Content added Content deleted
|
|
| Line 992: |
Line 992: |
|
|
|
|
|
=={{header|Java}}== |
|
=={{header|Java}}== |
|
⚫ |
Java has a built-in generic "Maybe" monad in form of the Optional<T> class. |
|
|
|
|
|
⚫ |
The class has static methods, "of" and "ofNullable", which act as the unit function |
| ⚫ |
|
|
|
⚫ |
for wrapping nullable and non-nullable values respectively. |
|
|
|
|
⚫ |
The class instance method, "flatMap", acts as the bind function. |
|
⚫ |
<syntaxhighlight lang="java"> |
|
import java.util.Optional; |
|
import java.util.Optional; |
|
|
|
|
|
/** |
|
| ⚫ |
* Java has a built-in generic "Maybe" monad in form of the Optional<T> class. |
|
|
* |
|
| ⚫ |
* The class has static methods, "of" and "ofNullable", which act as the unit function |
|
| ⚫ |
* for wrapping nullable and non-nullable values respectively. |
|
| ⚫ |
* The class instance method, "flatMap", acts as the bind function. * |
|
|
*/ |
|
|
public final class MonadMaybe { |
|
public final class MonadMaybe { |
|
|
|
|
