Perl 6

Perl 6 is an open source programming language created in 2015 by Larry Wall.

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Perl 6 (also known as Raku) is a member of the Perl family of programming languages.While historically several interpreter and compiler implementations were being written, today only the Rakudo Perl 6 implementation is in active development. It is introducing elements of many modern and historical languages. Compatibility with Perl 5 is not a goal, though a compatibility mode is part of the specification. Read more on Wikipedia...

Perl 6 website
Perl 6 Wikipedia page
There are at least 966 Perl 6 repos on GitHub
Perl 6 first developed in https://raku.org/community
file extensions for Perl 6 include 6pl, 6pm, nqp, p6, p6l, p6m, pl, pl6, pm, pm6 and t
The Google BigQuery Public Dataset GitHub snapshot shows 2k users using Perl 6 in 2k repos on GitHub
GitHub supports syntax highlighting for Perl 6
See also: (14 related languages)Perl, Haskell, JavaScript, Ruby, Smalltalk, RFC, Python, Java, Squeak, Regular Expressions, PEG, ANTLR, Icon, ISBN

Example from Linguist:

# used in t/spec/S11-modules/nested.t 

BEGIN { @*INC.push('t/spec/packages') };

module A::A {
    use A::B;
}

# vim: ft=perl6

Example from Wikipedia:

multi sub hanoi(0, $, $, $) { }                         # No disk, so do not do anything
 multi sub hanoi($n, $a = 'A', $b = 'B', $c = 'C') {     # Start with $n disks and three pegs A, B, C
     hanoi $n - 1, $a, $c, $b;                           # firstly move top $n - 1 disks from A to B
     say "Move disk $n from peg $a to peg $c";           # then move last disk from A to C
     hanoi $n - 1, $b, $a, $c;                           # lastly move $n - 1 disks from B to C
 }

Feature	Supported	Token	Example
Comments	✓		# A comment
Line Comments	✓	#	# A comment
Operator Overloading	✓
Multiple Inheritance	✓
Semantic Indentation	X

Perl 6 - Programming language

Language features