all: update`import ()` and `[]array`

cmd/tools/bench/wyhash.v

@@ -10,11 +10,11 @@ fn main() {
 	min_str_len := 20
 	max_str_len := 40
 	println('Generating $sample_size strings between $min_str_len - $max_str_len chars long...')
-	mut bytepile := []byte
+	mut bytepile := []byte{}
 	for _ in 0 .. sample_size * max_str_len {
 		bytepile << byte(40 + rand.next(125 - 40))
 	}
-	mut str_lens := []int
+	mut str_lens := []int{}
 	for _ in 0 .. sample_size {
 		str_lens << min_str_len + rand.next(max_str_len - min_str_len)
 	}

cmd/tools/modules/testing/common.v

@@ -34,7 +34,7 @@ pub fn (mh mut TestMessageHandler) append_message(msg string) {
 }
 
 pub fn new_test_session(_vargs string) TestSession {
-	mut skip_files := []string
+	mut skip_files := []string{}
 	skip_files << '_non_existing_'
 	$if solaris {
 		skip_files << "examples/gg/gg2.v"
@@ -59,7 +59,7 @@ pub fn (ts mut TestSession) init() {
 
 pub fn (ts mut TestSession) test() {
 	ts.init()
-	mut remaining_files := []string
+	mut remaining_files := []string{}
 	for dot_relative_file in ts.files {
 		relative_file := dot_relative_file.replace('./', '')
 		file := os.real_path(relative_file)
@@ -225,7 +225,7 @@ pub fn v_build_failing(zargs string, folder string) bool {
 	eprintln('v compiler args: "$vargs"')
 	mut session := new_test_session(vargs)
 	files := os.walk_ext(os.join_path(parent_dir, folder), '.v')
-	mut mains := []string
+	mut mains := []string{}
 	for f in files {
 		if !f.contains('modules') && !f.contains('preludes') {
 			$if windows {

cmd/tools/performance_compare.v

@@ -51,7 +51,7 @@ fn (c Context) compare_versions() {
 
 	// The first is the baseline, against which all the others will be compared.
 	// It is the fastest, since hello_world.v has only a single println in it,
-	mut perf_files := []string
+	mut perf_files := []string{}
 	perf_files << c.compare_v_performance('source_hello', [
 		'vprod @DEBUG@ -o source.c examples/hello_world.v',
 		'vprod         -o source.c examples/hello_world.v',
@@ -147,7 +147,7 @@ fn (c Context) compare_v_performance(label string, commands []string) string {
 	timestamp_b,_ := vgit.line_to_timestamp_and_commit(scripting.run('cd $c.b/ ; git rev-list -n1 --timestamp HEAD'))
 	debug_option_a := if timestamp_a > 1570877641 { '-g     ' } else { '-debug ' }
 	debug_option_b := if timestamp_b > 1570877641 { '-g     ' } else { '-debug ' }
-	mut hyperfine_commands_arguments := []string
+	mut hyperfine_commands_arguments := []string{}
 	for cmd in commands {
 		println(cmd)
 	}

cmd/tools/vbin2v.v

@@ -20,7 +20,7 @@ fn (context Context) header() {
 	println('module ${context.module_name}')
 	println('')
 	allfiles := context.files.join(' ')
-	mut options := []string
+	mut options := []string{}
 	if context.prefix.len > 0 {
 		options << '-p ${context.prefix}'
 	}

cmd/tools/vfmt.v

@@ -74,7 +74,7 @@ fn main() {
 		eprintln('vfmt env_vflags_and_os_args: ' + args.str())
 		eprintln('vfmt possible_files: ' + possible_files.str())
 	}
-	mut files := []string
+	mut files := []string{}
 	for file in possible_files {
 		if !file.ends_with('.v') && !file.ends_with('.vv') {
 			verror('v fmt can only be used on .v files.\nOffending file: "$file"')
@@ -90,7 +90,7 @@ fn main() {
 		vhelp.show_topic('fmt')
 		exit(0)
 	}
-	mut cli_args_no_files := []string
+	mut cli_args_no_files := []string{}
 	for a in os.args {
 		if a !in files {
 			cli_args_no_files << a
@@ -287,7 +287,7 @@ fn get_compile_name_of_potential_v_project(file string) string {
 	all_files_in_pfolder := os.ls(pfolder) or {
 		panic(err)
 	}
-	mut vfiles := []string
+	mut vfiles := []string{}
 	for f in all_files_in_pfolder {
 		vf := os.join_path(pfolder, f)
 		if f.starts_with('.') || !f.ends_with('.v') || os.is_dir(vf) {

