// Copyright 2023 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package maps_test import ( "fmt" "maps" "strings" ) func ExampleDeleteFunc() { m := map[string]int{ "one": 1, "two": 2, "three": 3, "four": 4, } maps.DeleteFunc(m, func(k string, v int) bool { return v%2 != 0 // delete odd values }) fmt.Println(m) // Output: // map[four:4 two:2] } func ExampleEqualFunc() { m1 := map[int]string{ 1: "one", 10: "Ten", 1000: "THOUSAND", } m2 := map[int][]byte{ 1: []byte("One"), 10: []byte("Ten"), 1000: []byte("Thousand"), } eq := maps.EqualFunc(m1, m2, func(v1 string, v2 []byte) bool { return strings.ToLower(v1) == strings.ToLower(string(v2)) }) fmt.Println(eq) // Output: // true }