Nice ! ... is this committed anywhere?
On Nov 28, 4:57 am, "Jorge Ortiz" <[EMAIL PROTECTED]> wrote:
> Folks,
>
> First, I've deprecated the containsClass method in ClassHelpers. It was only
> being used once in the entire Lift codebase, and it was basically equivalent
> to a very short call to List.exists. If you're using containsClass and have
> some objection to using List.exists instead, let me know and I'll
> undeprecate it, but otherwise I see no good reason to keep it around.
>
> Second, I've updated some of the stuff in net.liftweb.util to take advantage
> of Scala's new Manifests, which provide a cleaner interface. The older
> methods using Class[C] should still be there and work as they did before.
>
> For example, Cans have an "isA" method that takes a Class and returns a Full
> can if the contents of the Can can be cast to that class, or Empty
> otherwise. To illustrate:
>
> abstract class Base
> case object Derived extends Base
> case object Incompatible extends Base
>
> Ful(Derived).isA(classOf[Base]) // returns a Full[Base]
> Full(Derived).isA(classOf[Incompatible]) // returns an Empty
> Empty.isA(classOf[Base]) // returns Empty
>
> The new method is called "asA", and has a sligtly different (cleaner)
> interface:
>
> Full(Derived).asA[Base] // returns a Full[Base]
> Full(Derived).asA[Incompatible] // returns an Empty
> Empty.asA[Base] // returns an Empty
>
> Likewise, the findClass methods in ClassHelpers take a Class[C] to which the
> found class must conform. There are now new findType methods which don't
> require the Class[C], just a type annotation. So instead of:
>
> findClass(name, where, classOf[CometActor])
>
> You can now do:
>
> findType[CometActor](name, where)
>
> There were some methods private to Lift that I migrated as well, but those
> shouldn't affect your apps.
>
> Thanks,
>
> --j
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