cmd/tools/vnames.v

@@ -70,7 +70,7 @@ fn main(){
 		exit(0)
 	}
 
-	mut files := []string
+	mut files := []string{}
 	locations := fp.finalize() or { eprintln('Error: ' + err) exit(1) }
 	for xloc in locations {
 		loc := os.real_path(xloc)

cmd/tools/vpm.v

@@ -275,7 +275,7 @@ fn vpm_help() {
 }
 
 fn vcs_used_in_dir(dir string) ?[]string {
-	mut vcs := []string
+	mut vcs := []string{}
 	for repo_subfolder in supported_vcs_folders {
 		checked_folder := os.real_path(os.join_path(dir,repo_subfolder))
 		if os.is_dir(checked_folder) {
@@ -292,7 +292,7 @@ fn get_installed_modules() []string {
 	dirs := os.ls(settings.vmodules_path) or {
 		return []
 	}
-	mut modules := []string
+	mut modules := []string{}
 	for dir in dirs {
 		adir := os.join_path(settings.vmodules_path,dir)
 		if dir in excluded_dirs || !os.is_dir(adir) {
@@ -323,7 +323,7 @@ fn get_all_modules() []string {
 	}
 	s := r.text
 	mut read_len := 0
-	mut modules := []string
+	mut modules := []string{}
 	for read_len < s.len {
 		mut start_token := '<a href="/mod'
 		end_token := '</a>'
@@ -359,7 +359,7 @@ fn resolve_dependencies(name, module_path string, module_names []string) {
 		return
 	}
 	vmod := parse_vmod(data)
-	mut deps := []string
+	mut deps := []string{}
 	// filter out dependencies that were already specified by the user
 	for d in vmod.deps {
 		if d !in module_names {
@@ -440,7 +440,7 @@ fn verbose_println(s string) {
 }
 
 fn get_module_meta_info(name string) ?Mod {
-	mut errors := []string
+	mut errors := []string{}
 	for server_url in default_vpm_server_urls {
 		modurl := server_url + '/jsmod/$name'
 		verbose_println('Retrieving module metadata from: $modurl ...')

cmd/tools/vtest-fmt.v

@@ -54,7 +54,7 @@ fn v_test_formatting(vargs string) {
 }
 
 fn v_files() []string {
-	mut files_that_can_be_formatted := []string
+	mut files_that_can_be_formatted := []string{}
 	all_test_files := os.walk_ext('.', '.v')
 	for tfile in all_test_files {
 		if tfile in known_failing_exceptions {

examples/cli.v

@@ -1,9 +1,7 @@
 module main
 
-import (
-	cli
-	os
-)
+import cli
+import os
 
 fn main() {
 	mut cmd := cli.Command{

examples/eventbus/eventbus.v

@@ -1,8 +1,6 @@
 module main
 
-import (
-	some_module
-)
+import some_module
 
 fn main(){
 	mut sub := some_module.get_subscriber()

examples/eventbus/modules/some_module/some_module.v

@@ -1,8 +1,6 @@
 module some_module
 
-import (
-	eventbus
-)
+import eventbus
 
 const (
 	eb = eventbus.new()

examples/mini_calculator.v

@@ -12,8 +12,8 @@ fn expr_to_rev_pol(expr string) ?[]string {
 	if expr == '' {
 		return error('err: empty expression')
 	}
-	mut stack := []string
-	mut rev_pol := []string
+	mut stack := []string{}
+	mut rev_pol := []string{}
 	mut pos := 0
 	for pos<expr.len {
 		mut end_pos := pos

examples/quick_sort.v

@@ -9,7 +9,7 @@ const (
 fn main() {
 	rand.seed(time.now().unix)
 	rand.next(MAX) // skip the first
-	mut arr := []int
+	mut arr := []int{}
 	for _ in 0..LEN {
 		arr << rand.next(MAX)
 	}

examples/vweb/vweb_assets/main.v

@@ -1,10 +1,8 @@
 module main
 
-import (
-	vweb
-	vweb.assets
-	time
-)
+import vweb
+import vweb.assets
+import time
 
 const (
 	port = 8081

examples/word_counter/word_counter.v

@@ -33,7 +33,7 @@ fn main() {
 
 // Creates an array of words from a given string
 fn extract_words(contents string) []string {
-	mut splitted := []string
+	mut splitted := []string{}
 	for space_splitted in contents.to_lower().split(' ') {
 		if space_splitted.contains('\n') {
 			splitted << space_splitted.split('\n')
@@ -43,7 +43,7 @@ fn extract_words(contents string) []string {
 		}
 	}
 
