functional

package module

v0.1.0 Latest Latest Go to latest Published: Oct 13, 2025 License: MIT Imports: 2 Imported by: 0

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func All[T any](in []T, fn func(T) bool) bool

func Contain[In comparable](in []In, v In) bool

func ContainWithFn[In any](in []In, fn func(In) bool) bool

func Filter[T any](in []T, fn func(T) bool) []T

func First[In any](in []In, fn func(In) bool) *In

func Flat[T any](in [][]T) []T

func Map[In any, Out any](in []In, fn func(In) Out) []Out

func MapWithError[In any, Out any](in []In, fn func(In) (Out, error)) ([]Out, error)

func Reduce[In any, Out any](in []In, fn func(accumulator *Out, v In) Out, init Out) Out

func Some[T any](in []T, fn func(T) bool) bool

func Sum[T constraints.Integer | constraints.Float](acc T, v any) T

example for reduce

func ToLookupTable[KeyType comparable, ElemType any](in []ElemType, keyFn func(ElemType) KeyType) map[KeyType]ElemType

type Collection[T any] struct {
	// contains filtered or unexported fields
}

func From[From, To any](from []From) Collection[To]

func (col Collection[T]) Filter(fn func(any) bool) Collection[T]

func (c Collection[T]) First() (*T, error)

func (c Collection[T]) ForEach(fn func(item T) error) error

func (c Collection[T]) Last() (*T, error)

func (col Collection[T]) Map(fn func(any) any) Collection[T]

func (col Collection[T]) MapWithError(fn func(any) (any, error)) Collection[T]

func (c Collection[T]) Pick(rand int) (*T, error)

func (c Collection[T]) Reduce(fn func(accumulator T, current any) T, initialValue T) (T, error)

func (c Collection[T]) ToSlice() ([]T, error)

aggregator