From: "Mehr, Assaph (Assaph)" <assaph@...>
Date: 2004-09-17T16:40:33+09:00
Subject: Re: Debugging wxruby programs.


> Yes, I've installed both ruby and wxruby. The problem I have is that
> if the app fails to start, it is sometimes due to syntax errors and
> sometimes due to runtime errors (e.g. a nil member variable, etc.).
> Without a DOS/Command window, firstly, I've no idea if it's a syntax
> error, 

Syntax errors are always reported by the Ruby parser, nothing to do with
wxRuby. If you have a syntax error you will get the appropriate message
when you load the file.

> secondly, even if it does start, I can't use 'print' to print
> out debugging statements to help me find out where I got to and what
> went wrong (OK, I can open an auxilliary window and write to that, but
> I could lose that window if the app dies). 

That sounds weird. I have no problem writing to stdout from within a
wxRuby app. In fact I used it frequently until I integrated Log4R in the
app.
What is your setup (os/ruby/wxruby versions etc)?


> How do you experts debug wxruby apps? Any help would be appreciated.

As mentioned, Log4R is invaluable. I also sometimes use Florian Gross's
breakpoint module [ruby-talk:111523].