This 'cheat sheet' is a handy reference, meant for beginning Perl programmers. Not everything is mentioned, but 194 features may already be overwhelming.http://search.cpan.org/~nwclark/perl-5.8.7/pod/perlcheat.pod
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AUTHOR
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Juerd Waalboer, with the help of many Perl Monks.
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the original PM post
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Damian Conway's Perl 6 version
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home of the Perl Cheat Sheet
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void
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scalar
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list
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$scalar
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@array
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%hash
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&sub
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*glob
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ARRAYS
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HASHES
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whole:
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@array
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%hash
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slice:
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@array[0, 2]
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@hash{'a', 'b'}
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element:
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$array[0]
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$hash{'a'}
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for (LIST) { }, for (a;b;c) { }
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while ( ) { }, until ( ) { }
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if ( ) { } elsif ( ) { } else { }
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unless ( ) { } elsif ( ) { } else { }
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for equals foreach (ALWAYS)
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Search the CPAN - metacpan.org
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Perl Weekly
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PerlMonks - The Monastery Gates
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What's happening in the world of Perl programming, including Perl 5, Perl 6, the CPAN and Parrot?
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The Comprehensive Perl Archive Network - www.cpan.org
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News and views of the Perl programming language
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Perl programming documentation - perldoc.perl.org
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Perl Conferences, YAPCs, Workshops, and Hackathons
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Perl 6
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Perl 6 Tablet 2 - Basic Syntax
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Learn Perl - learn.perl.org
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Perl - Download
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The Perl.org Online Library
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Books and More (Videos)
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Padre, the Perl IDE
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perlcheat
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Gabor Szabo Perl Trainer and developer
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Perl,Perl Mongers,Mongers,User Group,Meeting
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Facebook vs Google+ for Perl projects
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Lections about Per from Gabor Szabo
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mod_perl world
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Interpreted Languages: PHP, Perl, Python, Ruby (Sheet One)
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Moose - A postmodern object system for Perl
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Perl Training Australia - Perl Tips
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Basic Perl (Ynon Perek | An Amazing Learning Experience) , super
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Perl Questions - Stack Overflow
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Perl - Cheat sheets Collection
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complete, working examples of good Perl code
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Perl Programming Tutorials
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Video from UniverTV
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FAQ по perl и программированию для web
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FAQ PERL Agava
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Modern::Perl
enable all of the features of Modern Perl with one import
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Toolkit
use Toolkit; and put all your favorite modules in a file: > cat $PERL5LIB/Toolkit/Macros/ALWAYS/Modules use strict; use warnings; use Carp; use Smart::Comments;
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use common::sense;
supposed to be the same, with much lower memory usage, as: # # use strict qw(vars subs); # use feature qw(say state switch); # no warnings; # use warnings qw(FATAL closed threads internal debugging pack substr malloc # unopened portable prototype inplace io pipe unpack regexp # deprecated exiting glob digit printf utf8 layer # reserved parenthesis taint closure semicolon); # no warnings qw(exec newline);
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latest
There is latest, which is no longer the latest. Demonstrates part of the naming problem.
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uni::perl
Also, uni::perl which adds enabling unicode part of the mix.
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ToolSet
ToolSet offers a subset of Toolkit's abilities, but without source filters.
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Moose
I'll include Moose here, since it automatically adds strict and warnings to the calling package.
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Acme::Very::Modern::Perl
Using this module, you'll get Modern::Perl, Toolkit, latest, uni::perl, perl5i, and common::sense with just one simple line.
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Source
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^
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string begin
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$
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str. end (before \n)
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+
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one or more
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*
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zero or more
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?
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zero or one
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{3,7}
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repeat in range
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()
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capture
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(?:)
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no capture
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[]
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character class
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alternation
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\b
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word boundary
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\z
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string end
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.
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[^\n]
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\s
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[\x20\f\t\r\n]
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\w
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[A-Za-z0-9_]
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\d
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[0-9]
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\S, \W and \D
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negate
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/i
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case insens.
