Well, I have been the poster to fwp... and I looked up your node after I posted (but I definitely knew there must be something around like that in the monastery). Here is the exciting answer from Uri: 
>>>>> "s" == shmem  <gm@cruft.de> writes:


  s> You forgot an obscure corner of hashes: hashes in scalar context.
  s> Here's a a use - calculate the next power of 2 of a given number:

  s> sub next_power_of_two {
  s>     my %s;
  s>     @s{1..shift} = ();
  s>     %s =~ '/';
  s>     return $';
  s> }

  s> ;-)

GACK!!!

and that assume knowledge of the internals of hashes. not a good thing
to teach! :)

uri

[download]

but your version is much more elegant, except perhaps the %s =~ '/' thingy ;-D

update: and I posted it only because the discussion went into discussing the pros and cons of dispatch tables, oo, inheritance etc pp... in short, to introduce some fun again ;-)

--shmem 

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}

In reply to Re^2: next power of two by shmem
in thread next power of two by dk

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