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Showing content from https://docs.oracle.com/javase/8/docs/api/java/util/function/LongUnaryOperator.html below:

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

  Since:

  1.8

  See Also:

  UnaryOperator

• • 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

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