A FunctorWithIndex
is a type constructor which supports a mapping operation mapWithIndex
.
mapWithIndex
can be used to turn functions i -> a -> b
into functions f a -> f b
whose argument and return types use the type
constructor f
to represent some computational context.
Instances must satisfy the following laws:
F.mapWithIndex(fa, (_i, a) => a) <-> fa
F.mapWithIndex(fa, (_i, a) => bc(ab(a))) <-> F.mapWithIndex(F.mapWithIndex(fa, ab), bc)
Added in v2.0.0
Signature
export interface FunctorWithIndex<F, I> extends Functor<F> {
readonly mapWithIndex: <A, B>(fa: HKT<F, A>, f: (i: I, a: A) => B) => HKT<F, B>
}
Added in v2.0.0
Signature
export interface FunctorWithIndex1<F extends URIS, I> extends Functor1<F> {
readonly mapWithIndex: <A, B>(fa: Kind<F, A>, f: (i: I, a: A) => B) => Kind<F, B>
}
Added in v2.0.0
Signature
export interface FunctorWithIndex2<F extends URIS2, I> extends Functor2<F> {
readonly mapWithIndex: <E, A, B>(fa: Kind2<F, E, A>, f: (i: I, a: A) => B) => Kind2<F, E, B>
}
Added in v2.0.0
Signature
export interface FunctorWithIndex2C<F extends URIS2, I, E> extends Functor2C<F, E> {
readonly mapWithIndex: <A, B>(fa: Kind2<F, E, A>, f: (i: I, a: A) => B) => Kind2<F, E, B>
}
Added in v2.0.0
Signature
export interface FunctorWithIndex3<F extends URIS3, I> extends Functor3<F> {
readonly mapWithIndex: <R, E, A, B>(fa: Kind3<F, R, E, A>, f: (i: I, a: A) => B) => Kind3<F, R, E, B>
}
Added in v2.0.0
Signature
export interface FunctorWithIndex3C<F extends URIS3, I, E> extends Functor3C<F, E> {
readonly mapWithIndex: <R, A, B>(fa: Kind3<F, R, E, A>, f: (i: I, a: A) => B) => Kind3<F, R, E, B>
}
Added in v2.2.0
Signature
export interface FunctorWithIndex4<F extends URIS4, I> extends Functor4<F> {
readonly mapWithIndex: <S, R, E, A, B>(fa: Kind4<F, S, R, E, A>, f: (i: I, a: A) => B) => Kind4<F, S, R, E, B>
}
Added in v2.0.0
Signature
export interface FunctorWithIndexComposition<F, FI, G, GI> extends FunctorComposition<F, G> {
readonly mapWithIndex: <A, B>(fga: HKT<F, HKT<G, A>>, f: (i: [FI, GI], a: A) => B) => HKT<F, HKT<G, B>>
}
Added in v2.0.0
Signature
export interface FunctorWithIndexComposition11<F extends URIS, FI, G extends URIS, GI>
extends FunctorComposition11<F, G> {
readonly mapWithIndex: <A, B>(fa: Kind<F, Kind<G, A>>, f: (i: [FI, GI], a: A) => B) => Kind<F, Kind<G, B>>
}
Added in v2.0.0
Signature
export interface FunctorWithIndexComposition12<F extends URIS, FI, G extends URIS2, GI>
extends FunctorComposition12<F, G> {
readonly mapWithIndex: <E, A, B>(fa: Kind<F, Kind2<G, E, A>>, f: (i: [FI, GI], a: A) => B) => Kind<F, Kind2<G, E, B>>
}
Added in v2.0.0
Signature
export interface FunctorWithIndexComposition12C<F extends URIS, FI, G extends URIS2, GI, E>
extends FunctorComposition12C<F, G, E> {
readonly mapWithIndex: <A, B>(fa: Kind<F, Kind2<G, E, A>>, f: (i: [FI, GI], a: A) => B) => Kind<F, Kind2<G, E, B>>
