[Cppcms-users] what is the integer in url_dispatcher::asign for?

[Marcel H. <ke...@co...>]

Hello everybody,

I wonder about this method:
http://art-blog.no-ip.info/cppcms_ref_v0_99/classcppcms_1_1url__dispatcher.html#a92c984612be4b29e9e45b58cbe676f77
this is (I think) the standard url assign method everybody uses.
In the tutorial of url mapping ( 
http://cppcms.sourceforge.net/wikipp/en/page/cppcms_1x_tut_url_mapping ) 
it says: "In the fourth line we connect the regular expression 
|/number/(\d+)| to the member function |number| of |this| instance that 
receives |std::string| as parameter, and 1st captured subexpression is 
passed to it." (4: "dispatcher().assign("/number/(\\d+)", 
&hello::number, this, 1);"  )
So i now think, what happens if you put instead of a 1 a 0 to the 
method, like in the "message_board" example:
/message_board/apps/thread.cpp:174:    
dispatcher().assign(".*",&reply::prepare,this,0);

And also some times ago our chinese/japanese (?) friend csfreebird 
posted some code like this:

     dispatcher().assign("/welcome" , &kaimei_web_site::welcome , this , 
1); //first page
dispatcher().assign("/register" , &kaimei_web_site::register_client , 
this , 2); //register a new account on this page
....
     //restful web method called by Javascript form client-side
     dispatcher().assign("/send_email" , &kaimei_web_site::save_email , 
this , 7);
dispatcher().assign("/create_account?(.+)" , 
&kaimei_web_site::create_account , this , 8);

I think this is wrong, isn't it?

Hope of some clearness.

Marcel Hellwig