,7 @@ fn resolve_dependencies(name string, module_path string, module_names []string)
 
 fn parse_vmod(data string) Vmod {
 	keys := ['name', 'version', 'deps']
-	mut m := map{
+	mut m := {
 		'name':    ''
 		'version': ''
 		'deps':    ''
diff --git a/cmd/tools/vtest-parser.v b/cmd/tools/vtest-parser.v
index e1e829ae6f..2743d2dabf 100644
--- a/cmd/tools/vtest-parser.v
+++ b/cmd/tools/vtest-parser.v
@@ -12,7 +12,7 @@ const (
 	support_color = term.can_show_color_on_stderr() && term.can_show_color_on_stdout()
 	ecode_timeout = 101
 	ecode_memout  = 102
-	ecode_details = map{
+	ecode_details = {
 		-1:  'worker executable not found'
 		101: 'too slow'
 		102: 'too memory hungry'
diff --git a/doc/docs.md b/doc/docs.md
index 8fbaa2dba8..057a4cfaf9 100644
--- a/doc/docs.md
+++ b/doc/docs.md
@@ -1042,7 +1042,7 @@ Maps can have keys of type string, rune, integer, float or voidptr.
 
 The whole map can be initialized using this short syntax:
 ```v
-numbers := map{
+numbers := {
 	'one': 1
 	'two': 2
 }
@@ -1052,14 +1052,14 @@ println(numbers)
 If a key is not found, a zero value is returned by default:
 
 ```v
-sm := map{
+sm := {
 	'abc': 'xyz'
 }
 val := sm['bad_key']
 println(val) // ''
 ```
 ```v
-intm := map{
+intm := {
 	1: 1234
 	2: 5678
 }
@@ -1306,7 +1306,7 @@ To do the opposite, use `!in`.
 nums := [1, 2, 3]
 println(1 in nums) // true
 println(4 !in nums) // true
-m := map{
+m := {
 	'one': 1
 	'two': 2
 }
@@ -1421,7 +1421,7 @@ The code above prints:
 ##### Map `for`
 
 ```v
-m := map{
+m := {
 	'one': 1
 	'two': 2
 }
@@ -1434,7 +1434,7 @@ for key, value in m {
 
 Either key or value can be ignored by using a single underscore as the identifier.
 ```v
-m := map{
+m := {
 	'one': 1
 	'two': 2
 }
@@ -1783,7 +1783,7 @@ mut p := Point{
 	y: 20
 }
 // you can omit the struct name when it's already known
-p = {
+p = Point{
 	x: 30
 	y: 4
 }
@@ -1935,7 +1935,7 @@ clr1 := Rgba32{
 }
 
 clr2 := Rgba32{
-	Rgba32_Component: {
+	Rgba32_Component: Rgba32_Component{
 		a: 128
 	}
 }
@@ -2029,7 +2029,7 @@ struct User {
 }
 
 fn register(u User) User {
-	return {
+	return User{
 		...u
 		is_registered: true
 	}
@@ -2095,7 +2095,7 @@ fn main() {
 	// You can even have an array/map of functions:
 	fns := [sqr, cube]
 	println(fns[0](10)) // "100"
-	fns_map := map{
+	fns_map := {
 		'sqr':  sqr
 		'cube': cube
 	}
diff --git a/examples/bfs.v b/examples/bfs.v
index b92763ebc5..ff20fdf867 100644
--- a/examples/bfs.v
+++ b/examples/bfs.v
@@ -26,7 +26,7 @@ fn breadth_first_search_path(graph map[string][]string, vertex string, target st
 }
 
 fn main() {
-	graph := map{
+	graph := {
 		'A': ['B', 'C']
 		'B': ['A', 'D', 'E']
 		'C': ['A', 'F']
diff --git a/examples/sokol/05_instancing_glsl/rt_glsl.v b/examples/sokol/05_instancing_glsl/rt_glsl.v
index f06a8e3aa9..6c32fd5334 100644
--- a/examples/sokol/05_instancing_glsl/rt_glsl.v
+++ b/examples/sokol/05_instancing_glsl/rt_glsl.v
@@ -503,7 +503,7 @@ fn main(){
 		gg: 0
 	}
 
-	app.gg = gg.new_context({
+	app.gg = gg.new_context(
 		width:         win_width
 		height:        win_height
 		create_window: true
@@ -514,7 +514,7 @@ fn main(){
 		init_fn:       my_init
 		cleanup_fn:    cleanup
 		event_fn:      my_event_manager
-	})
+	)
 
 	app.ticks = time.ticks()
 	app.gg.run()
diff --git a/vlib/bitfield/bitfield.v b/vlib/bitfield/bitfield.v
index 9ed4e2bdd5..35ac552801 100644
--- a/vlib/bitfield/bitfield.v
+++ b/vlib/bitfield/bitfield.v
@@ -338,22 +338,6 @@ pub fn (instance BitField) clone() BitField {
 	return output
 }
 
-// cmp compares two bit arrays bit by bit and returns 'true' if they are
-// identical by length and contents and 'false' otherwise.
-[deprecated: 'use a == b instead']
-[deprecated_after: '2021-06-29']
-pub fn (instance BitField) cmp(input BitField) bool {
-	if instance.size != input.size {
-		return false
-	}
-	for i in 0 .. zbitnslots(instance.size) {
-		if instance.field[i] != input.field[i] {
-			return false
-		}
-	}
-	return true
-}
-
 pub fn (a BitField) == (b BitField) bool {
 	if a.size != b.size {
 		return false
diff --git a/vlib/builtin/array_test.v b/vlib/builtin/array_test.v
index 288a884011..24ca54d538 100644
--- a/vlib/builtin/array_test.v
+++ b/vlib/builtin/array_test.v
@@ -745,13 +745,13 @@ fn test_eq() {
 		age: 22
 		name: 'bob'
 	}]
-	assert [map{
+	assert [{
 		'bob': 22
-	}, map{
+	}, {
 		'tom': 33
-	}] == [map{
+	}] == [{
 		'bob': 22
-	}, map{
+	}, {
 		'tom': 33
 	}]
 	assert [[1, 2, 3], [4]] == [[1, 2, 3], [4]]
@@ -1315,20 +1315,20 @@ fn test_struct_array_of_multi_type_in() {
 	ivan := Person{
 		name: 'ivan'
 		nums: [1, 2, 3]
-		kv: map{
+		kv: {
 			'aaa': '111'
 		}
 	}
 	people := [Person{
 		name: 'ivan'
 		nums: [1, 2, 3]
-		kv: map{
+		kv: {
 			'aaa': '111'
 		}
 	}, Person{
 		name: 'bob'
 		nums: [2]
-		kv: map{
+		kv: {
 			'bbb': '222'
 		}
 	}]
@@ -1340,20 +1340,20 @@ fn test_struct_array_of_multi_type_index() {
 	ivan := Person{
 		name: 'ivan'
 		nums: [1, 2, 3]
-		kv: map{
+		kv: {
 			'aaa': '111'
 		}
 	}
 	people := [Person{
 		name: 'ivan'
 		nums: [1, 2, 3]
-		kv: map{
+		kv: {
 			'aaa': '111'
 		}
 	}, Person{
 		name: 'bob'
 		nums: [2]
-		kv: map{
+		kv: {
 			'bbb': '222'
 		}
 	}]
diff --git a/vlib/builtin/map_of_floats_test.v b/vlib/builtin/map_of_floats_test.v
index 3906cb1288..7481107928 100644
--- a/vlib/builtin/map_of_floats_test.v
+++ b/vlib/builtin/map_of_floats_test.v
@@ -12,7 +12,7 @@ fn test_map_of_f32() {
 }
 
 fn test_map_of_f64() {
-	mut m64 := map{
+	mut m64 := {
 		3.14: 'pi'
 	}
 	m64[1.0] = 'one'
diff --git a/vlib/builtin/map_test.v b/vlib/builtin/map_test.v
index 9c50ab73ed..f186dd5a59 100644
--- a/vlib/builtin/map_test.v
+++ b/vlib/builtin/map_test.v
@@ -130,7 +130,7 @@ fn test_map() {
 fn test_map_init() {
 	one := 'one'
 	three := 'three'
-	m := map{
+	m := {
 		one:   1
 		'two': 2
 		three: 1 + 2
@@ -346,25 +346,25 @@ fn test_map_assign() {
 	mut a := map[string]f64{}
 	mut b := map[string]int{}
 	mut c := map[string]u16{}
-	a = map{
+	a = {
 		'x': 12.4
 		'y': 3
 	}
-	b = map{
+	b = {
 		'u': -13
 		'v': 12
 	}
-	c = map{
+	c = {
 		's': u16(5)
 		't': 3
 	}
-	_ := Mstruct1{map{
+	_ := Mstruct1{{
 		'p': 12
 	}}
-	_ := Mstruct2{map{
+	_ := Mstruct2{{
 		'q': 1.7
 	}}
-	_ := Mstruct3{map{
+	_ := Mstruct3{{
 		'r': u16(6)
 		's': 5
 	}}
@@ -398,7 +398,7 @@ fn test_assign_directly() {
 }
 
 fn test_map_in_directly() {
-	for k, v in map{
+	for k, v in {
 		'aa': 1
 	} {
 		assert k == 'aa'
@@ -407,7 +407,7 @@ fn test_map_in_directly() {
 }
 
 fn test_plus_assign_string() {
-	mut m := map{
+	mut m := {
 		'one': ''
 	}
 	m['one'] += '1'
@@ -416,7 +416,7 @@ fn test_plus_assign_string() {
 }
 
 fn test_map_keys_to_array() {
-	m := map{
+	m := {
 		'a': 'b'
 		'c': 'd'
 	}
@@ -436,7 +436,7 @@ fn map_in_mut(mut m map[string]int) {
 }
 
 fn test_map_in_mut() {
-	mut m := map{
+	mut m := {
 		'one': 1
 	}
 	map_in_mut(mut m)
@@ -444,7 +444,7 @@ fn test_map_in_mut() {
 }
 
 fn test_map_in() {
-	m := map{
+	m := {
 		'Foo': 'bar'
 	}
 	if 'foo'.capitalize() in m {
@@ -476,7 +476,7 @@ fn mut_map_with_relation_op_in_fn(mut m map[string]int) {
 }
 
 fn test_mut_map_with_relation_op_in_fn() {
-	mut m := map{
+	mut m := {
 		'one': 1
 		'two': 2
 	}
@@ -490,7 +490,7 @@ fn test_mut_map_with_relation_op_in_fn() {
 }
 
 fn test_map_str_after_delete() {
-	mut m := map{
+	mut m := {
 		'first':  1
 		'second': 2
 		'third':  3
@@ -504,7 +504,7 @@ fn test_map_str_after_delete() {
 }
 
 fn test_modify_map_value() {
-	mut m1 := map{
+	mut m1 := {
 		'foo': 3
 		'bar': -7
 	}
@@ -515,7 +515,7 @@ fn test_modify_map_value() {
 }
 
 fn test_map_clone() {
-	mut nums := map{
+	mut nums := {
 		'foo': 1
 		'bar': 2
 	}
@@ -542,7 +542,7 @@ fn test_map_default_zero() {
 }
 
 fn test_map_or() {
-	m := map{
+	m := {
 		'first':  1
 		'second': 2
 		'third':  3
@@ -561,7 +561,7 @@ fn test_int_keys() {
 	m[5] += 24
 	m[5]++
 	assert m[5] == 25
-	mut m2 := map{
+	mut m2 := {
 		3: 9
 		4: 16
 		5: 25
@@ -577,7 +577,7 @@ fn test_int_keys() {
 	assert m2[5] == 0
 	assert m2.keys() == []
 
-	m2 = map{
+	m2 = {
 		3: 9
 		4: 16
 		5: 25
@@ -598,7 +598,7 @@ fn test_int_keys() {
 	}
 	assert all == [3, 9, 4, 16, 5, 25]
 
-	mut m3 := map{
+	mut m3 := {
 		1: 'one'
 		2: 'two'
 	}
@@ -639,7 +639,7 @@ fn test_voidptr_keys() {
 }
 
 fn test_rune_keys() {
-	mut m := map{
+	mut m := {
 		`!`: 2
 		`%`: 3
 	}
@@ -659,62 +659,62 @@ fn test_rune_keys() {
 }
 
 fn test_eq() {
-	a := map{
+	a := {
 		'a': 1
 		'b': 2
 	}
-	assert a == map{
+	assert a == {
 		'a': 1
 		'b': 2
 	}
-	b := map{
+	b := {
 		'a': [[1]]
 		'b': [[2]]
 	}
-	assert b == map{
+	assert b == {
 		'a': [[1]]
 		'b': [[2]]
 	}
-	c := map{
-		'a': map{
+	c := {
+		'a': {
 			'11': 1
 		}
-		'b': map{
+		'b': {
 			'22': 2
 		}
 	}
-	assert c == map{
-		'a': map{
+	assert c == {
+		'a': {
 			'11': 1
 		}
-		'b': map{
+		'b': {
 			'22': 2
 		}
 	}
-	d := map{
+	d := {
 		'a': MValue{
 			name: 'aa'
-			misc: map{
+			misc: {
 				'11': '1'
 			}
 		}
 		'b': MValue{
 			name: 'bb'
-			misc: map{
+			misc: {
 				'22': '2'
 			}
 		}
 	}
-	assert d == map{
+	assert d == {
 		'a': MValue{
 			name: 'aa'
-			misc: map{
+			misc: {
 				'11': '1'
 			}
 		}
 		'b': MValue{
 			name: 'bb'
-			misc: map{
+			misc: {
 				'22': '2'
 			}
 		}
@@ -722,31 +722,31 @@ fn test_eq() {
 }
 
 fn test_non_string_key_map_str() {
-	assert map{
+	assert {
 		23: 4
 	}.str() == '{23: 4}'
-	assert map{
+	assert {
 		`a`: 12
 		`b`: 13
 	}.str() == '{`a`: 12, `b`: 13}'
-	assert map{
+	assert {
 		23: 'foo'
 		25: 'bar'
 	}.str() == "{23: 'foo', 25: 'bar'}"
 }
 
 fn test_map_assign_empty_map_init() {
-	mut a := map{
+	mut a := {
 		'one': 1
 	}
-	a = map{}
+	a = {}
 	println(a)
 	assert a == map[string]int{}
 	assert '$a' == '{}'
 }
 
 fn test_in_map_literal() {
-	assert 1 in map{
+	assert 1 in {
 		1: 'one'
 	}
 }
diff --git a/vlib/gx/color.v b/vlib/gx/color.v
index eefebb8c21..e50d9325db 100644
--- a/vlib/gx/color.v
+++ b/vlib/gx/color.v
@@ -205,7 +205,7 @@ pub fn (c Color) abgr8() int {
 }
 
 const (
-	string_colors = map{
+	string_colors = {
 		'blue':        blue
 		'red':         red
 		'green':       green
diff --git a/vlib/hash/wyhash.c.v b/vlib/hash/wyhash.c.v
index 758af0306b..164ebeecb8 100644
--- a/vlib/hash/wyhash.c.v
+++ b/vlib/hash/wyhash.c.v
@@ -7,7 +7,7 @@ fn C.wyhash(&byte, u64, u64, &u64) u64
 fn C.wyhash64(u64, u64) u64
 
 fn init() {
-	_ := map{
+	_ := {
 		1: 1
 	}
 }
diff --git a/vlib/io/reader.v b/vlib/io/reader.v
index b7377b0872..61f566f46c 100644
--- a/vlib/io/reader.v
+++ b/vlib/io/reader.v
@@ -9,16 +9,6 @@ pub interface Reader {
 	read(mut buf []byte) ?int
 }
 
