From: ara.t.howard@...
Date: 2006-07-16T01:37:34+09:00
Subject: Re: Preferred monkeypatching technique

On Sat, 15 Jul 2006, Daniel Martin wrote:

> Eric Hodel <drbrain@segment7.net> writes:
>
>> You don't need a mutex.
>>
>> class Symbol
>>   @gensym_count = 0
>>   def self.gensym
>>     ("__gensym__%X" % @gensym_count += 1).intern
>>   end
>> end
>
> Okay, but now if two different files include this exact code, you're
> re-generating the same symbols.  This is why I used ||=, making your
> code:
>
> class Symbol
>  @gensym_count ||= 0
>  def Symbol.gensym
>    ("__gensym__%X" % @gensym_count += 1).intern
>  end
> end
>
> At the very least, two people using the same exact code to define
> gensym shouldn't collide with each other.

if two different files have this exact same code inlined the programmer should
be shot.  if two different files require a third that contains this code then
there will be no problem.

2 cts.

-a
-- 
suffering increases your inner strength.  also, the wishing for suffering
makes the suffering disappear.
- h.h. the 14th dali lama