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fp-go/eq/monoid.go

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package eq
import (
M "github.com/ibm/fp-go/monoid"
S "github.com/ibm/fp-go/semigroup"
)
func Semigroup[A any]() S.Semigroup[Eq[A]] {
return S.MakeSemigroup(func(x, y Eq[A]) Eq[A] {
return FromEquals(func(a, b A) bool {
return x.Equals(a, b) && y.Equals(a, b)
})
})
}
func Monoid[A any]() M.Monoid[Eq[A]] {
return M.MakeMonoid(Semigroup[A]().Concat, Empty[A]())
}