go map slice array channel 传参

package main

import (
    "fmt"
    //"net/http"
)

func modifyMap(s map[string]interface{}) {
    s["a"]="a"
}
func modifyArray(a [5]int) {
    a[2]=100
}
func modifySlice(b []int) {
    b[0]=0
}
func modifyChannels(ch chan int) {
    ch<-2;
}
func main() {
    s := make(map[string]interface{})
    s["a"]="b"
    fmt.Println(s);
    modifyMap(s);
    fmt.Println(s);
    a := [5]int{1,2,3,4,5}
    fmt.Println(a);
    modifyArray(a)
    fmt.Println(a);
    b := []int{1,2,3,4,5}
    fmt.Println(b);
    modifySlice(b);
    fmt.Println(b);
    ch :=make(chan int,10)
    fmt.Println(len(ch));
    modifyChannels(ch)
    fmt.Println(len(ch));
}

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