From: Joe Van Dyk <joevandyk@...>
Date: 2005-07-18T22:40:57+09:00
Subject: Re: ] Re: Ruby has ruined my Java (was Re: Ruby has ruined my C++)

On 7/17/05, Lothar Scholz <mailinglists@scriptolutions.com> wrote:
> Hello tony,
> 
> ts> in tcl/tk you can use this to create a button
> 
> ts> button .b -text "quit" -command {exit}
> ts> pack .b
> 
> ts> i'd really like something like this for ruby (off the top of my head):
> 
> ts> class  quit_button < button
> 
> ts>        def initalize
> ts>            button_text("quit")
> ts>            self.show
> ts>            placeongrid()
> ts>            # you get the idea
> ts>        end
> 
> ts>        def button_text(t)
> ts>            quit_text=t
> ts>        end
> 
> ts>        def click
> ts>            app.cleanup
> ts>        end
> ts> end
> 
> Inheritance just for the purpose to add callbacks/configuration
> already proved to be wrong a long time ago. The only framework which
> tried this was self, but as self is OO without classes it's not
> comparable.
> 
> From the length of your example you should see where the problem is.

It is?  Most ruby-gnome2 and gtkmm (c++ interface to gtk) examples use
inheritance.

I generally try to use composition instead, but it's sometimes a lot
simpler to use inheritance, especially if it's just a quick
application.