问检查每个片Go中包含的值号

EN

package main

import (
    "fmt"

    "golang.org/x/exp/slices"
)

func main() {
    arr := []int{1, 2, 3, 4, 5}
    fmt.Println(slices.Contains(arr, 3))
    fmt.Println(slices.Contains(arr, 6))
}

package main

import (
    "fmt"
)

func main() {
    arr := map[int]struct{}{
        1: {},
        2: {},
        3: {},
        4: {},
        5: {},
    }
    _, contains3 := arr[3]
    fmt.Println(contains3)
    _, contains6 := arr[6]
    fmt.Println(contains6)
}