Perl Sessions

Wednesday was my Perl session day, so here's a glob of the 4 sessions I attended.

New Beginnings in Perl 5

Why switch to Ruby?

• Got fed up with jumping through hoops

• for example, unrolling @_

  • my ($arg1,$arg2) = @_

Why come back

• use MooseX::Declare

• use TryCatch

• cpanm

• NYTProf

• Test::Class::Sugar

“Language design is premature optimization”

What's New in Perl 5.12

Perl5 is 16 years old (!!)

New CPAN goodness

• Moose

• Plack

• cpanm

• Devel::Declare

• AnyEvent

• Devel::NYTProf

Perl6 is a completely different language from Perl5

• Perl5 and Perl6 are different versions of Larry's brain

• rakudo.org

• perl6 will not replace Perl5

What's new in Perl 5.12

• 5.10 is not too new to use anymore

• use 5.12.0 → use strict

• deprecations warn by default

• suidperl is dead

• Y2.038K compliant

• DTrace support

• sub do_something{...}

Perl 6

Perl 6 language specification

• separate from implementation

Perl 6 implementations

• Rakudo

• Pugs

Rakudo *

• early adopter distribution of Perl 6

Profiling Perl with Devel::NYTProf

Subroutine

• Measures time spent in a subroutine

Statement

• measure time from one statement to the next

Output

• kcachegrind

• HTML

• Tree Map

• DOT file (graphviz)

Exclusive time

• Time spent executing statements in the current subroutine

Inclusive time

• Exclusive time + time spent is called routines