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.
Introduced in Perl 5.6.0
Introduced in Perl 5.7.0
our can now have an experimental optional attribute unique
Introduced in Perl 5.8.0
Deprecated in Perl 5.10.0
Introduced in Perl 5.9.2
See also Socket
See also perlrun
See also perlrun
See also perldsc
See also perlguts
Introduced in Perl 5.13.7
%^H
Introduced in Perl 5.13.7
See also cophh_
in perlapi.
Introduced in Perl 5.18.0
Introduced in Perl 5.16.0
Introduced in Perl 5.16.0
Introduced in Perl 5.6.0
See also perlsub
installhtml
target in the Makefile.
(?{code})
See also perlre
(??{ code })
See also perlre
~~
)
Introduced in Perl 5.10.0
Modified in Perl 5.10.1, 5.12.0
$_
Introduced in Perl 5.10.0
(*ACCEPT)
Introduced in: Perl 5.10
See also perlintern
See also perllinux
See PL_keyword_plugin in perlapi for the mechanism.
Introduced in: Perl 5.11.2
Introduced in Perl 5.14.0
Introduced in: Perl 5.18
See also: Lexical Subroutines in perlsub
Introduced in: Perl 5.18
See also: Extended Bracketed Character Classes in perlrecharclass
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.
\N
regex character class
The \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
Introduced in Perl 5.6.1
See also perlfork
Introduced in Perl 5.6.0
See also perldebug, perldebtut
Introduced in Perl 5.6.0
Introduced in Perl 5.6.0
Introduced in Perl 5.005
Introduced in Perl 5.005
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 perlpolicy).
legacy
The experimental legacy
pragma was swallowed by the feature
pragma.
Introduced in: 5.11.2
Removed in: 5.11.3
The -A
command line switch
Introduced in Perl 5.9.0
Removed in Perl 5.9.5
Moved from Perl 5.10.1 to CPAN
Getopt::Long
upgraded to version 2.35
Removed in Perl 5.8.8
Introduced in Perl 5.6.0
Removed in Perl 5.9.0
Introduced in Perl 5.005
Removed in Perl 5.10
Introduced in Perl 5.005
Moved from Perl 5.9.0 to CPAN
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.