iter

type Comparator2[K, V any] func(K, V, K, V) bool

type Consumer2[K, V any] func(K, V)

type Function2[K, V, R any] func(K, V) R

type Predicate2[K, V any] func(K, V) bool

type Seq2[K, V any] iter.Seq2[K, V]

type Stream2[K, V any] interface {
	Seq2() iter.Seq2[K, V]

	Filter(Predicate2[K, V]) Stream2[K, V]
	Peek(Consumer2[K, V]) Stream2[K, V]

	Distinct(Function2[K, V, int]) Stream2[K, V]
	SortedByKeys(Comparator[K]) Stream2[K, V]
	SortedByValues(Comparator[V]) Stream2[K, V]
	Limit(int64) Stream2[K, V]
	Skip(int64) Stream2[K, V]

	ForEach(Consumer2[K, V])
	CollectKeys() []K
	CollectValues() []V
	AllMatch(Predicate2[K, V]) bool
	NoneMatch(Predicate2[K, V]) bool
	AnyMatch(Predicate2[K, V]) bool

	First() (K, V)
	Count() int64
}

type Supplier2[K, V any] func() (K, V)