@FunctionalInterface public interface DoubleUnaryOperator
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)
.
UnaryOperator
Modifier and Type | Method | Description |
---|---|---|
default 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. |
double |
applyAsDouble(double operand) |
Applies this operator to the given operand.
|
default 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. |
static DoubleUnaryOperator |
identity() |
Returns a unary operator that always returns its input argument.
|
double applyAsDouble(double operand)
operand
- the operanddefault DoubleUnaryOperator compose(DoubleUnaryOperator before)
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.before
- the operator to apply before this operator is appliedbefore
operator and then applies this operatorNullPointerException
- if before is nullandThen(DoubleUnaryOperator)
default DoubleUnaryOperator andThen(DoubleUnaryOperator after)
after
operator to the result.
If evaluation of either operator throws an exception, it is relayed to
the caller of the composed operator.after
- the operator to apply after this operator is appliedafter
operatorNullPointerException
- if after is nullcompose(DoubleUnaryOperator)
static DoubleUnaryOperator identity()
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For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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DRAFT 9-internal+0-adhoc.mlchung.jdk9-jdeps