LongUnaryOperator (Java Platform SE 8 )

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
```
Represents an operation on a single long-valued operand that produces a long-valued result. This is the primitive type specialization of UnaryOperator for long.
This is a functional interface whose functional method is applyAsLong(long).

Since:

1.8

See Also:

UnaryOperator

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method and Description
`default LongUnaryOperator`	`andThen(LongUnaryOperator after)` Returns a composed operator that first applies this operator to its input, and then applies the `after` operator to the result.
`long`	`applyAsLong(long operand)` Applies this operator to the given operand.
`default LongUnaryOperator`	`compose(LongUnaryOperator before)` Returns a composed operator that first applies the `before` operator to its input, and then applies this operator to the result.
`static LongUnaryOperator`	`identity()` Returns a unary operator that always returns its input argument.

- Method Detail
  - applyAsLong
```
long applyAsLong(long operand)
```
    Applies this operator to the given operand.
    
    Parameters:
    
    operand - the operand
    
    Returns:
    
    the operator result
  - compose
```
default LongUnaryOperator compose(LongUnaryOperator before)
```
    Returns a composed operator that first applies the before operator to its input, and then applies this operator to the result. If evaluation of either operator throws an exception, it is relayed to the caller of the composed operator.
    
    Parameters:
    
    before - the operator to apply before this operator is applied
    
    Returns:
    
    a composed operator that first applies the before operator and then applies this operator
    
    Throws:
    
    NullPointerException - if before is null
    
    See Also:
    
    andThen(LongUnaryOperator)
  - andThen
```
default LongUnaryOperator andThen(LongUnaryOperator after)
```
    Returns a composed operator that first applies this operator to its input, and then applies the after operator to the result. If evaluation of either operator throws an exception, it is relayed to the caller of the composed operator.
    
    Parameters:
    
    after - the operator to apply after this operator is applied
    
    Returns:
    
    a composed operator that first applies this operator and then applies the after operator
    
    Throws:
    
    NullPointerException - if after is null
    
    See Also:
    
    compose(LongUnaryOperator)
  - identity
```
static LongUnaryOperator identity()
```
    Returns a unary operator that always returns its input argument.
    
    Returns:
    
    a unary operator that always returns its input argument

Submit a bug or feature
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
Copyright © 1993, 2019, Oracle and/or its affiliates. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.

Interface LongUnaryOperator

Method Summary

Method Detail

applyAsLong

compose

andThen

identity