javascalautils

Class Left<L,R>

java.lang.Object

javascalautils.Left<L,R>

Type Parameters:

L - The type for the Left side

R - The type for the Right side (not used for this class)

All Implemented Interfaces:

Serializable, Either<L,R>

public final class Left<L,R>
extends Object
implements Either<L,R>, Serializable

Represents the Left side of an Either.

Since:

1.1

Author:

Peter Nerg

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Left(L value) Creates an instance wrapping the provide value.

Method Summary

Modifier and Type	Method and Description
<T> T	fold(java.util.function.Function<L,T> func_left, java.util.function.Function<R,T> func_right) Applies the provided func_left to the wrapped value and returns the result.
boolean	isRight() Always returns false.
Either<R,L>	swap() Returns a Right containing the value for this instance.
String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface javascalautils.Either

isLeft, left, right

Constructor Detail

Left

public Left(L value)

Creates an instance wrapping the provide value.

Parameters:

value - The value wrapped by this instance

Method Detail

fold

public <T> T fold(java.util.function.Function<L,T> func_left,
                  java.util.function.Function<R,T> func_right)

Applies the provided func_left to the wrapped value and returns the result.

Specified by:

fold in interface Either<L,R>

Type Parameters:

T - The type to return from func_left/func_right

Parameters:

func_left - The function to apply in case this is a Left

func_right - The function to apply in case this is a Right

Returns:

The result from applying either func_left or func_right

isRight

public boolean isRight()

Always returns false.

Specified by:

isRight in interface Either<L,R>

Returns:

true if this instance is Right.

swap

public Either<R,L> swap()

Returns a Right containing the value for this instance.

Specified by:

swap in interface Either<L,R>

Returns:

The swapped version of this instance

toString

public String toString()

Overrides:

toString in class Object