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/m
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line based ^$
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/s
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. includes \n
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/x
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ign. wh.space
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/g
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global
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\Q
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quote (disable) pattern metacharacters till \E
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\E
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end either case modification or quoted section, think vi
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stat
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localtime
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caller
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0 dev
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0 second
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0 package
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1 ino
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1 minute
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1 filename
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2 mode
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2 hour
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2 line
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3 nlink
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3 day
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3 subroutine
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4 uid
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4 month-1
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4 hasargs
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5 gid
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5 year-1900
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5 wantarray
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6 rdev
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6 weekday
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6 evaltext
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7 size
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7 yearday
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7 is_require
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8 atime
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8 is_dst
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8 hints
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9 mtime
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9 bitmask
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10 ctime
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just use
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11 blksz
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POSIX::
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3..9 only
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12 blcks
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with EXPR
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source
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Padre
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http://padre.perlide.org/ The Perl Application Development and Refactoring Environment (written in Perl 5)
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Eclipse
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with the EPIC plugin http://www.epic-ide.org/ or with Perlipse http://code.google.com/p/perlipse/ using dltk
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ActiveState
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proprietary Komodo IDE http://www.activestate.com/Products/komodo_ide/ or free Komodo Edit http://www.activestate.com/Products/komodo_ide/komodo_edit.mhtml
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Kephra
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http://kephra.sourceforge.net Programmers Editor along perl-like Paradigms, written in Perl
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Gvim
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www.vim.org with Perl support http://www.vim.org/scripts/script.php?script_id=556
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Emacs
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Perl Development Tools
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\t
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tab (HT, TAB)
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\n
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newline (LF, NL)
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\r
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return (CR)
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\f
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form feed (FF)
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\a
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alarm (bell) (BEL)
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\e
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escape (think troff) (ESC)
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\cK
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control char (example: VT)
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\x{}, \x00
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character whose ordinal is the given hexadecimal number
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\N{name}
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amed Unicode character or character sequence
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\N{U+263D}
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Unicode character (example: FIRST QUARTER MOON)
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\o{}, \000
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character whose ordinal is the given octal number
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\l
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lowercase next char (think vi)
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\u
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uppercase next char (think vi)
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\L
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lowercase till \E (think vi)
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\U
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uppercase till \E (think vi)
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\Q
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quote (disable) pattern metacharacters till \E
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\E
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end either case modification or quoted section, think vi
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\
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$$foo[1] ==
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references
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$foo->[1]
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$@%&*
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$$foo{bar}==
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dereference
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$foo->{bar}
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{}
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${$$foo[1]}[2]==
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anon. hashref
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$foo->[1]->[2]
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\()
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${$$foo[1]}[2]==
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list of refs
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$foo->[1][2]
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$_
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default variable
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$0
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program name
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$/
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input separator
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$\
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output separator
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$|
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autoflush
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$!
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sys/libcall error
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$@
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eval error
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$$
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process ID
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$.
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line number
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@ARGV
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command line args
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@INC
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include paths
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@_
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subroutine args
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%ENV
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environment
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NUMBERS
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STRINGS
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=
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=
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.
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.
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== !=
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eq ne
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< > <= >=
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lt gt le ge
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<=>
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cmp
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use Modern::Perl;
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use strict;
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use warnings;
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my $var;
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open() or die $!;
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use Modules;
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"$foo"
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$$variable_name
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$userinput |
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/$userinput/
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->
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++ --
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**
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! ~ \ u+ u-
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= !
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* / % x
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+ - .
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<< >>
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named uops
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< > <= >= lt gt le ge
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== != <=> eq ne cmp
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&
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| ^
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&&
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||
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.. ...
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?:
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= += -= *= etc.
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, =>
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list ops
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not
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and
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or xor
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perlcheat
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perl-reference-card
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20-killer-perl-programming-tips
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Cheatography n. The art of mapping complex subjects into clear, instantly navigable reference guides.
