index

fun <T, S, I, A> Lens<T, S>.index(ID: Index<S, I, A>, i: I): Optional<T, A>

DSL to compose Index with a Lens for a structure S to focus in on A at given index I

Receiver

Lens with a focus in S

Return

Optional with a focus in A at given index I

Parameters

Index instance to provide a Optional to focus into S at I

index I to focus into S and find focus A

fun <T, S, I, A> Iso<T, S>.index(ID: Index<S, I, A>, i: I): Optional<T, A>

DSL to compose Index with an Iso for a structure S to focus in on A at given index I

Receiver

Iso with a focus in S

Return

Optional with a focus in A at given index I

Parameters

Index instance to provide a Optional to focus into S at I

index I to focus into S and find focus A

fun <T, S, I, A> Prism<T, S>.index(ID: Index<S, I, A>, i: I): Optional<T, A>

DSL to compose Index with a Prism for a structure S to focus in on A at given index I

Receiver

Prism with a focus in S

Return

Optional with a focus in A at given index I

Parameters

Index instance to provide a Optional to focus into S at I

index I to focus into S and find focus A

fun <T, S, I, A> Optional<T, S>.index(ID: Index<S, I, A>, i: I): Optional<T, A>

DSL to compose Index with an Optional for a structure S to focus in on A at given index I

Receiver

Optional with a focus in S

Return

Optional with a focus in A at given index I

Parameters

Index instance to provide a Optional to focus into S at I

index I to focus into S and find focus A

fun <T, S, I, A> Setter<T, S>.index(ID: Index<S, I, A>, i: I): Setter<T, A>

DSL to compose Index with a Setter for a structure S to focus in on A at given index I

Receiver

Setter with a focus in S

Return

Setter with a focus in A at given index I.

Parameters

Index instance to provide a Optional to focus into S at I

index I to focus into S and find focus A

fun <T, S, I, A> Traversal<T, S>.index(ID: Index<S, I, A>, i: I): Traversal<T, A>

DSL to compose Index with a Traversal for a structure S to focus in on A at given index I

Receiver

Traversal with a focus in S

Return

Traversal with a focus in A at given index I.

Parameters

Index instance to provide a Optional to focus into S at I

index I to focus into S and find focus A

fun <T, S, I, A> Fold<T, S>.index(ID: Index<S, I, A>, i: I): Fold<T, A>

DSL to compose Index with a Fold for a structure S to focus in on A at given index I

Receiver

Fold with a focus in S

Return

Fold with a focus in A at given index I.

Parameters

Index instance to provide a Optional to focus into S at I

index I to focus into S and find focus A