From: Zach Dennis <zdennis@...>
Date: 2004-11-05T12:01:05+09:00
Subject: Re: Cleaner way to do this?

Harry Ohlsen wrote:

>> -----Original Message-----
>> From: Wayne Vucenic [mailto:nightphotos@gmail.com] 
>> Sent: Friday, 5 November 2004 12:12
>> To: ruby-talk ML
>> Subject: Re: Cleaner way to do this?
>>
>> How about
>>
>> [1, 2, 3, 4, 5].each_with_index do |x, i|
>>   if i == 0
>>     print x
>>   else
>>     print ", ",x
>>   end
>> end
>>    
>>
>
>That's what I initially suggested :-).
>
>However, he felt it was a bit crazy to do the test every time, given the
>large size of the array.
>
>H.
>

If your friend knows the processing he wants to do on the first element, 
why not just keep it simple...


arr = [1,2,3,4,5]
process = proc{ |e| print e }.call( arr[0] )
arr[1...arr.length].each do |e|
    print ", #{e}"
end

Zach