From: benny <listen@...>
Date: 2004-11-05T22:48:43+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.
> 

how about this?

 arr = [1, 2, 3, 4, 5]
 first = arr.shift
 print arr.inject(first) { | c, i | "#{c.to_s}, #{i.to_s}" }

benny