All Superinterfaces:

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

See Also:

ExceptionHandler.fromDoubleToIntFunction(DoubleToIntFunction), DoubleToIntFunction

Method Summary

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

- Method Detail
  - apply
```
OptionalInt apply(double value)
```
    Variation of DoubleToIntFunction.applyAsInt(double) that returns OptionalInt. If this OptionalDoubleToIntFunction is obtained from ExceptionHandler.fromDoubleToIntFunction(DoubleToIntFunction), the OptionalInt will be empty only if the underlying DoubleToIntFunction throws. Otherwise the returned OptionalInt just wraps the return value of underlying DoubleToIntFunction.
    
    Specified by:
    
    apply in interface DoubleFunction<OptionalInt>
    
    Parameters:
    
    value - see DoubleToIntFunction.applyAsInt(double)
    
    Returns:
    
    OptionalInt typically wrapping return value of DoubleToIntFunction.applyAsInt(double), or an empty OptionalInt (typically signifying an exception)
    
    See Also:
    
    ExceptionHandler.fromDoubleToIntFunction(DoubleToIntFunction), DoubleToIntFunction.applyAsInt(double)
  - orElse
```
default DoubleToIntFunction orElse(int result)
```
    Converts this OptionalDoubleToIntFunction to plain DoubleToIntFunction using default value. The returned DoubleToIntFunction 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 DoubleToIntFunction that either unwraps OptionalInt or returns default value
    
    See Also:
    
    orElseGet(IntSupplier), OptionalInt.orElse(int)
  - orElseGet
```
default DoubleToIntFunction orElseGet(IntSupplier source)
```
    Converts this OptionalDoubleToIntFunction to plain DoubleToIntFunction using fallback IntSupplier. The returned DoubleToIntFunction 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 DoubleToIntFunction that either unwraps OptionalInt or falls back to source
    
    See Also:
    
    orElse(int), OptionalInt.orElseGet(IntSupplier)

Interface OptionalDoubleToIntFunction

Method Summary

Method Detail

apply

orElse

orElseGet