Conheça um pouco mais sobre a linguagem Perl de programação e tudo que ela tem a oferecer! YAPC::Brasil 2014

1. Descobrindo a
Linguagem Perl

2. Olá!

3. @that_garu

4. Just another Perl hacker

5. Perl?

9. Perl.

10. print''.join('%(pre)s%(num)s %(bot)s on the wall, %(nul)s %(bot)s,n%(tak)sn'%(lambda c,b:{'pre'
:['','%s %s on the wall.nn'%(c,b)][abs(cmp(c,'Ninety-nine'))],'num':c,'nul':c.
lower(),'bot':b,'tak':['Go to the store and buy some more... Ninety-nine %s.'%b,'Take one down, pass it around,']
[abs(cmp(x,0))] })((lambda x,o:[(['Twenty','Thirty','Forty','Fifty','Sixty','Seventy','Eighty','Ninety'
][x/(2*3+4)-2]+'-'+o.lower()).replace('-no more',''),o][int(x<20)])(x,['No more','One','Two','Three','Four','Five',
'Six','Seven','Eight','Nine','Ten','Eleven','Twelve','Thirteen','Fourteen',‘Fifteen','Sixteen','Seventeen','Eighteen',
'Nineteen'][[x,x%10][int(x>=20)]]),'bottle%s of beer'%['','s'][abs(cmp(x,1))]) for x in xrange(99,-1,-1))

11. d=[30644250780,9003106878,30636278846,66641217692,4501790980,
67124603036,13161973916,66606629920,30642677916,30643069058];a,s=
[],$*[0];s.bytes{|b|a<<('%036b'%d[b.chr.to_i]).scan(
/d{6}/)};a.transpose.each{|a|a.join.bytes{|i|
print((49==i)?($*[1]||"#"):32.chr)};puts}

12. use CGI':all';path_info=~/w+/;$_=`grep -l $& *`.h1($&).escapeHTML$t=param(t)
||`dd<$&`;open F,">$&";print F$t;s/httS+|([A-Z]w+){2,}/a{href,$&},$&/eg;
print header,pre"$_<form>",submit,textarea t,$t,9,70

13. use Dancer;
use DateTime;
!
get '/friday13' => sub {
is_friday_the_13th( DateTime->now );
};
!
get '/friday13/:year/:month/:day' => sub {
my $date = DateTime->new(
year => param('year' ),
month => param('month'),
day => param('day' ),
);
!
is_friday_the_13th( $date );
};
!
sub is_friday_the_13th {
my $date = shift;
!
if ($date->day == 13 and $date->day_name eq 'Friday') {
return ‘YES!';
}
else {
return 'NO :(';
}
}
!
start;

14. moderna

15. multi-plataforma

16. multi-paradigma

17. enterprise-ready

28. Perl.

29. Comunidade Perl.

30. CPAN
metacpan.org

32. CPAN Testers
cpantesters.org

33. Perl Mongers
pm.org

34. YAPC
Yet Another Perl Conference

35. irc.perl.org
1249 usuários, 462 canais

36. Usuários mais felizes?

37. http://www.crowdflower.com/blog/2009/05/the-programming-language-with-the-happiest-users

41. Músicas
(sério)

44. Poesia
(mais sério ainda)

45. my $eyes = "closed";
my $heart = "aching";
my $beloved = "gone";
!
!
no warnings;
!
my $love = ();
!
!
open MY, "mind";
foreach ($love) {
open MY, $eyes;
tell my $mind or open my $eyes;
}
!
do not $fear and do not die;
!
$i; die "because i love youn";
!
do { $i; sleep($_) } while ( $awake );
!
warn "$me" if ($i == $wrong);
!
bind my $love, $dear and do not exit;
for (my $world = "dark") {};
for (my $eyes = "blind") {};

46. doações & apoios

47. Send-a-Newbie

48. Google SoC / Code-in

49. GNOME Outreach
Program for Women

50. The Perl Foundation

51. Enlightened Perl
Organisation

52. Japan Perl
Association

53. Websites

54. Listas de Discussão

55. Encontros Técnicos++

56. Encontros Sociais++
Encontros Sociais++
Encontros Sociais++

57. Fácil de contribuir

58. super
Fácil de contribuir

59. Perl ♡ Github

60. Perl 5 em 5 minutos!

61. use strict;
use warnings;

62. use strict;
use warnings;
use diagnostics;

63. print “Alo, Mundo”;

64. print 4 + 3 * 2;

65. use Math::Trig;
!
print Math::Trig::tan(1);

66. print “Alo, Mundo”;

67. sub alo {
print “Alo, Mundo”;
!
}

68. sub alo {
my ($nome) = @_;
print “Alo, $nome”;
}
!
alo( “YAPC::Brasil” );

69. package Educado;
!
sub alo {
my ($nome) = @_;
print “Alo, $nome”;
}
!
1;

70. use Educado;
!
alo( “YAPC::Brasil” );

71. package Educado;
!
sub alo {
my ($nome) = @_;
print “Alo, $nome”;
}
!
1;

72. package Educado;
use Moo;
!
has ‘nome’, is => ‘ro’, default => ‘Mundo’;
!
sub alo {
my ($self) = @_;
print “Alo, “ . $self->nome;
}
!
1;

73. use Educado;
!
my $obj = Educado->new;
!
!
!
print $obj->alo;

74. use Educado;
!
my $obj = Educado->new(
nome => ‘YAPC’,
);
!
print $obj->alo;

75. sub alo {
my ($nome) = @_;
if ($nome eq ‘YAPC’) {
foreach my $area (‘NA’, ‘EU’, ‘Asia’, 'Brasil’) {
print “Alo, YAPC::” . $area;
}
}
else {
print “Alo, $nome”;
}
}

76. Snippets!

77. use autodie;
open my $fh, '<', 'arquivo.txt';
!
while (my $linha = <$fh>) {
print $linha;
}
close $fh;

78. use autodie;
open my $fh, ‘>', 'arquivo.txt';
!
print $fh 'Alô, mundo!';
!
close $fh;

79. use Net::Twitter::Search;
!
my $busca = Net::Twitter::Search->new;
!
$busca->search(‘Perl')->{results};
!
foreach my $result ( @$busca ) {
say $result->{text};
}

80. !
use WWW::Mechanize;
my $mech = WWW::Mechanize->new;
!
$mech->get( 'http://www.exemplo.com' );
!
$mech->follow_link( text => 'download' );
!
$mech->submit_form( with_fields => {
nome => 'Meu Nome’,
linguagem => ‘Perl!',
});

81. !
use Spreadsheet::Read;
!
# planilha pode ser em .csv, .xls, .ods, .sxc...
my $data = ReadData( 'data.xlsx' );
!
# primeira planilha, campo A3
say $sheet->[1]{'A3'};

82. use Dancer;
!
get ‘/:nome' => sub {
“Olá, ". param(‘nome');
};
!
!
start;

83. use Dancer;
use DateTime;
!
get '/friday13' => sub {
is_friday_the_13th( DateTime->now );
};
!
get '/friday13/:year/:month/:day' => sub {
my $date = DateTime->new(
year => param('year' ),
month => param('month'),
day => param('day' ),
);
!
is_friday_the_13th( $date );
};
!
sub is_friday_the_13th {
my $date = shift;
!
if ($date->day == 13 and $date->day_name eq 'Friday') {
return ‘YES!';
}
else {
return 'NO :(';
}
}
!
start;

84. perldoc.perl.org

85. perldoc Meu::Modulo

86. perldoc -f função

87. http://onyxneon.com/books/modern_perl/