From: Tomasz Wegrzanowski <tomasz.wegrzanowski@...>
Date: 2006-09-05T09:23:27+09:00
Subject: Re: Kernel.=== in case statements, even though I never called it

On 9/5/06, Jesse Silliman <wierdbro@gmail.com> wrote:
> I was profiling a script I wrote, and the method with the greatest
> amount of time used was Kernel.=== . I was surprised, not only since I
> didn't use this method in my code, but my code had nothing involving
> modules. When I changed a case statement that was inside my loop to an
> if and many elsifs, I saved about 2 seconds on profiling, and the call
> was gone. Is there a reason such a slow call is used in case statements?

case uses === (pattern match) not ==.

It is very useful:

case str
when /foo/
   ...
end

case num
when 3..5
   ...
end


-- 
Tomasz Wegrzanowski [ http://t-a-w.blogspot.com/ ]