go的复合类型

package main

import "fmt"

func main() {
    arr := [10]int{} //数组
    arr[1] = 8
    fmt.Println(arr)

    arr2 := [2][3]string{{"1", "2", "3"}} //二维数组
    arr2[1][0] = "4"
    arr2[1][1] = "5"
    arr2[1][2] = "5"
    fmt.Println(arr2)

    s := []string{"你好", "再见"} //切片(代表内存地址,地址传递)
    s = append(s, "祝福")
    sc := []string{"1"}
    copy(sc, s)
    //copy(s, sc)
    fmt.Println(s)
    fmt.Println(sc)

    s2 := [][]int{{1, 2, 3}, {4, 5, 6}, {7, 8}, {9}} //二维切片
    s2 = append(s2, []int{10})
    fmt.Println(s2)

    m := map[int]string{1: "2"} //字典(无序、代表内存地址，地址传递)
    m[0] = "4"
    delete(m, 1)
    fmt.Println(m)
}

函数调用：

func main() {
    a := 1
    aa(a)
    fmt.Println(a)
    fmt.Println("--------------")

    var arr [2]int = [2]int{1, 2}
    arrFunction(arr)
    fmt.Println(arr)
    fmt.Println("--------------")

    slicp := []int{1, 2, 3}
    slicpFunction(slicp)
    fmt.Println(slicp)
    fmt.Println("--------------")

    m := map[int][]string{}
    m[0] = []string{"1", "2", "3"}
    fmt.Println(m)
    mapFunction(m)
    fmt.Println(m)
    fmt.Println("--------------")
}

func aa(a int) {
    a += 1
    fmt.Println(a)
}

func arrFunction(a [2]int) {
    for key, value := range a {
        a[key] = value + 1
    }
    fmt.Println(a)
}

func slicpFunction(a []int) {
    for key, value := range a {
        a[key] = value + 1
    }
    fmt.Println(a)
}

func mapFunction(a map[int][]string) {
    for i := 0; i < len(a); i++ {
        for key, value := range a[i] {
            a[i][key] = value + "88"
        }
    }
}

结果：

结构体复合类型的特性和基础的类型特性一样。

单独结构体传参只是形参传递，并不是地址传递。