-// make_reader is a temp that converts a type to a reader
-// (e.g. for use in struct initialisation)
-// (this shouldnt need to be a thing but until coercion gets made better
-// it is required)
-[deprecated: 'use just `x` instead of `io.make_reader(x)`. Interfaces are now checked against all types.']
-[deprecated_after: '2021-05-27']
-pub fn make_reader(r Reader) Reader {
-	return r
-}
-
 const (
 	read_all_len      = 10 * 1024
 	read_all_grow_len = 1024
diff --git a/vlib/json/json_test.v b/vlib/json/json_test.v
index 8191462eeb..f10db853bb 100644
--- a/vlib/json/json_test.v
+++ b/vlib/json/json_test.v
@@ -151,7 +151,7 @@ fn test_struct_in_struct() ? {
 
 fn test_encode_map() {
 	expected := '{"one":1,"two":2,"three":3,"four":4}'
-	numbers := map{
+	numbers := {
 		'one':   1
 		'two':   2
 		'three': 3
@@ -163,7 +163,7 @@ fn test_encode_map() {
 }
 
 fn test_parse_map() ? {
-	expected := map{
+	expected := {
 		'one':   1
 		'two':   2
 		'three': 3
@@ -193,7 +193,7 @@ fn test_nested_type() ? {
 				cities: [City{'Donlon'}, City{'Termanches'}]
 			},
 		]
-		users: map{
+		users: {
 			'Foo': User{
 				age: 10
 				nums: [1, 2, 3]
@@ -211,14 +211,14 @@ fn test_nested_type() ? {
 				pets: 'little boo'
 			}
 		}
-		extra: map{
-			'2': map{
+		extra: {
+			'2': {
 				'n1': 2
 				'n2': 4
 				'n3': 8
 				'n4': 16
 			}
-			'3': map{
+			'3': {
 				'n1': 3
 				'n2': 9
 				'n3': 27
diff --git a/vlib/net/html/parser.v b/vlib/net/html/parser.v
index b9ad2a1266..461c145bc1 100644
--- a/vlib/net/html/parser.v
+++ b/vlib/net/html/parser.v
@@ -14,7 +14,7 @@ mut:
 	opened_code_type string
 	line_count       int
 	lexeme_builder   strings.Builder = strings.new_builder(100)
-	code_tags        map[string]bool = map{
+	code_tags        map[string]bool = {
 		'script': true
 		'style':  true
 	}
diff --git a/vlib/net/http/cookie_test.v b/vlib/net/http/cookie_test.v
index 3806618fb8..6a0c0cd8ff 100644
--- a/vlib/net/http/cookie_test.v
+++ b/vlib/net/http/cookie_test.v
@@ -257,7 +257,7 @@ const (
 	]
 	read_set_cookies_tests = [
 		ReadSetCookiesTestCase{
-			header: map{
+			header: {
 				'Set-Cookie': ['Cookie-1=v1']
 			}
 			cookies: [&http.Cookie{
@@ -292,7 +292,7 @@ const (
 		// 	}]
 		// },
 		ReadSetCookiesTestCase{
-			header: map{
+			header: {
 				'Set-Cookie': ['ASP.NET_SessionId=foo; path=/; HttpOnly']
 			}
 			cookies: [
@@ -306,7 +306,7 @@ const (
 			]
 		},
 		ReadSetCookiesTestCase{
-			header: map{
+			header: {
 				'Set-Cookie': ['samesitedefault=foo; SameSite']
 			}
 			cookies: [
@@ -319,7 +319,7 @@ const (
 			]
 		},
 		ReadSetCookiesTestCase{
-			header: map{
+			header: {
 				'Set-Cookie': ['samesitelax=foo; SameSite=Lax']
 			}
 			cookies: [
@@ -332,7 +332,7 @@ const (
 			]
 		},
 		ReadSetCookiesTestCase{
-			header: map{
+			header: {
 				'Set-Cookie': ['samesitestrict=foo; SameSite=Strict']
 			}
 			cookies: [
@@ -345,7 +345,7 @@ const (
 			]
 		},
 		ReadSetCookiesTestCase{
-			header: map{
+			header: {
 				'Set-Cookie': ['samesitenone=foo; SameSite=None']
 			}
 			cookies: [
@@ -360,7 +360,7 @@ const (
 		// Make sure we can properly read back the Set-Cookie headers we create
 		// for values containing spaces or commas:
 		ReadSetCookiesTestCase{
-			header: map{
+			header: {
 				'Set-Cookie': ['special-1=a z']
 			}
 			cookies: [
@@ -372,7 +372,7 @@ const (
 			]
 		},
 		ReadSetCookiesTestCase{
-			header: map{
+			header: {
 				'Set-Cookie': ['special-2=" z"']
 			}
 			cookies: [
@@ -384,7 +384,7 @@ const (
 			]
 		},
 		ReadSetCookiesTestCase{
-			header: map{
+			header: {
 				'Set-Cookie': ['special-3="a "']
 			}
 			cookies: [
@@ -396,7 +396,7 @@ const (
 			]
 		},
 		ReadSetCookiesTestCase{
-			header: map{
+			header: {
 				'Set-Cookie': ['special-4=" "']
 			}
 			cookies: [
@@ -408,7 +408,7 @@ const (
 			]
 		},
 		ReadSetCookiesTestCase{
-			header: map{
+			header: {
 				'Set-Cookie': ['special-5=a,z']
 			}
 			cookies: [
@@ -420,7 +420,7 @@ const (
 			]
 		},
 		ReadSetCookiesTestCase{
-			header: map{
+			header: {
 				'Set-Cookie': ['special-6=",z"']
 			}
 			cookies: [
@@ -432,7 +432,7 @@ const (
 			]
 		},
 		ReadSetCookiesTestCase{
-			header: map{
+			header: {
 				'Set-Cookie': ['special-7=","']
 			}
 			cookies: [
diff --git a/vlib/net/http/header.v b/vlib/net/http/header.v
index e96563ec5e..dadf13305b 100644
--- a/vlib/net/http/header.v
+++ b/vlib/net/http/header.v
@@ -216,7 +216,7 @@ pub fn (h CommonHeader) str() string {
 	}
 }
 
-const common_header_map = map{
+const common_header_map = {
 	'accept':                              CommonHeader.accept
 	'accept-ch':                           .accept_ch
 	'accept-charset':                      .accept_charset
diff --git a/vlib/net/http/header_test.v b/vlib/net/http/header_test.v
index 3740d8afcd..55eb2bedc3 100644
--- a/vlib/net/http/header_test.v
+++ b/vlib/net/http/header_test.v
@@ -276,7 +276,7 @@ fn test_str() ? {
 }
 
 fn test_header_from_map() ? {
-	h := new_header_from_map(map{
+	h := new_header_from_map({
 		CommonHeader.accept:  'nothing'
 		CommonHeader.expires: 'yesterday'
 	})
@@ -287,7 +287,7 @@ fn test_header_from_map() ? {
 }
 
 fn test_custom_header_from_map() ? {
-	h := new_custom_header_from_map(map{
+	h := new_custom_header_from_map({
 		'Server': 'VWeb'
 		'foo':    'bar'
 	}) ?
@@ -298,11 +298,11 @@ fn test_custom_header_from_map() ? {
 }
 
 fn test_header_join() ? {
-	h1 := new_header_from_map(map{
+	h1 := new_header_from_map({
 		CommonHeader.accept:  'nothing'
 		CommonHeader.expires: 'yesterday'
 	})
-	h2 := new_custom_header_from_map(map{
+	h2 := new_custom_header_from_map({
 		'Server': 'VWeb'
 		'foo':    'bar'
 	}) ?
@@ -329,27 +329,27 @@ fn parse_headers_test(s string, expected map[string]string) ? {
 }
 
 fn test_parse_headers() ? {
-	parse_headers_test('foo: bar', map{
+	parse_headers_test('foo: bar', {
 		'foo': 'bar'
 	}) ?
-	parse_headers_test('foo: \t  bar', map{
+	parse_headers_test('foo: \t  bar', {
 		'foo': 'bar'
 	}) ?
-	parse_headers_test('foo: bar\r\n\tbaz', map{
+	parse_headers_test('foo: bar\r\n\tbaz', {
 		'foo': 'bar baz'
 	}) ?
-	parse_headers_test('foo: bar \r\n\tbaz\r\n   buzz', map{
+	parse_headers_test('foo: bar \r\n\tbaz\r\n   buzz', {
 		'foo': 'bar baz buzz'
 	}) ?
-	parse_headers_test('foo: bar\r\nbar:baz', map{
+	parse_headers_test('foo: bar\r\nbar:baz', {
 		'foo': 'bar'
 		'bar': 'baz'
 	}) ?
-	parse_headers_test('foo: bar\r\nbar:baz\r\n', map{
+	parse_headers_test('foo: bar\r\nbar:baz\r\n', {
 		'foo': 'bar'
 		'bar': 'baz'
 	}) ?
-	parse_headers_test('foo: bar\r\nbar:baz\r\n\r\n', map{
+	parse_headers_test('foo: bar\r\nbar:baz\r\n\r\n', {
 		'foo': 'bar'
 		'bar': 'baz'
 	}) ?
diff --git a/vlib/net/http/http_httpbin_test.v b/vlib/net/http/http_httpbin_test.v
index 20230992a0..e40778d8a0 100644
--- a/vlib/net/http/http_httpbin_test.v
+++ b/vlib/net/http/http_httpbin_test.v
@@ -59,7 +59,7 @@ fn test_http_fetch_with_params() {
 		return
 	}
 	responses := http_fetch_mock([],
-		params: map{
+		params: {
 			'a': 'b'
 			'c': 'd'
 		}
diff --git a/vlib/net/http/request_test.v b/vlib/net/http/request_test.v
index d0baf51dd0..3950ad80a3 100644
--- a/vlib/net/http/request_test.v
+++ b/vlib/net/http/request_test.v
@@ -71,27 +71,27 @@ fn test_parse_request_line() {
 }
 
 fn test_parse_form() {
-	assert parse_form('foo=bar&bar=baz') == map{
+	assert parse_form('foo=bar&bar=baz') == {
 		'foo': 'bar'
 		'bar': 'baz'
 	}
-	assert parse_form('foo=bar=&bar=baz') == map{
+	assert parse_form('foo=bar=&bar=baz') == {
 		'foo': 'bar='
 		'bar': 'baz'
 	}
-	assert parse_form('foo=bar%3D&bar=baz') == map{
+	assert parse_form('foo=bar%3D&bar=baz') == {
 		'foo': 'bar='
 		'bar': 'baz'
 	}
-	assert parse_form('foo=b%26ar&bar=baz') == map{
+	assert parse_form('foo=b%26ar&bar=baz') == {
 		'foo': 'b&ar'
 		'bar': 'baz'
 	}
-	assert parse_form('a=b& c=d') == map{
+	assert parse_form('a=b& c=d') == {
 		'a':  'b'
 		' c': 'd'
 	}
-	assert parse_form('a=b&c= d ') == map{
+	assert parse_form('a=b&c= d ') == {
 		'a': 'b'
 		'c': ' d '
 	}
@@ -115,7 +115,7 @@ ${contents[1]}
 --------------------------$boundary--
 "
 	form, files := parse_multipart_form(data, boundary)
-	assert files == map{
+	assert files == {
 		names[0]: [FileData{
 			filename: file
 			content_type: ct
@@ -123,7 +123,7 @@ ${contents[1]}
 		}]
 	}
 
-	assert form == map{
+	assert form == {
 		names[1]: contents[1]
 	}
 }
diff --git a/vlib/orm/orm.v b/vlib/orm/orm.v
index 589031adf4..13f833809b 100644
--- a/vlib/orm/orm.v
+++ b/vlib/orm/orm.v
@@ -8,7 +8,7 @@ pub const (
 	float    = [13, 14]
 	string   = 18
 	time     = -2
-	type_idx = map{
+	type_idx = {
 		'i8':     5
 		'i16':    6
 		'int':    7
diff --git a/vlib/v/ast/ast.v b/vlib/v/ast/ast.v
index a34423e7df..44a6eb9848 100644
--- a/vlib/v/ast/ast.v
+++ b/vlib/v/ast/ast.v
@@ -1213,7 +1213,7 @@ pub:
 pub const (
 	// reference: https://en.wikipedia.org/wiki/X86#/media/File:Table_of_x86_Registers_svg.svg
 	// map register size -> register name
-	x86_no_number_register_list = map{
+	x86_no_number_register_list = {
 		8:  ['al', 'ah', 'bl', 'bh', 'cl', 'ch', 'dl', 'dh', 'bpl', 'sil', 'dil', 'spl']
 		16: ['ax', 'bx', 'cx', 'dx', 'bp', 'si', 'di', 'sp', /* segment registers */ 'cs', 'ss',
 			'ds', 'es', 'fs', 'gs', 'flags', 'ip', /* task registers */ 'gdtr', 'idtr', 'tr', 'ldtr',
@@ -1240,32 +1240,32 @@ pub const (
 	// st#: floating point numbers
 	// cr#: control/status registers
 	// dr#: debug registers
-	x86_with_number_register_list = map{
-		8:   map{
+	x86_with_number_register_list = {
+		8:   {
 			'r#b': 16
 		}
-		16:  map{
+		16:  {
 			'r#w': 16
 		}
-		32:  map{
+		32:  {
 			'r#d': 16
 		}
-		64:  map{
+		64:  {
 			'r#':  16
 			'mm#': 16
 			'cr#': 16
 			'dr#': 16
 		}
-		80:  map{
+		80:  {
 			'st#': 16
 		}
-		128: map{
+		128: {
 			'xmm#': 32
 		}
-		256: map{
+		256: {
 			'ymm#': 32
 		}
-		512: map{
+		512: {
 			'zmm#': 32
 		}
 	}
@@ -1277,14 +1277,14 @@ pub const (
 		'sp' /* aka r13 */, 'lr' /* aka r14 */, /* this is instruction pointer ('program counter'): */
 		'pc' /* aka r15 */,
 	] // 'cpsr' and 'apsr' are special flags registers, but cannot be referred to directly
-	arm_with_number_register_list = map{
+	arm_with_number_register_list = {
 		'r#': 16
 	}
 )
 
 pub const (
 	riscv_no_number_register_list   = ['zero', 'ra', 'sp', 'gp', 'tp']
-	riscv_with_number_register_list = map{
+	riscv_with_number_register_list = {
 		'x#': 32
 		't#': 3
 		's#': 12
diff --git a/vlib/v/checker/checker.v b/vlib/v/checker/checker.v
index 3090585341..4d7f431d20 100644
--- a/vlib/v/checker/checker.v
+++ b/vlib/v/checker/checker.v
@@ -1338,13 +1338,6 @@ pub fn (mut c Checker) infix_expr(mut node ast.InfixExpr) ast.Type {
 					}
 					node.left_type = map_info.key_type
 				}
-				.string {
-					c.warn('use `str.contains(substr)` instead of `substr in str`', left_right_pos)
-					c.check_expected(left_type, right_type) or {
-						c.error('left operand to `$node.op` does not match: $err.msg',
-							left_right_pos)
-					}
-				}
 				else {
 					c.error('`$node.op.str()` can only be used with an array/map/string',
 						node.pos)
diff --git a/vlib/v/checker/tests/alias_map_unknown_op_overloading_err.vv b/vlib/v/checker/tests/alias_map_unknown_op_overloading_err.vv
index bea0261c8b..e1332f8359 100644
--- a/vlib/v/checker/tests/alias_map_unknown_op_overloading_err.vv
+++ b/vlib/v/checker/tests/alias_map_unknown_op_overloading_err.vv
@@ -1,14 +1,14 @@
 type Map = map[string]string
 
 pub fn new_map() Map {
-	return Map(map{
+	return Map({
 		'23': 'str'
 	})
 }
 
 fn (a Map) + (b Map) Map {
 	str := b['23']
-	return Map(map{
+	return Map({
 		'34': str + '12'
 	})
 }
diff --git a/vlib/v/checker/tests/array_or_map_assign_err.out b/vlib/v/checker/tests/array_or_map_assign_err.out
index fca758ba42..7931d926a7 100644
--- a/vlib/v/checker/tests/array_or_map_assign_err.out
+++ b/vlib/v/checker/tests/array_or_map_assign_err.out
@@ -11,10 +11,10 @@ vlib/v/checker/tests/array_or_map_assign_err.vv:5:5: error: use `array2 = array1
     5 |     a3 = a1
       |        ^
     6 |
-    7 |     m1 := map{'one': 1}
+    7 |     m1 := {'one': 1}
 vlib/v/checker/tests/array_or_map_assign_err.vv:8:8: error: cannot copy map: call `move` or `clone` method (or use a reference)
     6 |
-    7 |     m1 := map{'one': 1}
+    7 |     m1 := {'one': 1}
     8 |     m2 := m1
       |           ~~
     9 |     mut m3 := map[string]int{}
diff --git a/vlib/v/checker/tests/array_or_map_assign_err.vv b/vlib/v/checker/tests/array_or_map_assign_err.vv
index 517a25d0b8..f2463c8001 100644
--- a/vlib/v/checker/tests/array_or_map_assign_err.vv
+++ b/vlib/v/checker/tests/array_or_map_assign_err.vv
@@ -4,7 +4,7 @@ fn main() {
 	mut a3 := []int{}
 	a3 = a1
 
