Interface Functor<A>

Functor type class - supports mapping over wrapped values

Laws:

Identity: fa.map(x => x) ≡ fa
Composition: fa.map(f).map(g) ≡ fa.map(x => g(f(x)))

interface Functor<A extends Type> {
map<B extends unknown>(f: (value: A) => B): Functor<B>;
}

Type Parameters

A extends Type

Hierarchy (View Summary)

Functor
- Applicative

Index

Methods

Methods

map

map<B extends unknown>(f: (value: A) => B): Functor<B>
Type Parameters
- B extends unknown
Parameters
- f: (value: A) => B
Returns Functor<B>