Package org.apache.commons.lang3.function

Interface FailableDoubleUnaryOperator<E extends java.lang.Throwable>

  • Type Parameters:
    E - Thrown exception.
    public interface FailableDoubleUnaryOperator<E extends java.lang.Throwable>
    A functional interface like DoubleUnaryOperator that declares a Throwable.
    Since:
    3.11

    • Method Detail

      • identity

        static <E extends java.lang.Throwable> FailableDoubleUnaryOperator<E> identity()
        Returns a unary operator that always returns its input argument.
        Type Parameters:
        E - Thrown exception.
        Returns:
        a unary operator that always returns its input argument

      • nop

        static <E extends java.lang.Throwable> FailableDoubleUnaryOperator<E> nop()
        Returns The NOP singleton.
        Type Parameters:
        E - Thrown exception.
        Returns:
        The NOP singleton.

      • andThen

        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 - if after is null.
        See Also:
        compose(FailableDoubleUnaryOperator)

      • applyAsDouble

        double applyAsDouble​(double operand)
              throws E extends java.lang.Throwable
        Applies this operator to the given operand.
        Parameters:
        operand - the operand
        Returns:
        the operator result
        Throws:
        E - Thrown when a consumer fails.
        E extends java.lang.Throwable

      • compose

        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 - if before is null.
        See Also:
        andThen(FailableDoubleUnaryOperator)