From: Urabe Shyouhei <shyouhei@...>
Date: 2010-07-22T16:58:09+09:00
Subject: Re: finding last line in a file

(2010/07/22 15:35), Robert Klemme wrote:
> On 07/22/2010 07:10 AM, Urabe Shyouhei wrote:
>> (2010/07/22 14:08), Urabe Shyouhei wrote:
>>> Take a look at the doc for File.readline.
>>
>> Oops... typo.  I meant readlines.  With it you can do something like
>> File.readlines(f).last
> 
> This is as inefficient as using File.foreach because it will read the
> whole file.  I believe Ted was looking for a more efficient solution.

Then how about:

File.open(f).each_line.inject(nil){|x,y|y}

Slower than my first answer though.