在Golang中使用泛型实现slice过滤filter()函数 - gosamples

func filter(slice []string, f func(string) bool) []string {
    var n []string
    for _, e := range slice {
        if f(e) {
            n = append(n, e)
        }
    }
    return n
}

package main

import (
    "fmt"
    "strings"
)

func filter[T any](slice []T, f func(T) bool) []T {
    var n []T
    for _, e := range slice {
        if f(e) {
            n = append(n, e)
        }
    }
    return n
}

func main() {
    websites := []string{"http://foo.com", "https://bar.com", "https://gosamples.dev"}
    httpsWebsites := filter(websites, func(v string) bool {
        return strings.HasPrefix(v, "https://")
    })
    fmt.Println(httpsWebsites)

    numbers := []int{1, 2, 3, 4, 5, 6}
    divisibleBy2 := filter(numbers, func(v int) bool {
        return v % 2 == 0
    })
    fmt.Println(divisibleBy2)
}
输出：
<p class="indent">[https://bar.com https://gosamples.dev]
<p class="indent">[2 4 6]