All Superinterfaces:

IntFunction<OptionalInt>

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 OptionalIntUnaryOperator
extends IntFunction<OptionalInt>
```
Variation of IntUnaryOperator that returns OptionalInt instead of the raw value. OptionalIntUnaryOperator is typically obtained from ExceptionHandler.fromIntUnaryOperator(IntUnaryOperator), in which case its return value is empty when the underlying IntUnaryOperator throws an exception. See noexception tutorial.

See Also:

ExceptionHandler.fromIntUnaryOperator(IntUnaryOperator), IntUnaryOperator

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`OptionalInt`	`apply(int operand)`	Variation of `IntUnaryOperator.applyAsInt(int)` that returns `OptionalInt`.
`default IntUnaryOperator`	`orElse(int result)`	Converts this `OptionalIntUnaryOperator` to plain `IntUnaryOperator` using default value.
`default IntUnaryOperator`	`orElseGet(IntSupplier source)`	Converts this `OptionalIntUnaryOperator` to plain `IntUnaryOperator` using fallback `IntSupplier`.

- Method Detail
  - apply
```
OptionalInt apply(int operand)
```
    Variation of IntUnaryOperator.applyAsInt(int) that returns OptionalInt. If this OptionalIntUnaryOperator is obtained from ExceptionHandler.fromIntUnaryOperator(IntUnaryOperator), the OptionalInt will be empty only if the underlying IntUnaryOperator throws. Otherwise the returned OptionalInt just wraps the return value of underlying IntUnaryOperator.
    
    Specified by:
    
    apply in interface IntFunction<OptionalInt>
    
    Parameters:
    
    operand - see IntUnaryOperator.applyAsInt(int)
    
    Returns:
    
    OptionalInt typically wrapping return value of IntUnaryOperator.applyAsInt(int), or an empty OptionalInt (typically signifying an exception)
    
    See Also:
    
    ExceptionHandler.fromIntUnaryOperator(IntUnaryOperator), IntUnaryOperator.applyAsInt(int)
  - orElse
```
default IntUnaryOperator orElse(int result)
```
    Converts this OptionalIntUnaryOperator to plain IntUnaryOperator using default value. The returned IntUnaryOperator will unwrap present value from the OptionalInt if possible, or return result if the OptionalInt is empty.
    
    Parameters:
    
    result - default value to return instead of an empty OptionalInt
    
    Returns:
    
    plain IntUnaryOperator that either unwraps OptionalInt or returns default value
    
    See Also:
    
    orElseGet(IntSupplier), OptionalInt.orElse(int)
  - orElseGet
```
default IntUnaryOperator orElseGet(IntSupplier source)
```
    Converts this OptionalIntUnaryOperator to plain IntUnaryOperator using fallback IntSupplier. The returned IntUnaryOperator will unwrap present value from the OptionalInt if possible, or fall back to calling source if the OptionalInt is empty.
    
    Parameters:
    
    source - IntSupplier to query for fallback value when OptionalInt is empty
    
    Returns:
    
    plain IntUnaryOperator that either unwraps OptionalInt or falls back to source
    
    See Also:
    
    orElse(int), OptionalInt.orElseGet(IntSupplier)

Interface OptionalIntUnaryOperator

Method Summary

Method Detail

apply

orElse

orElseGet