From: Ehsanul Hoque <ehsanul_g3@...>
Date: 2009-09-28T01:12:28+09:00
Subject: Re: handling of regexp objects that aren't referenced by variables, 	arrays, tables or objects

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> Is it the case that such "anonymous" objects like regexps (maybe also
> strings?) are re-created whenever the code snippet they are defined in
> is executed?  If so=2C is there a convenient way of preventing this?  Is
> this only the case for regexps or also for strings and other objects?
> (Why is it the case at all - I can't make any sense of it?)  I would
> like to learn how I can write Ruby code that is reasonably efficient
> in this regard because the impact on execution time in the described
> situation was so immense.  (I'm currently using Ruby 1.9.1.)

Yes=2C indeed a new object is indeed created every time an anonymous object=
 is created. The only core object I know of for which this is not true is t=
he symbol=2C which is basically an immutable string. There may be others I'=
m not aware of though. I suppose your code shows that there just might be a=
 need for the symbol equivalent of a regexp.
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