Interface LongUnaryOperator

All Superinterfaces:

Function<Long,Long>, LongUnaryOperator, UnaryOperator<Long>

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 LongUnaryOperator
extends UnaryOperator<Long>, LongUnaryOperator

A type-specific UnaryOperator; provides methods operating both on objects and on primitives.

Since:

8.5.0

See Also:

• UnaryOperator

Method Summary

Modifier and Type	Method	Description
long	apply(long x)	Computes the operator on the given input.
default Long	apply(Long x)	Deprecated. Please use the corresponding type-specific method instead.
default long	applyAsLong(long x)	Deprecated. Please use apply(long).
static LongUnaryOperator	identity()	Returns a UnaryOperator that always returns the input unmodified.
static LongUnaryOperator	negation()	Returns a UnaryOperator that always returns the arithmetic negation of the input.

Methods inherited from interface java.util.function.Function

andThen, compose

Methods inherited from interface java.util.function.LongUnaryOperator

andThen, compose

Method Details

apply

long apply(long x)

Computes the operator on the given input.

Parameters:

x - the input.

Returns:

the output of the operator on the given input.

identity

static LongUnaryOperator identity()

Returns a UnaryOperator that always returns the input unmodified.

See Also:

• UnaryOperator.identity()

negation

static LongUnaryOperator negation()

Returns a UnaryOperator that always returns the arithmetic negation of the input.

Implementation Notes:

As with all negation, be wary of unexpected behavior near the minimum value of the data type. For example, -Integer.MIN_VALUE will result in Integer.MIN_VALUE (still negative), as the positive value of Integer.MIN_VALUE is too big for int (it would be 1 greater then Integer.MAX_VALUE).

applyAsLong

@Deprecated
default long applyAsLong(long x)

Deprecated.

Please use apply(long).

Specified by:

applyAsLong in interface LongUnaryOperator

Implementation Specification:

This default implementation delegates to apply(long).

apply

@Deprecated
default Long apply(Long x)

Deprecated.

Please use the corresponding type-specific method instead.

Specified by:

apply in interface Function<Long,Long>