All Superinterfaces:

IntFunction<OptionalLong>

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

See Also:

ExceptionHandler.fromIntToLongFunction(IntToLongFunction), IntToLongFunction

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`OptionalLong`	`apply(int value)`	Variation of `IntToLongFunction.applyAsLong(int)` that returns `OptionalLong`.
`default IntToLongFunction`	`orElse(long result)`	Converts this `OptionalIntToLongFunction` to plain `IntToLongFunction` using default value.
`default IntToLongFunction`	`orElseGet(LongSupplier source)`	Converts this `OptionalIntToLongFunction` to plain `IntToLongFunction` using fallback `LongSupplier`.

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

Interface OptionalIntToLongFunction

Method Summary

Method Detail

apply

orElse

orElseGet