From: Elliot Temple <curi@...>
Date: 2006-06-04T10:48:02+09:00
Subject: Re: Where can one find examples of masterful Ruby code?


On Jun 3, 2006, at 6:17 PM, Ray Baxter wrote:

> Alder Green wrote:
>
>> For example: check if integer i is a power of 2, with an  
>> expression no
>> more than 13 characters long.
>> Solution: (i & (i - 1))
>
> 0 is a power of 2?

2^negative_infinity

add a special case if you like.

-- Elliot Temple
http://www.curi.us/blog/