Am 10.02.2015 08:08 schrieb "Yasuo Ohgaki" <[email protected]>:
>
> One reason I would like to use __invariant() is to allow overriding
parents.
> I think we should have way for it, but I don't have good idea now.
> I'm still thinking.
Hmm, Idea... Imagine the require keyword, in the context of classes, as an
alternative to the function keyword. One could write any of these:
class foo {
require (expr); // like anonymous function. nonoverridable
static require (expr); // same for nonmethod calls
// _named_ form
require something (expr); // overrides
static require otherthing (expr); // overrides
}
This way selective overriding would be possible for individual conditions.
The namespace for these invariant expression names could / should be wholly
separate from the method namespace itself.
best regards
Patrick
