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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 I'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
       fork() emulation
               Introduced in Perl 5.6.1
               See also perlfork
       Weak references
               Introduced in Perl 5.6.0
       Internal file glob
               Introduced in Perl 5.6.0
               Accepted in XXX
       64-bit support
               Introduced in Perl 5.005
               Accepted in XXX
       die accepts a reference
               Introduced in Perl 5.005
               Accepted in Perl XXX
       Unicode support
               Introduced in Perl 5.6.0
               Accepted in Perl 5.8.0 XXX
       -Dusemultiplicity -Dusethreads
               Introduced in Perl 5.6.0
       Long Doubles Still Don't Work In Solaris
               Introduced in Perl 5.7.0
       GetOpt::Long Options can now take multiple values at once
       (experimental)
               "Getopt::Long" upgraded to version 2.35
               Removed in Perl 5.8.8
       5.005-style threading
               Introduced in Perl 5.005
               Removed in Perl 5.10 XXX
       Test::Harness::Straps
               Removed in Perl 5.10.1
       perlcc  Introduced in Perl 5.005
               Removed in Perl 5.9.0
       "our" can now have an experimental optional attribute "unique"
               Introduced in Perl 5.8.0
               Deprecated in Perl 5.10.0
       Assertions
               The "-A" command line switch
               Introduced in Perl 5.9.0
               Removed in Perl 5.9.5
       Linux abstract Unix domain sockets
               Introduced in Perl 5.9.2
               See also Socket
       Pod::HTML2Pod
       Pod::PXML
       threads
       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.
       av_create_and_push
       av_create_and_unshift_one
       av_create_and_unshift_one
       PL_keyword_plugin
       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
       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
       DB module
               Introduced in Perl 5.6.0
               See also perldebug, perldebtut
       The pseudo-hash data type
               Introduced in Perl 5.6.0
       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
       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
       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
               See also:
       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
   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.
       (none yet identified)
   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
AUTHORS
       brian d foy "<brian.d.foy AT gmail.com>"
COPYRIGHT
       Copyright 2010, brian d foy "<brian.d.foy AT gmail.com>"
LICENSE
       You can use and redistribute this document under the same terms as Perl
       itself.

perl v5.16.3                      2013-03-04                 PERLEXPERIMENT(1)