Overview

Compactable represents data structures which can be compacted/filtered. This is a generalization of catOptions as a new function compact. compact has relations with Functor, Applicative, Monad, Alternative, and Traversable in that we can use these classes to provide the ability to operate on a data type by eliminating intermediate Nones. This is useful for representing the filtering out of values, or failure.

Adapted from https://github.com/LiamGoodacre/purescript-filterable/blob/master/src/Data/Compactable.purs


Table of contents


Compactable (interface)

Signature

export interface Compactable<F> {
  readonly URI: F
  /**
   * Compacts a data structure unwrapping inner Option
   */
  readonly compact: <A>(fa: HKT<F, Option<A>>) => HKT<F, A>
  /**
   * Separates a data structure moving inner Left to the left side and inner Right to the right side of Separated
   */
  readonly separate: <A, B>(fa: HKT<F, Either<A, B>>) => Separated<HKT<F, A>, HKT<F, B>>
}

Added in v2.0.0

Compactable1 (interface)

Signature

export interface Compactable1<F extends URIS> {
  readonly URI: F
  readonly compact: <A>(fa: Kind<F, Option<A>>) => Kind<F, A>
  readonly separate: <A, B>(fa: Kind<F, Either<A, B>>) => Separated<Kind<F, A>, Kind<F, B>>
}

Added in v2.0.0

Compactable2 (interface)

Signature

export interface Compactable2<F extends URIS2> {
  readonly URI: F
  readonly compact: <E, A>(fa: Kind2<F, E, Option<A>>) => Kind2<F, E, A>
  readonly separate: <E, A, B>(fa: Kind2<F, E, Either<A, B>>) => Separated<Kind2<F, E, A>, Kind2<F, E, B>>
}

Added in v2.0.0

Compactable2C (interface)

Signature

export interface Compactable2C<F extends URIS2, E> {
  readonly URI: F
  readonly _E: E
  readonly compact: <A>(fa: Kind2<F, E, Option<A>>) => Kind2<F, E, A>
  readonly separate: <A, B>(fa: Kind2<F, E, Either<A, B>>) => Separated<Kind2<F, E, A>, Kind2<F, E, B>>
}

Added in v2.0.0

Compactable3 (interface)

Signature

export interface Compactable3<F extends URIS3> {
  readonly URI: F
  readonly compact: <R, E, A>(fa: Kind3<F, R, E, Option<A>>) => Kind3<F, R, E, A>
  readonly separate: <R, E, A, B>(fa: Kind3<F, R, E, Either<A, B>>) => Separated<Kind3<F, R, E, A>, Kind3<F, R, E, B>>
}

Added in v2.0.0

Compactable3C (interface)

Signature

export interface Compactable3C<F extends URIS3, E> {
  readonly URI: F
  readonly compact: <R, A>(fa: Kind3<F, R, E, Option<A>>) => Kind3<F, R, E, A>
  readonly separate: <R, A, B>(fa: Kind3<F, R, E, Either<A, B>>) => Separated<Kind3<F, R, E, A>, Kind3<F, R, E, B>>
}

Added in v2.2.0

Compactable4 (interface)

Signature

export interface Compactable4<F extends URIS4> {
  readonly URI: F
  readonly compact: <S, R, E, A>(fa: Kind4<F, S, R, E, Option<A>>) => Kind4<F, S, R, E, A>
  readonly separate: <S, R, E, A, B>(
    fa: Kind4<F, S, R, E, Either<A, B>>
  ) => Separated<Kind4<F, S, R, E, A>, Kind4<F, S, R, E, B>>
}

Added in v2.0.0

CompactableComposition (interface)

Signature

export interface CompactableComposition<F, G> extends FunctorComposition<F, G> {
  readonly compact: <A>(fga: HKT<F, HKT<G, Option<A>>>) => HKT<F, HKT<G, A>>
  readonly separate: <A, B>(fge: HKT<F, HKT<G, Either<A, B>>>) => Separated<HKT<F, HKT<G, A>>, HKT<F, HKT<G, B>>>
}

Added in v2.0.0

CompactableComposition11 (interface)

Signature

export interface CompactableComposition11<F extends URIS, G extends URIS> extends FunctorComposition11<F, G> {
  readonly compact: <A>(fga: Kind<F, Kind<G, Option<A>>>) => Kind<F, Kind<G, A>>
  readonly separate: <A, B>(fge: Kind<F, Kind<G, Either<A, B>>>) => Separated<Kind<F, Kind<G, A>>, Kind<F, Kind<G, B>>>
}

Added in v2.0.0

CompactableComposition12 (interface)

Signature

export interface CompactableComposition12<F extends URIS, G extends URIS2> extends FunctorComposition12<F, G> {
  readonly compact: <E, A>(fga: Kind<F, Kind2<G, E, Option<A>>>) => Kind<F, Kind2<G, E, A>>
  readonly separate: <E, A, B>(
    fge: Kind<F, Kind2<G, E, Either<A, B>>>
  ) => Separated<Kind<F, Kind2<G, E, A>>, Kind<F, Kind2<G, E, B>>>
}

Added in v2.0.0

CompactableComposition12C (interface)

Signature

export interface CompactableComposition12C<F extends URIS, G extends URIS2, E> extends FunctorComposition12C<F, G, E> {
  readonly compact: <A>(fga: Kind<F, Kind2<G, E, Option<A>>>) => Kind<F, Kind2<G, E, A>>
  readonly separate: <A, B>(
    fge: Kind<F, Kind2<G, E, Either<A, B>>>
  ) => Separated<Kind<F, Kind2<G, E, A>>, Kind<F, Kind2<G, E, B>>>
}

Added in v2.0.0

CompactableComposition21 (interface)

