A modern programming language that makes developers happier.

kotlinlang

java interface:
```public interface EntityRepository {

	&lt;E extends BaseEntity, ID extends Serializable&gt; ID persist(E entity);
}```

kotlin use:
```val myEntity: MyEntity = ... // MyEntity extends BaseEntity&lt;
entityRepository.persist(myEntity)```
error:
```Type inference failed: Not enough information to infer parameter ID in fun &lt;E : BaseEntity!, ID : Serializable!&gt; persist(entity: E!): ID!
Please specify it explicitly.```
In Java works without problem.