Module java.base

Package java.util.function

Interface ToDoubleFunction<T>

Type Parameters:

T - the type of the input to the function

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 ToDoubleFunction<T>

Represents a function that produces a double-valued result. This is the double-producing primitive specialization for Function.

This is a functional interface whose functional method is applyAsDouble(Object).

Since:

1.8

See Also:

• Function

Method Summary

Modifier and Type	Method	Description
double	applyAsDouble(T value)	Applies this function to the given argument.

Method Details

applyAsDouble

double applyAsDouble(T value)

Applies this function to the given argument.

Parameters:

value - the function argument

Returns:

the function result