// run // Copyright 2021 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 main type Map[K comparable, V any] struct { m map[K]V } func NewMap[K comparable, V any]() Map[K, V] { return Map[K, V]{m: map[K]V{}} } func (m Map[K, V]) Get(key K) V { return m.m[key] } func main() { _ = NewMap[int, struct{}]() }