From: Robert Klemme <bob.news@...>
Date: 2005-12-28T06:37:54+09:00
Subject: Re: Variable Dump

Dan Smorey Jr. <dsmorey@gmail.com> wrote:
> I'd like to know how to grab a dump of all variable associated with a
> script.  Here is a test script I am using...
>
> #!/usr/bin/env ruby
>
>   class Binding
>     def info_locals()
>       vars = eval("local_variables", self)
>       vars.each { |v| puts %(#{v} --> #{eval(v, self).inspect}) }
>     end
>   end
>
>   def foo_def
>     inside_foo_def = "hello there"
>     binding.info_locals
>   end
>
> foo = 'hello'
> bar = "goodbye"
> array = [ 'one', 'two' ]
>
> foo_def()
>
> I get this output...
>
> inside_foo_def --> "hello there"
>
> That's the problem.  I do not get all variables, just the variable in
> the def foo_def scope.  I'd like to be able to grab foo, bar, and
> array also, much like this...
>
> inside_foo_def --> "hello there"
> foo --> "hello"
> bar --> "bar"
> array --> ['one', 'two']
>
> Thanks in advance.

You would have to walk up the call stack to get locals of surrounding 
environments.  Kernel.set_trace_func may help here.

Kind regards

    robert