Index

fun interface Index<S, I, A>

Index provides an Optional for a structure S to focus in an optional A at a given index I.

source of Optional

index

focus of Optional, A is supposed to be unique for a given pair S and I.

Types

open operator fun <T> Optional<T, S>.get(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.

open operator fun <T> Traversal<T, S>.get(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.

abstract fun index(i: I): Optional<S, A>

Get Optional focus A for a structure S at index i.

open fun <T> Optional<T, S>.index(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.

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