| perlexperiment - A listing of experimental features in Perl |
perlexperiment - A listing of experimental features in Perl
This document lists the current and past experimental features in the perl core. Although all of these are documented with their appropriate topics, this succinct listing gives you an overview and basic facts about their status.
So far we've merely tried to find and list the experimental features and infer their inception, versions, etc. There's a lot of speculation here.
~~)Modified in Perl 5.10.1, 5.12.0
Using this feature triggers warnings in the category
experimental::smartmatch.
The ticket for this feature is [perl #119317].
See perlapi/PL_keyword_plugin for the mechanism.
Introduced in Perl 5.11.2
The ticket for this feature is [perl #119451].
See also: Extended Bracketed Character Classes in the perlrecharclass manpage
Using this feature triggers warnings in the category
experimental::regex_sets.
Using this feature triggers warnings in the category
experimental::signatures.
The ticket for this feature is [perl #121481].
Using this feature triggers warnings in the category
experimental::refaliasing.
The ticket for this feature is [perl #122947].
Using this feature triggers warnings in the category
experimental::const_attr.
The ticket for this feature is [perl #123630].
Using this feature triggers warnings in the category
experimental::re_strict.
See also the perlrun manpage
Using this feature triggers warnings in the category
experimental::declared_refs.
The ticket for this feature is [perl #128654].
See also: Declaring a Reference to a Variable in the perlref manpage
installhtml target in the Makefile.Using this feature triggers warnings in the category
experimental::script_run.
See also: Script Runs in the perlre manpage
Using this feature triggers warnings in the category
experimental::alpha_assertions.
See also: Extended Patterns in the perlre manpage.
These features were so wildly successful and played so well with others that we decided to remove their experimental status and admit them as full, stable features in the world of Perl, lavishing all the benefits and luxuries thereof. They are also awarded +5 Stability and +3 Charisma.
See also the perldebug manpage, the perldebtut manpage
fork() emulationSee also the perlfork manpage
Accepted in Perl 5.8.0
Accepted in Perl 5.8.1
\N regex character class\N character class, not to be confused with the named character
sequence \N{NAME}, denotes any non-newline character in a regular
expression.
Introduced in Perl 5.12
Exact version of acceptance unclear, but no later than Perl 5.18.
(?{code}) and (??{ code })Accepted in Perl 5.20.0
See also the perlre manpage
Accepted before Perl 5.20.0. The Socket library is now primarily maintained on CPAN, rather than in the perl core.
See also the Socket manpage
Accepted in Perl 5.20.0
See also the perlsub manpage
(*ACCEPT)
Introduced in Perl 5.10
Accepted in Perl 5.20.0
Accepted in Perl 5.20.0
\s in regexp matches vertical tabAccepted in Perl 5.24.0
Accepted in Perl 5.26.0
Accepted in Perl 5.28.0
These features are no longer considered experimental and their functionality has disappeared. It's your own fault if you wrote production programs using these features after we explicitly told you not to (see the perlpolicy manpage).
Removed in Perl 5.10
Moved from Perl 5.9.0 to CPAN
Removed in Perl 5.9.0
Getopt::Long upgraded to version 2.35
Removed in Perl 5.8.8
-A command line switch
Introduced in Perl 5.9.0
Removed in Perl 5.9.5
legacylegacy pragma was swallowed by the feature pragma.
Introduced in Perl 5.11.2
Removed in Perl 5.11.3
$_experimental::lexical_topic.
Introduced in Perl 5.10.0
Removed in Perl 5.24.0
experimental::autoderef.
Superseded by Postfix dereference syntax.
Introduced in Perl 5.14.0
Removed in Perl 5.24.0
our can have an experimental optional attribute uniqueDeprecated in Perl 5.10.0
Removed in Perl 5.28.0
For a complete list of features check the feature manpage.
brian d foy <brian.d.foy@gmail.com>
Sébastien Aperghis-Tramoni <saper@cpan.org>
Copyright 2010, brian d foy <brian.d.foy@gmail.com>
You can use and redistribute this document under the same terms as Perl itself.
| perlexperiment - A listing of experimental features in Perl |