I think I'll go for the first code example I gave. It looks like the clearest version.
On Fri, Oct 10, 2008 at 1:02 AM, Robert Bradshaw <[EMAIL PROTECTED]> wrote: > On Oct 10, 2008, at 12:28 AM, Aaron DeVore wrote: > >> Tragically, I can't show my implementation of __eq__. However, I will >> say this: I absolutely cannot change __eq__ to work with identities. >> >> For a relatively short list (usually 0-20 items, sometimes up to 1000) >> would this work and still be blindingly fast? "----" indicates >> indentation.: >> >> int index >> for index from 0 <= index < len(a_list): >> ----if a_list[index] is my_type_instance: >> --------break > > This will compare on identity, if that's what you want then it should > be quite fast. > >> Or would I need to do this to get correct behavior: >> int index >> for index from 0 <= index < len(a_list): >> ----if id(a_list[index]) == id(my_type_instance): >> --------break > > This is essentially how list.index() is implemented. > >> >> 2008/10/9 Lisandro Dalcin <[EMAIL PROTECTED]>: >>> On Wed, Oct 8, 2008 at 4:15 PM, Aaron DeVore >>> <[EMAIL PROTECTED]> wrote: >>>> I have a my_type.__eq__ >>>> function but it doesn't give the correct behavior. Which behavior >>>> does >>>> Cython use? >>> >>> Could you show us the way you implemented your __eq__ method? >>> >>> >>> >>> -- >>> Lisandro Dalcín >>> --------------- >>> Centro Internacional de Métodos Computacionales en Ingeniería (CIMEC) >>> Instituto de Desarrollo Tecnológico para la Industria Química (INTEC) >>> Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) >>> PTLC - Güemes 3450, (3000) Santa Fe, Argentina >>> Tel/Fax: +54-(0)342-451.1594 >>> _______________________________________________ >>> Cython-dev mailing list >>> [email protected] >>> http://codespeak.net/mailman/listinfo/cython-dev >>> >> _______________________________________________ >> Cython-dev mailing list >> [email protected] >> http://codespeak.net/mailman/listinfo/cython-dev > > _______________________________________________ > Cython-dev mailing list > [email protected] > http://codespeak.net/mailman/listinfo/cython-dev > _______________________________________________ Cython-dev mailing list [email protected] http://codespeak.net/mailman/listinfo/cython-dev
