Les, everyone is correct in stating there are inherent problems (or issues to be aware of) with multiple inheritance. However, it is certainly handy when you really need it (and know what to be careful of). Again, feel free to check out the inheritance model I use ( http://www.someelement.com/2007/03/multiple-inheritance-with-prototypejs.html), as it does support multiple inheritance as well. There are also some issues I have with the whole "prototype-static, instance" methods vs. "true instance only" methods, so I do away completely with forcing references to the superclass methods. You need to call a superclass method within an overridden subclass method - just grab the reference on your own (explained in that blog post).
The prototype-core team's job is to handle at least 85% of people's needs. AFAIK the new inheritance stuff achieves that (though using my model I will have no needs for it)... we just need to keep in mind that if we run into our own needs, or edge cases, we can mod away (just remember to do it smartly to not break your upgrade path). On 9/22/07, Nicolás Sanguinetti <[EMAIL PROTECTED]> wrote: > > > On 9/22/07, Les <[EMAIL PROTECTED]> wrote: > > The OpenLayers API 2.5 (a maping API in part based on Prototype) > > supports multiple inheritance, so why not Prototype? > > Mislav said: > > Also, multiple inheritance isn't all that good. There is a reason Java > and > > C++ successors like Objective-C and C# chose not to support it. > JavaScript > > 2.0 looks like it will not support it either. > > So, it's a design goal not to have multiple inheritance. > > Besides, we all heard "composition is better than inheritance" :) > Instead of rigidly inheriting from multiple sources, just delegate > behavior to other objects. It's *that* simple. And it's effective too > ;) > > Or use dojo, or OpenLayers, or whatever else you fancy :) > > Best, > -Nicolas > > > > -- Ryan Gahl Manager, Senior Software Engineer Nth Penguin, LLC http://www.nthpenguin.com -- Architect WebWidgetry.com / MashupStudio.com Future Home of the World's First Complete Web Platform -- Inquire: 1-262-951-6727 Blog: http://www.someElement.com LinkedIn Profile: http://www.linkedin.com/in/ryangahl --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Prototype: Core" group. To post to this group, send email to prototype-core@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/prototype-core?hl=en -~----------~----~----~----~------~----~------~--~---
