From: Vell <lovell.mcilwain@...>
Date: 2008-02-06T01:39:57+09:00
Subject: Re: String scanning woes :(

On Feb 5, 7:20 am, William James <w_a_x_...@yahoo.com> wrote:
> On Feb 5, 3:52 am, Robert Klemme <shortcut...@googlemail.com> wrote:
>
> > require 'set'
> > addresses = Set.new
>
> > File.foreach "data.txt" do |line|
> >   line.chomp!
> >   line.downcase!
>
> >   puts "Duplicate: #{line}" unless addresses.add? line
> > end
>
> h = {}
> File.foreach("data"){|e|
>   e = e.strip.upcase
>   puts "Duplicate: #{ e }"   if h.include? e
>   h[ e ] = true
>
> }

Thanks guys for all the helpful hints.