com.github.robtimus.io.function

Interface LongUnaryIOOperator

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 LongUnaryIOOperator

Represents an operation on a single long-valued operand that produces a long-valued result. This is the IOException throwing equivalent of LongUnaryOperator.

Method Summary

Modifier and Type	Method and Description
default LongUnaryIOOperator	andThen(LongUnaryIOOperator 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.
static LongUnaryIOOperator	checked(LongUnaryOperator operator) Returns a unary operator that applies the operator operator to its input, and unwraps any UncheckedIOException that is thrown by throwing its cause.
default LongUnaryIOOperator	compose(LongUnaryIOOperator before) Returns a composed operator that first applies the before operator to its input, and then applies this operator to the result.
static LongUnaryIOOperator	identity() Returns a unary operator that always returns its input argument.
static LongUnaryOperator	unchecked(LongUnaryIOOperator operator) Returns a unary operator that applies the operator operator to its input, and wraps any IOException that is thrown in an UncheckedIOException.

Method Detail

applyAsLong

long applyAsLong(long operand)
          throws IOException

Applies this operator to the given operand.

Parameters:

operand - The operand.

Returns:

The operator result.

Throws:

IOException - If an I/O error occurs.

compose

default LongUnaryIOOperator compose(LongUnaryIOOperator 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(LongUnaryIOOperator)

andThen

default LongUnaryIOOperator andThen(LongUnaryIOOperator 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(LongUnaryIOOperator)

identity

static LongUnaryIOOperator identity()

Returns a unary operator that always returns its input argument.

Returns:

a unary operator that always returns its input argument

unchecked

static LongUnaryOperator unchecked(LongUnaryIOOperator operator)

Returns a unary operator that applies the operator operator to its input, and wraps any IOException that is thrown in an UncheckedIOException.

Parameters:

operator - The unary operator to apply when the returned unary operator is applied.

Returns:

A unary operator that applies the operator operator to its input, and wraps any IOException that is thrown in an UncheckedIOException.

Throws:

NullPointerException - If operator is null.

checked

static LongUnaryIOOperator checked(LongUnaryOperator operator)

Returns a unary operator that applies the operator operator to its input, and unwraps any UncheckedIOException that is thrown by throwing its cause.

Parameters:

operator - The unary operator to apply when the returned unary operator is applied.

Returns:

A unary operator that applies the operator operator to its input, and unwraps any UncheckedIOException that is thrown.

Throws:

NullPointerException - If operator is null.