-	m1 := map{'one': 1}
+	m1 := {'one': 1}
 	m2 := m1
 	mut m3 := map[string]int{}
 	m3 = m1
@@ -12,7 +12,7 @@ fn main() {
 	_ = a2
 	_ = m2
 
-	mut m := map{'foo':1}
+	mut m := {'foo':1}
 	foo(mut m)
 
 	_ = a3
diff --git a/vlib/v/checker/tests/assign_expr_undefined_err_k.out b/vlib/v/checker/tests/assign_expr_undefined_err_k.out
index 0dd8e1ca2c..1ddc41103a 100644
--- a/vlib/v/checker/tests/assign_expr_undefined_err_k.out
+++ b/vlib/v/checker/tests/assign_expr_undefined_err_k.out
@@ -1,6 +1,6 @@
-vlib/v/checker/tests/assign_expr_undefined_err_k.vv:2:22: error: undefined variable: `a`
+vlib/v/checker/tests/assign_expr_undefined_err_k.vv:2:19: error: undefined variable: `a`
     1 | fn main() {
-    2 |     mut a := map{'one': a}
-      |                         ^
+    2 |     mut a := {'one': a}
+      |                      ^
     3 |     println(a)
-    4 | }
+    4 | }
\ No newline at end of file
diff --git a/vlib/v/checker/tests/assign_expr_undefined_err_k.vv b/vlib/v/checker/tests/assign_expr_undefined_err_k.vv
index e4d1e89974..edca5cab84 100644
--- a/vlib/v/checker/tests/assign_expr_undefined_err_k.vv
+++ b/vlib/v/checker/tests/assign_expr_undefined_err_k.vv
@@ -1,4 +1,4 @@
 fn main() {
-	mut a := map{'one': a}
+	mut a := {'one': a}
 	println(a)
 }
diff --git a/vlib/v/checker/tests/for_in_map_one_variable_err.out b/vlib/v/checker/tests/for_in_map_one_variable_err.out
index d7c6579ec2..0eb7516436 100644
--- a/vlib/v/checker/tests/for_in_map_one_variable_err.out
+++ b/vlib/v/checker/tests/for_in_map_one_variable_err.out
@@ -1,8 +1,8 @@
 vlib/v/checker/tests/for_in_map_one_variable_err.vv:3:6: error: declare a key and a value variable when ranging a map: `for key, val in map {`
 use `_` if you do not need the variable
     1 | fn main() {
-    2 |     kvs := map{'foo':'bar'}
+    2 |     kvs := {'foo':'bar'}
     3 |     for k in kvs {
       |         ^
     4 |         println('$k')
-    5 |     }
+    5 |     }
\ No newline at end of file
diff --git a/vlib/v/checker/tests/for_in_map_one_variable_err.vv b/vlib/v/checker/tests/for_in_map_one_variable_err.vv
index 9297280ec7..601c613df9 100644
--- a/vlib/v/checker/tests/for_in_map_one_variable_err.vv
+++ b/vlib/v/checker/tests/for_in_map_one_variable_err.vv
@@ -1,5 +1,5 @@
 fn main() {
-	kvs := map{'foo':'bar'}
+	kvs := {'foo':'bar'}
 	for k in kvs {
 		println('$k')
 	}
diff --git a/vlib/v/checker/tests/for_in_mut_val_type.out b/vlib/v/checker/tests/for_in_mut_val_type.out
index d898cf75a4..3a47a75493 100644
--- a/vlib/v/checker/tests/for_in_mut_val_type.out
+++ b/vlib/v/checker/tests/for_in_mut_val_type.out
@@ -14,7 +14,7 @@ vlib/v/checker/tests/for_in_mut_val_type.vv:7:15: error: `a2` is immutable, it c
     9 |     }
 vlib/v/checker/tests/for_in_mut_val_type.vv:11:18: error: `m` is immutable, it cannot be changed
     9 |     }
-   10 |     m := map{'aa': 1, 'bb': 2}
+   10 |     m := {'aa': 1, 'bb': 2}
    11 |     for _, mut j in m {
       |                     ^
    12 |         j *= 2
@@ -33,10 +33,10 @@ vlib/v/checker/tests/for_in_mut_val_type.vv:17:15: error: array literal is immut
       |                  ~~~~~~~~~~
    18 |         j *= 2
    19 |     }
-vlib/v/checker/tests/for_in_mut_val_type.vv:20:21: error: map literal is immutable, it cannot be changed
+vlib/v/checker/tests/for_in_mut_val_type.vv:20:18: error: map literal is immutable, it cannot be changed
    18 |         j *= 2
    19 |     }
-   20 |     for _, mut j in map{'aa': 1, 'bb': 2} {
-      |                        ~~~~~~~~~~~~~~~~~~
+   20 |     for _, mut j in {'aa': 1, 'bb': 2} {
+      |                     ~~~~~~~~~~~~~~~~~~
    21 |         j *= 2
    22 |     }
\ No newline at end of file
diff --git a/vlib/v/checker/tests/for_in_mut_val_type.vv b/vlib/v/checker/tests/for_in_mut_val_type.vv
index 664fb66cf8..afd714bdf5 100644
--- a/vlib/v/checker/tests/for_in_mut_val_type.vv
+++ b/vlib/v/checker/tests/for_in_mut_val_type.vv
@@ -7,7 +7,7 @@ fn main() {
 	for mut j in a2 {
 		j *= 2
 	}
-	m := map{'aa': 1, 'bb': 2}
+	m := {'aa': 1, 'bb': 2}
 	for _, mut j in m {
 		j *= 2
 	}
@@ -17,7 +17,7 @@ fn main() {
 	for mut j in [1, 2, 3]! {
 		j *= 2
 	}
-	for _, mut j in map{'aa': 1, 'bb': 2} {
+	for _, mut j in {'aa': 1, 'bb': 2} {
 		j *= 2
 	}
 }
diff --git a/vlib/v/checker/tests/import_symbol_private_err.out b/vlib/v/checker/tests/import_symbol_private_err.out
index 2d3d1e2c98..578d96a3e2 100644
--- a/vlib/v/checker/tests/import_symbol_private_err.out
+++ b/vlib/v/checker/tests/import_symbol_private_err.out
@@ -10,10 +10,10 @@ vlib/v/checker/tests/import_symbol_private_err.vv:4:13: error: module `io` type
     3 | import time { now, since }
     4 | import io { ReaderWriterImpl }
       |             ~~~~~~~~~~~~~~~~
-    5 | 
+    5 |
     6 | fn main() {
 vlib/v/checker/tests/import_symbol_private_err.vv:7:18: error: constant `v.scanner.single_quote` is private
-    5 | 
+    5 |
     6 | fn main() {
     7 |     println(scanner.single_quote)
       |                     ~~~~~~~~~~~~
@@ -25,24 +25,24 @@ vlib/v/checker/tests/import_symbol_private_err.vv:8:17: error: enum `v.parser.St
     8 |     println(parser.State.html)
       |                    ~~~~~~~~~~
     9 |     since(now())
-   10 |     _ = map{'h': 2}.exists('h')
+   10 |     _ = {'h': 2}.exists('h')
 vlib/v/checker/tests/import_symbol_private_err.vv:9:2: error: function `time.since` is private
     7 |     println(scanner.single_quote)
     8 |     println(parser.State.html)
     9 |     since(now())
       |     ~~~~~~~~~~~~
-   10 |     _ = map{'h': 2}.exists('h')
+   10 |     _ = {'h': 2}.exists('h')
    11 |     _ = ReaderWriterImpl{}
-vlib/v/checker/tests/import_symbol_private_err.vv:10:18: error: method `map[string]int.exists` is private
+vlib/v/checker/tests/import_symbol_private_err.vv:10:15: error: method `map[string]int.exists` is private
     8 |     println(parser.State.html)
     9 |     since(now())
-   10 |     _ = map{'h': 2}.exists('h')
-      |                     ~~~~~~~~~~~
+   10 |     _ = {'h': 2}.exists('h')
+      |                  ~~~~~~~~~~~
    11 |     _ = ReaderWriterImpl{}
    12 | }
 vlib/v/checker/tests/import_symbol_private_err.vv:11:6: error: type `io.ReaderWriterImpl` is private
     9 |     since(now())
-   10 |     _ = map{'h': 2}.exists('h')
+   10 |     _ = {'h': 2}.exists('h')
    11 |     _ = ReaderWriterImpl{}
       |         ~~~~~~~~~~~~~~~~~~
-   12 | }
+   12 | }
\ No newline at end of file
diff --git a/vlib/v/checker/tests/import_symbol_private_err.vv b/vlib/v/checker/tests/import_symbol_private_err.vv
index 0957e86238..fd4411b0e7 100644
--- a/vlib/v/checker/tests/import_symbol_private_err.vv
+++ b/vlib/v/checker/tests/import_symbol_private_err.vv
@@ -7,6 +7,6 @@ fn main() {
 	println(scanner.single_quote)
 	println(parser.State.html)
 	since(now())
-	_ = map{'h': 2}.exists('h')
+	_ = {'h': 2}.exists('h')
 	_ = ReaderWriterImpl{}
 }
diff --git a/vlib/v/checker/tests/in_mismatch_type.out b/vlib/v/checker/tests/in_mismatch_type.out
index d6e9e12d86..1a3b16c491 100644
--- a/vlib/v/checker/tests/in_mismatch_type.out
+++ b/vlib/v/checker/tests/in_mismatch_type.out
@@ -12,18 +12,18 @@ vlib/v/checker/tests/in_mismatch_type.vv:13:5: error: left operand to `in` does
       |        ~~~~~~
    14 |         println('yeah')
    15 |     }
-vlib/v/checker/tests/in_mismatch_type.vv:16:5: error: use `str.contains(substr)` instead of `substr in str`
+vlib/v/checker/tests/in_mismatch_type.vv:16:7: error: `in` can only be used with an array/map/string
    14 |         println('yeah')
    15 |     }
    16 |     if 3 in s {
-      |        ~~~~~~
+      |          ~~
    17 |         println('dope')
    18 |     }
-vlib/v/checker/tests/in_mismatch_type.vv:19:5: error: use `str.contains(substr)` instead of `substr in str`
+vlib/v/checker/tests/in_mismatch_type.vv:19:9: error: `in` can only be used with an array/map/string
    17 |         println('dope')
    18 |     }
    19 |     if `a` in s {
-      |        ~~~~~~~~
+      |            ~~
    20 |         println("oh no :'(")
    21 |     }
 vlib/v/checker/tests/in_mismatch_type.vv:22:7: error: `in` can only be used with an array/map/string
@@ -74,4 +74,4 @@ vlib/v/checker/tests/in_mismatch_type.vv:41:5: error: left operand to `!in` does
    41 |     if 5 !in m {
       |        ~~~~~~~
    42 |         println('yay')
-   43 |     }
+   43 |     }
\ No newline at end of file
diff --git a/vlib/v/checker/tests/in_mismatch_type.vv b/vlib/v/checker/tests/in_mismatch_type.vv
index 4a5dc697c3..2fc2bde89e 100644
--- a/vlib/v/checker/tests/in_mismatch_type.vv
+++ b/vlib/v/checker/tests/in_mismatch_type.vv
@@ -3,7 +3,7 @@ type Int = int
 fn main() {
 	a_i := [1, 2, 3]
 	a_s := ['1', '2', '3']
-	m := map{
+	m := {
 		'test': 1
 	}
 	s := 'abcd'
diff --git a/vlib/v/checker/tests/map_delete.out b/vlib/v/checker/tests/map_delete.out
index c3a1822113..ecfbca0e21 100644
--- a/vlib/v/checker/tests/map_delete.out
+++ b/vlib/v/checker/tests/map_delete.out
@@ -4,13 +4,13 @@ vlib/v/checker/tests/map_delete.vv:5:11: error: cannot use `int literal` as `str
     5 |     m.delete(1)
       |              ^
     6 |     m.delete(1, 2)
-    7 |     m2 := map{
+    7 |     m2 := {
 vlib/v/checker/tests/map_delete.vv:6:4: error: expected 1 argument, but got 2
     4 |     }
     5 |     m.delete(1)
     6 |     m.delete(1, 2)
       |       ~~~~~~~~~~~~
-    7 |     m2 := map{
+    7 |     m2 := {
     8 |         '1': 1
 vlib/v/checker/tests/map_delete.vv:10:2: error: `m2` is immutable, declare it with `mut` to make it mutable
     8 |         '1': 1
diff --git a/vlib/v/checker/tests/map_delete.vv b/vlib/v/checker/tests/map_delete.vv
index 26b26067c4..c9cd093b90 100644
--- a/vlib/v/checker/tests/map_delete.vv
+++ b/vlib/v/checker/tests/map_delete.vv
@@ -1,10 +1,10 @@
 fn main() {
-	mut m := map{
+	mut m := {
 		'1': 1
 	}
 	m.delete(1)
 	m.delete(1, 2)
-	m2 := map{
+	m2 := {
 		'1': 1
 	}
 	m2.delete('1')
diff --git a/vlib/v/checker/tests/map_init_invalid_syntax.out b/vlib/v/checker/tests/map_init_invalid_syntax.out
index e18f40dc95..c7fec6d947 100644
--- a/vlib/v/checker/tests/map_init_invalid_syntax.out
+++ b/vlib/v/checker/tests/map_init_invalid_syntax.out
@@ -1,6 +1,6 @@
-vlib/v/checker/tests/map_init_invalid_syntax.vv:2:10: error: invalid empty map initilization syntax, use e.g. map[string]int{} instead
+vlib/v/checker/tests/map_init_invalid_syntax.vv:2:7: error: invalid empty map initilization syntax, use e.g. map[string]int{} instead
     1 | fn main() {
-    2 |     a := map{}
-      |             ~~
+    2 |     a := {}
+      |          ~~
     3 |     println(a)
-    4 | }
+    4 | }
\ No newline at end of file
diff --git a/vlib/v/checker/tests/map_init_invalid_syntax.vv b/vlib/v/checker/tests/map_init_invalid_syntax.vv
index a976d70a52..cf83b10840 100644
--- a/vlib/v/checker/tests/map_init_invalid_syntax.vv
+++ b/vlib/v/checker/tests/map_init_invalid_syntax.vv
@@ -1,4 +1,4 @@
 fn main() {
-	a := map{}
+	a := {}
 	println(a)
 }
diff --git a/vlib/v/checker/tests/map_init_key_duplicate_err.out b/vlib/v/checker/tests/map_init_key_duplicate_err.out
index d560b64116..61c061ee89 100644
--- a/vlib/v/checker/tests/map_init_key_duplicate_err.out
+++ b/vlib/v/checker/tests/map_init_key_duplicate_err.out
@@ -5,9 +5,9 @@ vlib/v/checker/tests/map_init_key_duplicate_err.vv:5:3: error: duplicate key "fo
       |         ~~~~~
     6 |     }
     7 |     println(a)
-vlib/v/checker/tests/map_init_key_duplicate_err.vv:9:18: error: duplicate key "2" in map literal
+vlib/v/checker/tests/map_init_key_duplicate_err.vv:9:15: error: duplicate key "2" in map literal
     7 |     println(a)
     8 |
-    9 |     _ = map{2:0 3:0 2:0}
-      |                     ^
+    9 |     _ = {2:0 3:0 2:0}
+      |                  ^
    10 | }
\ No newline at end of file
diff --git a/vlib/v/checker/tests/map_init_key_duplicate_err.vv b/vlib/v/checker/tests/map_init_key_duplicate_err.vv
index cd6efe6663..2309e1f0fc 100644
--- a/vlib/v/checker/tests/map_init_key_duplicate_err.vv
+++ b/vlib/v/checker/tests/map_init_key_duplicate_err.vv
@@ -1,10 +1,10 @@
 fn main() {
-	a := map{
+	a := {
 		'foo': 'bar'
 		'abc': 'abc'
 		'foo': 'bar'
 	}
 	println(a)
 
