de.caff.generics.function

Interface DoubleOperator1

All Superinterfaces:

java.util.function.DoubleUnaryOperator

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 DoubleOperator1
extends java.util.function.DoubleUnaryOperator

Unary operator with a double argument and result.

Since:

October 31, 2019

Author:

Rammi

Field Summary

Fields

Modifier and Type	Field and Description
static DoubleOperator1	CUBIC Cubic function.
static DoubleOperator1	CUBIC_ROOT Cubic root function.
static DoubleOperator1	IDENT Identity function.
static DoubleOperator1	NEGATE Standard NEGATE operator (-).
static DoubleOperator1	SQUARE Square function.
static DoubleOperator1	SQUARE_ROOT Square root function.

Method Summary

Modifier and Type	Method and Description
default DoubleOperator1	andThen(DoubleOperator1 after) Create a function which applies this function and feeds the result into the next function.
static DoubleOperator1	from(java.util.function.DoubleUnaryOperator operator) Make a standard unary double operator usable as DoubleOperator1.
default DoubleOperator0	partial(double argument) Create a zero argument function from this one by applying a constant argument.

Methods inherited from interface java.util.function.DoubleUnaryOperator

andThen, applyAsDouble, compose, identity

Field Detail

NEGATE

static final DoubleOperator1 NEGATE

Standard NEGATE operator (-).

IDENT

static final DoubleOperator1 IDENT

Identity function. This returns the argument.

SQUARE

static final DoubleOperator1 SQUARE

Square function. This returns the square of the argument.

CUBIC

static final DoubleOperator1 CUBIC

Cubic function. This returns the third power of the argument.

SQUARE_ROOT

static final DoubleOperator1 SQUARE_ROOT

Square root function. This returns the square root of the argument.

CUBIC_ROOT

static final DoubleOperator1 CUBIC_ROOT

Cubic root function. This returns the cubic root of the argument.

Method Detail

partial

@NotNull
default DoubleOperator0 partial(double argument)

Create a zero argument function from this one by applying a constant argument. Although useless for pure functions it can be useful in cases where the zero argument function is a factory (and therefore not pure).

Parameters:

argument - constant argument

Returns:

zero argument function

andThen

@NotNull
default DoubleOperator1 andThen(@NotNull
                                         DoubleOperator1 after)

Create a function which applies this function and feeds the result into the next function.

Parameters:

after - function called with the result of this function

Returns:

chained function

from

@NotNull
static DoubleOperator1 from(@NotNull
                                     java.util.function.DoubleUnaryOperator operator)

Make a standard unary double operator usable as DoubleOperator1. This is useful if you want to make use of the extended functionality of this implementation.

Parameters:

operator - operator to be used as a DoubleOperator1

Returns:

DoubleOperator1 view of the incoming operator, or possibly just a cast if operator already has the correct type