On 17 June 2012 22:16, vikas chauhan <presentisgood@gmail.com> wrote:

On 17 June 2012 15:45, <cplusplus-sig-request@python.org> wrote:

...

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Today's Topics:

1. wrapping generic getter/setter functions in boost.python (vikas chauhan) 2. Re: wrapping generic getter/setter functions in boost.python (Jonas Wielicki)

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Message: 1 Date: Sat, 16 Jun 2012 21:42:56 +0545 From: vikas chauhan <presentisgood@gmail.com> To: cplusplus-sig@python.org Subject: [C++-sig] wrapping generic getter/setter functions in boost.python Message-ID: < CAG2Q8SbD4CgEH9gx9mNj6XYArEtp5vqL_wUtfo6AiQnZCPR-Eg@mail.gmail.com> Content-Type: text/plain; charset="iso-8859-1"

Hi all, I am pretty new to boost.python and I have been getting some problems wrapping generic getter/setter functions. Say for eg. we have class like this.

class X{ int a[10]; public: int geta(int index) throw(some_exception) { if(index >= 10 || index <0) throw some_exception; return a[index]; } void seta(int index, int val) throw(some_exception) { if(index >= 10 || index < 0) throw some_exception; a[index] = value; } };

I want to add attributes like a0, a1, a2,.. a9 in my python class, wherein a0 corresponds to a[0] , a1 to a[1] and likewise. In the boost.python docs ( exposing Class properties ), getter/settter functions are documented for single value only. Is it possible to do what I want ( i.e add separate attributes using the single geta()/seta() functions ) or I need to write some kind of wrapper functions (each for accessing each a[i]) ?

i.e, what I want to do is something like this.

BOOST_PYTHON_MODULE(mymod) { using namespace boost::python;

class_<X>("X") .add_property("a0", &X::geta, &X::seta) .add_property("a1", &X::geta, &X::seta) .. .. ; }

and passing the arguments to geta ( i.e 0, 1,.. etc ) in someway.

So, basically what I want is , to avoid unnecessary code bloat.

regards, vikas