Alexander Burger wrote: > Hello Cle,
Hello Alex, (...) > In terms of "beauty", there are not many options, though. I would > use: > > (put '+aClass 'ClassVar "new value") > > and perhaps write a utility function. thanks for the hint. Is there any special reason, why there is no such utility function in picoLisp for that task? I mean defining and querying helpers exists ... :-/ (...) > Yes, it depends on 'This' being bound. Ah ok, then I understood, I think :-) > BTW: There is no such thing as "the class" of an instance. There is > always a list of classes. (car (type This)) might not be the right > class, the "main" class is usually (last (type This)) while the > other classes in the list are usually "prefix" classes. I now, therefore I had hoped for a class variable setter, that would allow to update a class variable in the first class where it was found. Right so as the querying function (var:). Do you have any proposal, what such a helper/utility function should be called to fit into (var:) (var) functions that already exists? >> The only way I found working reliable (use class regardless if in >> a method send to a class or an instance) seem to be > > Note that in picoLisp there is no formal difference between objects > and classes. Objects may have local method definitions, and classes > have instance variables. So it just depends on the context, and on > what the programmer has in mind, if a symbol is regarded as an object > or as a class. Yep, like in Ruby or Smalltalk for instance ;-) I really need a counter, that is member of the class, as instance creation will increment said counter. >> (with '`*Class ...) >> >> Is this the correct way, or did I overlook something? > > I'm not sure I completely understood what you want to achieve. This > is correct, if you want to capture the current class. Again, you > could also simply use 'put' here. Hmmm ... if I do not write an utility function, I will switch to 'put' here. And yes, in this case I want to capture the current class. However, if I fiddle out, what such an utility function should look like, I will probably use that function then, instead of capturing the current class ... > Cheers, - Alex Ciao, cle. -- UNSUBSCRIBE: mailto:picol...@software-lab.de?subject=unsubscribe
