From: "David A. Black" <dblack@...>
Date: 2009-02-12T06:02:43+09:00
Subject: Re: Array uniq

On Thu, 12 Feb 2009, Stuart Little wrote:

> I am having some troubles with the uniq method for arrays. This is a
> typical example of my data set, which I want to remove the duplicates
> from.
>
> TueAug052008
> TueAug052008
> TueAug052008
> TueAug052008
>
> Its clear to see the set of data above has 4 identical values and should
> therefore only have remaining after applying array.uniq to this array.
> It has become obvious this doesn't work and uniq doesn't remove any
> duplicates it just pushes the data out as it finds it full of
> dupelictes. Is this a problem with the data set? This is my code:
>
> value= timeDone.to_s
> dateCheck.push value.gsub(/\s/, '')[0..7] + value[26..30]
>      date = dateCheck.uniq
>      @alerts.push(date)

Array#uniq does work:

>> a = Array.new(4) { "TueAug052008" }
=> ["TueAug052008", "TueAug052008", "TueAug052008", "TueAug052008"]
>> a.uniq
=> ["TueAug052008"]

So there must be something else going on. Maybe stray whitespace? How
are you determining that the operation didn't work?


David

-- 
David A. Black / Ruby Power and Light, LLC
Ruby/Rails consulting & training: http://www.rubypal.com
Coming in 2009: The Well-Grounded Rubyist (http://manning.com/black2)

http://www.wishsight.com => Independent, social wishlist management!