| Interface | Description |
|---|---|
| Optional<T> |
An optional value.
|
| Class | Description |
|---|---|
| Absent<T> |
An
Optional value that's never present. |
| First<T> |
The first value of an
Iterable. |
| NullSafe<T> |
An
Optional that's not present if the given value is null. |
| Present<T> |
A special
Optional that's always present. |