//arrow-optics/arrow.optics/PEvery

PEvery

common interface PEvery<S, T, A, B> : PTraversal<S, T, A, B> , Fold<S, A> , PSetter<S, T, A, B>

Composition of Fold and Traversal It combines their powers

Types

Name Summary
Companion common object Companion

Functions

Name Summary
all common open fun all(source: S, predicate: (A) -> Boolean): Boolean
Check if all targets satisfy the predicate
any common open fun any(source: S, predicate: (A) -> Boolean): Boolean
Returns true if at least one focus matches the given predicate.
choice common open infix fun <C> choice(other: Fold<C, A>): Fold<Either<S, C>, A>
Join two Fold with the same target
common open infix fun <U, V> choice(other: PSetter<U, V, A, B>): PSetter<Either<S, U>, Either<T, V>, A, B>
Join two PSetter with the same target
common open fun <U, V> choice(other: PTraversal<U, V, A, B>): PTraversal<Either<S, U>, Either<T, V>, A, B>
combineAll common open fun combineAll(M: Monoid<A>, source: S): A
Alias for fold.
compose common open infix fun <C> compose(other: Fold<in A, out C>): Fold<S, C>
Compose a Fold with a Fold
common open infix fun <C, D> compose(other: PEvery<in A, out B, out C, in D>): PEvery<S, T, C, D>
Compose a PEvery with a PEvery
common open infix fun <C, D> compose(other: PSetter<in A, out B, out C, in D>): PSetter<S, T, C, D>
Compose a PSetter with a PSetter
common open infix fun <C, D> compose(other: PTraversal<in A, out B, out C, in D>): PTraversal<S, T, C, D>
Compose a PTraversal with a PTraversal
exists common open fun exists(source: S, predicate: (A) -> Boolean): Boolean
Check whether at least one element satisfies the predicate.
findOrNull common open fun findOrNull(source: S, predicate: (A) -> Boolean): A?
Find the first element matching the predicate, if one exists.
firstOrNull common open fun firstOrNull(source: S): A?
Get the first target or null
fold common open fun fold(M: Monoid<A>, source: S): A
Fold using the given Monoid instance.
foldMap common abstract override fun <R> foldMap(M: Monoid<R>, source: S, map: (A) -> R): R
Map each target to a type R and use a Monoid to fold the results
getAll common open fun getAll(source: S): List<A>
Get all targets of the Fold
isEmpty common open fun isEmpty(source: S): Boolean
Check if there is no target
isNotEmpty common open fun isNotEmpty(source: S): Boolean
Check if there is at least one target
lastOrNull common open fun lastOrNull(source: S): A?
Get the last target or null
left common open fun <C> left(): Fold<Either<S, C>, Either<A, C»
Create a sum of the Fold and a type C
lift common open fun lift(map: (A) -> B): (S) -> T
Lift a function map: (A) -> B to the context of S: (S) -> T`
modify common abstract override fun modify(source: S, map: (A) -> B): T
Modify polymorphically the focus of a PSetter with a function map.
plus common open operator fun <C> plus(other: Fold<in A, out C>): Fold<S, C>
open operator fun <C, D> plus(other: PEvery<in A, out B, out C, in D>): PEvery<S, T, C, D>
open operator fun <C, D> plus(other: PSetter<in A, out B, out C, in D>): PSetter<S, T, C, D>
open operator fun <C, D> plus(other: PTraversal<in A, out B, out C, in D>): PTraversal<S, T, C, D>
right common open fun <C> right(): Fold<Either<C, S>, Either<C, A»
Create a sum of a type C and the Fold
set common open fun set(source: S, focus: B): T
Set polymorphically the focus of a PSetter with a value b.
size common open fun size(source: S): Int
Calculate the number of targets

Properties

Name Summary
every common open override val <U, V> PLens<U, V, S, T>.every: PEvery<U, V, A, B>
DSL to compose Every with a Lens for a structure S to see all its foci A
every common open override val <U, V> PIso<U, V, S, T>.every: PEvery<U, V, A, B>
DSL to compose Every with a Iso for a structure S to see all its foci A
every common open override val <U, V> PPrism<U, V, S, T>.every: PEvery<U, V, A, B>
DSL to compose Every with a Prism for a structure S to see all its foci A
every common open override val <U, V> POptional<U, V, S, T>.every: PEvery<U, V, A, B>
DSL to compose Every with a Optional for a structure S to see all its foci A
every common open override val <U, V> PSetter<U, V, S, T>.every: PSetter<U, V, A, B>
DSL to compose Every with a Setter for a structure S to see all its foci A
every common open override val <U, V> PTraversal<U, V, S, T>.every: PTraversal<U, V, A, B>
DSL to compose Every with a Traversal for a structure S to see all its foci A
every common open val <U, V> PEvery<U, V, S, T>.every: PTraversal<U, V, A, B>
DSL to compose Traversal with a PEvery for a structure S to see all its foci A

Inheritors

Name
PIso
PLens
POptional
PPrism

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