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Contravariant

Model​

Model​

Contravariant​

Signature​

export interface Contravariant<F> {
  readonly contramap: <A, B>(fa: HKT<F, A>, f: (b: B) => A) => HKT<F, B>
  readonly URI: F
}

Details​

  • Added in 0.1.0

License​

  • MIT – Copyright (c) 2017-present Giulio Canti

Contravariant1​

Signature​

export interface Contravariant1<F extends URIS> {
  readonly contramap: <A, B>(fa: Kind<F, A>, f: (b: B) => A) => Kind<F, B>
  readonly URI: F
}

Details​

  • Added in 0.1.0

License​

  • MIT – Copyright (c) 2017-present Giulio Canti

Contravariant2​

Signature​

export interface Contravariant2<F extends URIS2> {
  readonly contramap: <E, A, B>(fa: Kind2<F, E, A>, f: (b: B) => A) => Kind2<F, E, B>
  readonly URI: F
}

Details​

  • Added in 0.1.0

License​

  • MIT – Copyright (c) 2017-present Giulio Canti

Contravariant2C​

Signature​

export interface Contravariant2C<F extends URIS2, E> {
  readonly _E: E
  readonly contramap: <A, B>(fa: Kind2<F, E, A>, f: (b: B) => A) => Kind2<F, E, B>
  readonly URI: F
}

Details​

  • Added in 0.1.0

License​

  • MIT – Copyright (c) 2017-present Giulio Canti

Contravariant3​

Signature​

export interface Contravariant3<F extends URIS3> {
  readonly contramap: <R, E, A, B>(fa: Kind3<F, R, E, A>, f: (b: B) => A) => Kind3<F, R, E, B>
  readonly URI: F
}

Details​

  • Added in 0.1.0

License​

  • MIT – Copyright (c) 2017-present Giulio Canti

Contravariant3C​

Signature​

export interface Contravariant3C<F extends URIS3, E> {
  readonly _E: E
  readonly contramap: <R, A, B>(fa: Kind3<F, R, E, A>, f: (b: B) => A) => Kind3<F, R, E, B>
  readonly URI: F
}

Details​

  • Added in 0.1.0

License​

  • MIT – Copyright (c) 2017-present Giulio Canti

Contravariant4​

Signature​

export interface Contravariant4<F extends URIS4> {
  readonly contramap: <S, R, E, A, B>(fa: Kind4<F, S, R, E, A>, f: (b: B) => A) => Kind4<F, S, R, E, B>
  readonly URI: F
}

Details​

  • Added in 0.1.0

License​

  • MIT – Copyright (c) 2017-present Giulio Canti