From: "Aaron D. Gifford" <astounding@...>
Date: 2011-12-04T01:02:39+09:00
Subject: Re: Is there a better way to check this array?

On Sat, Dec 3, 2011 at 5:43 AM, Isaac Sanders <isaacbfsanders@gmail.com> wrote:
> Why u no use hash?

I was wondering the same thing as Isaac.  Your data seems quite well
suited to a hash:

irb(main):001:0> names = ['sue,5', 'tom,6', 'jim,7', 'sally,8',
'fred,9', 'barney,0']
=> ["sue,5", "tom,6", "jim,7", "sally,8", "fred,9", "barney,0"]
irb(main):002:0> hashnames = Hash[names.map{|x| x.split ','}]
=> {"sue"=>"5", "tom"=>"6", "jim"=>"7", "sally"=>"8", "fred"=>"9",
"barney"=>"0"}
irb(main):003:0> hashnames.key?('fred')
=> true

Of course I understand you may have other reasons for not using a
hash.  But if your name comparisons will always be exact match
comparisons, a hash is ideally suited for quick look-up.

Aaron out.