OptionalBiPredicate (NoException 1.6.1 API)

Type Parameters:

T - see BiPredicate

U - see BiPredicate

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 OptionalBiPredicate<T,U>
```
Variation of BiPredicate that returns OptionalBoolean instead of the raw value. OptionalBiPredicate is typically obtained from ExceptionHandler.fromBiPredicate(BiPredicate), in which case its return value is empty when the underlying BiPredicate throws an exception. See noexception tutorial.

See Also:

ExceptionHandler.fromBiPredicate(BiPredicate), BiPredicate

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method and Description
`default BiPredicate<T,U>`	`orElse(boolean result)` Converts this `OptionalBiPredicate` to plain `BiPredicate` using default value.
`default BiPredicate<T,U>`	`orElseGet(BooleanSupplier source)` Converts this `OptionalBiPredicate` to plain `BiPredicate` using fallback `BooleanSupplier`.
`OptionalBoolean`	`test(T t, U u)` Variation of `BiPredicate.test(Object, Object)` that returns `OptionalBoolean`.

- Method Detail
  - test
```
OptionalBoolean test(T t,
                     U u)
```
    Variation of BiPredicate.test(Object, Object) that returns OptionalBoolean. If this OptionalBiPredicate is obtained from ExceptionHandler.fromBiPredicate(BiPredicate), the OptionalBoolean will be empty only if the underlying BiPredicate throws. Otherwise the returned OptionalBoolean just wraps the return value of underlying BiPredicate.
    
    Parameters:
    
    t - see BiPredicate.test(Object, Object)
    
    u - see BiPredicate.test(Object, Object)
    
    Returns:
    
    OptionalBoolean typically wrapping return value of BiPredicate.test(Object, Object), or an empty OptionalBoolean (typically signifying an exception)
    
    See Also:
    
    ExceptionHandler.fromBiPredicate(BiPredicate), BiPredicate.test(Object, Object)
  - orElse
```
default BiPredicate<T,U> orElse(boolean result)
```
    Converts this OptionalBiPredicate to plain BiPredicate using default value. The returned BiPredicate will unwrap present value from the OptionalBoolean if possible, or return result if the OptionalBoolean is empty.
    
    Parameters:
    
    result - default value to return instead of an empty OptionalBoolean
    
    Returns:
    
    plain BiPredicate that either unwraps OptionalBoolean or returns default value
    
    See Also:
    
    orElseGet(BooleanSupplier), OptionalBoolean.orElse(boolean)
  - orElseGet
```
default BiPredicate<T,U> orElseGet(BooleanSupplier source)
```
    Converts this OptionalBiPredicate to plain BiPredicate using fallback BooleanSupplier. The returned BiPredicate will unwrap present value from the OptionalBoolean if possible, or fall back to calling source if the OptionalBoolean is empty.
    
    Parameters:
    
    source - BooleanSupplier to query for fallback value when OptionalBoolean is empty
    
    Returns:
    
    plain BiPredicate that either unwraps OptionalBoolean or falls back to source
    
    See Also:
    
    orElse(boolean), OptionalBoolean.orElseGet(BooleanSupplier)

Interface OptionalBiPredicate<T,U>

Method Summary

Method Detail

test

orElse

orElseGet