-	_ = map{2:0 3:0 2:0}
+	_ = {2:0 3:0 2:0}
 }
diff --git a/vlib/v/checker/tests/map_init_wrong_type.out b/vlib/v/checker/tests/map_init_wrong_type.out
index 117e787c9c..d58d7f88dc 100644
--- a/vlib/v/checker/tests/map_init_wrong_type.out
+++ b/vlib/v/checker/tests/map_init_wrong_type.out
@@ -1,21 +1,21 @@
-vlib/v/checker/tests/map_init_wrong_type.vv:3:18: error: invalid map value: expected `f32`, not `float literal`
+vlib/v/checker/tests/map_init_wrong_type.vv:3:15: error: invalid map value: expected `f32`, not `float literal`
     1 | fn main() {
     2 |    mut a := map[string]f32{}
-    3 |    a = map{ 'x': 12.3 }
-      |                  ~~~~
-    4 |    _ = map{2:0 3:0 "hi":0}
-    5 |    _ = map{2:0 3:`@` 4:0}
-vlib/v/checker/tests/map_init_wrong_type.vv:4:20: error: invalid map key: expected `int`, not `string`
+    3 |    a = { 'x': 12.3 }
+      |               ~~~~
+    4 |    _ = {2:0 3:0 "hi":0}
+    5 |    _ = {2:0 3:`@` 4:0}
+vlib/v/checker/tests/map_init_wrong_type.vv:4:17: error: invalid map key: expected `int`, not `string`
     2 |    mut a := map[string]f32{}
-    3 |    a = map{ 'x': 12.3 }
-    4 |    _ = map{2:0 3:0 "hi":0}
-      |                    ~~~~
-    5 |    _ = map{2:0 3:`@` 4:0}
+    3 |    a = { 'x': 12.3 }
+    4 |    _ = {2:0 3:0 "hi":0}
+      |                 ~~~~
+    5 |    _ = {2:0 3:`@` 4:0}
     6 |   _ = a
-vlib/v/checker/tests/map_init_wrong_type.vv:5:18: error: invalid map value: expected `int`, not `rune`
-    3 |    a = map{ 'x': 12.3 }
-    4 |    _ = map{2:0 3:0 "hi":0}
-    5 |    _ = map{2:0 3:`@` 4:0}
-      |                  ~~~
+vlib/v/checker/tests/map_init_wrong_type.vv:5:15: error: invalid map value: expected `int`, not `rune`
+    3 |    a = { 'x': 12.3 }
+    4 |    _ = {2:0 3:0 "hi":0}
+    5 |    _ = {2:0 3:`@` 4:0}
+      |               ~~~
     6 |   _ = a
     7 | }
\ No newline at end of file
diff --git a/vlib/v/checker/tests/map_init_wrong_type.vv b/vlib/v/checker/tests/map_init_wrong_type.vv
index dc41230625..56b7b960f3 100644
--- a/vlib/v/checker/tests/map_init_wrong_type.vv
+++ b/vlib/v/checker/tests/map_init_wrong_type.vv
@@ -1,7 +1,7 @@
 fn main() {
    mut a := map[string]f32{}
-   a = map{ 'x': 12.3 }
-   _ = map{2:0 3:0 "hi":0}
-   _ = map{2:0 3:`@` 4:0}
+   a = { 'x': 12.3 }
+   _ = {2:0 3:0 "hi":0}
+   _ = {2:0 3:`@` 4:0}
   _ = a
 }
diff --git a/vlib/v/checker/tests/mut_map_get_value_address_err.out b/vlib/v/checker/tests/mut_map_get_value_address_err.out
index 297c22825c..1e58a504bf 100644
--- a/vlib/v/checker/tests/mut_map_get_value_address_err.out
+++ b/vlib/v/checker/tests/mut_map_get_value_address_err.out
@@ -1,7 +1,7 @@
 vlib/v/checker/tests/mut_map_get_value_address_err.vv:3:12: error: cannot take the address of map values
     1 | fn main() {
-    2 |     mut m := map{'key' : 3}
+    2 |     mut m := {'key' : 3}
     3 |     a := &m['key']
       |            ~~~~~~~
     4 |     println(a)
-    5 | }
+    5 | }
\ No newline at end of file
diff --git a/vlib/v/checker/tests/mut_map_get_value_address_err.vv b/vlib/v/checker/tests/mut_map_get_value_address_err.vv
index 46e5b771af..1f3cc58a9d 100644
--- a/vlib/v/checker/tests/mut_map_get_value_address_err.vv
+++ b/vlib/v/checker/tests/mut_map_get_value_address_err.vv
@@ -1,5 +1,5 @@
 fn main() {
-    mut m := map{'key' : 3}
+    mut m := {'key' : 3}
     a := &m['key']
     println(a)
 }
diff --git a/vlib/v/checker/tests/or_expr_types_mismatch.out b/vlib/v/checker/tests/or_expr_types_mismatch.out
index c84faa59bd..352b56b85d 100644
--- a/vlib/v/checker/tests/or_expr_types_mismatch.out
+++ b/vlib/v/checker/tests/or_expr_types_mismatch.out
@@ -1,6 +1,6 @@
 vlib/v/checker/tests/or_expr_types_mismatch.vv:3:19: error: wrong return type `none` in the `or {}` block, expected `string`
     1 | fn get_map() ?string {
-    2 |     m := map{1: 'a', 2: 'b'}
+    2 |     m := {1: 'a', 2: 'b'}
     3 |     return m[1] or { none }
       |                      ~~~~
     4 | }
diff --git a/vlib/v/checker/tests/or_expr_types_mismatch.vv b/vlib/v/checker/tests/or_expr_types_mismatch.vv
index 1b557c3695..ab5f1c8b1f 100644
--- a/vlib/v/checker/tests/or_expr_types_mismatch.vv
+++ b/vlib/v/checker/tests/or_expr_types_mismatch.vv
@@ -1,5 +1,5 @@
 fn get_map() ?string {
-	m := map{1: 'a', 2: 'b'}
+	m := {1: 'a', 2: 'b'}
 	return m[1] or { none }
 }
 
diff --git a/vlib/v/checker/tests/shared_bad_args.vv b/vlib/v/checker/tests/shared_bad_args.vv
index f0d4913491..08e5d8a69b 100644
--- a/vlib/v/checker/tests/shared_bad_args.vv
+++ b/vlib/v/checker/tests/shared_bad_args.vv
@@ -37,7 +37,7 @@ fn a_val(a []int) int {
 fn test_shared_as_value() {
 	shared s := St{ a: 5 }
 	shared a := [3, 4, 6, 13, -23]
-	shared m := map{'qw': 12.75, 'yxcv': -3.125, 'poiu': 88.0625}
+	shared m := {'qw': 12.75, 'yxcv': -3.125, 'poiu': 88.0625}
 	shared r := Qr{ a: 7 }
 	lock s {
 		u := r.s_val(s)
@@ -55,7 +55,7 @@ fn test_shared_as_value() {
 fn test_shared_as_mut() {
 	shared s := St{ a: 5 }
 	shared a := [3, 4, 6, 13, -23]
-	shared m := map{'qw': 12.75, 'yxcv': -3.125, 'poiu': 88.0625}
+	shared m := {'qw': 12.75, 'yxcv': -3.125, 'poiu': 88.0625}
 	shared r := Qr{ a: 7 }
 	lock s {
 		r.s_mut(mut s)
diff --git a/vlib/v/checker/tests/struct_short_init_warning.out b/vlib/v/checker/tests/struct_short_init_warning.out
deleted file mode 100644
index 41daa52c03..0000000000
--- a/vlib/v/checker/tests/struct_short_init_warning.out
+++ /dev/null
@@ -1,13 +0,0 @@
-vlib/v/checker/tests/struct_short_init_warning.vv:6:9: warning: short struct initalization is deprecated, use explicit struct name
-    4 |
-    5 | fn f(foo Foo) Foo {
-    6 |     return {v: foo.v}
-      |            ~~~~~~~~~~
-    7 | }
-    8 |
-vlib/v/checker/tests/struct_short_init_warning.vv:10:4: warning: short struct initalization is deprecated, use explicit struct name
-    8 |
-    9 | fn main() {
-   10 |     f({v: 10})
-      |       ~~~~~~~
-   11 | }
diff --git a/vlib/v/checker/tests/struct_short_init_warning.vv b/vlib/v/checker/tests/struct_short_init_warning.vv
deleted file mode 100644
index 74bd02ff10..0000000000
--- a/vlib/v/checker/tests/struct_short_init_warning.vv
+++ /dev/null
@@ -1,11 +0,0 @@
-struct Foo {
-	v int
-}
-
-fn f(foo Foo) Foo {
-	return {v: foo.v}
-}
-
-fn main() {
-	f({v: 10})
-}
diff --git a/vlib/v/doc/doc.v b/vlib/v/doc/doc.v
index 316cd333da..3149439804 100644
--- a/vlib/v/doc/doc.v
+++ b/vlib/v/doc/doc.v
@@ -279,7 +279,7 @@ pub fn (mut d Doc) stmt(stmt ast.Stmt, filename string) ?DocNode {
 						kind: .variable
 						parent_name: node.name
 						pos: param.pos
-						attrs: map{
+						attrs: {
 							'mut': param.is_mut.str()
 						}
 						return_type: d.type_to_str(param.typ)
diff --git a/vlib/v/fmt/fmt.v b/vlib/v/fmt/fmt.v
index 6de223af56..830d878226 100644
--- a/vlib/v/fmt/fmt.v
+++ b/vlib/v/fmt/fmt.v
@@ -1970,14 +1970,11 @@ pub fn (mut f Fmt) map_init(node ast.MapInit) {
 			info := sym.info as ast.Map
 			f.mark_types_import_as_used(info.key_type)
 			f.write(f.table.type_to_str_using_aliases(node.typ, f.mod2alias))
-		} else {
-			// m = map{}
-			f.write('map')
 		}
 		f.write('{}')
 		return
 	}
-	f.writeln('map{')
+	f.writeln('{')
 	f.indent++
 	f.comments(node.pre_cmnts)
 	mut max_field_len := 0
diff --git a/vlib/v/fmt/tests/array_init_comment_ending_keep.vv b/vlib/v/fmt/tests/array_init_comment_ending_keep.vv
index 9fe7624f4e..fdbf675e85 100644
--- a/vlib/v/fmt/tests/array_init_comment_ending_keep.vv
+++ b/vlib/v/fmt/tests/array_init_comment_ending_keep.vv
@@ -3,7 +3,7 @@ import net.http
 const (
 	write_set_cookie_tests = [
 		ReadSetCookiesTestCase{
-			header: map{
+			header: {
 				'Set-Cookie': ['special-7=","']
 			}
 			cookies: [
diff --git a/vlib/v/fmt/tests/array_init_keep.vv b/vlib/v/fmt/tests/array_init_keep.vv
index 3888cc4ea0..8321e2e074 100644
--- a/vlib/v/fmt/tests/array_init_keep.vv
+++ b/vlib/v/fmt/tests/array_init_keep.vv
@@ -1,9 +1,9 @@
 fn main() {
 	_ := []int{len: 10, cap: 10, init: 7}
-	_ := []map[string]string{len: 5, cap: 50, init: map{
+	_ := []map[string]string{len: 5, cap: 50, init: {
 		'a': 'a'
 	}}
-	_ := []map[string][]int{len: 7, cap: 100, init: map{
+	_ := []map[string][]int{len: 7, cap: 100, init: {
 		'a': [1, 2]
 	}}
 }
diff --git a/vlib/v/fmt/tests/comments_keep.vv b/vlib/v/fmt/tests/comments_keep.vv
index a581eb2c35..5af72801aa 100644
--- a/vlib/v/fmt/tests/comments_keep.vv
+++ b/vlib/v/fmt/tests/comments_keep.vv
@@ -70,7 +70,7 @@ fn linebreaks_in_ascii_art_block_comments() {
 }
 
 fn map_comments() {
-	mymap := map{
+	mymap := {
 		// pre
 		`:`: 1
 		`!`: 2 // after
diff --git a/vlib/v/fmt/tests/empty_lines_keep.vv b/vlib/v/fmt/tests/empty_lines_keep.vv
index afcd1e55df..7e22486423 100644
--- a/vlib/v/fmt/tests/empty_lines_keep.vv
+++ b/vlib/v/fmt/tests/empty_lines_keep.vv
@@ -80,7 +80,7 @@ fn no_empty_lines() {
 	mut files := map[string][]FileData{}
 	code := 'foo
 bar'
-	params[0] = {
+	params[0] = IfExpr{
 		...params[0]
 		typ: params[0].typ.set_nr_muls(1)
 	}
diff --git a/vlib/v/fmt/tests/fn_return_generic_struct_keep.vv b/vlib/v/fmt/tests/fn_return_generic_struct_keep.vv
index b85781e118..abbc861ee4 100644
--- a/vlib/v/fmt/tests/fn_return_generic_struct_keep.vv
+++ b/vlib/v/fmt/tests/fn_return_generic_struct_keep.vv
@@ -9,7 +9,7 @@ pub struct Foo {
 }
 
 pub fn (f Foo) new_some<T>(value T) Optional<T> {
-	return {
+	return Optional{
 		value: value
 		some: true
 	}
diff --git a/vlib/v/fmt/tests/fn_trailing_arg_syntax_expected.vv b/vlib/v/fmt/tests/fn_trailing_arg_syntax_expected.vv
index 255d5ca579..f082c1356e 100644
--- a/vlib/v/fmt/tests/fn_trailing_arg_syntax_expected.vv
+++ b/vlib/v/fmt/tests/fn_trailing_arg_syntax_expected.vv
@@ -22,8 +22,8 @@ fn main() {
 			y: 0
 		}
 	)
-	bar2_func({})
-	bar2_func({ x: 's' },
+	bar2_func()
+	bar2_func(Bar{ x: 's' },
 		x: 's'
 	)
 	baz_func('foo', 'bar',
@@ -32,7 +32,7 @@ fn main() {
 	)
 	ui.row(
 		// stretch: true
-		margin: {
+		margin: Margin{
 			top: 10
 			left: 10
 			right: 10
diff --git a/vlib/v/fmt/tests/fn_trailing_arg_syntax_input.vv b/vlib/v/fmt/tests/fn_trailing_arg_syntax_input.vv
index 110161985a..a42259fb3f 100644
--- a/vlib/v/fmt/tests/fn_trailing_arg_syntax_input.vv
+++ b/vlib/v/fmt/tests/fn_trailing_arg_syntax_input.vv
@@ -16,15 +16,15 @@ fn main() {
 		x: 0
 		y: 0
 	})
-	bar2_func({})
-	bar2_func({x: 's'}, {x: 's'})
+	bar2_func()
+	bar2_func(Bar{x: 's'}, x: 's')
 	baz_func('foo', 'bar', x: 0
 		y: 0
 	)
-	ui.row({
+	ui.row(
 		//stretch: true
-		margin: {top:10,left:10,right:10,bottom:10}
-	})
+		margin: Margin{top:10,left:10,right:10,bottom:10}
+	)
 }
 
 fn bar_func(bar Bar) {
diff --git a/vlib/v/fmt/tests/fn_trailing_arg_syntax_keep.vv b/vlib/v/fmt/tests/fn_trailing_arg_syntax_keep.vv
index 9a9d98c2c6..dc76db48ce 100644
--- a/vlib/v/fmt/tests/fn_trailing_arg_syntax_keep.vv
+++ b/vlib/v/fmt/tests/fn_trailing_arg_syntax_keep.vv
@@ -52,6 +52,5 @@ fn main() {
 }
 
 fn trailing_struct_with_update_expr() {
-	c.error('duplicate const `$field.name`', { ...field.pos, len: name_len })
 	c.error('duplicate const `$field.name`', Position{ ...field.pos, len: name_len })
 }
diff --git a/vlib/v/fmt/tests/import_selective_expected.vv b/vlib/v/fmt/tests/import_selective_expected.vv
index 8cdb26a964..fa72af77f1 100644
--- a/vlib/v/fmt/tests/import_selective_expected.vv
+++ b/vlib/v/fmt/tests/import_selective_expected.vv
@@ -28,7 +28,7 @@ struct Struct {
 }
 
 fn (s Struct) method(v StructMethodArg) StructMethodRet {
-	return {}
+	return StructMethodRet{}
 }
 
 interface Interface {
@@ -43,7 +43,7 @@ fn f(v FnArg) FnRet {
 
 	println(Enum.val)
 
