Rewrote traits tour #713
Rewrote traits tour #713
Conversation
| Similar to interfaces in Java, traits are used to define object types by specifying the signature of the supported methods. Like in Java 8, Scala allows traits to be partially implemented; i.e. it is possible to define default implementations for some methods. In contrast to classes, traits may not have constructor parameters. | ||
| Here is an example: | ||
|
|
||
| Traits are used to share interfaces and fields between classes. They are similar Java 8's interfaces. Classes and objects can extends traits but traits cannot be instantiated. |
There was a problem hiding this comment.
similar -> similar to
can extends -> can extend
|
Thought (I have no solid opinion on this): Shouldn't examples in Scala Tour focus more on functional/immutable code, than imperative/mutable code? I think there should be an example that demonstrates inheritance from more than one trait (or else, why not just use an abstract class). |
the next section of the tour is http://docs.scala-lang.org/tutorials/tour/mixin-class-composition.html, but a PR adding a forward reference would be welcome. (I think it would even be reasonable to merge the two pages.) I agree an immutable example would be preferable, but this PR doesn't move backwards on that, at least. a separate PR with a better example would be welcome |
No description provided.