From: Josh Cheek <josh.cheek@...>
Date: 2011-09-14T22:52:56+09:00
Subject: Re: Using a loop to run similar commands

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On Wed, Sep 14, 2011 at 7:22 AM, dwight schrute <spambocks@yahoo.ca> wrote:

> I actually played around a bit and then did this:
>
> 1.upto(12) do
>  |i| eval "create#{i} = agent.get(t#{i})"
> end
>
> --
> Posted via http://www.ruby-forum.com/.
>
>
In the same way that you can store a variable named "create1" in your local
binding, you can store it in a hash, or you can use indexes rather than
suffixes and store it in an array. This is safer (you can't accidentally
execute arbitrary code), faster (you don't have to parse source code), much
more robust (arrays and hashes are used everywhere, but it would be a
nightmare to pass bindings all over the place, evaling on them to get the
values you need).

Please check out my above example again, or check out hashes.

In Ruby Kickstart, we talk about Arrays in session 2
http://ruby-kickstart.com/#session2 and Hashes in session 3
http://ruby-kickstart.com/#session3

We might go a bit quick for a beginner, I'm not sure, but seeing the
examples might be helpful.

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