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Michel Dupront | 2 Aug 2012 15:23
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class template with a template constructor


Hello,

 I just cannot swig to python the following piece of code.
The issue is the template constructor. 

template <class T>
class Foo
{
 template <class P> Foo( P p, ... ) ....
}

Any help would be very much appreciated.
Thanks in advance.
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William S Fulton | 2 Aug 2012 21:44
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Re: class template with a template constructor

On 02/08/12 14:23, Michel Dupront wrote:
>
> Hello,
>
> I just cannot swig to python the following piece of code.
> The issue is the template constructor.
>
> template <class T>
> class Foo
> {
> template <class P> Foo( P p, ... ) ....
> }
>

Look for conversion constructor in docs at 
http://www.swig.org/Doc2.0/SWIGPlus.html#SWIGPlus_nn30

%inline %{
template <class T>
class Foo
{
public:
    template <class P> Foo(P p) {}
};
%}

%extend Foo<int> {
   %template() Foo::Foo<double>;
}

%template(FooInt) Foo<int>;

You can give a name if you like in the first %template.

William

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Michel Dupront | 3 Aug 2012 09:56
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Re: class template with a template constructor

Thank for your answer.

It is working fine with a P template member function if the constructor
does not depend on the P template.
But I cannot make it work when the constructor depends on the
P template.
It goes through the compilation, ...
but when I tried an instantiation I have an error message telling me
"AttributeError: No constructor defined"



> Date: Thu, 2 Aug 2012 20:44:47 +0100
> From: wsf <at> fultondesigns.co.uk
> To: michel.dupront <at> hotmail.fr
> CC: swig-user <at> lists.sourceforge.net
> Subject: Re: [Swig-user] class template with a template constructor
>
> On 02/08/12 14:23, Michel Dupront wrote:
> >
> > Hello,
> >
> > I just cannot swig to python the following piece of code.
> > The issue is the template constructor.
> >
> > template <class T>
> > class Foo
> > {
> > template <class P> Foo( P p, ... ) ....
> > }
> >
>
> Look for conversion constructor in docs at
> http://www.swig.org/Doc2.0/SWIGPlus.html#SWIGPlus_nn30
>
> %inline %{
> template <class T>
> class Foo
> {
> public:
> template <class P> Foo(P p) {}
> };
> %}
>
> %extend Foo<int> {
> %template() Foo::Foo<double>;
> }
>
> %template(FooInt) Foo<int>;
>
> You can give a name if you like in the first %template.
>
> William
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threat landscape has changed and how IT managers can respond. Discussions 
will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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