LongUnaryOperator

  • LongUnaryOperator is a functional interface representing an operation on a single long input that produces a long output.

  • It provides methods like applyAsLong to apply the operation, andThen to chain operations sequentially, and compose to chain operations in reverse order.

  • identity is a static method that returns an operator which returns its input unchanged.
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).

See Also

Public Method Summary

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.
abstract long
applyAsLong(long operand)
Applies this operator to the given operand.
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.

Public Methods

public 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

public abstract long applyAsLong (long operand)

Applies this operator to the given operand.

Parameters
operand the operand
Returns
  • the operator result

public 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

public static LongUnaryOperator identity ()

Returns a unary operator that always returns its input argument.

Returns
  • a unary operator that always returns its input argument