class Foo
// type is singleton type Bar.type
object Bar extends Foo {
def exc = (new Exception).printStackTrace
}
// type is structural type Foo{def exc: Unit}
val Baz = new Foo {
def exc = (new Exception).printStackTrace
}
// compare:
Bar.exc
Baz.exc
Singleton types get their own .class file. Structural types use reflection.
--j
On Tue, Dec 2, 2008 at 12:33 PM, Alex Boisvert <[EMAIL PROTECTED]> wrote:
> On Tue, Dec 2, 2008 at 10:24 AM, Jorge Ortiz <[EMAIL PROTECTED]>wrote:
>
>> If you add (non-overriden) fields to a val, they'll always be invoked via
>> reflection, which takes a performance hit. Objects, on the other hand,
>> define their own class so reflection isn't necessary.
>
>
> Can you give an example? I can't picture this from your description.
>
> alex
>
>
> >
>
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