Re: [Swig-user] initializing a pointer with a reference

[Stefan Z. <sz...@gm...>]

These code examples are too incomplete for me to do much more.  If you can
provide a minimal complete test case which demonstrates the failure, I will
run it locally and try to help.

Stefan

On Wed, Jul 20, 2011 at 5:25 PM, Stefan Zager <sz...@gm...> wrote:

> What happens when you do this:
>
> self.rb_theta_expansion = RBThetaExpansion()
>
> ?
>
> Stefan
>
> On Sat, Jul 9, 2011 at 7:18 PM, Kyunghoon Lee <aer...@gm...>wrote:
>
>> Hello SWIG users,
>>
>> I'd like to know how to express a C++ code that initializes a pointer with
>> a reference to a class in Python with SWIG.  For instance, "RBEvaluation"
>> class has a pointer member "RBThetaExpansion*" as follows:
>>
>> RBThetaExpansion *     rb_theta_expansion
>>
>> In a C++ code, the pointer member is initialized with a reference to an
>> "RBThetaExpansion" class instance "rb_theta_exp" as follows:
>>
>> simple_rb_eval.rb_theta_expansion = &rb_theta_exp
>>
>> Now I'm not sure how to represent the above C++ line in Python since there
>> are no pointers or references in Python.  I simply tried
>>
>> self.rb_theta_expansion = self.rb_theta_exp
>>
>> , but I got the following error:
>>
>> Traceback (most recent call last):
>>   File "steady_cd.py", line 49, in <module>
>>     main()
>>   File "steady_cd.py", line 45, in main
>>     simple_rb_eval = SimpleRBEvaluation()
>>   File "steady_cd.py", line 34, in __init__
>>     self.rb_theta_expansion = self.rb_theta_exp
>>   File "rb_online.py", line 232, in <lambda>
>>     __setattr__ = lambda self, name, value: _swig_setattr(self,
>> RBEvaluation, name, value)
>>   File "rb_online.py", line 49, in _swig_setattr
>>     return _swig_setattr_nondynamic(self,class_type,name,value,0)
>>   File "rb_online.py", line 42, in _swig_setattr_nondynamic
>>     if method: return method(self,value)
>> TypeError: in method 'RBEvaluation_rb_theta_expansion_set', argument 1 of
>> type 'RBOnline::RBEvaluation *'
>>
>> I'd appreciate it if someone could help me with this problem.  Thank you
>> in adv.
>>
>> Regards,
>> K. Lee.
>>
>>
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>