Class Pre<P extends Profunctor<?, ?, ? extends P>, S, T, A, B>

java.lang.Object

com.jnape.palatable.lambda.optics.functions.Pre<P,S,T,A,B>

Type Parameters:

S - the value to read from

T - used for unification of the optic's unused morphism

A - the result to maybe read out

B - used for unification of the optic's unused morphism

All Implemented Interfaces:

Fn1<Optic<P, ? super Const<Maybe<A>,?>, S, T, A, B>, Optic<P, Const<Maybe<A>,?>, S, T, Maybe<A>, B>>, Applicative<Optic<P, Const<Maybe<A>,?>, S, T, Maybe<A>, B>, Fn1<Optic<P, ? super Const<Maybe<A>,?>, S, T, A, B>, ?>>, Cartesian<Optic<P, ? super Const<Maybe<A>,?>, S, T, A, B>, Optic<P, Const<Maybe<A>,?>, S, T, Maybe<A>, B>, Fn1<?,?>>, Cocartesian<Optic<P, ? super Const<Maybe<A>,?>, S, T, A, B>, Optic<P, Const<Maybe<A>,?>, S, T, Maybe<A>, B>, Fn1<?,?>>, Contravariant<Optic<P, ? super Const<Maybe<A>,?>, S, T, A, B>, Profunctor<?, Optic<P, Const<Maybe<A>,?>, S, T, Maybe<A>, B>, Fn1<?,?>>>, Functor<Optic<P, Const<Maybe<A>,?>, S, T, Maybe<A>, B>, Fn1<Optic<P, ? super Const<Maybe<A>,?>, S, T, A, B>, ?>>, Profunctor<Optic<P, ? super Const<Maybe<A>,?>, S, T, A, B>, Optic<P, Const<Maybe<A>,?>, S, T, Maybe<A>, B>, Fn1<?,?>>, Monad<Optic<P, Const<Maybe<A>,?>, S, T, Maybe<A>, B>, Fn1<Optic<P, ? super Const<Maybe<A>,?>, S, T, A, B>, ?>>, MonadReader<Optic<P, ? super Const<Maybe<A>,?>, S, T, A, B>, Optic<P, Const<Maybe<A>,?>, S, T, Maybe<A>, B>, Fn1<Optic<P, ? super Const<Maybe<A>,?>, S, T, A, B>, ?>>, MonadRec<Optic<P, Const<Maybe<A>,?>, S, T, Maybe<A>, B>, Fn1<Optic<P, ? super Const<Maybe<A>,?>, S, T, A, B>, ?>>, MonadWriter<Optic<P, ? super Const<Maybe<A>,?>, S, T, A, B>, Optic<P, Const<Maybe<A>,?>, S, T, Maybe<A>, B>, Fn1<Optic<P, ? super Const<Maybe<A>,?>, S, T, A, B>, ?>>

public final class Pre<P extends Profunctor<?, ?, ? extends P>, S, T, A, B>
extends Object
implements Fn1<Optic<P, ? super Const<Maybe<A>,?>, S, T, A, B>, Optic<P, Const<Maybe<A>,?>, S, T, Maybe<A>, B>>

Turn an Optic with a unary mapping that can be used for viewing some number of values into an Optic that views the first value, if it exists.

Field Summary

Fields

Modifier and Type	Field	Description
private static final Pre<?,?,?,?,?>	INSTANCE

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Pre()

Method Summary

Modifier and Type	Method	Description
Optic<P, Const<Maybe<A>,?>, S, T, Maybe<A>, B>	checkedApply(Optic<P, ? super Const<Maybe<A>,?>, S, T, A, B> optic)	Invoke this function with the given argument, potentially throwing any Throwable.
static <P extends Profunctor<?, ?, ? extends P>, S, T, A, B> Pre<P,S,T,A,B>	pre()
static <P extends Profunctor<?, ?, ? extends P>, S, T, A, B> Optic<P, Const<Maybe<A>,?>, S, T, Maybe<A>, B>	pre(Optic<P, ? super Const<Maybe<A>,?>, S, T, A, B> optic)
static <P extends Profunctor<?, ?, ? extends P>, S, T, A, B> Optic<P, Const<Maybe<A>,?>, S, T, Maybe<A>, B>	pre(ProtoOptic<P,S,T,A,B> protoOptic)

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface Fn1

andThen, apply, carry, cartesian, censor, choose, cocartesian, compose, contraMap, diMap, diMapL, diMapR, discardL, discardR, flatMap, fmap, lazyZip, listens, local, pure, self, thunk, toFunction, trampolineM, widen, zip, zip

Methods inherited from interface Functor

coerce

Field Details

INSTANCE

private static final Pre<?,?,?,?,?> INSTANCE

Constructor Details

Pre

private Pre()

Method Details

checkedApply

public Optic<P, Const<Maybe<A>,?>, S, T, Maybe<A>, B> checkedApply(Optic<P, ? super Const<Maybe<A>,?>, S, T, A, B> optic)

Description copied from interface: Fn1

Invoke this function with the given argument, potentially throwing any Throwable.

Specified by:

checkedApply in interface Fn1<P extends Profunctor<?, ?, ? extends P>, S>

Parameters:

optic - the argument

Returns:

the result of the function application

pre

public static <P extends Profunctor<?, ?, ? extends P>, S, T, A, B>
Pre<P,S,T,A,B> pre()

pre

public static <P extends Profunctor<?, ?, ? extends P>, S, T, A, B>
Optic<P, Const<Maybe<A>,?>, S, T, Maybe<A>, B> pre(Optic<P, ? super Const<Maybe<A>,?>, S, T, A, B> optic)

pre

public static <P extends Profunctor<?, ?, ? extends P>, S, T, A, B>
Optic<P, Const<Maybe<A>,?>, S, T, Maybe<A>, B> pre(ProtoOptic<P,S,T,A,B> protoOptic)