-	mut results := []string
+	mut results := []string{}
 	for s in splitted {
 		result := filter_word(s)
 		if result == '' {

tutorials/code/blog/blog.v

@@ -1,11 +1,9 @@
 module main
 
-import (
-	vweb
-	time
-	pg
-	json
-)
+import vweb
+import time
+import pg
+import json
 
 pub struct App {
 mut:
@@ -74,4 +72,3 @@ pub fn (app mut App) articles() {
 fn (app mut App) time() {
 	app.vweb.text(time.now().format())
 }
-

vlib/builtin/array_test.v

@@ -145,7 +145,7 @@ fn test_insert() {
 // assert a[4] == 5
 // assert a[3] == 2
 // assert a.len == 5
-// mut b := []f64
+// mut b := []f64{}
 // assert b.len == 0
 // b.insert(0, f64(1.1))
 // assert b.len == 1
@@ -155,12 +155,12 @@ fn test_insert() {
 // It depends on array.insert
 // -----------------------------
 // fn test_prepend() {
-// mut a := []int
+// mut a := []int{}
 // assert a.len == 0
 // a.prepend(1)
 // assert a.len == 1
 // assert a[0] == 1
-// mut b := []f64
+// mut b := []f64{}
 // assert b.len == 0
 // b.prepend(f64(1.1))
 // assert b.len == 1

vlib/cli/help.v

@@ -1,9 +1,7 @@
 module cli
 
-import (
-	term
-	strings
-)
+import term
+import strings
 
 const (
 	BASE_INDENT = 2

vlib/clipboard/clipboard_linux.c.v

@@ -2,11 +2,9 @@
 // but since Wayland isn't extremely adopted, we are covering almost all Linux distros.
 module clipboard
 
-import (
-	time
-	sync
-	math
-)
+import time
+import sync
+import math
 
 #flag -lX11
 #include <X11/Xlib.h>

vlib/crypto/aes/aes.v

@@ -7,9 +7,7 @@
 
 module aes
 
-import (
-	crypto.internal.subtle
-)
+import crypto.internal.subtle
 
 pub const (
 	// The AES block size in bytes.

vlib/crypto/aes/aes_cbc.v

@@ -13,10 +13,8 @@
 
 module aes
 
-import (
-	crypto.cipher
-	crypto.internal.subtle
-)
+import crypto.cipher
+import crypto.internal.subtle
 
 struct AesCbc {
 mut:

vlib/crypto/aes/block_generic.v

@@ -37,9 +37,7 @@
 
 module aes
 
-import (
-	encoding.binary
-)
+import encoding.binary
 
 // Encrypt one block from src into dst, using the expanded key xk.
 fn encrypt_block_generic(xk []u32, dst, src []byte) {

vlib/crypto/aes/cypher_generic.v

@@ -4,11 +4,6 @@
 
 module aes
 
-import (
-	// crypto.cipher
-	// crypto.internal.subtle
-)
-
 // new_cipher_generic creates and returns a new cipher.Block
 // this is the generiv v version, no arch optimisations
 fn new_cipher_generic(key []byte) AesCipher {

vlib/crypto/md5/md5block_generic.v

@@ -8,10 +8,8 @@
 
 module md5
 
-import (
-	math.bits
-	encoding.binary
-)
+import math.bits
+import encoding.binary
 
 fn block_generic(dig mut Digest, p []byte) {
 	// load state

vlib/crypto/sha512/sha512.v

@@ -7,10 +7,8 @@
 // Last commit: https://github.com/golang/go/commit/3ce865d7a0b88714cc433454ae2370a105210c01
 module sha512
 
