All Superinterfaces:

Supplier<OptionalDouble>

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 OptionalDoubleSupplier
extends Supplier<OptionalDouble>
```
Variation of DoubleSupplier that returns OptionalDouble instead of the raw value. OptionalDoubleSupplier is typically obtained from ExceptionHandler.fromDoubleSupplier(DoubleSupplier), in which case its return value is empty when the underlying DoubleSupplier throws an exception. See noexception tutorial.

See Also:

ExceptionHandler.fromDoubleSupplier(DoubleSupplier), DoubleSupplier

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`OptionalDouble`	`get()`	Variation of `DoubleSupplier.getAsDouble()` that returns `OptionalDouble`.
`default DoubleSupplier`	`orElse(double result)`	Converts this `OptionalDoubleSupplier` to plain `DoubleSupplier` using default value.
`default DoubleSupplier`	`orElseGet(DoubleSupplier source)`	Converts this `OptionalDoubleSupplier` to plain `DoubleSupplier` using fallback `DoubleSupplier`.

- Method Detail
  - get
```
OptionalDouble get()
```
    Variation of DoubleSupplier.getAsDouble() that returns OptionalDouble. If this OptionalDoubleSupplier is obtained from ExceptionHandler.fromDoubleSupplier(DoubleSupplier), the OptionalDouble will be empty only if the underlying DoubleSupplier throws. Otherwise the returned OptionalDouble just wraps the return value of underlying DoubleSupplier.
    
    Specified by:
    
    get in interface Supplier<OptionalDouble>
    
    Returns:
    
    OptionalDouble typically wrapping return value of DoubleSupplier.getAsDouble(), or an empty OptionalDouble (typically signifying an exception)
    
    See Also:
    
    ExceptionHandler.fromDoubleSupplier(DoubleSupplier), DoubleSupplier.getAsDouble()
  - orElse
```
default DoubleSupplier orElse(double result)
```
    Converts this OptionalDoubleSupplier to plain DoubleSupplier using default value. The returned DoubleSupplier will unwrap present value from the OptionalDouble if possible, or return result if the OptionalDouble is empty.
    
    Parameters:
    
    result - default value to return instead of an empty OptionalDouble
    
    Returns:
    
    plain DoubleSupplier that either unwraps OptionalDouble or returns default value
    
    See Also:
    
    orElseGet(DoubleSupplier), OptionalDouble.orElse(double)
  - orElseGet
```
default DoubleSupplier orElseGet(DoubleSupplier source)
```
    Converts this OptionalDoubleSupplier to plain DoubleSupplier using fallback DoubleSupplier. The returned DoubleSupplier will unwrap present value from the OptionalDouble if possible, or fall back to calling source if the OptionalDouble is empty.
    
    Parameters:
    
    source - DoubleSupplier to query for fallback value when OptionalDouble is empty
    
    Returns:
    
    plain DoubleSupplier that either unwraps OptionalDouble or falls back to source
    
    See Also:
    
    orElse(double), OptionalDouble.orElseGet(DoubleSupplier)

Interface OptionalDoubleSupplier

Method Summary

Method Detail

get

orElse

orElseGet