-	return {}
+	return FnRet{}
 }
 
 struct App {
diff --git a/vlib/v/fmt/tests/import_selective_input.vv b/vlib/v/fmt/tests/import_selective_input.vv
index 12a08125ea..534b72e593 100644
--- a/vlib/v/fmt/tests/import_selective_input.vv
+++ b/vlib/v/fmt/tests/import_selective_input.vv
@@ -33,7 +33,7 @@ struct Struct {
 }
 
 fn (s Struct) method(v StructMethodArg) StructMethodRet {
-	return {}
+	return StructMethodRet{}
 }
 
 interface Interface {
@@ -47,7 +47,7 @@ fn f(v FnArg) FnRet {
 
 	println(Enum.val)
 
-	return {}
+	return FnRet{}
 }
 
 struct App {
diff --git a/vlib/v/fmt/tests/maps_expected.vv b/vlib/v/fmt/tests/maps_expected.vv
index ade554fc22..122114a299 100644
--- a/vlib/v/fmt/tests/maps_expected.vv
+++ b/vlib/v/fmt/tests/maps_expected.vv
@@ -1,5 +1,5 @@
 const (
-	reserved_types = map{
+	reserved_types = {
 		'i8':   true
 		'i16':  true
 		'int':  true
@@ -8,7 +8,7 @@ const (
 	}
 )
 
-numbers := map{
+numbers := {
 	'one':                                 1
 	'two':                                 2
 	'sevenhundredseventyseven':            777
diff --git a/vlib/v/fmt/tests/maps_keep.vv b/vlib/v/fmt/tests/maps_keep.vv
index e2cbf1efc8..b5737f7077 100644
--- a/vlib/v/fmt/tests/maps_keep.vv
+++ b/vlib/v/fmt/tests/maps_keep.vv
@@ -5,11 +5,11 @@ fn workaround() {
 
 fn main() {
 	mut ams := []map[string]string{}
-	ams << map{
+	ams << {
 		'a': 'b'
 		'c': 'd'
 	}
-	ams << map{
+	ams << {
 		'e': 'f'
 		'g': 'h'
 	}
diff --git a/vlib/v/fmt/tests/maps_of_fns_with_string_keys_keep.vv b/vlib/v/fmt/tests/maps_of_fns_with_string_keys_keep.vv
index bcb6affb0d..30829ded38 100644
--- a/vlib/v/fmt/tests/maps_of_fns_with_string_keys_keep.vv
+++ b/vlib/v/fmt/tests/maps_of_fns_with_string_keys_keep.vv
@@ -5,7 +5,7 @@ fn sqr(n int) int {
 fn main() {
 	fns := [sqr]
 	println(fns[0](10))
-	fns_map := map{
+	fns_map := {
 		'sqr': sqr
 	}
 	println(fns_map['sqr'])
diff --git a/vlib/v/gen/js/tests/array.v b/vlib/v/gen/js/tests/array.v
index f07e1b65a2..b8f1f2da50 100644
--- a/vlib/v/gen/js/tests/array.v
+++ b/vlib/v/gen/js/tests/array.v
@@ -73,8 +73,6 @@ fn main() {
 	println('key' in m)
 	print('true\t=> ')
 	println('badkey' !in m)
-	print('true\t=> ')
-	println('o' in 'hello')
 
 	// for in
 	for _ in arr1 {}
diff --git a/vlib/v/gen/js/tests/js.v b/vlib/v/gen/js/tests/js.v
index ee7ba084ec..90bcb189ab 100644
--- a/vlib/v/gen/js/tests/js.v
+++ b/vlib/v/gen/js/tests/js.v
@@ -71,7 +71,7 @@ fn main() {
 	arr := [1, 2, 3, 4, 5]
 	for i in arr {
 	}
-	ma := map{
+	ma := {
 		'str': 'done'
 		'ddo': 'baba'
 	}
diff --git a/vlib/v/parser/expr.v b/vlib/v/parser/expr.v
index 746e928764..3317b4760c 100644
--- a/vlib/v/parser/expr.v
+++ b/vlib/v/parser/expr.v
@@ -50,6 +50,8 @@ pub fn (mut p Parser) check_expr(precedence int) ?ast.Expr {
 				p.inside_match = false
 			} else if p.tok.lit == 'map' && p.peek_tok.kind == .lcbr && !(p.builtin_mod
 				&& p.file_base in ['map.v', 'map_d_gcboehm_opt.v']) {
+				p.warn_with_pos("deprecated map syntax, use syntax like `{'age': 20}`",
+					p.tok.position())
 				p.next() // `map`
 				p.next() // `{`
 				node = p.map_init()
@@ -297,33 +299,9 @@ pub fn (mut p Parser) check_expr(precedence int) ?ast.Expr {
 			}
 		}
 		.lcbr {
-			// TODO: remove this when deprecation will be removed, vfmt should handle it for a while
-			// Map `{"age": 20}` or `{ x | foo:bar, a:10 }`
+			// Map `{"age": 20}`
 			p.next()
-			if p.tok.kind in [.chartoken, .number, .string] {
-				p.warn_with_pos("deprecated map syntax, use syntax like `map{'age': 20}`",
-					p.prev_tok.position())
-				node = p.map_init()
-			} else {
-				// it should be a struct
-				if p.tok.kind == .name && p.peek_tok.kind == .pipe {
-					// TODO: remove deprecated
-					p.warn_with_pos('use e.g. `...struct_var` instead', p.peek_tok.position())
-					node = p.assoc()
-				} else if (p.tok.kind == .name && p.peek_tok.kind == .colon)
-					|| p.tok.kind in [.rcbr, .comment, .ellipsis] {
-					node = p.struct_init(true) // short_syntax: true
-					p.warn_with_pos('short struct initalization is deprecated, use explicit struct name',
-						node.position())
-				} else if p.tok.kind == .name {
-					p.next()
-					return p.error_with_pos('unexpected $p.tok, expecting `:` after struct field name',
-						p.tok.position())
-				} else {
-					return p.error_with_pos('unexpected $p.tok, expecting struct field name',
-						p.tok.position())
-				}
-			}
+			node = p.map_init()
 			p.check(.rcbr)
 		}
 		.key_fn {
diff --git a/vlib/v/parser/tests/for_in_mut_key_of_map.out b/vlib/v/parser/tests/for_in_mut_key_of_map.out
index 6737a534da..7c159a0338 100644
--- a/vlib/v/parser/tests/for_in_mut_key_of_map.out
+++ b/vlib/v/parser/tests/for_in_mut_key_of_map.out
@@ -1,6 +1,6 @@
 vlib/v/parser/tests/for_in_mut_key_of_map.vv:3:6: error: index of array or key of map cannot be mutated
     1 | fn main() {
-    2 |     mut m := map{'foo': 1, 'bar': 2}
+    2 |     mut m := {'foo': 1, 'bar': 2}
     3 |     for mut k, _ in m {
       |         ~~~
     4 |         println(k)
diff --git a/vlib/v/parser/tests/for_in_mut_key_of_map.vv b/vlib/v/parser/tests/for_in_mut_key_of_map.vv
index c8a2296983..22a5acade0 100644
--- a/vlib/v/parser/tests/for_in_mut_key_of_map.vv
+++ b/vlib/v/parser/tests/for_in_mut_key_of_map.vv
@@ -1,5 +1,5 @@
 fn main() {
-	mut m := map{'foo': 1, 'bar': 2}
+	mut m := {'foo': 1, 'bar': 2}
 	for mut k, _ in m {
 		println(k)
 	}
diff --git a/vlib/v/parser/tests/or_default_missing.vv b/vlib/v/parser/tests/or_default_missing.vv
index ad9fa62988..d89db0d72e 100644
--- a/vlib/v/parser/tests/or_default_missing.vv
+++ b/vlib/v/parser/tests/or_default_missing.vv
@@ -7,7 +7,7 @@ fn test_array_or() {
 }
 
 fn test_map_or() {
-	m := map{
+	m := {
 		'as': 3
 		'qw': 4
 		'kl': 5
diff --git a/vlib/v/parser/tests/struct_field_expected.out b/vlib/v/parser/tests/struct_field_expected.out
index 9fa06a2d95..0aabfbeb0f 100644
--- a/vlib/v/parser/tests/struct_field_expected.out
+++ b/vlib/v/parser/tests/struct_field_expected.out
@@ -1,7 +1,7 @@
-vlib/v/parser/tests/struct_field_expected.vv:6:2: error: unexpected token `.`, expecting struct field name
-    4 | 
-    5 | x = {
-    6 |     .a : 'Alpha'
-      |     ^
-    7 |     .b : 'Beta'
-    8 | }
+vlib/v/parser/tests/struct_field_expected.vv:6:4: error: invalid expression: unexpected token `:`
+    4 |
+    5 | x = Bar{
+    6 |     .a: 'Alpha'
+      |       ^
+    7 |     .b: 'Beta'
+    8 | }
\ No newline at end of file
diff --git a/vlib/v/parser/tests/struct_field_expected.vv b/vlib/v/parser/tests/struct_field_expected.vv
index bf4929cded..c17731123f 100644
--- a/vlib/v/parser/tests/struct_field_expected.vv
+++ b/vlib/v/parser/tests/struct_field_expected.vv
@@ -2,8 +2,8 @@ enum TestEnum {
 	a b
 }
 
-x = {
-	.a : 'Alpha'
-	.b : 'Beta'
+x = Bar{
+	.a: 'Alpha'
+	.b: 'Beta'
 }
 
diff --git a/vlib/v/pkgconfig/pkgconfig_test.v b/vlib/v/pkgconfig/pkgconfig_test.v
index 4bc0db6191..0d7204ee17 100644
--- a/vlib/v/pkgconfig/pkgconfig_test.v
+++ b/vlib/v/pkgconfig/pkgconfig_test.v
@@ -55,7 +55,7 @@ fn test_samples() {
 			assert x.cflags == ['-I/usr/include', '-pthread', '-I/usr/include/glib-2.0',
 				'-I/usr/lib/x86_64-linux-gnu/glib-2.0/include',
 			]
-			assert x.vars == map{
+			assert x.vars == {
 				'prefix':            '/usr'
 				'libdir':            '/usr/lib/x86_64-linux-gnu'
 				'includedir':        '/usr/include'
@@ -74,7 +74,7 @@ fn test_samples() {
 			assert x.libs_private == ['-pthread']
 			assert x.cflags == ['-I/usr/include/glib-2.0',
 				'-I/usr/lib/x86_64-linux-gnu/glib-2.0/include', '-I/usr/include']
-			assert x.vars == map{
+			assert x.vars == {
 				'prefix':          '/usr'
 				'libdir':          '/usr/lib/x86_64-linux-gnu'
 				'includedir':      '/usr/include'
diff --git a/vlib/v/tests/alias_custom_type_map_test.v b/vlib/v/tests/alias_custom_type_map_test.v
index dd2bcd7492..492e1810cb 100644
--- a/vlib/v/tests/alias_custom_type_map_test.v
+++ b/vlib/v/tests/alias_custom_type_map_test.v
@@ -1,7 +1,7 @@
 import geometry
 
 fn test_aliases_map_init() {
-	a := geometry.ShapeMap(map{
+	a := geometry.ShapeMap({
 		geometry.Shape.circle: 'Shape is a circle.'
 	})
 	assert a[geometry.Shape.circle] == 'Shape is a circle.'
diff --git a/vlib/v/tests/alias_map_operator_overloading_test.v b/vlib/v/tests/alias_map_operator_overloading_test.v
index 14ad50ffff..4dcf61e747 100644
--- a/vlib/v/tests/alias_map_operator_overloading_test.v
+++ b/vlib/v/tests/alias_map_operator_overloading_test.v
@@ -1,14 +1,14 @@
 type Map = map[string]string
 
 pub fn new_map() Map {
-	return Map(map{
+	return Map({
 		'23': 'str'
 	})
 }
 
 fn (a Map) + (b Map) Map {
 	str := b['23']
-	return Map(map{
+	return Map({
 		'34': str + '12'
 	})
 }
@@ -16,7 +16,7 @@ fn (a Map) + (b Map) Map {
 fn test_map_alias_op_overloading() {
 	a := new_map()
 	b := new_map()
-	assert a + b == Map(map{
+	assert a + b == Map({
 		'34': 'str12'
 	})
 	assert '${a + b}' == "Map({'34': 'str12'})"
diff --git a/vlib/v/tests/anon_fn_in_containers_test.v b/vlib/v/tests/anon_fn_in_containers_test.v
index 808838afab..7c7720b0dd 100644
--- a/vlib/v/tests/anon_fn_in_containers_test.v
+++ b/vlib/v/tests/anon_fn_in_containers_test.v
@@ -1,5 +1,5 @@
 fn test_anon_fn_in_map() {
-	mut woop := map{
+	mut woop := {
 		'what': fn () string {
 			return 'whoopity whoop'
 		}
diff --git a/vlib/v/tests/array_append_short_struct_test.v b/vlib/v/tests/array_append_short_struct_test.v
index 293e9d5683..99a6fb1388 100644
--- a/vlib/v/tests/array_append_short_struct_test.v
+++ b/vlib/v/tests/array_append_short_struct_test.v
@@ -4,7 +4,7 @@ struct Page {
 
 fn test_array_append_short_struct() {
 	mut pages := []Page{}
-	pages << {
+	pages << Page{
 		contents: 3
 	}
 	println(pages)
diff --git a/vlib/v/tests/array_map_or_test.v b/vlib/v/tests/array_map_or_test.v
index 6c46382edc..1e62c74509 100644
--- a/vlib/v/tests/array_map_or_test.v
+++ b/vlib/v/tests/array_map_or_test.v
@@ -32,7 +32,7 @@ fn test_array_or_direct() {
 }
 
 fn test_map_or() {
-	m := map{
+	m := {
 		'as': 3
 		'qw': 4
 		'kl': 5
@@ -52,7 +52,7 @@ fn test_map_or() {
 }
 
 fn get_map_el(key string) ?int {
-	m := map{
+	m := {
 		'as': 3
 		'qw': 4
 		'kl': 5
diff --git a/vlib/v/tests/array_sort_lt_overload_test.v b/vlib/v/tests/array_sort_lt_overload_test.v
index b37f022bfb..517c27cf16 100644
--- a/vlib/v/tests/array_sort_lt_overload_test.v
+++ b/vlib/v/tests/array_sort_lt_overload_test.v
@@ -8,13 +8,13 @@ fn (a Num) < (b Num) bool {
 
 fn test_sort_lt_overloaded_struct_array() {
 	mut arr := []Num{}
-	arr << {
+	arr << Num{
 		value: 10
 	}
-	arr << {
+	arr << Num{
 		value: 5
 	}
-	arr << {
+	arr << Num{
 		value: 7
 	}
 	arr.sort()
diff --git a/vlib/v/tests/array_to_string_test.v b/vlib/v/tests/array_to_string_test.v
index d647cb4435..92f68be124 100644
--- a/vlib/v/tests/array_to_string_test.v
+++ b/vlib/v/tests/array_to_string_test.v
@@ -45,11 +45,11 @@ fn test_interpolation_array_to_string() {
 
 fn test_interpolation_array_of_map_to_string() {
 	mut ams := []map[string]string{}
-	ams << map{
+	ams << {
 		'a': 'b'
 		'c': 'd'
 	}
-	ams << map{
+	ams << {
 		'e': 'f'
 		'g': 'h'
 	}
diff --git a/vlib/v/tests/blank_ident_test.v b/vlib/v/tests/blank_ident_test.v
index 610799c196..73acaa7df9 100644
--- a/vlib/v/tests/blank_ident_test.v
+++ b/vlib/v/tests/blank_ident_test.v
@@ -115,7 +115,7 @@ fn test_nested_for_in_array_both() {
 }
 
 const (
-	m = map{
+	m = {
 		'key': 'value'
 	}
 )
diff --git a/vlib/v/tests/calling_module_functions_with_maps_of_arrays_test.v b/vlib/v/tests/calling_module_functions_with_maps_of_arrays_test.v
index e515d22092..32f401f066 100644
--- a/vlib/v/tests/calling_module_functions_with_maps_of_arrays_test.v
+++ b/vlib/v/tests/calling_module_functions_with_maps_of_arrays_test.v
@@ -1,7 +1,7 @@
 import json
 
 fn test_calling_functions_with_map_initializations_containing_arrays() {
-	result := json.encode(map{
+	result := json.encode({
 		// NB: []string{} should NOT be treated as []json.string{}
 		'users':  []string{}
 		'groups': []string{}
diff --git a/vlib/v/tests/cross_assign_test.v b/vlib/v/tests/cross_assign_test.v
index 43014a14c7..61d4d59986 100644
--- a/vlib/v/tests/cross_assign_test.v
+++ b/vlib/v/tests/cross_assign_test.v
@@ -26,7 +26,7 @@ fn test_cross_assign_of_array_in_fn() {
 
