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perlexperiment

PERLEXPERIMENT(1)					 Perl Programmers Reference Guide					 PERLEXPERIMENT(1)

NAME

       perlexperiment - A listing of experimental features in Perl

DESCRIPTION

       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.

   Current experiments
       -Dusemultiplicity -Duseithreads
	       Introduced in Perl 5.6.0

       Long Doubles Still Don't Work In Solaris
	       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

       Linux abstract Unix domain sockets
	       Introduced in Perl 5.9.2

	       See also Socket

       Pod::HTML2Pod
       Pod::PXML
       The <:pop> IO pseudolayer
	       See also perlrun

       The <:win32> IO pseudolayer
	       See also perlrun

       MLDBM   See also perldsc

       internal functions with M flag
	       See also perlguts

       lex_start API
	       Introduced in Perl 5.13.7

       internal API for "%^H"
	       Introduced in Perl 5.13.7

	       See also "cophh_" in perlapi.

       alloccopstash
	       Introduced in Perl 5.18.0

       av_create_and_push
       av_create_and_unshift_one
       av_create_and_unshift_one
       cop_store_label
	       Introduced in Perl 5.16.0

       PL_keyword_plugin
       gv_fetchmethod_*_flags
	       Introduced in Perl 5.16.0

       hv_iternext_flags
       lex_bufutf8
       lex_discard_to
       lex_grow_linestr
       lex_next_chunk
       lex_peek_unichar
       lex_read_space
       lex_read_to
       lex_read_unichar
       lex_stuff_pv
       lex_stuff_pvn
       lex_stuff_pvs
       lex_stuff_sv
       lex_unstuff
       op_scope
       op_lvalue
       parse_fullstmt
       parse_stmtseq
       PL_parser->bufend
       PL_parser->bufptr
       PL_parser->linestart
       PL_parser->linestr
       Perl_signbit
       pad_findmy
       sv_utf8_decode
       sv_utf8_downgrade
       bytes_from_utf8
       bytes_to_utf8
       utf8_to_bytes
       Lvalue subroutines
	       Introduced in Perl 5.6.0

	       See also perlsub

       There is an "installhtml" target in the Makefile.
       Unicode in Perl on EBCDIC
       "(?{code})"
	       See also perlre

       "(??{ code })"
	       See also perlre

       Smart match ("~~")
	       Introduced in Perl 5.10.0

	       Modified in Perl 5.10.1, 5.12.0

       Lexical $_
	       Introduced in Perl 5.10.0

       Backtracking control verbs
	       "(*ACCEPT)"

	       Introduced in: Perl 5.10

	       See also: "Special Backtracking Control Verbs" in perlre

       Code expressions, conditional expressions, and independent expressions in regexes
       gv_try_downgrade
	       See also perlintern

       Experimental Support for Sun Studio Compilers for Linux OS
	       See also perllinux

       Pluggable keywords
	       See "PL_keyword_plugin" in perlapi for the mechanism.

	       Introduced in: Perl 5.11.2

       Array and hash container functions accept references
	       Introduced in Perl 5.14.0

       Lexical subroutines
	       Introduced in: Perl 5.18

	       See also: "Lexical Subroutines" in perlsub

       Regular Expression Set Operations
	       Introduced in: Perl 5.18

	       See also: "Extended Bracketed Character Classes" in perlrecharclass

   Accepted features
       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.

       The "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

       fork() emulation
	       Introduced in Perl 5.6.1

	       See also perlfork

       DB module
	       Introduced in Perl 5.6.0

	       See also perldebug, perldebtut

       Weak references
	       Introduced in Perl 5.6.0

       Internal file glob
	       Introduced in Perl 5.6.0

       die accepts a reference
	       Introduced in Perl 5.005

       64-bit support
	       Introduced in Perl 5.005

   Removed features
       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

       Assertions
	       The "-A" command line switch

	       Introduced in Perl 5.9.0

	       Removed in Perl 5.9.5

       Test::Harness::Straps
	       Moved from Perl 5.10.1 to CPAN

       GetOpt::Long Options can now take multiple values at once (experimental)
	       "Getopt::Long" upgraded to version 2.35

	       Removed in Perl 5.8.8

       The pseudo-hash data type
	       Introduced in Perl 5.6.0

	       Removed in Perl 5.9.0

       5.005-style threading
	       Introduced in Perl 5.005

	       Removed in Perl 5.10

       perlcc  Introduced in Perl 5.005

	       Moved from Perl 5.9.0 to CPAN

AUTHORS

       brian d foy "<brian.d.foy@gmail.com>"

       Sebastien Aperghis-Tramoni "<saper@cpan.org>"

COPYRIGHT

       Copyright 2010, brian d foy "<brian.d.foy@gmail.com>"

LICENSE

       You can use and redistribute this document under the same terms as Perl itself.

perl v5.18.2							    2014-01-06							 PERLEXPERIMENT(1)