From: Robert Klemme <shortcutter@...>
Date: 2006-01-21T22:15:56+09:00
Subject: Re: Method definitions and Line numbers

2006/1/21, Brian Takita <brian.takita@gmail.com>:
> >
> > Check out the __FILE__ and __LINE__ constants.
>
>
> I apologize for not being clear.
>
> Lets say we have a class Test that raises an error.
>
> class Test
>     def method_with_an_error
>         raise Error
>     end
> end
>
> t = Test.new
> t.method_with_an_error
>
> Now the following error message is outputted in the command line.
>
> /home/btakita/src/scratch3.rb:3:in `method_with_an_error': Exception
> (Exception)
>     from /home/btakita/src/scratch3.rb:8
>
> How does Ruby keep track where :method_with_an_error is stored?
> Can I make a query as to where :method_with_an_error is defined?

You mean without it raising an excepption?  AFAIK there is no other
way than searching sources for the definition.  You can also use $: to
check directories in the load path.

Wait, there might be one other option: use set_trace_func at the
beginning of your script (before the first require) and record all
class and method definitions.

Kind regards

robert

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