Re: [Boost-users] [boost.python] use of multi_array in python

Sebastien Fortier wrote:

Thank you very much Daniel!

I had another question, is it possible to use multi_array and const_multi_array_ref together in python. What I mean is, if I create a multi_array from python through my c++ functions and I want to pass this array to another c++ function that uses a const_multi_array_ref how do I manage this in the interface file? is this possible?

I added class_

...

("const_multi_array_2d_ref"); to my interface file but the types seem to be incompatible.

You need to let Boost.Python know that the types are convertible: implicitly_convertible< multi_array , multi_array_ref

();

implicitly_convertible< multi_array , const_multi_array_ref

();

Should do it. See http://www.boost.org/libs/python/doc/v2/implicit.html.

I would prefer to use the const_multi_array_ref with the multi_arrays to avoid copies...

If you already have multi_array's, why don't you just pass them by reference? -- Daniel Wallin