Perl - Programming language

Perl is an open source programming language created in 1987 by Larry Wall.

#8on PLDB

39Years Old

170kRepos

Download source code:

git clone https://github.com/Perl/perl5

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Perl is a family of high-level, general-purpose, interpreted, dynamic programming languages. The languages in this family include Perl 5 and Perl 6. Though Perl is not officially an acronym, there are various backronyms in use, including "Practical Extraction and Reporting Language". Read more on Wikipedia...

Tags: programming language
Perl is developed on GitHub and has 1,886 stars
There are at least 169,830 Perl repos on GitHub
Early development of Perl happened in Unisys
Perl is written in Perl, C, Bourne shell, XML, YAML, JSON, Markdown, Tex, Pascal, Make, Diff, Lisp, Prolog, SQL, Yacc, D
The Google BigQuery Public Dataset GitHub snapshot shows 69k users using Perl in 102k repos on GitHub
Check out the 83 Perl meetup groups on Meetup.com.
There are 15,510 members in the Perl subreddit
There are 2,433 Project Euler users using Perl
In the 2021 StackOverflow developer survey Perl programmers reported a median salary of $80,000. 2% of respondents reported using Perl. 2,028 programmers reported using Perl, and 1,175 said they wanted to use it
Explore Perl snippets on Rosetta Code
Perl on HOPL
Perl ranks #15 in the TIOBE Index
CodeMirror package for syntax highlighting Perl
Monaco package for syntax highlighting Perl
Pygments supports syntax highlighting for Perl
GitHub supports syntax highlighting for Perl
Learn Perl on exercism.
PLDB has 4 Jupyter Kernels for Perl: metacpan.org, github.com, github.com, github.com
There is a central package repository for Perl
Annual Reports for Perl
Events page for Perl
Indeed.com has 8,795 matches for "perl engineer".
perl.org was registered in 1995
See also: (37 related languages) PEARL, C, Lisp, Pascal, sed, CoffeeScript, Falcon, Groovy, JavaScript, Julia, LPC, Raku, PHP, Python, Ruby, PowerShell, Unix, Bourne shell, Regular Expressions, Unicode, Haskell, Parrot, DTrace, JSON, awk, Fortran, S-expressions, Yacc, Bison, SQL, HTML, XS, RFC, JVM, APL, Perl Data Language, Pod
125 PLDB concepts link to Perl: Ace Editor, AL, Apache Hbase, Bash, Bazel, beef-lang, Berkeley DB, BlitzMax, Bucardo, Ceylon, CIR, Ć, Civet, Click, clike, cloc, CMake, CodeQL, cosh, cperl, Cryptol, Cyber, Dale, Dashrep, dlvm, eC, ECL, Eiffel, elymas, Erlang, Factor, Felix, FFmpeg, Flare, FLEX, Flow9, Frege, Frundis, GAP, GHC, Git, Go, groff, gura, hakaru, HHVM, Homa, icarus, Idio, Idris, Iterm2, JAL compiler, Java, Jemplate, JFlex, juicy, Kakoune, KaTeX, ko, Lean, Links, Linux, lobster, mal, Markdown, mathics, michelson, MongoDB, Mudlle, mythryl, NCAR Command Language, nesC, netbeans-editor, newclay, Nextflow, nianiolang, Nit, Node.js, Noweb, ObjectScript, Obsidian, Opa, Opal, OpenCV, OpenRC runscript, Org Mode, Pan, ParaView, PCRE, Perl, polyglot-compiler, PostgreSQL, Potion, POV-Ray SDL, Pygments, Racket, Rakudo, Revolution, Rholang, RicScript, Roc, RocksDB, Ruby, skip, Slash, Slony, SmallBASIC, Semantic Patch Language, Snowball, souper, sporth, SWI Prolog, SymPy, tao3d, TensorFlow, TestML, TextFrame, Tiny C Compiler, txtzyme, Vcpkg, VLC, VSXu, WiredTiger, Wonkey, zl

Example from Riju:

print("Hello, world!\n");

Example from hello-world:

#!/usr/bin/perl
print "Hello World\n";

Example from the Hello World Collection:

# Hello world in perl

print "Hello World!\n";

Example from Linguist:

#!/usr/local/bin/perl
print "Perl\n"

Example from Wikipedia:

#!/usr/bin/perl
use strict;
use warnings;
use IO::Handle;

my ( $remaining, $total );

$remaining = $total = shift(@ARGV);

STDOUT->autoflush(1);

while ( $remaining ) {
    printf ( "Remaining %s/%s \r", $remaining--, $total );
    sleep 1;
}

print "\n";

Perl Keywords

__DATA__ else lock qw __END__ elsif lt qx __FILE__ eq m s __LINE__ exp ne sub __PACKAGE__ for no tr and foreach or unless cmp ge package until continue gt q while CORE if qq xor do le qr y

Language features

Feature	Supported	Example	Token
Standard Library	✓	print "Hello, World!\n";
Scientific Notation	✓
Binary Literals	✓	# 0b[01]+(_[01]+)*
Integers	✓	# \d+(_\d+)*
Floats	✓	# (?i)(\d(_\d)\.\d+(_\d)\|\d+(_\d)\.\d+(_\d)*)(e[+-]?\d+)?
Hexadecimals	✓	# 0x[0-9A-Fa-f]+(_[0-9A-Fa-f]+)*
Octals	✓	# 0_?[0-7]+(_[0-7]+)*
Conditionals	✓
While Loops	✓
Print() Debugging	✓		print
Range Operator	✓	# https://users.cs.cf.ac.uk/Dave.Marshall/PERL/node38.html @array = (1..10);
Operator Overloading	✓
Multiple Inheritance	✓
File Imports	✓	use Digest::MD5 'md5_hex';
Directives	✓	# In Perl, the keyword "use", which imports modules, can also be used to specify directives, such as use strict; or use utf8; use utf8;
Here Document	✓
Line Comments	✓	# A comment	#
MultiLine Comments	✓	=begin comment This is all part of multiline comment. You can use as many lines as you like These comments will be ignored by the compiler until the next =cut is encountered. =cut	=begin =cut
Comments	✓	# A comment
Regular Expression Syntax Sugar	✓	print "Hello World" =~ /(\w)/;
Strings	✓	"hello world"
Case Insensitive Identifiers	X
Semantic Indentation	X