Dag Sverre Seljebotn wrote: > Stefan Behnel wrote: > >> Dag Sverre Seljebotn, 13.04.2010 09:11: >> >> >>> The argument against changing the default is simply that there is >>> another option which is much closer to Python semantics >>> >>> >> I think the "another option" bit in this sentence is at the core of our >> disagreement. My point is that incorrect input should be caught early, and >> None is incorrect (and dangerous) input in almost all cases where a typed >> value is expected. So rejecting this dangerous input should be the default. >> >> > > I'll just repeat Robert: I think the core of the disagreement is that > > def f(X x): > ... > > should correspond directly to > > def f(obj): > cdef X x = obj > > I.e., no special casing of arguments vs. other typed variables. > > This is simply because anything else is not going to be obvious to > anybody learning the language. It's seems very complicated to hold a > Cython tutorial where I have to explain that "MyType myvar" means > something else for function arguments than in local variable or class > field declarations. > > If you want to propose that > > cdef X x = None > > is also disallowed, then that's something else entirely. > > Anyway: It's 2 vs. 2 at this point and I don't see anybody changing > sides, so I hope to resign from the discussion at this point. > Actually, I overlooked Chris Barker's post in that count, sorry. And also there's getting feedback from other users in an appropriately named thread etc.
Anyway, I think we can conclude already that this is controversial enough to demand a CEP? It's been up several times in the past with the same arguments reiterated IIRC. Dag Sverre _______________________________________________ Cython-dev mailing list [email protected] http://codespeak.net/mailman/listinfo/cython-dev
