Go: sort a Map by key #golang

go-sort-map.go

import "sort" 

ages := map[string]int{
	"a": 1,	
	"c": 3,	
	"d": 4,	
	"b": 2,
}

names := make([]string, 0, len(ages))
for name := range ages {
	names = append(names, name)
}
sort.Strings(names) //sort by key
for _, name := range names {
	//...
}