Signature

export interface CompactableComposition21<F extends URIS2, G extends URIS> extends FunctorComposition21<F, G> {
  readonly compact: <FE, A>(fga: Kind2<F, FE, Kind<G, Option<A>>>) => Kind2<F, FE, Kind<G, A>>
  readonly separate: <FE, A, B>(
    fge: Kind2<F, FE, Kind<G, Either<A, B>>>
  ) => Separated<Kind2<F, FE, Kind<G, A>>, Kind2<F, FE, Kind<G, B>>>
}

Added in v2.0.0

CompactableComposition22 (interface)

Signature

export interface CompactableComposition22<F extends URIS2, G extends URIS2> extends FunctorComposition22<F, G> {
  readonly compact: <FE, GE, A>(fga: Kind2<F, FE, Kind2<G, GE, Option<A>>>) => Kind2<F, FE, Kind2<G, GE, A>>
  readonly separate: <FE, GE, A, B>(
    fge: Kind2<F, FE, Kind2<G, GE, Either<A, B>>>
  ) => Separated<Kind2<F, FE, Kind2<G, GE, A>>, Kind2<F, FE, Kind2<G, GE, B>>>
}

Added in v2.0.0

CompactableComposition22C (interface)

Signature

export interface CompactableComposition22C<F extends URIS2, G extends URIS2, E> extends FunctorComposition22C<F, G, E> {
  readonly compact: <FE, A>(fga: Kind2<F, FE, Kind2<G, E, Option<A>>>) => Kind2<F, FE, Kind2<G, E, A>>
  readonly separate: <FE, A, B>(
    fge: Kind2<F, FE, Kind2<G, E, Either<A, B>>>
  ) => Separated<Kind2<F, FE, Kind2<G, E, A>>, Kind2<F, FE, Kind2<G, E, B>>>
}

Added in v2.0.0

CompactableComposition23 (interface)

Signature

export interface CompactableComposition23<F extends URIS2, G extends URIS3> extends FunctorComposition23<F, G> {
  readonly compact: <R, FE, GE, A>(fga: Kind2<F, FE, Kind3<G, R, GE, Option<A>>>) => Kind2<F, FE, Kind3<G, R, GE, A>>
  readonly separate: <R, FE, GE, A, B>(
    fge: Kind2<F, FE, Kind3<G, R, GE, Either<A, B>>>
  ) => Separated<Kind2<F, FE, Kind3<G, R, GE, A>>, Kind2<F, FE, Kind3<G, R, GE, B>>>
}

Added in v2.2.0

CompactableComposition23C (interface)

Signature

export interface CompactableComposition23C<F extends URIS2, G extends URIS3, E> extends FunctorComposition23C<F, G, E> {
  readonly compact: <FE, R, A>(fga: Kind2<F, FE, Kind3<G, R, E, Option<A>>>) => Kind2<F, FE, Kind3<G, R, E, A>>
  readonly separate: <FE, R, A, B>(
    fge: Kind2<F, FE, Kind3<G, R, E, Either<A, B>>>
  ) => Separated<Kind2<F, FE, Kind3<G, R, E, A>>, Kind2<F, FE, Kind3<G, R, E, B>>>
}

Added in v2.2.0

CompactableComposition2C1 (interface)

Signature

export interface CompactableComposition2C1<F extends URIS2, G extends URIS, E> extends FunctorComposition2C1<F, G, E> {
  readonly compact: <A>(fga: Kind2<F, E, Kind<G, Option<A>>>) => Kind2<F, E, Kind<G, A>>
  readonly separate: <A, B>(
    fge: Kind2<F, E, Kind<G, Either<A, B>>>
  ) => Separated<Kind2<F, E, Kind<G, A>>, Kind2<F, E, Kind<G, B>>>
}

Added in v2.0.0

Separated (interface)

A Separated type which holds left and right parts.

Signature

export interface Separated<A, B> {
  readonly left: A
  readonly right: B
}

Added in v2.0.0

getCompactableComposition (function)

Signature

export function getCompactableComposition<F extends URIS2, G extends URIS3, E>(
  F: Functor2<F>,
  G: Compactable3C<G, E> & Functor3C<G, E>
): CompactableComposition23C<F, G, E>
export function getCompactableComposition<F extends URIS2, G extends URIS2, E>(
  F: Functor2<F>,
  G: Compactable2C<G, E> & Functor2C<G, E>
): CompactableComposition22C<F, G, E>
export function getCompactableComposition<F extends URIS2, G extends URIS2>(
  F: Functor2<F>,
  G: Compactable2<G> & Functor2<G>
): CompactableComposition22<F, G>
export function getCompactableComposition<F extends URIS2, G extends URIS, E>(
  F: Functor2C<F, E>,
  G: Compactable1<G> & Functor1<G>
): CompactableComposition2C1<F, G, E>
export function getCompactableComposition<F extends URIS2, G extends URIS>(
  F: Functor2<F>,
  G: Compactable1<G> & Functor1<G>
): CompactableComposition21<F, G>
export function getCompactableComposition<F extends URIS, G extends URIS2, E>(
  F: Functor1<F>,
  G: Compactable2C<G, E> & Functor2C<G, E>
): CompactableComposition12<F, G>
export function getCompactableComposition<F extends URIS, G extends URIS2>(
  F: Functor1<F>,
  G: Compactable2<G> & Functor2<G>
): CompactableComposition12<F, G>
export function getCompactableComposition<F extends URIS, G extends URIS>(
  F: Functor1<F>,
  G: Compactable1<G> & Functor1<G>
): CompactableComposition11<F, G>
export function getCompactableComposition<F, G>(
  F: Functor<F>,
  G: Compactable<G> & Functor<G>
): CompactableComposition<F, G> { ... }

Added in v2.0.0