DoubleUnaryOperator
public
interface
DoubleUnaryOperator
| java.util.function.DoubleUnaryOperator |
Represents an operation on a single double-valued operand that produces
a double-valued result. This is the primitive type specialization of
UnaryOperator for double.
This is a functional interface
whose functional method is applyAsDouble(double).
See also:
Summary
Public methods | |
|---|---|
default
DoubleUnaryOperator
|
andThen(DoubleUnaryOperator after)
Returns a composed operator that first applies this operator to
its input, and then applies the |
abstract
double
|
applyAsDouble(double operand)
Applies this operator to the given operand. |
default
DoubleUnaryOperator
|
compose(DoubleUnaryOperator before)
Returns a composed operator that first applies the |
static
DoubleUnaryOperator
|
identity()
Returns a unary operator that always returns its input argument. |
Public methods
andThen
public DoubleUnaryOperator andThen (DoubleUnaryOperator 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 |
DoubleUnaryOperator: the operator to apply after this operator is applied |
| Returns | |
|---|---|
DoubleUnaryOperator |
a composed operator that first applies this operator and then
applies the after operator |
| Throws | |
|---|---|
NullPointerException |
if after is null |
See also:
applyAsDouble
public abstract double applyAsDouble (double operand)
Applies this operator to the given operand.
| Parameters | |
|---|---|
operand |
double: the operand |
| Returns | |
|---|---|
double |
the operator result |
compose
public DoubleUnaryOperator compose (DoubleUnaryOperator 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 |
DoubleUnaryOperator: the operator to apply before this operator is applied |
| Returns | |
|---|---|
DoubleUnaryOperator |
a composed operator that first applies the before
operator and then applies this operator |
| Throws | |
|---|---|
NullPointerException |
if before is null |
See also:
identity
public static DoubleUnaryOperator identity ()
Returns a unary operator that always returns its input argument.
| Returns | |
|---|---|
DoubleUnaryOperator |
a unary operator that always returns its input argument |