}
Added in v2.0.0
Signature
export interface FunctorWithIndexComposition21<F extends URIS2, FI, G extends URIS, GI>
extends FunctorComposition21<F, G> {
readonly mapWithIndex: <E, A, B>(fa: Kind2<F, E, Kind<G, A>>, f: (i: [FI, GI], a: A) => B) => Kind2<F, E, Kind<G, B>>
}
Added in v2.0.0
Signature
export interface FunctorWithIndexComposition22<F extends URIS2, FI, G extends URIS2, GI>
extends FunctorComposition22<F, G> {
readonly mapWithIndex: <FE, GE, A, B>(
fa: Kind2<F, FE, Kind2<G, GE, A>>,
f: (i: [FI, GI], a: A) => B
) => Kind2<F, FE, Kind2<G, GE, B>>
}
Added in v2.0.0
Signature
export interface FunctorWithIndexComposition22C<F extends URIS2, FI, G extends URIS2, GI, E>
extends FunctorComposition22C<F, G, E> {
readonly mapWithIndex: <FE, A, B>(
fa: Kind2<F, FE, Kind2<G, E, A>>,
f: (i: [FI, GI], a: A) => B
) => Kind2<F, FE, Kind2<G, E, B>>
}
Added in v2.0.0
Signature
export interface FunctorWithIndexComposition2C1<F extends URIS2, FI, G extends URIS, GI, E>
extends FunctorComposition2C1<F, G, E> {
readonly mapWithIndex: <A, B>(fa: Kind2<F, E, Kind<G, A>>, f: (i: [FI, GI], a: A) => B) => Kind2<F, E, Kind<G, B>>
}
Added in v2.0.0
Signature
export declare function getFunctorWithIndexComposition<F extends URIS2, FI, G extends URIS2, GI, E>(
F: FunctorWithIndex2<F, FI>,
G: FunctorWithIndex2C<G, FI, E>
): FunctorWithIndexComposition22C<F, FI, G, GI, E>
export declare function getFunctorWithIndexComposition<F extends URIS2, FI, G extends URIS2, GI>(
F: FunctorWithIndex2<F, FI>,
G: FunctorWithIndex2<G, FI>
): FunctorWithIndexComposition22<F, FI, G, GI>
export declare function getFunctorWithIndexComposition<F extends URIS2, FI, G extends URIS, GI, E>(
F: FunctorWithIndex2C<F, FI, E>,
G: FunctorWithIndex1<G, GI>
): FunctorWithIndexComposition2C1<F, FI, G, GI, E>
export declare function getFunctorWithIndexComposition<F extends URIS2, FI, G extends URIS, GI>(
F: FunctorWithIndex2<F, FI>,
G: FunctorWithIndex1<G, GI>
): FunctorWithIndexComposition21<F, FI, G, GI>
export declare function getFunctorWithIndexComposition<F extends URIS, FI, G extends URIS2, GI, E>(
F: FunctorWithIndex1<F, FI>,
G: FunctorWithIndex2C<G, GI, E>
): FunctorWithIndexComposition12C<F, FI, G, GI, E>
export declare function getFunctorWithIndexComposition<F extends URIS, FI, G extends URIS2, GI>(
F: FunctorWithIndex1<F, FI>,
G: FunctorWithIndex2<G, GI>
): FunctorWithIndexComposition12<F, FI, G, GI>
export declare function getFunctorWithIndexComposition<F extends URIS, FI, G extends URIS, GI>(
F: FunctorWithIndex1<F, FI>,
G: FunctorWithIndex1<G, GI>
): FunctorWithIndexComposition11<F, FI, G, GI>
export declare function getFunctorWithIndexComposition<F, FI, G, GI>(
F: FunctorWithIndex<F, FI>,
G: FunctorWithIndex<G, GI>
): FunctorWithIndexComposition<F, FI, G, GI>
Added in v2.0.0