From: dblack@...
Date: 2006-10-12T01:55:03+09:00
Subject: Re: Compact if statement for Codegolf

Hi --

On Thu, 12 Oct 2006, ara.t.howard@noaa.gov wrote:

> On Thu, 12 Oct 2006 dblack@wobblini.net wrote:
>
>> Hi --
>> 
>> On Thu, 12 Oct 2006, Drew Olson wrote:
>> 
>>> I'm working on my codegolfing skills and was wondering, what is the
>>> shortest possible way to write the following in ruby:
>>> 
>>> if a==0
>>>   1
>>> else
>>>   2
>>> end
>> 
>> The smallest I can think of is:
>>
>>  a==0?1:2
>> 
>
> if a will only have values 0 or 1 you could use
>
>  2**a
>
> if a is always positive you could use
>
>  a>0?2:1

And if a is always 0 you could use:

   1

Sorry, couldn't resist :-)


David

-- 
                   David A. Black | dblack@wobblini.net
Author of "Ruby for Rails"   [1] | Ruby/Rails training & consultancy [3]
DABlog (DAB's Weblog)        [2] | Co-director, Ruby Central, Inc.   [4]
[1] http://www.manning.com/black | [3] http://www.rubypowerandlight.com
[2] http://dablog.rubypal.com    | [4] http://www.rubycentral.org