-import (
-	crypto
-	encoding.binary
-)
+import crypto
+import encoding.binary
 
 pub const (
 // size is the size, in bytes, of a SHA-512 checksum.
@@ -322,4 +320,3 @@ pub fn hexhash_512_224(s string) string {
 pub fn hexhash_512_256(s string) string {
 	return sum512_256(s.bytes()).hex()
 }
-

vlib/encoding/csv/reader.v

@@ -46,7 +46,7 @@ pub fn (r mut Reader) read() ?[]string {
 
 // Once we have multi dimensional array
 // pub fn (r mut Reader) read_all() ?[][]string {
-// 	mut records := []string
+// 	mut records := []string{}
 // 	for {
 // 		record := r.read_record() or {
 // 			if error(err).error == err_eof.error {
@@ -110,7 +110,7 @@ fn (r mut Reader) read_record() ?[]string {
 		}
 		break
 	}
-	mut fields := []string
+	mut fields := []string{}
 	mut i := -1
 	for {
 		// not quoted

vlib/eventbus/eventbus_test.v

@@ -1,6 +1,4 @@
-import (
-	eventbus
-)
+import eventbus
 
 struct EventData {
 	data	string

vlib/flag/flag.v

@@ -63,7 +63,7 @@ pub fn (f Flag) str() string {
 	+'            desc: $f.val_desc'
 }
 pub fn (af []Flag) str() string {
-	mut res := []string
+	mut res := []string{}
 	res << '\n  []Flag = ['
 	for f in af {
 		res << f.str()
@@ -140,8 +140,8 @@ fn (fs mut FlagParser) add_flag(name string, abbr byte, usage string, desc strin
 //  - found arguments and corresponding values are removed from args list
 fn (fs mut FlagParser) parse_value(longhand string, shorthand byte) []string {
 	full := '--$longhand'
-	mut found_entries := []string
-	mut to_delete := []int
+	mut found_entries := []string{}
+	mut to_delete := []int{}
 	mut should_skip_one := false
 	for i, arg in fs.args {
 		if should_skip_one {
@@ -257,7 +257,7 @@ pub fn (fs mut FlagParser) bool(name string, abbr byte, bdefault bool, usage str
 pub fn (fs mut FlagParser) int_multi(name string, abbr byte, usage string) []int {
 	fs.add_flag(name, abbr, usage, '<multiple ints>')
 	parsed := fs.parse_value(name, abbr)
-	mut value := []int
+	mut value := []int{}
 	for val in parsed {
 		value << val.int()
 	}
@@ -294,7 +294,7 @@ pub fn (fs mut FlagParser) int(name string, abbr byte, idefault int, usage strin
 pub fn (fs mut FlagParser) float_multi(name string, abbr byte, usage string) []f64 {
 	fs.add_flag(name, abbr, usage, '<multiple floats>')
 	parsed := fs.parse_value(name, abbr)
-	mut value := []f64
+	mut value := []f64{}
 	for val in parsed {
 		value << val.f64()
 	}
@@ -421,7 +421,7 @@ pub fn (fs FlagParser) usage() string {
 			use += 'This application does not expect any arguments\n\n'
 			goto end_of_arguments_handling
 		}
-		mut s:= []string
+		mut s:= []string{}
 		if positive_min_arg { s << 'at least $fs.min_free_args' }
 		if positive_max_arg { s << 'at most $fs.max_free_args' }
 		if positive_min_arg && positive_max_arg && fs.min_free_args == fs.max_free_args {

vlib/gg2/gg.v

@@ -3,16 +3,15 @@
 // that can be found in the LICENSE file.
 module gg2
 
-import (
-	glm
-	gx
-	os
-	sokol
-	sokol.sapp
-	sokol.sgl
-	sokol.gfx
-	sokol.sfons
-)
+import glm
+import gx
+import os
+import sokol
+import sokol.sapp
+import sokol.sgl
+import sokol.gfx
+import sokol.sfons
+
 const (
 	default_font_size = 24
 )

vlib/log/log.v

@@ -1,10 +1,8 @@
 module log
 
-import (
-	os
-	time
-	term
-)
+import os
+import time
+import term
 
 pub enum Level {
 	fatal = 1

vlib/math/factorial/factorial.v

@@ -48,7 +48,7 @@ pub fn log_factorial(n f64) f64 {
 
 fn log_factorial_asymptotic_expansion(n int) f64 {
         m := 6
-        mut term := []f64
+        mut term := []f64{}
         xx := f64((n + 1) * (n + 1))
         mut xj := f64(n + 1)
 

