slice

package main

import "fmt"

func main() {

    //创建一个空的slices

    s := make([]string, 3)

    fmt.Println("emp", s)

    //slice赋值

    s[0] = "a"

    s[1] = "b"

    s[2] = "c"

    fmt.Println("set:", s)

    fmt.Println("get:", s[2])

    //slice长度

    fmt.Println("len", len(s))

    //slice append添加数值

    s = append(s, "d")

    s = append(s, "e", "f")

    fmt.Println("apd:", s)

    //切片复制 s复制到c

    c := make([]string, len(s))

    copy(c, s)

    fmt.Println("cpy", c)

    //获取切片的部分元素

    l := s[2:5]

    fmt.Println("sl1:", l)

    //切分到s[:5]

    l = s[:5]

    fmt.Println("sl2", l)

    //从s[2:]切分

    l = s[2:]

    fmt.Println("sl3", l)

    //切片t赋值

    t := []string{"g", "h", "i"}

    fmt.Println("dcl", t)

    //二维切片

    twoD := make([][]int, 3)

    for i := 0; i <</span> 3; i++ {

        innerLen := i + 1

        twoD[i] = make([]int, innerLen)

        for j := 0; j <</span> innerLen; j++ {

            twoD[i][j] = i + j

        }

    }

    fmt.Println("2d:", twoD)

}