使用Golang中的泛型创建“map”函数 - gosamples

package main

import (
    "fmt"
    "math"
    "strconv"
)

func mapSlice[T any, M any](a []T, f func(T) M) []M {
    n := make([]M, len(a))
    for i, e := range a {
        n[i] = f(e)
    }
    return n
}

func main() {
    numbers := []float64{4, 9, 16, 25}

    newNumbers := mapSlice(numbers, math.Sqrt)
    fmt.Println(newNumbers)

    words := []string{"a", "b", "c", "d"}
    quoted := mapSlice(words, func(s string) string {
        return "\"" + s + "\""
    })
    fmt.Println(quoted)

    stringPowNumbers := mapSlice(numbers, func(n float64) string {
        return strconv.FormatFloat(math.Pow(n, 2), 'f', -1, 64)
    })
    fmt.Println(stringPowNumbers)
}
输出：
<p class="indent">[2 3 4 5]
<p class="indent">["a" "b" "c" "d"]
<p class="indent">[16 81 256 625]