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package java.util.function;

Represents a function that produces a long-valued result. This is the long-producing primitive specialization for Function. 
This is a functional interface whose functional method is applyAsLong(Object). 
Type parameters:
<T> – the type of the input to the function
See Also:
Function
Since:
1.8/**
 * Represents a function that produces a long-valued result.  This is the
 * {@code long}-producing primitive specialization for {@link Function}.
 *
 * <p>This is a <a href="package-summary.html">functional interface</a>
 * whose functional method is {@link #applyAsLong(Object)}.
 *
 * @param <T> the type of the input to the function
 *
 * @see Function
 * @since 1.8
 */
@FunctionalInterface
public interface ToLongFunction<T> {

    
Applies this function to the given argument.
Params:
value – the function argument
Returns:
the function result/**
     * Applies this function to the given argument.
     *
     * @param value the function argument
     * @return the function result
     */
    long applyAsLong(T value);
}