From: Josh Cheek <josh.cheek@...>
Date: 2010-06-01T19:30:03+09:00
Subject: Re: using "require" in irb, where did my variables go!?

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On Mon, May 31, 2010 at 9:23 PM, Tim Apple <timmyrunsfast@gmail.com> wrote:

> Hello,
>
> I have a somewhat basic question: lets say that in my working directory
> I have a file called my_vars.rb.
>
> It contains:
>  x = 5.0
>  puts "your variable x is #{x}"
>
> Now, I fire up irb in my command window, and type in
>  require "my_vars.rb"
>
> Which outputs, as expected,
>  your variable x is 5.0
>  => true
>
> Now, I want to access that variable again, so I enter in:
>  puts x
>
> and I get an error saying that x is undefined.  It's like it was
> temporarily there in memory, but then once it was used, it got thrown
> away!  Does anyone know how to load in a file and keep using the
> variables that were in said file?
>
> Thanks!
> --
> Posted via http://www.ruby-forum.com/.
>
>
Using globals to allow locals to talk across files seems pretty shaky. Why
do you need to be able to do this? Probably there is a better way. Perhaps
put all that code into one file. Perhaps put it into a method, and have it
return the variables of interest (you can conditionally invoke the method if
the file is required vs if the file is the primary program by comparing $0
to __FILE__)

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