The document presents an overview of modern Perl practices and tooling, particularly for Perl 5 amid the excitement for Perl 6. It discusses various enhancements in the language and introduces tools like Perlbrew, Plenv, and cpanminus for better module and version management. It also highlights resources for staying updated on Perl developments and module ratings.

1. Modern Perl for the
Unfrozen Paleolithic
Perl Programmer
John SJ Anderson ⭐︎ Infinity Interactive ⭐︎ @genehack
Pittsburgh Perl Workshop 2015 ⭐︎ 11 Oct 2015

2. I'M JUST A CAVEMAN
DERN PERL FRIGHTENS AND CON

4. Quite a few
things have
changed...

5. ...but many
haven't

6. You're just in time
for the Perl6
release party

7. We're still
using Perl5!

10. Many
language
improvements

15. defined($this) ? $this : $that
defined-or

16. $this // $that
defined-or

17. subroutine
signatures

18. sub add ($one, $two) {
return $one + $two;
}

19. new tools

20. "system" perl:

21. "system" perl:
just say no

22. /usr/bin/perl

23. /usr/bin/perl

25. perlbrew.pl

27. https://github.com/tokuhirom/plenv

28. advantages
• Solves "vendor Perl lockin" issues
• Install multiple Perls in your home directory
• ... or elsewhere
• Trivially switch from Perl version to Perl version
• Able to install modules without special permissions
• Easy to stay up to date with Perl development

29. plenv > perlbrew
• Less magic messing around with PATH
• Can "pin" Perl different ways: globally, per-shell, or
per-directory

30. perlbrew > plenv
• Kickass website

31. ing of installing in your $H

32. local::lib

33. local::lib
• Install your own copies of modules
• In your $HOME (so no special permissions needed)
• Can also install per-project modules
• Integrates well with other tools

34. speaking of installing stuff…

35. cpanminus
cpanm

36. % cpan Git::Wrapper
CPAN: Storable loaded ok (v2.54)
Reading '/Users/genehack/.cpan/Metadata'
Database was generated on Sat, 10 Oct 2015 01:17:02 GMT
Running install for module 'Git::Wrapper'
CPAN: LWP::UserAgent loaded ok (v6.13)
Fetching with LWP:
http://cpan.schatt.com/authors/id/G/GE/GENEHACK/Git-Wrapper-0.045.tar.gz
CPAN: YAML loaded ok (v1.15)
CPAN: Digest::SHA loaded ok (v5.95)
Fetching with LWP:
http://cpan.schatt.com/authors/id/G/GE/GENEHACK/CHECKSUMS
CPAN: Compress::Zlib loaded ok (v2.068)
Checksum for /Users/genehack/.cpan/sources/authors/id/G/GE/GENEHACK/Git-Wrapper-
0.045.tar.gz ok
tmp-47326 for tmp-47326: No such file or directory at
/opt/plenv/versions/5.23.2/lib/perl5/5.23.2/CPAN/Distribution
.pm line 468.
CPAN: File::Temp loaded ok (v0.2304)
CPAN: CPAN::Meta::Requirements loaded ok (v2.133)
CPAN: Parse::CPAN::Meta loaded ok (v1.4417)
CPAN: CPAN::Meta loaded ok (v2.150005)
CPAN: Module::CoreList loaded ok (v5.20150820)
Configuring G/GE/GENEHACK/Git-Wrapper-0.045.tar.gz with Makefile.PL
Locating bin:git... found at /opt/git/bin/git.
Checking if your kit is complete...
Looks good
Generating a Unix-style Makefile
Writing Makefile for Git::Wrapper
Writing MYMETA.yml and MYMETA.json

37. GENEHACK/Git-Wrapper-0.045.tar.gz
[17/1516]
/opt/plenv/versions/5.23.2/bin/perl5.23.2 Makefile.PL -- OK
Running make for G/GE/GENEHACK/Git-Wrapper-0.045.tar.gz
cp lib/Git/Wrapper/File/RawModification.pm blib/lib/Git/Wrapper/File/RawModification.pm
cp lib/Git/Wrapper.pm blib/lib/Git/Wrapper.pm
cp lib/Git/Wrapper/Statuses.pm blib/lib/Git/Wrapper/Statuses.pm
cp lib/Git/Wrapper/Exception.pm blib/lib/Git/Wrapper/Exception.pm
cp lib/Git/Wrapper/Log.pm blib/lib/Git/Wrapper/Log.pm
cp lib/Git/Wrapper/Status.pm blib/lib/Git/Wrapper/Status.pm
Manifying 6 pod documents
GENEHACK/Git-Wrapper-0.045.tar.gz
/usr/bin/make -- OK
Running make test
PERL_DL_NONLAZY=1 "/opt/plenv/versions/5.23.2/bin/perl5.23.2" "-MExtUtils::Command::MM" "-
MTest::Harness" "-e" "und
ef *Test::Harness::Switches; test_harness(0, 'blib/lib', 'blib/arch')" t/*.t
t/00-load.t ............... 1/6 # Testing Git::Wrapper 0.045
t/00-load.t ............... ok
t/author-err.t ............ skipped: these tests are for testing by the author
t/basic.t ................. # Testing git version: 2.5.2
t/basic.t ................. ok
t/git_binary.t ............ ok
t/parse_args.t ............ ok
t/path_class.t ............ # Testing git version: 2.5.2
t/path_class.t ............ ok
t/release-pod-coverage.t .. skipped: these tests are for release candidate testing
t/release-pod-syntax.t .... skipped: these tests are for release candidate testing
All tests successful.
Files=8, Tests=67, 1 wallclock secs ( 0.04 usr 0.02 sys + 0.39 cusr 0.31 csys = 0.76 CPU)
Result: PASS
GENEHACK/Git-Wrapper-0.045.tar.gz

38. (still not done
but I got tired
of pasting.)

39. % cpanm Git::Wrapper
--> Working on Git::Wrapper
Fetching http://www.cpan.org/authors/id/G/GE/GENEHACK/Git-Wrapper-0.045.tar.gz ... OK
Configuring Git-Wrapper-0.045 ... OK
Building and testing Git-Wrapper-0.045 ... OK
Successfully installed Git-Wrapper-0.045

40. speaking of stuff on CPAN…

41. https://metacpan.org/

42. search.cpan.org

43. https://metacpan.org/

44. https://metacpan.org/

45. https://github.com/CPAN-API/metacpan-web

46. Duck Duck Go

47. Duck Duck Go

48. speaking of modules...

49. JSON::MaybeXS

51. CGI.pm
is
gone

52. (not really)

54. speaking of Perl websites…

55. http://cpanratings.perl.org/

56. http://cpanratings.perl.org/

57. https://metacpan.org/

58. http://cpants.cpanauthors.org/

59. http://cpants.cpanauthors.org/

60. https://metacpan.org/

61. http://prepan.org/

62. g of staying up to date on Perl

63. http://perlweekly.com/

64. http://blogs.perl.org/users/sawyer_x/

65. speaking of
retrospectives…

67. questions?