From: Brian Candler <b.candler@...>
Date: 2010-10-04T18:17:12+09:00
Subject: Re: save only first line from string?

John Sikora wrote:
> Terry Michaels wrote:
>> Hi. What's the most simple and elegant way to remove all the contents of
>> a String except for the first line? (Assume string consist of one line,
>> multiple lines, or no lines, and assume that we don't know which OS we
>> are on.)
> 
> I don't know about the most elegant or simple way, but how about this:
> 
> string.sub!(/^(.*\n?)((?im).+)?/, '\1').chomp

Why not just this?

string.sub!(/\n.*/m, '')

Or if you are a Windows user,

string.sub!(/[\r\n].*/m, '')
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