Perl 6
Using Perl 5 Embedding: Revision 9

Perl 5 embedding is enabled by default in Pugs. This allows to you use some Perl 5 modules from Perl 6.

Loading and importing from Perl 5

use perl5:CGI;

Currently explict imports work, but implicit ones to not. This works:

use perl5:Time::gmtime <gmtime>;
say gmtime.mday;

Object-Oriented Classes

After loading a Perl5 OO clas, you can use Perl 6 OO notation to call methods on it. See CGI examples below.

Examples of Passing Data to Perl 5

Quick Reference

Array @a
Array Ref \@a
Hash Ref {...} or \%h
Hash %h.kv
Scalar 'str'
Scalar Ref \$str


 use perl5:CGI;
 my $q ='a=Hello');
 say $q.param('a');

Hash references

 use perl5:CGI;
 my $q = { a => "Hello" } );
 say $q.param('a');

This works too:

 my %h = ( a => "Hello" );
 use perl5:CGI;
 my $q =\%h);
 say $q.param('a');

Hashes and Named Arguments


Note, Perl 6 does not allow named arguments to start with a dash but Perl 5 does.
Here's an example of using it to pass a named argument starting with a dash:

use perl5:CGI;
my $q =;
my $cookie = $q.cookie( %( '-name' => 'Hello', value => 'World' ).kv );
print $cookie;

Compiling code as Perl 5

As a final tool, you can compile arbitary code as Perl 5, and have a Perl 5 structure returned:

my $perl5_result = eval('some code',:lang<perl5>);


  • is a Perl 6 program that uses several Perl 5 modules
  • t/perl5 is the code in the test suite that tests Perl 5 embedding

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