vlib/math/stats/stats.v

@@ -114,7 +114,7 @@ pub fn mode(arr []f64) f64 {
 	if arr.len == 0 {
 		return f64(0)
 	}
-	mut freqs := []int
+	mut freqs := []int{}
 	for v in arr {
 		freqs<<freq(arr,v)
 	}

vlib/math/stats/stats_test.v

@@ -247,7 +247,7 @@ fn test_range() {
 }
 
 fn test_passing_empty() {
-	data := []f64
+	data := []f64{}
 	assert stats.freq(data,0) == 0
 	assert stats.mean(data) == f64(0)
 	assert stats.geometric_mean(data) == f64(0)
@@ -264,4 +264,3 @@ fn test_passing_empty() {
 	assert stats.max(data) == f64(0)
 	assert stats.range(data) == f64(0)
 }
-

vlib/net/ftp/ftp.v

@@ -42,7 +42,7 @@ mut:
 }
 
 fn (dtp DTP) read() []byte {
-	mut data := []byte
+	mut data := []byte{}
 	for {
 		buf, len := dtp.sock.recv(1024)
 		if len == 0 { break }
@@ -247,7 +247,7 @@ pub fn (ftp FTP) dir() ?[]string {
 	}
 	dtp.close()
 
-	mut dir := []string
+	mut dir := []string{}
 	sdir := string(byteptr(list_dir.data))
 	for lfile in sdir.split('\n') {
 		if lfile.len >1 {

vlib/net/http/cookie.v

@@ -3,11 +3,9 @@
 // that can be found in the LICENSE file.
 module http
 
-import (
-	time
-	arrays
-	strings
-)
+import time
+import arrays
+import strings
 
 pub struct Cookie {
 pub mut:

vlib/net/http/cookie_test.v

@@ -1,7 +1,5 @@
-import (
-	net.http
-	time
-)
+import net.http
+import time
 
 struct SetCookieTestCase {
 	cookie &http.Cookie

vlib/net/http/http.v

@@ -128,7 +128,7 @@ pub fn get_text(url string) string {
 }
 
 pub fn url_encode_form_data(data map[string]string) string {
-	mut pieces := []string
+	mut pieces := []string{}
 	for _key, _value in data {
 		key := urllib.query_escape(_key)
 		value := urllib.query_escape(_value)
@@ -151,7 +151,7 @@ fn build_url_from_fetch(_url string, config FetchConfig) ?string {
 	if params.keys().len == 0 {
 		return url.str()
 	}
-	mut pieces := []string
+	mut pieces := []string{}
 	for key in params.keys() {
 		pieces << '${key}=${params[key]}'
 	}
@@ -314,7 +314,7 @@ fn parse_response(resp string) Response {
 
 fn (req &Request) build_request_headers(method, host_name, path string) string {
 	ua := req.user_agent
-	mut uheaders := []string
+	mut uheaders := []string{}
 	if 'Host' !in req.headers {
 		uheaders << 'Host: $host_name\r\n'
 	}
@@ -338,7 +338,7 @@ fn (req &Request) build_request_cookies_header() string {
 	if req.cookies.keys().len < 1 {
 		return ''
 	}
-	mut cookie := []string
+	mut cookie := []string{}
 	for key, val in req.cookies {
 		cookie << '$key: $val'
 	}

vlib/net/urllib/urllib.v

@@ -257,7 +257,7 @@ fn escape(s string, mode EncodingMode) string {
 		return s
 	}
 	buf := [byte(0)].repeat(64)
-	mut t := []byte
+	mut t := []byte{}
 	required := s.len + 2 * hex_count
 	if required <= buf.len {
 		t = buf[..required]
@@ -883,7 +883,7 @@ pub fn (v Values) encode() string {
 		return ''
 	}
 	mut buf := strings.new_builder(200)
-	mut keys := []string
+	mut keys := []string{}
 	for k, _ in v.data {
 		keys << k
 	}
@@ -922,7 +922,7 @@ fn resolve_path(base, ref string) string {
 	if full == '' {
 		return ''
 	}
-	mut dst := []string
+	mut dst := []string{}
 	src := full.split('/')
 	for _, elem in src {
 		match elem {
@@ -1131,4 +1131,3 @@ fn unhex(c byte) byte {
 	}
 	return 0
 }
-

