package slices

type EqualityComparator[T comparable] = func(a, b T) bool
type FilterFunc[T any] = func(T) bool
type Consumer[T any] = func(T)
type IndexedConsumer[T any] = func(int, T)

type Mapper[I, O any] = func(I) O
type ErrorMapper[I, O any] = func(I) (O, error)

type MapMapper[T any, K comparable, V any] = func(T) (K, V)
type MapUnmapper[K comparable, V, T any] = func(K, V) T

type Reducer[A, T any] = func(acc A, value T) A