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Re: optimization idea
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From:
H.Merijn Brand
Date:
October 26, 2004 03:32
Subject:
Re: optimization idea
Message ID:
20041026123056.CFD6.H.M.BRAND@hccnet.nl
On Tue 26 Oct 2004 12:24, Elizabeth Mattijsen <liz@dijkmat.nl> wrote:
> >> > sub statename {
> >> > my $name = 'david';
> >> > ${\$name} = 'liz';
> >> > return "hello, my name is $name";
> >> > }
> >
> >But surely in this case the ${\$name} should itself be optimised to $name
> >first?
>
> Well, possibly. I just wrote it that way to be as succinct as
> possible. I seriously doubt whether spending the extra cycles for
> checking for this particular type of situation are worth the
> optimization.
This one would be a compile time optimilization, and would happen only once.
The de-ref would be done run-time, and the time gained is completely depending
on how often it would happen
--
H.Merijn Brand Amsterdam Perl Mongers (http://amsterdam.pm.org/)
using perl-5.6.1, 5.8.3, & 5.9.x, and 809 on HP-UX 10.20 & 11.00, 11i,
AIX 4.3, SuSE 9.0, and Win2k. http://www.cmve.net/~merijn/
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