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 OptionalLongBinaryOperator
```
Variation of LongBinaryOperator that returns OptionalLong instead of the raw value. OptionalLongBinaryOperator is typically obtained from ExceptionHandler.fromLongBinaryOperator(LongBinaryOperator), in which case its return value is empty when the underlying LongBinaryOperator throws an exception. See noexception tutorial.

See Also:

ExceptionHandler.fromLongBinaryOperator(LongBinaryOperator), LongBinaryOperator

Method Summary

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

- Method Detail
  - apply
```
OptionalLong apply(long left,
                   long right)
```
    Variation of LongBinaryOperator.applyAsLong(long, long) that returns OptionalLong. If this OptionalLongBinaryOperator is obtained from ExceptionHandler.fromLongBinaryOperator(LongBinaryOperator), the OptionalLong will be empty only if the underlying LongBinaryOperator throws. Otherwise the returned OptionalLong just wraps the return value of underlying LongBinaryOperator.
    
    Parameters:
    
    left - see LongBinaryOperator.applyAsLong(long, long)
    
    right - see LongBinaryOperator.applyAsLong(long, long)
    
    Returns:
    
    OptionalLong typically wrapping return value of LongBinaryOperator.applyAsLong(long, long), or an empty OptionalLong (typically signifying an exception)
    
    See Also:
    
    ExceptionHandler.fromLongBinaryOperator(LongBinaryOperator), LongBinaryOperator.applyAsLong(long, long)
  - orElse
```
default LongBinaryOperator orElse(long result)
```
    Converts this OptionalLongBinaryOperator to plain LongBinaryOperator using default value. The returned LongBinaryOperator 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 LongBinaryOperator that either unwraps OptionalLong or returns default value
    
    See Also:
    
    orElseGet(LongSupplier), OptionalLong.orElse(long)
  - orElseGet
```
default LongBinaryOperator orElseGet(LongSupplier source)
```
    Converts this OptionalLongBinaryOperator to plain LongBinaryOperator using fallback LongSupplier. The returned LongBinaryOperator 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 LongBinaryOperator that either unwraps OptionalLong or falls back to source
    
    See Also:
    
    orElse(long), OptionalLong.orElseGet(LongSupplier)

Interface OptionalLongBinaryOperator

Method Summary

Method Detail

apply

orElse

orElseGet