From: Nobuyoshi Nakada <nobu@...>
Date: 2009-02-14T18:49:19+09:00
Subject: Re: how to require more than one thing from the command line

Hi,

At Sat, 14 Feb 2009 16:52:12 +0900,
7stud -- wrote in [ruby-talk:328185]:
> > require separates the scope, so local variables defined outside
> > are not accessible.
> > 
> 
> 1) require?  Where, what, when?

Sorry, it was load.

> > $ ruby -e 'x=10; eval(File.read($0 = ARGV.shift), binding)' r1test.rb
> > hello
> > 10
> 
> 2) Isn't specifying 'binding' redundant unless you acquire a binding 
> from a different scope?

Just for explanation.

> 3) Why the $0 = ARGV.shift ?  This appears to work the same way:
> 
> $ ruby -e 'x=10; eval(File.read(ARGV[0]) )' r1test.rb

For the idiom, if $0 == __FILE__.

-- 
Nobu Nakada