Perl

Perl is a pl created in 1987 by Larry Wall.

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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...

• the Perl website
• the Perl Wikipedia page
• There are at least 169,830 Perl repos on GitHub
• PLDB estimates there are currently 13k job openings for Perl programmers.
• file extensions for Perl include pl, pm, t, pod, al, cgi, fcgi, perl, ph, plx and psgi
• 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 is listed on HOPL
• Perl ranks #15 in the TIOBE Index
• There is a CodeMirror package for syntax highlighting Perl
• There is a Monaco package for syntax highlighting Perl
• Pygments supports syntax highlighting for Perl
• GitHub supports syntax highlighting for Perl
• There are 4 Jupyter Kernels for Perl: 1,2,3,4
• There is a central package repository for Perl
• Indeed.com has 8,795 matches for "perl engineer".
• perl.org was registered in 1995
• See also: PEARL, C, Lisp, Pascal, sed, CoffeeScript, ECMAScript, Falcon, Groovy, JavaScript, Julia, LPC, Perl 6, 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
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• Improve our Perl file

Keywords in Perl

__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

# 0b[01]+(_[01]+)*

# \d+(_\d+)*

# (?i)(\d*(_\d*)*\.\d+(_\d*)*|\d+(_\d*)*\.\d+(_\d*)*)(e[+-]?\d+)?

# 0x[0-9A-Fa-f]+(_[0-9A-Fa-f]+)*

# 0_?[0-7]+(_[0-7]+)*

# https://users.cs.cf.ac.uk/Dave.Marshall/PERL/node38.html
@array = (1..10);

use Digest::MD5 'md5_hex';

# In Perl, the keyword "use", which imports modules, can also be used to specify directives, such as use strict; or use utf8;
use utf8;

# A comment

# This is a comment in perl
=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

sub first-and-last ( $first, $last ) {
   say "Name is $first $last";
}
my &surname-smith = &first-and-last.assuming( *, 'Smith' );
&surname-smith.( 'Joe' ); # OUTPUT: «Name is Joe Smith␤» 

print "Hello World".match(/\w/)

"hello world"

Books about Perl on goodreads

Books about Perl from ISBNdb

Publications about Perl from Semantic Scholar

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