Very interesting.
Thanks for the tip.
Cheers,
Jan
On May 09, 2008, at 3:59 PM, Lisandro Dalcin wrote:
> I believe you are right, it seems a bug, I'v experienced this in the
> past, and there and used this fixes
>
> cdef class myTest
> def __add__(myTest self, other): # note declaration: myTest self
> return self.thisPtr.add(other)
>
> You should go on with this, It should even work when this get fixed
> (in the case this is actually a bug and I'm not missing somethig)
>
> So rename your 'plus' and 'call' to standard __add__ and __call__ with
> the declaration trick above, and all should just work.
>
> Regards,
>
>
>
> On 5/9/08, Jan Strube <[EMAIL PROTECTED]> wrote:
>>
>> Hi List,
>> sorry for the crosspost, I have also asked the question here
>> https://answers.launchpad.net/cython/+question/31930, but
>> probably the list is a better place to ask.
>>
>>
>> In the new version of Cython I am excited to report that overloading
>> operators seems to work just fine. This is great, because in the
>> high energy
>> physics community, people think it's a good idea to abuse the ()
>> operator
>> for iterators to mean next (among other nonsense).
>>
>> So I have a short class in C++, the code is below, and as posted,
>> everything
>> works fine.
>> However, when I try to change "def add(self)" to "def __add__
>> (self)" in
>> myTest I get complaints of the sort
>>
>> File "test.py", line 37, in <module>
>> print test + 3
>> File "stdMatrix.pyx", line 67, in stdMatrix.myTest.__add__
>> (stdMatrix.cpp:452)
>> return self.thisPtr.add(<int>other)
>> AttributeError: 'stdMatrix.myTest' object has no attribute 'thisPtr'
>>
>> I find this quite surprising, and could use some enlightenment. I
>> can easily
>> enough work around this, but this is a bug, no?
>>
>> Thanks for cython and best of luck on your sprint.
>> Best,
>> Jan
>>
>> ------------ class_operators.cc ---------------
>> class TEST
>> {
>> public:
>> int x;
>> TEST(int y) {x=y;}
>> int operator() () {x = 17; return x;}
>> int operator+(int y) {return x+y;}
>> int minimize() {return 25;}
>> };
>> ----------------------------------------------------------
>>
>> ------stdMatrix.pyx----------------------------------------
>> cdef extern from "class_operators.cc":
>> ctypedef struct monkey "TEST":
>> int x
>> int (*minimize)()
>> int add "operator+"(int y)
>> int call "operator()"()
>> monkey* new_Test "new TEST"(int y)
>> void del_Test "delete"(monkey* x)
>>
>> cdef class myTest:
>> cdef monkey *thisPtr
>> def __cinit__(self, int y):
>> self.thisPtr = new_Test(y)
>> def __dealloc__(self):
>> del_Test(self.thisPtr)
>> def min(self):
>> return self.thisPtr.minimize()
>> def plus(self, other):
>> return self.thisPtr.add(other)
>> def call(self):
>> return self.thisPtr.call()
>> --------------------------------------------------------------------
>>
>>
>> _______________________________________________
>> Cython-dev mailing list
>> [email protected]
>> http://codespeak.net/mailman/listinfo/cython-dev
>>
>>
>
>
> --
> 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
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