Announce: Rakudo Star Release 2015.03

A useful, usable, “early adopter” distribution of Perl 6

On behalf of the Rakudo and Perl 6 development teams, I’m happy to
announce the March 2015 release of “Rakudo Star”, a useful and usable
distribution of Perl 6. The tarball for the March 2015 release is
available from

This Rakudo Star release comes with support for the MoarVM
backend (all module tests pass on supported platforms) along with
experimental support for the JVM backend (the modules Bailador,
Digest::MD5 and Grammar::Profiler::Simple are known to fail tests).

In the Perl 6 world, we make a distinction between the language
(“Perl 6”) and specific implementations of the language such as
“Rakudo Perl”. This Star release includes release 2015.03 of the
Rakudo Perl 6 compiler, version 2015.03 of MoarVM, plus various
modules, documentation, and other resources collected from the
Perl 6 community.

Some of the new compiler features added to this release include:

  • several renames of semi-internal methods. Please refer to the Rakudo
    2015.03 release notes
    for the full list
  • Allow Buf.AT-POS to return an l-value.
  • Implement method ^foo($) { ... } syntax.
  • Implemented PairMap (the simple case only, for now).
  • Implemented .antipairs (pairs with value => key).
  • Implemented pairup for creating pairs from lists.
  • Implemented LEXICAL, OUTERS and CALLERS pseudo-packages
  • Add array[T], usable for native int/num (MoarVM only for now)
  • Other native improvements, e.g. my int $a; $a++
  • Implement IO::Path.resolve on r-m/POSIX

In future, the nqp:: namespace willl only be available after a declaration
like use nqp;.

Changes to modules included in Rakudo Star:

  • DBIish supports local Sockets on mysql,
    and now correctly handles returned NULL values in the Pg backend
  • doc ships with much more documentation

There are some key features of Perl 6 that Rakudo Star does not yet
handle appropriately, although they will appear in upcoming releases.
Some of the not-quite-there features include:

  • advanced macros
  • threads and concurrency (in progress)
  • Unicode strings at levels other than codepoints
  • interactive readline that understands Unicode
  • non-blocking I/O (in progress)
  • much of Synopsis 9 and 11

There is an online resource at
that lists the known implemented and missing features of Rakudo’s
backends and other Perl 6 implementations.

In many places we’ve tried to make Rakudo smart enough to inform the
programmer that a given feature isn’t implemented, but there are many
that we’ve missed. Bug reports about missing and broken features are
welcomed at

See for links to much more information about
Perl 6, including documentation, example code, tutorials, reference
materials, specification documents, and other supporting resources. A
draft of a Perl 6 book is available as docs/UsingPerl6-draft.pdf in
the release tarball.

The development team thanks all of the contributors and sponsors for
making Rakudo Star possible. If you would like to contribute, see, ask on the
mailing list, or join us on IRC #perl6 on freenode.

About moritz

Just another Perl 6 hacker
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