vlib/net/websocket/examples/client.v

@@ -1,13 +1,11 @@
 module main
 
-import (
-	net.websocket
-	eventbus
-	time
-	readline
-	term
-	benchmark
-)
+import net.websocket
+import eventbus
+import time
+import readline
+import term
+import benchmark
 
 const (
 	eb = eventbus.new()

vlib/net/websocket/utils.v

@@ -1,12 +1,10 @@
 module websocket
 
-import (
-	time
-	rand
-	math
-	crypto.sha1
-	encoding.base64
-)
+import time
+import rand
+import math
+import crypto.sha1
+import encoding.base64
 
 fn htonl64(payload_len u64) byteptr {
 	mut ret := malloc(8)
@@ -46,7 +44,7 @@ fn create_key_challenge_response(seckey string) string {
 }
 
 fn get_nonce() string {
-	mut nonce := []byte
+	mut nonce := []byte{}
 	alphanum := "0123456789ABCDEFGHIJKLMNOPQRSTUVXYZabcdefghijklmnopqrstuvwxyz"
 	for i in 0..18 {
 		nonce << alphanum[rand.next(61)]

vlib/net/websocket/ws.v

@@ -1,13 +1,11 @@
 module websocket
 
-import (
-	net
-	net.urllib
-	encoding.base64
-	eventbus
-	sync
-	net.websocket.logger
-)
+import net
+import net.urllib
+import encoding.base64
+import eventbus
+import sync
+import net.websocket.logger
 
 const (
 	l = logger.new("ws")
@@ -542,7 +540,7 @@ pub fn (ws mut Client) read() int {
 			goto free_data
 			return -1
 		}
-		mut payload := []byte
+		mut payload := []byte{}
 		if payload_len > 0 {
 			payload = [`0`].repeat(int(payload_len))
 			C.memcpy(payload.data, &data[header_len], payload_len)

vlib/os/os_windows.c.v

@@ -77,7 +77,7 @@ mut:
 }
 
 fn init_os_args_wide(argc int, argv &byteptr) []string {
-	mut args := []string
+	mut args := []string{}
 	for i in 0..argc {
 		args << string_from_wide(&u16(argv[i]))
 	}
@@ -86,7 +86,7 @@ fn init_os_args_wide(argc int, argv &byteptr) []string {
 
 pub fn ls(path string) ?[]string {
 	mut find_file_data := Win32finddata{}
-	mut dir_files := []string
+	mut dir_files := []string{}
 	// We can also check if the handle is valid. but using is_dir instead
 	// h_find_dir := C.FindFirstFile(path.str, &find_file_data)
 	// if (INVALID_HANDLE_VALUE == h_find_dir) {

vlib/rand/pcg32_test.v

@@ -3,7 +3,7 @@ import rand
 import time
 
 fn show_u32s(a []u32){
-   mut res := []string
+   mut res := []string{}
    for x in a {
 	  res << x.str()
    }

vlib/rand/splitmix64_test.v

@@ -3,7 +3,7 @@ import rand
 import time
 
 fn show_u64s(a []u64){
-   mut res := []string
+   mut res := []string{}
    for x in a {
 	  res << x.str()
    }

vlib/regex/regex.v

@@ -2232,7 +2232,7 @@ pub fn (re mut RE) find(in_txt string) (int,int) {
 // find all the non overlapping occurrences of the match pattern
 pub fn (re mut RE) find_all(in_txt string) []int {
 	mut i := 0
-	mut res := []int
+	mut res := []int{}
 	mut ls := -1
 	for i < in_txt.len {
 		s,e := re.find(in_txt[i..])

vlib/strconv/atof_test.v

@@ -3,10 +3,8 @@
 * String to float Test
 *
 **********************************************************************/
-import (
-	strconv
-	strconv.atofq
-)
+import strconv
+import strconv.atofq
 
 fn test_atof() {
 	//

vlib/v/gen/cgen.v

@@ -2010,7 +2010,7 @@ fn (mut g Gen) struct_init(struct_init ast.StructInit) {
 	} else {
 		g.writeln('($styp){')
 	}
-	// mut fields := []string
+	// mut fields := []string{}
 	mut inited_fields := []string{} // TODO this is done in checker, move to ast node
 	/*
 	if struct_init.fields.len == 0 && struct_init.exprs.len > 0 {