 // Test cross assign of map values
 fn test_cross_assign_of_map() {
-	mut a := map{
+	mut a := {
 		'one': 1
 		'two': 2
 	}
@@ -42,7 +42,7 @@ fn foo2(mut a map[string]int) {
 }
 
 fn test_cross_assign_of_map_in_fn() {
-	mut a := map{
+	mut a := {
 		'one': 1
 		'two': 2
 	}
@@ -94,7 +94,7 @@ fn test_cross_assign_of_struct_in_fn() {
 // Test cross assign of mixed types
 fn test_cross_assign_of_mixed_types() {
 	mut a := [0, 1]
-	mut m := map{
+	mut m := {
 		'one': 1
 		'two': 2
 	}
@@ -119,7 +119,7 @@ fn foo(mut a []int, mut m map[string]int, mut x Zoo) {
 
 fn test_cross_assign_of_mixed_types_in_fn() {
 	mut a := [0, 1]
-	mut m := map{
+	mut m := {
 		'one': 1
 		'two': 2
 	}
@@ -140,7 +140,7 @@ fn test_cross_assign_of_mixed_types_in_fn() {
 // Test cross assign of complex types
 fn test_cross_assign_of_complex_types() {
 	mut a := [0, 1]
-	mut m := map{
+	mut m := {
 		'one': 1
 		'two': 2
 	}
diff --git a/vlib/v/tests/fn_index_direct_call_test.v b/vlib/v/tests/fn_index_direct_call_test.v
index bef34a404a..45f6e7dc3b 100644
--- a/vlib/v/tests/fn_index_direct_call_test.v
+++ b/vlib/v/tests/fn_index_direct_call_test.v
@@ -18,7 +18,7 @@ fn test_fn_array_direct_call() {
 }
 
 fn test_fn_map_direct_call() {
-	a := map{
+	a := {
 		'aaa': fn () string {
 			return 'aaa'
 		}
diff --git a/vlib/v/tests/fn_mut_args_test.v b/vlib/v/tests/fn_mut_args_test.v
index 638cb3239e..41e0a29546 100644
--- a/vlib/v/tests/fn_mut_args_test.v
+++ b/vlib/v/tests/fn_mut_args_test.v
@@ -12,7 +12,7 @@ fn test_fn_mut_args_of_array() {
 }
 
 fn init_map(mut n map[string]int) {
-	n = map{
+	n = {
 		'one': 1
 	}
 }
@@ -21,7 +21,7 @@ fn test_fn_mut_args_of_map() {
 	mut m := map[string]int{}
 	init_map(mut m)
 	println(m)
-	assert m == map{
+	assert m == {
 		'one': 1
 	}
 }
diff --git a/vlib/v/tests/for_in_containers_of_fixed_array_test.v b/vlib/v/tests/for_in_containers_of_fixed_array_test.v
index 2971140a55..fd020f6fe4 100644
--- a/vlib/v/tests/for_in_containers_of_fixed_array_test.v
+++ b/vlib/v/tests/for_in_containers_of_fixed_array_test.v
@@ -64,7 +64,7 @@ fn test_for_in_fixed_array_of_fixed_array_literal() {
 
 fn test_for_in_map_of_fixed_array() {
 	mut rets := []string{}
-	m := map{
+	m := {
 		'aa': [1, 2]!
 		'bb': [3, 4]!
 		'cc': [5, 6]!
@@ -82,7 +82,7 @@ fn test_for_in_map_of_fixed_array() {
 fn test_for_in_map_of_fixed_array_literal() {
 	mut rets := []string{}
 
-	for k, v in map{
+	for k, v in {
 		'aa': [1, 2]!
 		'bb': [3, 4]!
 		'cc': [5, 6]!
@@ -97,7 +97,7 @@ fn test_for_in_map_of_fixed_array_literal() {
 
 fn test_for_mut_in_map_of_fixed_array() {
 	mut rets := []string{}
-	mut m := map{
+	mut m := {
 		'aa': [1, 2]!
 		'bb': [3, 4]!
 		'cc': [5, 6]!
diff --git a/vlib/v/tests/for_in_mut_val_test.v b/vlib/v/tests/for_in_mut_val_test.v
index d5dfd8e65e..cf4fbdc1a6 100644
--- a/vlib/v/tests/for_in_mut_val_test.v
+++ b/vlib/v/tests/for_in_mut_val_test.v
@@ -31,7 +31,7 @@ fn foo3(mut m map[string][3]int) {
 }
 
 fn test_fn_mut_val_of_map() {
-	mut m := map{
+	mut m := {
 		'hello': [1, 2, 3]!
 	}
 	foo3(mut m)
@@ -46,7 +46,7 @@ fn foo4(mut m map[string][3]int) {
 }
 
 fn test_for_in_mut_val_of_map() {
-	mut m := map{
+	mut m := {
 		'hello': [1, 2, 3]!
 	}
 	foo4(mut m)
@@ -55,7 +55,7 @@ fn test_for_in_mut_val_of_map() {
 }
 
 fn test_for_in_mut_val_of_map_direct() {
-	mut m := map{
+	mut m := {
 		'foo': 1
 		'bar': 2
 	}
@@ -67,16 +67,16 @@ fn test_for_in_mut_val_of_map_direct() {
 }
 
 fn test_for_in_mut_val_of_map_fixed_array() {
-	mut m := map{
-		'foo': [map{
+	mut m := {
+		'foo': [{
 			'a': 1
 		}]!
-		'bar': [map{
+		'bar': [{
 			'b': 2
 		}]!
 	}
 	for _, mut j in m {
-		j = [map{
+		j = [{
 			'c': 3
 		}]!
 	}
diff --git a/vlib/v/tests/for_label_continue_break_test.v b/vlib/v/tests/for_label_continue_break_test.v
index f7f01f2cd3..60eeef077c 100644
--- a/vlib/v/tests/for_label_continue_break_test.v
+++ b/vlib/v/tests/for_label_continue_break_test.v
@@ -62,7 +62,7 @@ fn test_for_in_fixed_array_label_continue_break() {
 
 fn test_for_in_map_label_continue_break() {
 	mut rets := []string{}
-	m := map{
+	m := {
 		'a': 4
 		'b': 5
 		'c': 6
diff --git a/vlib/v/tests/for_loops_test.v b/vlib/v/tests/for_loops_test.v
index b09bd2819a..0f347a28f1 100644
--- a/vlib/v/tests/for_loops_test.v
+++ b/vlib/v/tests/for_loops_test.v
@@ -44,7 +44,7 @@ fn test_for_char_in_string() {
 }
 
 fn test_for_string_in_map() {
-	m := map{
+	m := {
 		'a': 'b'
 		'c': 'd'
 	}
@@ -54,7 +54,7 @@ fn test_for_string_in_map() {
 	}
 	assert acc == 'a: b, c: d, '
 
-	mut m2 := map{
+	mut m2 := {
 		'a': 3
 		'b': 4
 		'c': 5
diff --git a/vlib/v/tests/generic_fn_infer_map_test.v b/vlib/v/tests/generic_fn_infer_map_test.v
index 33e63b524d..21927d7c27 100644
--- a/vlib/v/tests/generic_fn_infer_map_test.v
+++ b/vlib/v/tests/generic_fn_infer_map_test.v
@@ -4,32 +4,32 @@ fn print_map<K, V>(x map[K]V) string {
 }
 
 fn test_generics_infer_map_type() {
-	m1 := map{
+	m1 := {
 		'one': 1
 	}
 	assert print_map(m1) == "{'one': 1}"
 
-	m2 := map{
+	m2 := {
 		'one': 1.1
 	}
 	assert print_map(m2) == "{'one': 1.1}"
 
-	m3 := map{
+	m3 := {
 		'one': 'a'
 	}
 	assert print_map(m3) == "{'one': 'a'}"
 
-	m4 := map{
+	m4 := {
 		1: 'one'
 	}
 	assert print_map(m4) == "{1: 'one'}"
 
-	m5 := map{
+	m5 := {
 		1.1: 'one'
 	}
 	assert print_map(m5) == "{1.1: 'one'}"
 
-	m6 := map{
+	m6 := {
 		'a': 'one'
 	}
 	assert print_map(m6) == "{'a': 'one'}"
diff --git a/vlib/v/tests/generic_fn_infer_multi_paras_test.v b/vlib/v/tests/generic_fn_infer_multi_paras_test.v
index 71928342ff..6b4562b140 100644
--- a/vlib/v/tests/generic_fn_infer_multi_paras_test.v
+++ b/vlib/v/tests/generic_fn_infer_multi_paras_test.v
@@ -41,7 +41,7 @@ fn test_generic_fn_infer_multi_paras() {
 		page: 'one'
 		var_one: 'variable one'
 		var_two: 'variable two'
-		var_three: {
+		var_three: Two_data{
 			title: 'what a title'
 			content: 'what a content'
 		}
diff --git a/vlib/v/tests/generics_return_generics_struct_test.v b/vlib/v/tests/generics_return_generics_struct_test.v
index a48ae4da44..18f9f853d7 100644
--- a/vlib/v/tests/generics_return_generics_struct_test.v
+++ b/vlib/v/tests/generics_return_generics_struct_test.v
@@ -6,7 +6,7 @@ mut:
 }
 
 pub fn new_some<T>(value T) Optional<T> {
-	return {
+	return Optional{
 		value: value
 		some: true
 	}
@@ -40,7 +40,7 @@ pub struct Foo {
 }
 
 pub fn (f Foo) new_some<T>(value T) Optional<T> {
-	return {
+	return Optional{
 		value: value
 		some: true
 	}
diff --git a/vlib/v/tests/generics_return_inconsistent_types_generics_struct_test.v b/vlib/v/tests/generics_return_inconsistent_types_generics_struct_test.v
index 7bbf47b7ce..ce742ae3d4 100644
--- a/vlib/v/tests/generics_return_inconsistent_types_generics_struct_test.v
+++ b/vlib/v/tests/generics_return_inconsistent_types_generics_struct_test.v
@@ -7,7 +7,7 @@ mut:
 }
 
 pub fn new_some<T, B>(value T, b B) Optional<T> {
-	return {
+	return Optional{
 		value: value
 		some: true
 		typ: typeof(b).name
@@ -54,7 +54,7 @@ pub struct Foo {
 }
 
 pub fn (f Foo) new_some<T, B>(value T, b B) Optional<T> {
-	return {
+	return Optional{
 		value: value
 		some: true
 		typ: typeof(b).name
diff --git a/vlib/v/tests/generics_return_multiple_generics_struct_test.v b/vlib/v/tests/generics_return_multiple_generics_struct_test.v
index 3485288616..f8e876039b 100644
--- a/vlib/v/tests/generics_return_multiple_generics_struct_test.v
+++ b/vlib/v/tests/generics_return_multiple_generics_struct_test.v
@@ -5,7 +5,7 @@ mut:
 }
 
 fn new_foo<A, B>(a A, b B) Foo<A, B> {
-	return {
+	return Foo{
 		a: a
 		b: b
 	}
diff --git a/vlib/v/tests/generics_test.v b/vlib/v/tests/generics_test.v
index 714d4ea540..7467d56fb4 100644
--- a/vlib/v/tests/generics_test.v
+++ b/vlib/v/tests/generics_test.v
@@ -11,7 +11,7 @@ fn test_identity() {
 	assert simple<string>('g') + 'h' == 'gh'
 
 	assert simple<[]int>([1])[0] == 1
-	assert simple<map[string]string>(map{
+	assert simple<map[string]string>({
 		'a': 'b'
 	})['a'] == 'b'
 
@@ -399,7 +399,7 @@ fn test_pass_generic_to_nested_function() {
 }
 
 fn generic_return_map<M>() map[string]M {
-	return map{
+	return {
 		'': M{}
 	}
 }
@@ -409,8 +409,8 @@ fn test_generic_return_map() {
 }
 
 fn generic_return_nested_map<M>() map[string]map[string]M {
-	return map{
-		'': map{
+	return {
+		'': {
 			'': M{}
 		}
 	}
diff --git a/vlib/v/tests/if_guard_test.v b/vlib/v/tests/if_guard_test.v
index f889818098..e6866181d7 100644
--- a/vlib/v/tests/if_guard_test.v
+++ b/vlib/v/tests/if_guard_test.v
@@ -26,7 +26,7 @@ fn test_fn_return_empty() {
 }
 
 fn test_map_get() {
-	mut m := map{
+	mut m := {
 		'xy': 5
 		'zu': 7
 	}
@@ -42,7 +42,7 @@ fn test_map_get() {
 }
 
 fn test_map_get_empty() {
-	mut m := map{
+	mut m := {
 		'xy': 5
 		'zu': 7
 	}
diff --git a/vlib/v/tests/in_expression_test.v b/vlib/v/tests/in_expression_test.v
index 356fed7f46..8d331f0bb1 100644
--- a/vlib/v/tests/in_expression_test.v
+++ b/vlib/v/tests/in_expression_test.v
@@ -115,7 +115,7 @@ fn test_in_expression_in_alias() {
 	assert 0 in arr
 	assert 100 !in arr
 
-	m := MapAlias(map{
+	m := MapAlias({
 		'one':   1
 		'two':   2
 		'three': 3
@@ -125,7 +125,7 @@ fn test_in_expression_in_alias() {
 }
 
 fn test_in_expression_in_map() {
-	m := map{
+	m := {
 		'one':   1
 		'two':   2
 		'three': 3
@@ -134,14 +134,6 @@ fn test_in_expression_in_map() {
 	assert 'four' !in m
 }
 
-fn test_in_expression_in_string() {
-	s := 'abcd'
-	assert 'a' in s
-	assert 'ab' in s
-	assert 'abcd' in s
-	assert 'dbca' !in s
-}
-
 fn test_optimized_in_expression() {
 	mut a := false
 	a = true && 2 in [1, 2]
diff --git a/vlib/v/tests/init_global_test.v b/vlib/v/tests/init_global_test.v
index b94e6b0f69..cade1893bc 100644
--- a/vlib/v/tests/init_global_test.v
+++ b/vlib/v/tests/init_global_test.v
@@ -69,7 +69,7 @@ __global (
 	testexpl  = f32(7)
 	testfn    = get_u64()
 	testarr   = []f64{len: 10, init: 2.75}
-	testmap   = map{
+	testmap   = {
 		'qwe': 2.5
 		'asd': -7.25
 		'yxc': 3.125
diff --git a/vlib/v/tests/inout/cli_command_no_execute.vv b/vlib/v/tests/inout/cli_command_no_execute.vv
index ba6dfe5562..fd145e13ec 100644
--- a/vlib/v/tests/inout/cli_command_no_execute.vv
+++ b/vlib/v/tests/inout/cli_command_no_execute.vv
@@ -1,11 +1,11 @@
 import cli {Command}
 
 fn main() {
-	mut cmd := Command {
+	mut cmd := Command{
 		name: 'cmd'
 	}
-	cmd.add_command({
+	cmd.add_command(
 		name: 'foo'
-	})
+	)
 	cmd.parse(['', 'cmd', 'foo'])
 }
diff --git a/vlib/v/tests/interface_auto_str_gen_test.v b/vlib/v/tests/interface_auto_str_gen_test.v
index 134f2e3d2e..c7e85bb964 100644
--- a/vlib/v/tests/interface_auto_str_gen_test.v
+++ b/vlib/v/tests/interface_auto_str_gen_test.v
@@ -31,7 +31,7 @@ struct Holder2 {
 fn test_auto_str_gen_for_complex_interface_types() {
 	a := Animal(Dog{'hi'})
 	h := Holder{a}
-	m := map{
+	m := {
 		'dsa': h
 	}
 	h2 := Holder2{m, 'N/A'}
diff --git a/vlib/v/tests/interop_test.v b/vlib/v/tests/interop_test.v
index e37bc131fb..f8e13100a1 100644
--- a/vlib/v/tests/interop_test.v
+++ b/vlib/v/tests/interop_test.v
@@ -9,7 +9,9 @@ fn C.c(a string, b ...string) string
 fn C.d(a ...int)
 
 fn JS.e(a string, b ...string) int
-fn JS.f(a &Foo) // TODO: Should this be allowed?
+fn JS.f(a &Foo)
+
+// TODO: Should this be allowed?
 
