go语言基础之append函数的使用
1、append函数的使用
作用：在原切片的末尾添加元素
示例：
package main //必须有个main包 import "fmt" func main() { s1 := []int{} fmt.Printf( "len = %d, cap = %dn" , 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 = %dn" , 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 = 0 s1 = [] len = 3, cap = 4 s1 = [1 2 3] s2 = [1 2 3] s2 = [1 2 3 5 5 5] |
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