From: killy-kun <killy-kun@...>
Date: 2006-03-20T22:43:49+09:00
Subject: swig, c++, use string

I would like to use the c++ string type as a parameter of function 
return of some c++ functions used in a ruby module, made with swig.

Here is a simple example I tried to use the string type :

#-----------------
%module str

%inline %{

// pour tester les string

#include <string>

using namespace std;

string fctBidon (string s)
{
	string res;
	res = s + " salt bidon";
	return res;
}

string bidon()
{
	string res = "bouh";
	return res;
}

%}
#-----------------

But when I use it, here are the errors I get :

#-----------------
[eurubyt:24] bidon
  ==> #<SWIG::TYPE_p_string:0xb7f080e0>
[eurubyt:25] bidon.class
  ==> SWIG::TYPE_p_string
[eurubyt:26] fctBidon("bb")
TypeError: in method 'fctBidon', argument 1 of type 'string'
         from (irb):26:in `fctBidon'
         from (irb):26
#-----------------

That means the c++ string type isn't considered as the ruby String class...

Anybody knows how I can make this work ? I would like the c++ string 
type to be considered as the ruby String class...