From: Robert Klemme <shortcutter@...>
Date: 2012-07-19T00:18:30+09:00
Subject: Re: Message from user jon_r45

On Tue, Jul 17, 2012 at 4:36 PM,  <webmaster@ruby-forum.com> wrote:
> jon_r45 sent you the following message:
>
> ====================================
> Do you mind explaining to me how the code
>
> {|l| l[/^\s*([^:\s]+)/, 1]}
>
> gets me what I want.  I still don't see how the : and everything after
> it is being dropped.
> ====================================

This is a code block which is used with #map in my code snippet.  It
will convert the line into the leading portion.  The main trick here
is method String#[] with a regular expression and a group index which
selects the portion of the match to be returned.  I recommend to
decompose the code and try out individual parts in IRB so you get
familiar with how it works.

Cheers

robert


PS: Please do not ask via private email.

-- 
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