bring back map.str()

compiler/tests/mut_test.v

@@ -0,0 +1,6 @@
+fn test_mut() {
+	a := 1 
+	mut b := &a
+	*b = 10 
+	println(a) 
+} 

tools/vget.v

@@ -8,7 +8,7 @@ import (
 
 const (
 	//url = 'http://localhost:8089' 
-	url = 'http://vpm.vlang.io' 
+	url = 'https://vpm.best' 
 ) 
 
 struct Mod {
@@ -25,7 +25,10 @@ fn main() {
 	} 
 	name := os.args.last() 
 	s := http.get_text(url + '/jsmod/$name') 
-	mod := json.decode(Mod, s) or { return } 
+	mod := json.decode(Mod, s) or { 
+		println('Error. Make sure you are online.') 
+		return
+	} 
 	home := os.home_dir() 
 	os.exec('git -C "$home/.vmodules" clone --depth=1 $mod.url $mod.name')
 	println(s) 

vlib/builtin/map.v

@@ -4,6 +4,8 @@
 
 module builtin
 
+import strings 
+
 struct map {
 	element_size int
 	root      *Node 
@@ -243,16 +245,19 @@ pub fn (m map) free() {
 }
 
 pub fn (m map_string) str() string {
-	// return 'not impl'
 	if m.size == 0 {
 		return '{}'
 	}
 	// TODO use bytes buffer
+	//mut sb := strings.new_builder(50)
+	//sb.writeln('{') 
 	mut s := '{\n' 
-	//for key, val  in m { 
+	for key, val  in m { 
-		//val := m[entry.key]
+		//sb.writeln('  "$entry.key" => "$val"') 
-		//s += '  "$entry.key" => "$val"\n'
+		s += '  "$key" => "$val"\n' 
-	//}
+	}
-	s += '}'
+	s += '}\n' 
+	//sb.writeln('}') 
+	//return sb.str() 
 	return s 
 }