package gentools

func CopyMap[K comparable, V any](m map[K]V) map[K]V {
	m2 := make(map[K]V, len(m)+1)
	for k, v := range m {
		m2[k] = v
	}

	return m2
}

func OneItemMap[K comparable, V any](key K, value V) map[K]V {
	m := make(map[K]V, 1)
	m[key] = value
	return m
}

func MapKeys[K comparable, V any](m map[K]V) []K {
	keys := make([]K, 0, len(m))
	for key := range m {
		keys = append(keys, key)
	}

	return keys
}