From: Logan Capaldo <logancapaldo@...>
Date: 2006-05-06T04:01:00+09:00
Subject: Re: Question on self (Newbie)


On May 5, 2006, at 2:51 PM, Benjamin Pyles wrote:

> I am working my way through some tutorials and books on Ruby and i am
> trying to understand the various uses of the self object. For example
> this code from Agile rails:
>
> def self.login(name,password)
> # code here
> end
>

Here, self refers to the class
class NamedUser
   # inside here, self = NamedUser

   # we are defining a method that can be called like NamedUser.login or
   # NamedUser::login
   def self.login(...)
      ...
   end

   def try_to_login(...)
      # inside here self will be an instance of NamedUser instead of
      # NamedUser itself
   end
end

You should probably google singleton classes to really understand  
what's going on


> def try_to_login
>   User.login(self.name, self.password)
> end
>
> #Both functions belong to a class Named User
>
> Now I understand the self.name and self password reference the calling
> object. However, I am still trying to figure out why in this  
> example the
> function is prefixed with self.
>
> Ben
>
> -- 
> Posted via http://www.ruby-forum.com/.
>