semigroup

func AltSemigroup ¶ added in v1.0.31

func AltSemigroup[HKTA any, LAZYHKTA ~func() HKTA](
	falt func(HKTA, LAZYHKTA) HKTA,

) Semigroup[HKTA]

func ApplySemigroup ¶

func ApplySemigroup[A, HKTA, HKTFA any](
	fmap func(HKTA, func(A) func(A) A) HKTFA,
	fap func(HKTFA, HKTA) HKTA,

	s Semigroup[A],
) Semigroup[HKTA]

* HKTA = HKT<A> HKTFA = HKT<func(A)A>

func First ¶

func First[A any]() Semigroup[A]

First always returns the first argument.

func FunctionSemigroup ¶

func FunctionSemigroup[A, B any](s Semigroup[B]) Semigroup[func(A) B]

FunctionSemigroup forms a semigroup as long as you can provide a semigroup for the codomain.

func Last ¶

func Last[A any]() Semigroup[A]

Last always returns the last argument.

func MakeSemigroup ¶

func MakeSemigroup[A any](c func(A, A) A) Semigroup[A]

func Reverse ¶

func Reverse[A any](m Semigroup[A]) Semigroup[A]

Reverse returns The dual of a `Semigroup`, obtained by swapping the arguments of `concat`.