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)