compact1, compact2, compact3
java.util.function
Interface UnaryOperator<T>
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- Type Parameters:
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T- the type of the operand and result of the operator
- All Superinterfaces:
- Function<T,T>
- 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 UnaryOperator<T> extends Function<T,T>
Represents an operation on a single operand that produces a result of the same type as its operand. This is a specialization ofFunctionfor the case where the operand and result are of the same type.This is a functional interface whose functional method is
Function.apply(Object).- Since:
- 1.8
- See Also:
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Function
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Method Summary
All Methods Static Methods Default Methods Modifier and Type Method and Description static <T> UnaryOperator<T>identity()Returns a unary operator that always returns its input argument.
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Method Detail
identity
static <T> UnaryOperator<T> identity()
Returns a unary operator that always returns its input argument.
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