go map slice array channel 传参

 1 package main
 2 
 3 import (
 4     "fmt"
 5     //"net/http"
 6 )
 7 
 8 func modifyMap(s map[string]interface{}) {
 9     s["a"]="a"
10 }
11 func modifyArray(a [5]int) {
12     a[2]=100
13 }
14 func modifySlice(b []int) {
15     b[0]=0
16 }
17 func modifyChannels(ch chan int) {
18     ch<-2;
19 }
20 func main() {
21     s := make(map[string]interface{})
22     s["a"]="b"
23     fmt.Println(s);
24     modifyMap(s);
25     fmt.Println(s);
26     a := [5]int{1,2,3,4,5}
27     fmt.Println(a);
28     modifyArray(a)
29     fmt.Println(a);
30     b := []int{1,2,3,4,5}
31     fmt.Println(b);
32     modifySlice(b);
33     fmt.Println(b);
34     ch :=make(chan int,10)
35     fmt.Println(len(ch));
36     modifyChannels(ch)
37     fmt.Println(len(ch));
38 }

test.go

map[a:b]
map[a:a]
[1 2 3 4 5]
[1 2 3 4 5]
[1 2 3 4 5]
[0 2 3 4 5]
0
1

由结果可知除了数组是传值，map、slice、chan都是传引用