structure

type Bytes = []byte

type CountMap[K comparable] interface {
	Set(K, int64)
	Add(K, int64)
	Subtract(K, int64)
	Get(K) int64
	GetAll() map[K]int64
	Contain(K) bool
	Remove(K)
	Clear()
}

type MultiMap[K comparable, V any] interface {
	Add(K, ...V)
	Get(K) []V
	Size(K) int
	GetAll() map[K][]V
	Contain(K) bool
	Remove(K)
	Clear()
}

type Set[T comparable] interface {
	Add(...T)
	Contain(...T) bool
	Remove(...T)
	Clear()
	Get() []T
}

type Void = interface{}