golang filters on struct arrays using generics

filter_generics.go

// https://go2goplay.golang.org/p/YF6fsuohucV

package main

import (
	"fmt"
	"strings"
)

type Array struct {
	Elements []Element
}

type Element struct {
	Name string
	Age  int
}

func Filter[T any](s []T, cond func(t T) bool) []T {
	res := []T{}
	for _, v := range s {
		if cond(v) {
			res = append(res, v)
		}
	}
	return res
}

func main() {
	a := Array{
		Elements: []Element{
			{Name: "Batman", Age: 39},
			{Name: "Superman", Age: 42},
			{Name: "WonderWoman", Age: 15000},
		},
	}
	b := Filter(a.Elements, func(e Element) bool {
		return strings.Contains(strings.ToLower(e.Name), strings.ToLower("woman"))
	})
	fmt.Println(b)
}