歆萌 2019-12-08
1、append函数的使用
作用:在原切片的末尾添加元素
示例:
| packagemain //必须有个main包import"fmt"funcmain() {    s1 := []int{}    fmt.Printf("len = %d, cap = %d\n", len(s1), cap(s1))    fmt.Println("s1 = ", s1)    //在原切片的末尾添加元素    s1 = append(s1, 1)    s1 = append(s1, 2)    s1 = append(s1, 3)    fmt.Printf("len = %d, cap = %d\n", len(s1), cap(s1))    fmt.Println("s1 = ", s1)    s2 := []int{1, 2, 3}    fmt.Println("s2 = ", s2)    s2 = append(s2, 5)    s2 = append(s2, 5)    s2 = append(s2, 5)    fmt.Println("s2 = ", s2)} | 
#执行结果:
| 1 2 3 4 5 6 7 | len = 0, cap = 0s1 =  []len = 3, cap = 4s1 =  [1 2 3]s2 =  [1 2 3]s2 =  [1 2 3 5 5 5] |