1 package main
2
3 import "fmt"
4
5 type student struct{
6 name string
7 grade int8
8 }
9
10 func filter(stu []student, f func(s student) bool) []student{
11 var r []student
12
13 for _, s := range stu {
14 if f(s) == true {
15 r = append(r, s)
16 }
17 }
18
19 return r
20 }
21
22 func main() {
23 s1 := student{
24 "zhangsan",
25 90,
26 }
27
28 s2 := student{
29 "lisi",
30 80,
31 }
32
33 s3 := student{
34 "wanggang",
35 70,
36 }
37
38 s := []student{s1, s2, s3}
39
40 fmt.Println("all student: ", s)
41
42 var result []student
43
44 result = filter(s, func(s student) bool {
45 if s.grade < 90 {
46 return true
47 }
48 return false
49 })
50
51 fmt.Println("less than 90: ", result)
52 }
运行结果：
all student: [{zhangsan 90} {lisi 80} {wanggang 70}]
less than 90: [{lisi 80} {wanggang 70}]