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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 = %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： 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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