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ToDoubleFunction.java

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/*

* Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.

* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.

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package java.util.function;

/**

* Represents a function that produces a double-valued result. This is the

* {@code double}-producing primitive specialization for {@link Function}.

*

* <p>This is a <a href="package-summary.html">functional interface</a>

* whose functional method is {@link #applyAsDouble(Object)}.

*

* @param <T> the type of the input to the function

*

* @see Function

* @since 1.8

*/

@FunctionalInterface

public interface ToDoubleFunction<T> {

/**

* Applies this function to the given argument.

*

* @param value the function argument

* @return the function result

*/

double applyAsDouble(T value);

}