深入浅析Go中三个点(...)用法

package main
 
import (
	"fmt"
)
 
func main(){
    name(1,2,3,4,5,6,7,8,9) //多个不确定数量的参数
    
    var strss= []string{
        "qwr",
        "234",
        "yui",
        "cvbc",
    }
    test1(strss...) //切片被打散传入 strss... 等同于 "qwr","234","yui","cvbc"
}
 
func name(args ...int) {//可以接受任意个int参数
    for _, v:= range args{
        fmt.Println(v)
    }
}
 
func test1(args ...string) { //可以接受任意个string参数
    for _, v:= range args{
        fmt.Println(v)
    }
}

package main
 
import (
    "fmt"
    "log"
)
 
func main() {
    //multiParam 可以接受可变数量的参数
 
    names := []string{"jerry", "herry"}
 
    //在数组文字中，...符号指定的长度等于文字中元素的数量。
    stooges := [...]string{"Moe", "Larry", "Curly"}
    stoogxs := []string{"Moe", "Larry", "Curly"}
 
    strParam("jerry", "herry")
    strParam(names...)
 
    //通过append合并两个slice
    stoogxs = append(stoogxs, names...)
    fmt.Println(stoogxs)
 
    //标识数组元素个数，这里，...意味着数组的元素个数
    log.Println(len(stooges))
 
    nums := []int{4, 5, 6}
    stoogns := [...]int{4, 5, 6}
 
    intParam(1, 2, 3)
    intParam(nums...)
 
    //标识数组元素个数，这里，...意味着数组的元素个数
    log.Println(len(stoogns))
}
 
func strParam(args ...string) {
    //接受的参数放在args数组中
    for _, e := range args {
        log.Println(e)
    }
}
 
func intParam(args ...int) {
    res := 0
    for _, n := range args {
        res += n
    }
    log.Println(res)
 
}

func intParam(args ...int) {
    res := 0
    for _, n := range args {
        res += n
    }
    log.Println(res)
}

nums := []int{4, 5, 6}
intParam(nums...)

stooges := [...]string{"Moe", "Larry", "Curly"} // len(stooges) == 3

go test ./...