 fn C.g(string, ...int)
 fn C.h(&int)
diff --git a/vlib/v/tests/map_alias_key_test.v b/vlib/v/tests/map_alias_key_test.v
index 8c1ac0a307..a9865c721b 100644
--- a/vlib/v/tests/map_alias_key_test.v
+++ b/vlib/v/tests/map_alias_key_test.v
@@ -2,7 +2,7 @@ type Type = int
 type RType = rune
 
 fn test_map_key_alias() {
-	mut m_int := map{
+	mut m_int := {
 		12: '12'
 		2:  '2'
 	}
@@ -10,7 +10,7 @@ fn test_map_key_alias() {
 	m_int[Type(15)] = '15'
 	assert m_int.str() == "{12: '12', 2: '2', 14: '14', 15: '15'}"
 	//// /// ///// //
-	mut m_rune := map{
+	mut m_rune := {
 		`a`: '12'
 		`l`: '14'
 	}
@@ -20,13 +20,13 @@ fn test_map_key_alias() {
 }
 
 fn test_map_alias_key_init() {
-	m_int := map{
+	m_int := {
 		Type(12): '12'
 		Type(2):  '2'
 	}
 	assert m_int.str() == "{12: '12', 2: '2'}"
 	//// // ///// //
-	m_rune := map{
+	m_rune := {
 		RType(`a`): '12'
 		RType(`l`): '14'
 	}
diff --git a/vlib/v/tests/map_and_array_with_fns_test.v b/vlib/v/tests/map_and_array_with_fns_test.v
index b657dc8a52..325b80503d 100644
--- a/vlib/v/tests/map_and_array_with_fns_test.v
+++ b/vlib/v/tests/map_and_array_with_fns_test.v
@@ -37,12 +37,12 @@ fn test_array_with_fns() {
 }
 
 fn test_map_with_fns() {
-	mut a := map{
+	mut a := {
 		'one': foo
 		'two': foo2
 	}
 	assert a.len == 2
-	assert (a == map{
+	assert (a == {
 		'one': foo
 		'two': foo2
 	}) == true
@@ -55,7 +55,7 @@ fn test_map_with_fns() {
 	assert f2('zzzz', '') == 24
 	f3 := a['two']
 	assert f3('aaaaa', '') == 15
-	mut b := map{
+	mut b := {
 		'one': foo
 	}
 	b['one'] = a['one']
@@ -78,7 +78,7 @@ fn test_map_and_array_with_fns_typeof_and_direct_call() {
 	a := [foo3]
 	assert typeof(a).name == '[]fn (string) int'
 	assert a[0]('hello') == 15
-	b := map{
+	b := {
 		'one': foo3
 	}
 	assert typeof(b).name == 'map[string]fn (string) int'
@@ -111,11 +111,11 @@ fn bar4(mut m map[string]fn (string) int) int {
 }
 
 fn test_map_of_fns_as_argument() {
-	m1 := map{
+	m1 := {
 		'fn': foo3
 	}
 	assert bar3(m1) == 12
-	mut m2 := map{
+	mut m2 := {
 		'fn': foo3
 	}
 	assert bar4(mut m2) == 22
diff --git a/vlib/v/tests/map_assign_array_of_interface_test.v b/vlib/v/tests/map_assign_array_of_interface_test.v
index de3f89fb85..d04a789fc2 100644
--- a/vlib/v/tests/map_assign_array_of_interface_test.v
+++ b/vlib/v/tests/map_assign_array_of_interface_test.v
@@ -21,7 +21,7 @@ pub fn (dog Dog) say(message string) ? {
 fn test_map_assign_array_of_interface() {
 	mut owner_and_animals := map[string][]Animal{}
 
-	owner_and_animals = map{
+	owner_and_animals = {
 		'John Doe': [
 			Cat{
 				name: 'Bobby'
diff --git a/vlib/v/tests/map_complex_fixed_array_test.v b/vlib/v/tests/map_complex_fixed_array_test.v
index 5dc95ec9d4..9f9db33e95 100644
--- a/vlib/v/tests/map_complex_fixed_array_test.v
+++ b/vlib/v/tests/map_complex_fixed_array_test.v
@@ -1,7 +1,7 @@
 fn foo(mut m map[string][1][2]map[string]int) {
-	m['foo'] = [[map{
+	m['foo'] = [[{
 		'bar': 1
-	}, map{
+	}, {
 		'baz': 3
 	}]!]!
 }
@@ -15,9 +15,9 @@ fn test_complex_map_fixed_array() {
 
 fn test_innermost_value_of_map_fixed_array() {
 	mut m := map[string][1][2]map[string]int{}
-	m['foo'] = [[map{
+	m['foo'] = [[{
 		'bar': 1
-	}, map{
+	}, {
 		'baz': 3
 	}]!]!
 	println(m['foo'][0][0]['bar'])
@@ -27,16 +27,16 @@ fn test_innermost_value_of_map_fixed_array() {
 }
 
 fn test_complex_map_high_order_fixed_array() {
-	mut m := map{
-		'foo': [[map{
+	mut m := {
+		'foo': [[{
 			'a': 1
 		}]!]!
-		'bar': [[map{
+		'bar': [[{
 			'b': 2
 		}]!]!
 	}
 	for _, mut j in m {
-		j = [[map{
+		j = [[{
 			'c': 3
 		}]!]!
 	}
diff --git a/vlib/v/tests/map_equality_test.v b/vlib/v/tests/map_equality_test.v
index d0864f2c13..713b966611 100644
--- a/vlib/v/tests/map_equality_test.v
+++ b/vlib/v/tests/map_equality_test.v
@@ -1,13 +1,13 @@
 fn test_map_equality() {
-	a1 := map{
+	a1 := {
 		'a': 1
 		'b': 2
 	}
-	b1 := map{
+	b1 := {
 		'b': 2
 		'a': 1
 	}
-	c1 := map{
+	c1 := {
 		'a': 2
 		'b': 1
 	}
@@ -15,21 +15,21 @@ fn test_map_equality() {
 	assert a1 == b1
 	assert a1 != c1
 
-	a2 := map{
+	a2 := {
 		'a': 1
 	}
-	b2 := map{
+	b2 := {
 		'a': 1
 		'b': 2
 	}
 
 	assert a2 != b2
 
-	a3 := map{
+	a3 := {
 		'a': '1'
 		'b': '2'
 	}
-	b3 := map{
+	b3 := {
 		'b': '2'
 		'a': '1'
 	}
diff --git a/vlib/v/tests/map_key_expr_test.v b/vlib/v/tests/map_key_expr_test.v
index afa149b600..cea8041dcf 100644
--- a/vlib/v/tests/map_key_expr_test.v
+++ b/vlib/v/tests/map_key_expr_test.v
@@ -1,7 +1,7 @@
 const (
 	alpha = 'a'
 	beta  = 'b'
-	m     = map{
+	m     = {
 		alpha: 'Alpha'
 		beta:  'Beta'
 	}
@@ -18,7 +18,7 @@ enum Enum {
 }
 
 const (
-	m2 = map{
+	m2 = {
 		Enum.a.str(): 'first'
 		Enum.b.str(): 'second'
 	}
diff --git a/vlib/v/tests/map_literals_method_call_test.v b/vlib/v/tests/map_literals_method_call_test.v
index 83b7a42cde..913d09f731 100644
--- a/vlib/v/tests/map_literals_method_call_test.v
+++ b/vlib/v/tests/map_literals_method_call_test.v
@@ -1,7 +1,7 @@
 fn test_map_literals_method_call() {
-	a := 1 in map{
+	a := 1 in {
 		1: 1
-	}.keys().map(map{
+	}.keys().map({
 		1: 1
 	}[it])
 
diff --git a/vlib/v/tests/map_to_string_test.v b/vlib/v/tests/map_to_string_test.v
index cbb8b39bd2..d5d03357ea 100644
--- a/vlib/v/tests/map_to_string_test.v
+++ b/vlib/v/tests/map_to_string_test.v
@@ -22,7 +22,7 @@ fn test_interpolation_map_to_string() {
 	c['2'] = false
 	assert '$c' == "{'1': true, '2': false}"
 
-	d := map{
+	d := {
 		'f1': 1.1
 		'f2': 2.2
 		'f3': 3.3
@@ -42,7 +42,7 @@ fn test_interpolation_map_to_string() {
 	assert s.contains("}, '2': Test{")
 	assert s.contains("y: 'def'")
 
-	f := map{
+	f := {
 		'hello': [1, 2, 3]!
 	}
 	assert '$f' == "{'hello': [1, 2, 3]}"
diff --git a/vlib/v/tests/map_type_alias_test.v b/vlib/v/tests/map_type_alias_test.v
index d55a542166..6148b43a16 100644
--- a/vlib/v/tests/map_type_alias_test.v
+++ b/vlib/v/tests/map_type_alias_test.v
@@ -1,7 +1,7 @@
 type Test = map[string]string
 
 fn test_index() {
-	t := Test(map{
+	t := Test({
 		'c': 'abc'
 	})
 	assert t['c'] == 'abc'
diff --git a/vlib/v/tests/maps_equal_test.v b/vlib/v/tests/maps_equal_test.v
index fbbf8e5ffc..1bf14ef607 100644
--- a/vlib/v/tests/maps_equal_test.v
+++ b/vlib/v/tests/maps_equal_test.v
@@ -1,8 +1,8 @@
 fn test_string_int() {
-	mut m := map{
+	mut m := {
 		'hi': 4
 	}
-	m2 := map{
+	m2 := {
 		'hi': 5
 	}
 	assert m != m2
diff --git a/vlib/v/tests/match_compound_type_cond_test.v b/vlib/v/tests/match_compound_type_cond_test.v
index b38f907e85..9f072b875d 100644
--- a/vlib/v/tests/match_compound_type_cond_test.v
+++ b/vlib/v/tests/match_compound_type_cond_test.v
@@ -22,11 +22,11 @@ fn test_match_array_or_map_cond() {
 	assert ret2
 
 	// map
-	y3 := map{
+	y3 := {
 		1: 11
 		2: 22
 	}
-	x3 := map{
+	x3 := {
 		1: 11
 		2: 22
 	}
diff --git a/vlib/v/tests/match_in_map_init_test.v b/vlib/v/tests/match_in_map_init_test.v
index 30eda3e2af..5b2f82073a 100644
--- a/vlib/v/tests/match_in_map_init_test.v
+++ b/vlib/v/tests/match_in_map_init_test.v
@@ -1,7 +1,7 @@
 fn test_match_in_map_init() {
 	ret := foo()
 	println(ret)
-	assert ret == map{
+	assert ret == {
 		'token': 'a'
 		'sleep': '30'
 		'every': '1'
@@ -14,7 +14,7 @@ fn foo() map[string]string {
 	cfg['sleep'] = ['30', '60']
 	cfg['every'] = ['1', '5']
 
-	return map{
+	return {
 		'token': cfg['token'][0]
 		'sleep': match cfg['sleep'][0].len {
 			0 { '60' }
diff --git a/vlib/v/tests/match_in_map_or_expr_test.v b/vlib/v/tests/match_in_map_or_expr_test.v
index 6f80725947..ac33c2b2bb 100644
--- a/vlib/v/tests/match_in_map_or_expr_test.v
+++ b/vlib/v/tests/match_in_map_or_expr_test.v
@@ -1,6 +1,6 @@
 fn test_match_in_map_or_expr() {
 	a := 5
-	some_map := map{
+	some_map := {
 		3: '3'
 		4: '4'
 	}
diff --git a/vlib/v/tests/missing_config_struct_arg_test.v b/vlib/v/tests/missing_config_struct_arg_test.v
index 43c46c2581..0e206bcaab 100644
--- a/vlib/v/tests/missing_config_struct_arg_test.v
+++ b/vlib/v/tests/missing_config_struct_arg_test.v
@@ -17,7 +17,7 @@ fn bar(b Bar) Bar {
 
 fn test_missing_config_struct_arg() {
 	assert foo() == 0
-	assert bar() == {
+	assert bar() == Bar{
 		x: 0
 		y: 1234
 	}
diff --git a/vlib/v/tests/mut_test.v b/vlib/v/tests/mut_test.v
index b8acb6610a..514943d596 100644
--- a/vlib/v/tests/mut_test.v
+++ b/vlib/v/tests/mut_test.v
@@ -173,7 +173,7 @@ fn test_mut_9() {
 		v = v + 1 // v: 1
 		mut vv := v // vv: 1, v: 1
 		vv = vv + v // vv: 2, v: 1
-		foo := map{
+		foo := {
 			'a': v
 			'b': vv
 		}
@@ -327,7 +327,7 @@ fn foo7(mut m map[string]int) {
 }
 
 fn test_mut_16() {
-	mut m := map{
+	mut m := {
 		'one': 100
 		'two': 2
 	}
@@ -335,7 +335,7 @@ fn test_mut_16() {
 }
 
 fn test_mut_17() {
-	mut arr := [map{
+	mut arr := [{
 		'foo': 1
 	}]
 	for _, mut j in arr {
@@ -346,10 +346,10 @@ fn test_mut_17() {
 		}
 		println(j)
 		println(k)
-		assert j == map{
+		assert j == {
 			'foo': 0
 		}
-		assert k == map{
+		assert k == {
 			'foo': 10
 		}
 	}
diff --git a/vlib/v/tests/shared_arg_test.v b/vlib/v/tests/shared_arg_test.v
index 405f85ab32..837fbb4166 100644
--- a/vlib/v/tests/shared_arg_test.v
+++ b/vlib/v/tests/shared_arg_test.v
@@ -39,7 +39,7 @@ fn test_shared_as_value() {
 		a: 5
 	}
 	shared a := [3, 4, 6, 13, -23]
-	shared m := map{
+	shared m := {
 		'qw':   12.75
 		'yxcv': -3.125
 		'poiu': 88.0625
@@ -70,7 +70,7 @@ fn test_shared_as_mut() {
 		a: 5
 	}
 	shared a := [3, 4, 6, 13, -23]
-	shared m := map{
+	shared m := {
 		'qw':   12.75
 		'yxcv': -3.125
 		'poiu': 88.0625
diff --git a/vlib/v/tests/shared_autolock_test.v b/vlib/v/tests/shared_autolock_test.v
index e5be9ad3a6..4ca7b065c4 100644
--- a/vlib/v/tests/shared_autolock_test.v
+++ b/vlib/v/tests/shared_autolock_test.v
@@ -23,7 +23,7 @@ fn inc_map_elem(shared b map[string]int, k string) {
 }
 
 fn test_autolock_map() {
-	shared m := &map{
+	shared m := &{
 		'xy':  1
 		'qwe': 2
 		'asd': 7
diff --git a/vlib/v/tests/shared_elem_test.v b/vlib/v/tests/shared_elem_test.v
index c2b10f6be0..b6a1512e68 100644
--- a/vlib/v/tests/shared_elem_test.v
+++ b/vlib/v/tests/shared_elem_test.v
@@ -116,7 +116,7 @@ fn test_shared_auto_init_map() {
 
 fn test_shared_map_in_struct() {
 	x := Hjk{
-		m: map{
+		m: {
 			'st': -6.0625
 			'xy': 12.125
 			'rz': 2.25
diff --git a/vlib/v/tests/shared_lock_expr_test.v b/vlib/v/tests/shared_lock_expr_test.v
index 13376cb62a..390cc9197a 100644
--- a/vlib/v/tests/shared_lock_expr_test.v
+++ b/vlib/v/tests/shared_lock_expr_test.v
@@ -67,7 +67,7 @@ fn test_mult_ret_method() {
 }
 
 fn test_shared_lock_map_index_expr() {
-	shared m := map{
+	shared m := {
 		'qwe': 'asd'
 	}
 	for key in ['fdf', 'qwe'] {
diff --git a/vlib/v/tests/shared_map_test.v b/vlib/v/tests/shared_map_test.v
index 38fd29ac46..187274e257 100644
--- a/vlib/v/tests/shared_map_test.v
+++ b/vlib/v/tests/shared_map_test.v
@@ -10,7 +10,7 @@ fn incr(shared foo map[string]int, key string, mut sem sync.Semaphore) {
 }
 
 fn test_shared_array() {
-	shared foo := map{
+	shared foo := {
 		'p': 10
 		'q': 0
 	}
@@ -40,12 +40,12 @@ fn test_shared_array() {
 }
 
