package main
import (
"fmt"
)
type student struct {
Name string
Age int
}
func main() {
m := pase_map()
for k, v := range m {
fmt.Printf("key = %s,value =%v\n", k, v)
}
}
func pase_map() map[string]*student {
m := make(map[string]*student)
stu := []student{
{"joy", 12}, {"lei", 14}, {"jian", 18},
}
for _, v := range stu {
m[v.Name] = &v
}
return m
}
$ go run test.go
key = joy,value =&{jian 18}
key = lei,value =&{jian 18}
key = jian,value =&{jian 18}
说明 v 一直都是同一个变量。
修正
package main
import (
"fmt"
)
type student struct {
Name string
Age int
}
func main() {
m := pase_map()
for k, v := range m {
fmt.Printf("key = %s,value =%v\n", k, v)
}
}
func pase_map() map[string]*student {
m := make(map[string]*student)
stu := []student{
{"joy", 12}, {"lei", 14}, {"jian", 18},
}
for k, v := range stu {
m[v.Name] = &stu[k]
}
return m
}
$ go run test.go
key = joy,value =&{joy 12}
key = lei,value =&{lei 14}
key = jian,value =&{jian 18}
