From: Joel VanderWerf <vjoel@...>
Date: 2008-04-11T05:44:07+09:00
Subject: Re: performance tips

Vince Forgetta wrote:
> Hi all,
> 
> I've been using ruby for about 2 years, but only recently got around trying
> and learning it well.
> 
> Is there some central repository I can get performance tips/discussions such
> as the one posted here:
> 
> http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/158212

Instead of:

lines = File.readlines('sometextfile').each {|l| l.chomp!}

do this:

lines = File.open "test" do |f|
   f.map {|line| line.chomp}
end

That saves you from having the large string returned by #readlines.

Sorry, no idea if these tips are collected somewhere. The rubygarden 
wiki used to have them, IIRC, but it got killed by spam.

-- 
       vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407