From: John Morrice <spoon@...>
Date: 2010-12-08T07:32:11+09:00
Subject: Re: Using something like 'load' on IO Stream ?

> Tony Arcieri wrote
> > eval
> 
> I would prefer another solution.
> Lucas

eval is going to be the least computationally expensive, most portable,
most reliable, most obvious and easiest way to do this.  But it isn't
the only way!

Given:

cmd = "\"puts 'hello world'\""

You could:

system "ruby -e #{cmd}"

or:

system "echo #{cmd} | ruby"

Or if you were to do this:

f = File.open "cmd.rb", "w"
f.write "puts 'hello world!'"
f.close

You could do:

system "ruby cmd.rb"

Or even better:

load "cmd.rb"

You might think I'm crazy but sometimes I store all my ruby programs in
text files!

Johnny