FailableDoubleUnaryOperator

public abstract interface org.apache.commons.lang3.function.FailableDoubleUnaryOperator<E extends Throwable>

A functional interface like DoubleUnaryOperator that declares a Throwable.

Parameters:

<E> – The kind of thrown exception or error.

Since:

3.11

Fields and constants

NOP	NOP singleton

@SuppressWarnings({"rawtypes"}) public static final FailableDoubleUnaryOperator NOP

NOP singleton

Methods

andThen(FailableDoubleUnaryOperator)	Returns a composed FailableDoubleUnaryOperator like DoubleUnaryOperator#andThen(DoubleUnaryOperator).
applyAsDouble(double)	Applies this operator to the given operand.
compose(FailableDoubleUnaryOperator)	Returns a composed FailableDoubleUnaryOperator like DoubleUnaryOperator#compose(DoubleUnaryOperator).
identity()	Returns a unary operator that always returns its input argument.
nop()	Gets the NOP singleton.

public default FailableDoubleUnaryOperator<E> andThen(FailableDoubleUnaryOperator<E> after)

Returns a composed FailableDoubleUnaryOperator like DoubleUnaryOperator#andThen(DoubleUnaryOperator).

Parameters:

after – The operator to apply after this one.

Returns:

A composed FailableDoubleUnaryOperator like DoubleUnaryOperator#andThen(DoubleUnaryOperator).

Throws:

java.lang.NullPointerException – Thrown if after is null.

See also:

#compose(FailableDoubleUnaryOperator)

public abstract double applyAsDouble(double operand) throws E

Applies this operator to the given operand.

Parameters:

operand – The operand

Returns:

The operator result

Throws:

E – Thrown when a consumer fails.

public default FailableDoubleUnaryOperator<E> compose(FailableDoubleUnaryOperator<E> before)

Returns a composed FailableDoubleUnaryOperator like DoubleUnaryOperator#compose(DoubleUnaryOperator).

Parameters:

before – The operator to apply before this one.

Returns:

A composed FailableDoubleUnaryOperator like DoubleUnaryOperator#compose(DoubleUnaryOperator).

Throws:

java.lang.NullPointerException – Thrown if before is null.

See also:

#andThen(FailableDoubleUnaryOperator)

public static <E extends Throwable> FailableDoubleUnaryOperator<E> identity()

Returns a unary operator that always returns its input argument.

Type parameters:

<E> – The kind of thrown exception or error.

Returns:

A unary operator that always returns its input argument

@SuppressWarnings({"unchecked"}) public static <E extends Throwable> FailableDoubleUnaryOperator<E> nop()

Gets the NOP singleton.

Type parameters:

<E> – The kind of thrown exception or error.

Returns:

The NOP singleton.