 fn test_shared_init_syntax() {
-	shared foo := &map{
+	shared foo := &{
 		'p':      17
 		'q':      -3
 		'qwertz': 10
 	}
-	shared bar := map{
+	shared bar := {
 		'wer':  13.75
 		'cvbn': -7.25
 		'asd':  -0.0625
@@ -75,7 +75,7 @@ fn test_shared_init_syntax() {
 }
 
 fn new_map() map[string]f64 {
-	m := map{
+	m := {
 		'qwe': 34.25
 		'yxc': 9.125
 		'tzu': -7.5
@@ -120,7 +120,7 @@ fn test_shared_array_iteration() {
 }
 
 fn test_shared_map_iteration() {
-	shared m := map{
+	shared m := {
 		'qwe': 12.75
 		'rtz': -0.125
 		'k':   17
diff --git a/vlib/v/tests/str_gen_test.v b/vlib/v/tests/str_gen_test.v
index 0ca979089d..4641071f8c 100644
--- a/vlib/v/tests/str_gen_test.v
+++ b/vlib/v/tests/str_gen_test.v
@@ -55,7 +55,7 @@ fn test_array_of_strings() {
 }
 
 fn test_map_of_ints() {
-	aa := map{
+	aa := {
 		'a': 1
 		'b': 2
 		'c': 3
@@ -65,7 +65,7 @@ fn test_map_of_ints() {
 }
 
 fn test_map_of_strings() {
-	aa := map{
+	aa := {
 		'a': '1'
 		'b': '2'
 		'c': '3'
@@ -75,7 +75,7 @@ fn test_map_of_strings() {
 }
 
 fn test_map_of_floats() {
-	aa := map{
+	aa := {
 		'a': 1.1
 		'b': 2.2
 		'c': 3.3
@@ -85,7 +85,7 @@ fn test_map_of_floats() {
 }
 
 fn test_map_of_runes() {
-	aa := map{
+	aa := {
 		'a': `a`
 		'b': `b`
 		'c': `c`
@@ -95,7 +95,7 @@ fn test_map_of_runes() {
 }
 
 fn test_map_of_bools() {
-	aa := map{
+	aa := {
 		'a': true
 		'b': false
 		'c': true
@@ -242,7 +242,7 @@ struct MapWithStruct {
 }
 
 fn test_map_with_struct() {
-	a := MapWithStruct{map{
+	a := MapWithStruct{{
 		'test': TestStruct{}
 	}}
 	assert a.str() == "MapWithStruct{\n    foo: {'test': TestStruct{\n        x: 0\n    }}\n}"
diff --git a/vlib/v/tests/string_interpolation_alias_test.v b/vlib/v/tests/string_interpolation_alias_test.v
index 0f61cd3c4a..c8454be49d 100644
--- a/vlib/v/tests/string_interpolation_alias_test.v
+++ b/vlib/v/tests/string_interpolation_alias_test.v
@@ -11,7 +11,7 @@ fn test_fixed_array_alias_string() {
 }
 
 fn test_map_alias_string() {
-	m := map{
+	m := {
 		'one': Literal('1')
 		'two': Literal('2')
 	}
diff --git a/vlib/v/tests/string_interpolation_array_test.v b/vlib/v/tests/string_interpolation_array_test.v
index e6eb9ca6b4..b71b4ad4ee 100644
--- a/vlib/v/tests/string_interpolation_array_test.v
+++ b/vlib/v/tests/string_interpolation_array_test.v
@@ -79,11 +79,11 @@ fn test_array_of_strings_interpolation() {
 
 fn test_array_of_map_interpolation() {
 	mut a := []map[string]int{}
-	a << map{
+	a << {
 		'a': int(1)
 		'b': 2
 	}
-	a << map{
+	a << {
 		'c': int(3)
 		'd': 4
 	}
diff --git a/vlib/v/tests/string_interpolation_function_test.v b/vlib/v/tests/string_interpolation_function_test.v
index 8a4f739a29..3f4bbe0222 100644
--- a/vlib/v/tests/string_interpolation_function_test.v
+++ b/vlib/v/tests/string_interpolation_function_test.v
@@ -40,7 +40,7 @@ fn test_function_interpolation_in_array() {
 }
 
 fn test_function_interpolation_in_map() {
-	m := map{
+	m := {
 		'aaa': fn () string {
 			return 'aaa'
 		}
diff --git a/vlib/v/tests/string_interpolation_multistmt_test.v b/vlib/v/tests/string_interpolation_multistmt_test.v
index 7682659c26..e704468a6f 100644
--- a/vlib/v/tests/string_interpolation_multistmt_test.v
+++ b/vlib/v/tests/string_interpolation_multistmt_test.v
@@ -8,7 +8,7 @@ fn test_array_map_interpolation() {
 }
 
 fn test_json_encode_interpolation() {
-	object := map{
+	object := {
 		'example': 'string'
 		'other':   'data'
 	}
diff --git a/vlib/v/tests/string_interpolation_shared_test.v b/vlib/v/tests/string_interpolation_shared_test.v
index 728fd25a85..771181f284 100644
--- a/vlib/v/tests/string_interpolation_shared_test.v
+++ b/vlib/v/tests/string_interpolation_shared_test.v
@@ -28,7 +28,7 @@ fn test_shared_array_interpolation() {
 }
 
 fn test_shared_map_interpolation() {
-	shared m := map{
+	shared m := {
 		'xy':  12.125
 		'qwe': -6.0625
 		'foo': 0.5
@@ -44,7 +44,7 @@ fn test_print_shared() {
 		x: 6.25
 	}
 	shared a := [0.25, -6.125, 12.5]
-	shared m := map{
+	shared m := {
 		'xy':  12.125
 		'qwe': -6.0625
 		'foo': 0.5
diff --git a/vlib/v/tests/string_interpolation_struct_test.v b/vlib/v/tests/string_interpolation_struct_test.v
index 087926b67c..cda7d2bbf5 100644
--- a/vlib/v/tests/string_interpolation_struct_test.v
+++ b/vlib/v/tests/string_interpolation_struct_test.v
@@ -42,7 +42,7 @@ struct Info {
 fn test_struct_map_field_string_interpolation() {
 	info := Info{
 		name: 'test'
-		dict: map{
+		dict: {
 			'a': int(1)
 			'b': 2
 		}
diff --git a/vlib/v/tests/struct_test.v b/vlib/v/tests/struct_test.v
index 94fb957b9c..db5a242696 100644
--- a/vlib/v/tests/struct_test.v
+++ b/vlib/v/tests/struct_test.v
@@ -170,7 +170,7 @@ fn test_assoc_with_vars() {
 	}
 	assert merged.a == 42
 	assert merged.b == 7
-	merged = {
+	merged = Def{
 		...def2
 		b: 9
 	}
@@ -278,8 +278,8 @@ fn test_struct_literal_args() {
 	foo_config(10, n: 40)
 	foo_config(40, n: 30, def: 40)
 
-	bar_config({}, 10)
-	bar_config({ def: 4 }, 4)
+	bar_config(Config{}, 10)
+	bar_config(Config{ def: 4 }, 4)
 
 	mut c_ := Config{
 		def: 10
@@ -307,7 +307,7 @@ struct Country {
 fn test_levels() {
 	_ := Country{
 		name: 'UK'
-		capital: {
+		capital: City{
 			name: 'London'
 			population: 10
 		}
diff --git a/vlib/v/tests/sumtype_str_for_subtypes_with_str_test.v b/vlib/v/tests/sumtype_str_for_subtypes_with_str_test.v
index f031ca1371..a9b34f03b5 100644
--- a/vlib/v/tests/sumtype_str_for_subtypes_with_str_test.v
+++ b/vlib/v/tests/sumtype_str_for_subtypes_with_str_test.v
@@ -25,7 +25,7 @@ fn (dict Dictionary) str() string {
 
 fn test_str_of_sumtype_works() {
 	o := Object(Dictionary{
-		items: map{
+		items: {
 			'abc': Object(Stream{
 				content: 'xyz'
 			})
diff --git a/vlib/v/tests/tmpl_test.v b/vlib/v/tests/tmpl_test.v
index d3f6d5fcf3..e8cb5a9ea0 100644
--- a/vlib/v/tests/tmpl_test.v
+++ b/vlib/v/tests/tmpl_test.v
@@ -2,7 +2,7 @@ fn one() string {
 	name := 'Peter'
 	age := 25
 	numbers := [1, 2, 3]
-	downloads := map{
+	downloads := {
 		'vlang/ui':  '3201'
 		'vlang/vtl': '123'
 	}
@@ -48,7 +48,7 @@ fn test_tmpl_in_anon_fn() {
 		return $tmpl('tmpl/base.txt')
 	}
 
-	assert anon('Peter', 25, [1, 2, 3], map{
+	assert anon('Peter', 25, [1, 2, 3], {
 		'vlang/ui':  '3201'
 		'vlang/vtl': '123'
 	}, true).trim_space() == "name: Peter
diff --git a/vlib/v/tests/valgrind/1.strings_and_arrays.v b/vlib/v/tests/valgrind/1.strings_and_arrays.v
index 47c5a910e1..1802eb2722 100644
--- a/vlib/v/tests/valgrind/1.strings_and_arrays.v
+++ b/vlib/v/tests/valgrind/1.strings_and_arrays.v
@@ -215,7 +215,7 @@ fn return_if_expr() string {
 }
 
 fn loop_map() {
-	m := map{
+	m := {
 		'UK':     'London'
 		'France': 'Paris'
 	}
diff --git a/vlib/v/util/util.v b/vlib/v/util/util.v
index e2f6d80cd7..28610378df 100644
--- a/vlib/v/util/util.v
+++ b/vlib/v/util/util.v
@@ -16,7 +16,7 @@ pub const (
 )
 
 pub const (
-	external_module_dependencies_for_tool = map{
+	external_module_dependencies_for_tool = {
 		'vdoc': ['markdown']
 	}
 )
diff --git a/vlib/vweb/request_test.v b/vlib/vweb/request_test.v
index 0554fc2b4e..5e65e9e4fa 100644
--- a/vlib/vweb/request_test.v
+++ b/vlib/vweb/request_test.v
@@ -71,27 +71,27 @@ fn test_parse_request_line() {
 }
 
 fn test_parse_form() {
-	assert parse_form('foo=bar&bar=baz') == map{
+	assert parse_form('foo=bar&bar=baz') == {
 		'foo': 'bar'
 		'bar': 'baz'
 	}
-	assert parse_form('foo=bar=&bar=baz') == map{
+	assert parse_form('foo=bar=&bar=baz') == {
 		'foo': 'bar='
 		'bar': 'baz'
 	}
-	assert parse_form('foo=bar%3D&bar=baz') == map{
+	assert parse_form('foo=bar%3D&bar=baz') == {
 		'foo': 'bar='
 		'bar': 'baz'
 	}
-	assert parse_form('foo=b%26ar&bar=baz') == map{
+	assert parse_form('foo=b%26ar&bar=baz') == {
 		'foo': 'b&ar'
 		'bar': 'baz'
 	}
-	assert parse_form('a=b& c=d') == map{
+	assert parse_form('a=b& c=d') == {
 		'a':  'b'
 		' c': 'd'
 	}
-	assert parse_form('a=b&c= d ') == map{
+	assert parse_form('a=b&c= d ') == {
 		'a': 'b'
 		'c': ' d '
 	}
@@ -115,7 +115,7 @@ ${contents[1]}
 --------------------------$boundary--
 "
 	form, files := parse_multipart_form(data, boundary)
-	assert files == map{
+	assert files == {
 		names[0]: [FileData{
 			filename: file
 			content_type: ct
@@ -123,7 +123,7 @@ ${contents[1]}
 		}]
 	}
 
-	assert form == map{
+	assert form == {
 		names[1]: contents[1]
 	}
 }
diff --git a/vlib/vweb/tests/vweb_test.v b/vlib/vweb/tests/vweb_test.v
index f858e15d86..b9e2283985 100644
--- a/vlib/vweb/tests/vweb_test.v
+++ b/vlib/vweb/tests/vweb_test.v
@@ -240,7 +240,7 @@ fn testsuite_end() {
 	// It sends a request to the server to shutdown.
 	x := http.fetch('http://127.0.0.1:$sport/shutdown',
 		method: .get
-		cookies: map{
+		cookies: {
 			'skey': 'superman'
 		}
 	) or {
diff --git a/vlib/vweb/vweb.v b/vlib/vweb/vweb.v
index 389689ebd0..dc6f4f6a39 100644
--- a/vlib/vweb/vweb.v
+++ b/vlib/vweb/vweb.v
@@ -12,7 +12,7 @@ import time
 
 pub const (
 	methods_with_form = [http.Method.post, .put, .patch]
-	headers_close     = http.new_custom_header_from_map(map{
+	headers_close     = http.new_custom_header_from_map({
 		'Server':          'VWeb'
 		http.CommonHeader.connection.str(): 'close'
 	}) or { panic('should never fail') }
@@ -41,7 +41,7 @@ pub const (
 			value: 'text/plain'
 		).join(headers_close)
 	)
-	mime_types        = map{
+	mime_types        = {
 		'.css':  'text/css; charset=utf-8'
 		'.gif':  'image/gif'
 		'.htm':  'text/html; charset=utf-8'
@@ -128,7 +128,7 @@ pub fn (mut ctx Context) send_response_to_client(mimetype string, res string) bo
 	ctx.done = true
 
 	// build header
-	header := http.new_header_from_map(map{
+	header := http.new_header_from_map({
 		http.CommonHeader.content_type:   mimetype
 		http.CommonHeader.content_length: res.len.str()
 	}).join(ctx.header)
diff --git a/vlib/x/json2/any_test.v b/vlib/x/json2/any_test.v
index 6f8690055d..45349a8aec 100644
--- a/vlib/x/json2/any_test.v
+++ b/vlib/x/json2/any_test.v
@@ -1,7 +1,7 @@
 import x.json2
 
 const (
-	sample_data = map{
+	sample_data = {
 		'int':  json2.Any(int(1))
 		'i64':  json2.Any(i64(128))
 		'f32':  json2.Any(f32(2.0))
@@ -10,7 +10,7 @@ const (
 		'str':  json2.Any('test')
 		'null': json2.Any(json2.null)
 		'arr':  json2.Any([json2.Any('lol')])
-		'obj':  json2.Any(map{
+		'obj':  json2.Any({
 			'foo': json2.Any(10)
 		})
 	}
diff --git a/vlib/x/json2/json2.v b/vlib/x/json2/json2.v
index 0e5012c016..602aa4ef4b 100644
--- a/vlib/x/json2/json2.v
+++ b/vlib/x/json2/json2.v
@@ -48,7 +48,7 @@ pub fn (f Any) as_map() map[string]Any {
 		}
 		return mp
 	}
-	return map{
+	return {
 		'0': f
 	}
 }
diff --git a/vlib/x/json2/json2_test.v b/vlib/x/json2/json2_test.v
index b808f421ca..3fc29f7b41 100644
--- a/vlib/x/json2/json2_test.v
+++ b/vlib/x/json2/json2_test.v
@@ -153,7 +153,7 @@ fn (mut u User) from_json(an json2.Any) {
 
 fn (u User) to_json() string {
 	// TODO: derive from field
-	mut mp := map{
+	mut mp := {
 		'age': json2.Any(u.age)
 	}
 	mp['nums'] = u.nums.map(json2.Any(it))
@@ -252,7 +252,7 @@ fn test_struct_in_struct() {
 */
 fn test_encode_map() {
 	expected := '{"one":1,"two":2,"three":3,"four":4}'
-	numbers := map{
+	numbers := {
 		'one':   json2.Any(1)
 		'two':   json2.Any(2)
 		'three': json2.Any(3)
diff --git a/vlib/x/json2/scanner.v b/vlib/x/json2/scanner.v
index 473a83b18f..795625857a 100644
--- a/vlib/x/json2/scanner.v
+++ b/vlib/x/json2/scanner.v
@@ -50,7 +50,7 @@ const (
 	// list of valid unicode escapes aside from \u{4-hex digits}
 	valid_unicode_escapes     = [`b`, `f`, `n`, `r`, `t`, `\\`, `"`, `/`]
 	// used for transforming escapes into valid unicode (eg. n => \n)
-	unicode_transform_escapes = map{
+	unicode_transform_escapes = {
 		98:  `\b`
 		102: `\f`
 		110: `\n`