de.caff.generics

Interface TwoWayChoice<T>

Type Parameters:

T - value type

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface TwoWayChoice<T>

A choice between two values. One value is associated with true, the other with false. This is basically the functional equivalent of the ternary operator with the restriction that both values have to be null. See TwoWayChoiceN with does not have this restriction.

The recommended way to create a two-way choice is of(Object, Object).

Since:

December 27, 2022

Author:

Rammi

Method Summary

Modifier and Type	Method and Description
T	choose(boolean select) Return the selected choice.
static <V> TwoWayChoice<V>	of(V trueValue, V falseValue) Create a two-way choice.

Method Detail

choose

@NotNull
T choose(boolean select)

Return the selected choice.

Parameters:

select - selector

Returns:

selected choice

of

@NotNull
static <V> TwoWayChoice<V> of(@NotNull
                                       V trueValue,
                                       @NotNull
                                       V falseValue)

Create a two-way choice.

Type Parameters:

V - value type of selection

Parameters:

trueValue - value returned for true selector, required to be not null

falseValue - value returned for false selector, required to be not null

Returns:

boolean choice which performs the same as select ? trueValue : falseValue