From: Luigi Ballabio <luigi.ballabio@...>
Date: 2001-07-26T19:00:53+09:00
Subject: [ruby-talk:18564] Re: overloading [] in SWIG.i file

At 07:19 AM 7/26/01 +0900, Craig Files wrote:
>Hi,
>
>   Another SWIG question:  I would like to overload the [] operator in my
>SWIG.i file

You'll have to use Python conventions for special method names. They will 
be mapped to the right Ruby methods, namely:

Python:        Ruby:
__getitem__    []
__setitem__    []=
__len__        length
__str__        to_s
__cmp__        <=>
__add__        +
__sub__        -
__mul__        *
__div__        /
__call__       call

There might be others which I don't remember, though.
I'm including your updated example below.

Bye,
         Luigi

%module StringVector
%{
#include <vector>
#include "StringVector.h"
%}

class StringVector {
public :
   StringVector();
   ~StringVector();
   void push_back(char *);
   char *back();
   char *front();
   int   size();
};

%addmethods StringVector {
   char *__getitem__(int index) {
     return (*self)[index];
   }

   void __setitem__(int index, char *value) {
     (*self)[index] = value;
   }
}