On Wed, Jan 28, 2009 at 2:10 PM, Dag Sverre Seljebotn <[email protected]> wrote: > I recently got bitten by this: > > cdef int i > cdef unsigned n = 3 > for i in range(-n, n): > ... > > Here, the loop will never be run. > > I first submitted http://trac.cython.org/cython_trac/ticket/184 which > was invalid, but I have another proposal: > > Can we let the type of the parameters to the magic, optimize range > function be determined by the type of the iterator? > > So, in the example above, range would be prototyped roughly > > cdef int range(int, int) > > while if "i" had been typed as unsigned, range would behave as > > cdef int range(unsigned, unsigned)
So if I understand correctly, the optimized range would act differently than an unoptimized range would? That seems like a bad idea, especially since the range optimization is on by default. Carl _______________________________________________ Cython-dev mailing list [email protected] http://codespeak.net/mailman/listinfo/cython-dev
