From: Ruby Users Ruby Users <unc88@...>
Date: 2010-08-31T00:45:39+09:00
Subject: Re: A small problem for arrays

Robert Klemme wrote:
> On 21.08.2010 18:27, Jean-Julien Fleck wrote:
>> =>  [5, 6, 7]
>>       Array Difference---Returns a new array that is a copy of the
>>       original array, removing any items that also appear in other_array.
>>       (If you need set-like behavior, see the library class Set.)
>>
>>          [ 1, 1, 2, 2, 3, 3, 4, 5 ] - [ 1, 2, 4 ]  #=>   [ 3, 3, 5 ]
>>
>> Cheers,
>>
> 
> Just adding to that: if Arrays are large and / or there are frequent set
> operations needed then using class Set might yield better performance.
> 
> Kind regards
> 
>   robert

-- Just adding to that: if Arrays are large and / or there are frequent 
set
-- operations needed then using class Set might yield better 
performance.
I do't much understand what you mean. If not hard can give you an 
example...
-- 
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