FWIW, C# requires that you mark overridable functions *virtual*, the opposite of Java where you need to mark un-overridable functions *final*. The Scala community is coming to the same conclusion that unrestricted overriding is pretty dangerous. It's similar to monkey patching, with all the convenience and danger it provides.
On Tue, Mar 11, 2014 at 2:15 PM, Maciej Piechotka <uzytkown...@gmail.com>wrote: > On Tue, 2014-03-11 at 13:44 -0700, Patrick Walton wrote: > > On 3/11/14 1:42 PM, Daniel Micay wrote: > > > Existing object systems like COM, DOM and gobject are worth looking at, > > > but Rust shouldn't bend over backwards to support them. They're legacy > > > technologies and while interacting with them is important, I don't > think > > > it should result in any extra complexity being added to Rust. > > > > We have to support the technologies that are in use in a pleasant way, > > or else Rust will not be practical. Regardless of your feelings about > > existing OO systems, Rust has to support them well. > > > > So far nobody in this thread has demonstrated an understanding of the > > constraints here. Traits are simply not sufficient to model the DOM, for > > example. > > > > Patrick > > > > > > Could you elaborate on DOM? I saw it referred a few times but I haven't > seen any details. I wrote simple bindings to libxml2 dom > (https://github.com/uzytkownik/xml-rs - warning - I wrote it while I was > learning ruby) and I don't think there was a problem of OO - main > problem was mapping libxml memory management and rust's one [I gave up > with namespaces but with native rust dom implementation it would be > possible to solve in nicer way]. Of course - I might've been at too > early stage. > > Regarding existing OO systems - Haskell interops with few of them (like > gtk+ for example) using typeclasses without problems I know of. Possible > next stage would be modelling the same hierarchy but since most systems > use multiple inheritance in one form or another it would not help much. > > Best regards > > _______________________________________________ > Rust-dev mailing list > Rust-dev@mozilla.org > https://mail.mozilla.org/listinfo/rust-dev > >
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