de.javagl.common.functional

Class ToDoubleBiFunctions

java.lang.Object

de.javagl.common.functional.ToDoubleBiFunctions

public class ToDoubleBiFunctions
extends Object

Utility methods for creating ToDoubleBiFunction instances.

Method Summary

Modifier and Type	Method and Description
static <T,U,R> ToDoubleBiFunction<T,U>	compose(BiFunction<? super T,? super U,? extends R> biFunction, ToDoubleFunction<? super R> function) Composes the given functions
static <T,U,R> BiFunction<T,U,R>	compose(ToDoubleBiFunction<? super T,? super U> biFunction, DoubleFunction<? extends R> function) Composes the given functions
static <T,U,R> ToDoubleBiFunction<T,U>	compose(ToDoubleBiFunction<? super T,? super U> biFunction, DoubleUnaryOperator operator) Composes the given functions
static <T,U,R extends Number> ToDoubleBiFunction<T,U>	unbox(BiFunction<T,U,R> f, double returnValueForNull) Returns a view on the given BiFunction as a ToDoubleBiFunction that thus unboxing the return type from a Number (like Double) to double

Methods inherited from class java.lang.Object

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

Method Detail

unbox

public static <T,U,R extends Number> ToDoubleBiFunction<T,U> unbox(BiFunction<T,U,R> f,
                                                                   double returnValueForNull)

Returns a view on the given BiFunction as a ToDoubleBiFunction that thus unboxing the return type from a Number (like Double) to double

Type Parameters:

T - The first argument type

U - The second argument type

R - The return value type

Parameters:

f - The function

returnValueForNull - The return value that should be used when the given delegate function returns null

Returns:

The unboxed function

compose

public static <T,U,R> ToDoubleBiFunction<T,U> compose(BiFunction<? super T,? super U,? extends R> biFunction,
                                                      ToDoubleFunction<? super R> function)

Composes the given functions

Type Parameters:

T - The first argument type

U - The second argument type

R - The first result type

Parameters:

biFunction - The BiFunction

function - The ToDoubleFunction

Returns:

The resulting ToDoubleBiFunction

compose

public static <T,U,R> BiFunction<T,U,R> compose(ToDoubleBiFunction<? super T,? super U> biFunction,
                                                DoubleFunction<? extends R> function)

Composes the given functions

Type Parameters:

T - The first argument type

U - The second argument type

R - The result type

Parameters:

biFunction - The ToDoubleBiFunction

function - The DoubleFunction

Returns:

The resulting BiFunction

compose

public static <T,U,R> ToDoubleBiFunction<T,U> compose(ToDoubleBiFunction<? super T,? super U> biFunction,
                                                      DoubleUnaryOperator operator)

Composes the given functions

Type Parameters:

T - The first argument type

U - The second argument type

R - The first result type

Parameters:

biFunction - The ToDoubleBiFunction

operator - The DoubleUnaryOperator

Returns:

The resulting ToDoubleBiFunction