[sf-perl] Real perl

Dana Diederich diederich at gmail.com
Tue Apr 10 15:29:20 PDT 2012

That's a bit of an absolute statement, Randal.  There are definitely highly
relevant cases where it doesn't make sense to use Moose and friends.  If
program load time or overall performance is a primary goal, 'old school'
Perl might make more sense.  Granted it's often possible to re-frame the
overall problem so those aspects aren't as important, but it often doesn't
make sense to do that.

dana at hithlum:~/bench$ cat p1

my $foo = {};
bless $foo, 'Foo';

my $counter = 1;
for(1..100000) {
    $counter = $foo->adder($counter);
print "$counter\n";

package Foo;

adder {
    return $_ + 1;

dana at hithlum:~/bench$ time ./p1

real    0m0.045s
user    0m0.044s
sys     0m0.000s
dana at hithlum:~/bench$ cat p2

use lib '.';
use Foo;

my $foo = Foo->new;
my $counter = 1;
for(1..100000) {
    $counter = $foo->adder($counter);
print "$counter\n";
dana at hithlum:~/bench$ cat Foo.pm
use MooseX::Declare;

class Foo {
    method adder (Num $ct) {
        return $ct + 1;
dana at hithlum:~/bench$ time perl ./p2

real    0m13.718s
user    0m13.661s
sys     0m0.044s
dana at hithlum:~/bench$

I write code using Moose and the wide galaxy of exceptional modules it has
spawned every day.  And I yearn for the day that I can use Perl6 in my
production environment.  (It's getting close, last time I looked!)  But
sometimes raw 'cpu' performance is important.

Most of the time, I start using the highest-level modules possible, and if
there's a performance problem, I end up 'dumbing down' the hot-spots, using
simpler Perl.  For me, this is rare.


On Tue, Apr 10, 2012 at 2:00 PM, Randal L. Schwartz
<merlyn at stonehenge.com>wrote:

> >>>>> "Dodger" == Dodger  <el.dodgero at gmail.com> writes:
> Dodger> So... How about some old school perl without mooses and meeses?
> Dodger> Anybody out there code in... You know... Perl?
> Seriously, if you're launching green code and not using Moose, you have
> some weird nostalgia in you that prevents you from being a useful coder
> for me or my clients.
> --
> Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777
> 0095
> <merlyn at stonehenge.com> <URL:http://www.stonehenge.com/merlyn/>
> Smalltalk/Perl/Unix consulting, Technical writing, Comedy, etc. etc.
> See http://methodsandmessages.posterous.com/ for Smalltalk discussion
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