When every microsecond counts you factor out expensive stuff into XS code. Or don't use perl.

That said, constructing (and tearing down) a hash (which happens if you call foo( {bar => 'quux'} )) at every subroutine invocation is expensive, but calling a sub in the first place is probably more expensive (stack frame setup / enter / leave / unwind cycle).

--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: When every microsecond counts: Parsing subroutine parameters by shmem
in thread When every microsecond counts: Parsing subroutine parameters by snowhare

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