vlib/v/gen/fn.v

@@ -367,7 +367,7 @@ fn (mut g Gen) fn_call(node ast.CallExpr) {
 	}
 	// Generate tmp vars for values that have to be freed.
 	/*
-	mut tmps := []string
+	mut tmps := []string{}
 	for arg in node.args {
 		if arg.typ == table.string_type_idx || is_print {
 			tmp := g.new_tmp_var()

vlib/v/parser/parser_test.v

@@ -1,14 +1,12 @@
 module parser
 
-import (
-	v.ast
-	v.gen
-	v.table
-	v.checker
-	//	v.eval
-	v.pref
-	term
-)
+import v.ast
+import v.gen
+import v.table
+import v.checker
+//import v.eval
+import v.pref
+import term
 
 fn test_eval() {
 	/*

vlib/v/tests/inout/empty_import.out

@@ -1 +0,0 @@
-empty import

vlib/v/tests/inout/empty_import.vv

@@ -1,7 +0,0 @@
-import (
-	// no module
-)
-
-fn main() {
-	println('empty import')
-}

vlib/v/tests/live_test.v

@@ -1,7 +1,5 @@
-import (
-	os
-	time
-)
+import os
+import time
 
 const (
 	vexe                = os.getenv('VEXE')

vlib/v/tests/module_test.v

@@ -1,11 +1,9 @@
-import (
-	os
-	time as t
-	crypto.sha256
-	math
-	log as l
-	crypto.sha512
-)
+import os
+import time as t
+import crypto.sha256
+import math
+import log as l
+import crypto.sha512
 
 struct TestAliasInStruct {
 	time t.Time

vlib/v/tests/prod_test.v

@@ -1,10 +1,7 @@
 // Build and run files in ./prod/ folder, comparing their output to *.expected.txt files.
 // (Similar to REPL tests, but in -prod mode.)
-// import os
-import (
-	v.tests.repl.runner
-	benchmark
-)
+import v.tests.repl.runner
+import benchmark
 
 fn test_all_v_prod_files() {
 	// TODO: Fix running this test on Windows:

vlib/v/tests/repl/runner/runner.v

@@ -130,7 +130,7 @@ $diff
 pub fn new_options() RunnerOptions {
 	vexec := full_path_to_v(5)
 	mut wd := os.getwd()
-	mut files := []string
+	mut files := []string{}
 	if os.args.len > 1 {
 		files = os.args[1..]
 	} else {
@@ -148,7 +148,7 @@ pub fn new_options() RunnerOptions {
 pub fn new_prod_options() RunnerOptions {
 	wd := os.getwd()
 	vexec := full_path_to_v(4)
-	mut files := []string
+	mut files := []string{}
 	if os.args.len > 1 {
 		files = os.args[1..]
 	} else {

vlib/v/tests/typeof_test.v

@@ -8,8 +8,8 @@ fn test_typeof_on_simple_expressions() {
 }
 
 fn test_typeof_on_atypes() {
-	aint := []int
-	astring := []string
+	aint := []int{}
+	astring := []string{}
 	assert typeof(aint) == 'array_int'
 	assert typeof(astring) == 'array_string'
 }

vlib/vweb/assets/assets.v

@@ -3,11 +3,9 @@ module assets
 // this module provides an AssetManager for combining
 // and caching javascript & css.
 
-import (
-	os
-	time
-	crypto.md5
-)
+import os
+import time
+import crypto.md5
 
 const (
 	UnknownAssetTypeError = 'vweb.assets: unknown asset type'

vlib/vweb/assets/assets_test.v

@@ -1,7 +1,5 @@
-import (
-	vweb.assets
-	os
-)
+import vweb.assets
+import os
 
 // clean_cache_dir used before and after tests that write to a cache directory.
 // Because of parallel compilation and therefore test running,

vlib/vweb/vweb.v

@@ -4,13 +4,11 @@
 
 module vweb
 
-import (
-	os
-	net
-	net.http
-	net.urllib
-	strings
-)
+import os
+import net
+import net.http
+import net.urllib
+import strings
 
 pub const (
 	methods_with_form = ['POST', 'PUT', 'PATCH']
@@ -186,7 +184,7 @@ fn handle_conn<T>(conn net.Socket, app mut T) {
 		return
 		//continue
 	}
-	mut headers := []string
+	mut headers := []string{}
 	mut body := ''
 	mut in_headers := true
 	mut len := 0