From: Marnen Laibow-Koser <marnen@...>
Date: 2009-12-12T05:50:28+09:00
Subject: Re: human-readable listing of array elements

Shot (Piotr Szotkowski) wrote:
> Aldric Giacomoni:
> 
>> This took me less than a minute to write, but I don't know if it's as
>> elegant as it could be. Are there more "Ruby-like ways(tm)" to write
>> this?
> 
>>         string += ", #{element}"
>>     end
>>   end
>>   string
>> end
> 
> Couldn’t resist:
> 
> def stringify a
>   a.size < 2 ? a.first.to_s : a[0..-2].join(', ') + " and #{a.last}"
> end
> 
>>> stringify []
> => ""
>>> stringify ['Arthur']
> => "Arthur"
>>> stringify ['Arthur', 'Ford']
> => "Arthur and Ford"
>>> stringify ['Arthur', 'Ford', 'Trillian']
> => "Arthur, Ford and Trillian"
>>> stringify ['Arthur', 'Ford', 'Trillian', 'Marvin']
> => "Arthur, Ford, Trillian and Marvin"
> 
> — Shot

I like it!

Best,
-- 
Marnen Laibow-Koser
http://www.marnen.org
marnen@marnen.org
-- 
Posted via http://www.ruby-forum.com/.