OneOfN.None (formcycle: bom 8.2.0 API)

java.lang.Object
- de.xima.fc.common.data.algebraic.OneOfN
- - de.xima.fc.common.data.algebraic.OneOfN.None

All Implemented Interfaces:

Serializable

Enclosing class:

OneOfN
```
public static final class OneOfN.None
extends OneOfN
```
Emulates a sum type consisting of 0 cases.

See Also:

Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from class de.xima.fc.common.data.algebraic.OneOfN
  OneOfN.Either<T1,T2>, OneOfN.EitherMatcher<R,T1,T2>, OneOfN.Just<T1>, OneOfN.JustMatcher<R,T1>, OneOfN.None, OneOfN.NoneMatcher<R>, OneOfN.OneOf3<T1,T2,T3>, OneOfN.OneOf3Matcher<R,T1,T2,T3>, OneOfN.OneOf4<T1,T2,T3,T4>, OneOfN.OneOf4Matcher<R,T1,T2,T3,T4>, OneOfN.OneOf5<T1,T2,T3,T4,T5>, OneOfN.OneOf5Matcher<R,T1,T2,T3,T4,T5>

Field Summary
- Fields inherited from class de.xima.fc.common.data.algebraic.OneOfN
  choice, value

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Void`	`getValue()`	Checks which case applies and returns the value for that case.
`static OneOfN.None`	`instance()`
`<R> R`	`match()`	Performs a case match on this sum type by invoking the mapping function for the matching case with the value of this sum type and returning the result.
`<R> R`	`match(R defaultValue, OneOfN.NoneMatcher<R> matcher)`	Performs a case match on this sum type by invoking the mapping function for the matching case with the value of this sum type and returning the result.

Methods inherited from class de.xima.fc.common.data.algebraic.OneOfN
equals, getChoice, hashCode, is, select

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - getValue
```
public Void getValue()
```
    Description copied from class: OneOfN
    
    Checks which case applies and returns the value for that case. You need to cast it yourself to the required type.
    
    Overrides:
    
    getValue in class OneOfN
    
    Returns:
    
    The value of this sum type.
  - match
```
public <R> R match()
```
    Performs a case match on this sum type by invoking the mapping function for the matching case with the value of this sum type and returning the result.
    
    Type Parameters:
    
    R - Type of the result returned by each mapping function.
    
    Returns:
    
    The value returned by the mapping function for the matching case.
  - match
```
public <R> R match(R defaultValue,
                   OneOfN.NoneMatcher<R> matcher)
```
    Performs a case match on this sum type by invoking the mapping function for the matching case with the value of this sum type and returning the result.
    
    Type Parameters:
    
    R - Type of the result returned by each mapping function.
    
    Parameters:
    
    defaultValue - Value returned when the given matcher has no matching case.
    
    matcher - Matcher object for each case.
    
    Returns:
    
    The value returned by the mapping function for the matching case.
  - instance
```
public static OneOfN.None instance()
```
    Returns:
    
    The single instance of this bottom type.