From: Julian Leviston <julian@...>
Date: 2009-02-10T21:29:43+09:00
Subject: Re: a better way to do this job?

Slices and 'sub-arrays' aren't copies of the objects, they simply  
refer to the identical objects.

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On 10/02/2009, at 10:37 PM, 7stud -- <bbxx789_05ss@yahoo.com> wrote:

> Zhenning Guan wrote:
>> topics.each do |f|
>>  times +=1
>>  puts f.title
>>  if times > 4
>>    break
>>
>
>>> Another option, which can be used for any Enumerable object is:
>>>
>>> topics.each_with_index do |f, i|
>>>  puts f.title
>>>  break if i > 4
>>> end
>>>
>>> While not as nice as the first version, it's a bit clearer than your
>>> code.
>>>
>
> In my opinion, it's nicer than the first version because it doesn't  
> have
> to create a sub array in memory, like all the solutions posted so far
> do, which could be a problem with large arrays and large slices.
>
> 4.times do |i|
>  puts topics[i].title
> end
>
> -- 
> Posted via http://www.ruby-forum.com/.
>