New variables A new variable, ${^RE_DEBUG_FLAGS}, controls what debug flags are in effect for the regular ... A new variable ${^UTF8LOCALE} indicates where a UTF-8 locale was detected by perl at startup.
perlmroapi This describes the new interface for pluggable Method Resolution Orders. ... perlthanks This describes the new perlthanks utility.
New or Changed Diagnostics New Diagnostics SV allocation tracing has been added to the diagnostics ... See perldiag for details of these new messages.
New Tests Many new tests have been added.
New tests lib/attrs Compatibility tests for sub : attrs vs the older use attrs. ... lib/env Tests for new environment scalar capability (e.g., use Env qw($BAR);).
New tests lib/attrs Compatibility tests for sub : attrs vs the older use attrs. ... lib/env Tests for new environment scalar capability (e.g., use Env qw($BAR);).
New Tests Several new tests have been added, especially for the lib subsection.
New Tests Several new tests have been added, especially for the lib and ext subsections. ... Many of the new tests are of course introduced by the new modules, but still in general Perl is now more
New Documentation perlhaiku This contains instructions on how to build perl for the Haiku platform ... perlmroapi This describes the new interface for pluggable Method Resolution Orders.
Documentation New Documentation perlhaiku contains instructions on how to build perl for the Haiku ... perlmroapi describes the new interface for pluggable Method Resolution Orders.
New Documentation The perlpragma manpage documents how to write one's own lexical pragmas in pure Perl ... A new manual page, perlunifaq (the Perl Unicode FAQ), has been added (Juerd Waalboer).
New Tests There are significantly more tests for the B suite of modules.
New Tests Many modules updated from CPAN incorporate new tests.
New Documentation Locale::Maketext::TPJ13 is an article about software localization, originally published ... The new files are perlapollo, perlbeos, perldgux, perlhurd, perlmint, perlnetware, perlplan9, perlqnx
New Tests t/op/while_readdir.t Test that a bare readdir in while loop sets $_.
New Documentation perlpolicy extends the "Social contract about contributed modules" into the beginnings
New Documentation perlclib Internal replacements for standard C library functions.
New parser perl's parser is now generated by bison (it used to be generated by byacc.)
New Documentation The perlglossary manpage is a glossary of terms used in the Perl documentation, technical
New Platforms Compile support added for: DragonFlyBSD MidnightBSD MirOS BSD RISC OS Cray XT4/Catamount
New Documentation perl56delta details the changes between the 5.005 release and the 5.6.0 release. ... perlnewmod tells about writing and submitting a new module.
New Documentation The documentation has been revised in places to produce more standard manpages.
New parser perl's parser is now generated by bison (it used to be generated by byacc.)
New Platforms Haiku Perl's developers have merged patches from Haiku's maintainers.
New probes Configure will now detect clearenv and unsetenv, thanks to a patch from Alan Burlison.
New probes The configuration process now detects whether strlcat() and strlcpy() are available.
Modules and Pragmata New Modules File::Temp allows one to create temporary files and directories in
New Tests In Perl 5.8.0 there were about 69000 separate tests in about 700 test files, in Perl 5.9.0
New Tests In Perl 5.8.0 there were about 69000 separate tests in about 700 test files, in Perl 5.8.1
Modules and Pragmata New modules encoding::warnings, by Audrey Tang, is a module to emit warnings
New Tests t/op/filehandle.t Tests some suitably portable filetest operators to check that they work
New Documentation As usual, the documentation received its share of corrections, clarifications and
Modules and Pragmata New Modules Module::Pluggable is a simple framework to create modules that accept
New Platforms BeOS is now supported. See README.beos. DOS is now supported under the DJGPP tools.
New Tests Many modules updated from CPAN incorporate new tests. ... t/lib/proxy_constant_subs.t Tests for the new form of constant subroutines.
New or Changed Diagnostics A new deprecation warning, Deprecated use of my() in false conditional, has ... The fatal error DESTROY created new reference to dead object is now documented in perldiag.
Modules and Pragmata New Modules and Pragmata This release does not introduce any new modules or pragmata
New Documentation perl573delta has been added to list the differences between the (now quite obsolete
New or Changed Diagnostics The fatal error "DESTROY created new reference to dead object" is now documented
Documentation New manpage, perlunifaq A new manual page, perlunifaq (the Perl Unicode FAQ), has been
Modules and Pragmata New Modules B Perl compiler and tools. See B.
New Configure flags The following new flags may be enabled on the Configure command line by running ... usemultiplicity usethreads useithreads (new interpreter threads: no Perl API yet) usethreads
New Configure flags The following new flags may be enabled on the Configure command line by running ... usemultiplicity usethreads useithreads (new interpreter threads: no Perl API yet) usethreads
New or Changed Diagnostics New warning category illegalproto The two warnings : Illegal character ... Prototype after '%c' for %s : %s have been moved from the syntax top-level warnings category into a new
New or Changed Diagnostics Attempt to set length of freed array This is a new warning, produced in
New Tests Perl's developers have added a number of new tests to the core. ... In addition to the items listed below, many modules updated from CPAN incorporate new tests.
New Tests Many modules updated from CPAN incorporate new tests.
New Documentation perl56delta details the changes between the 5.005 release and the 5.6.0 release. ... perlnewmod tells about writing and submitting a new module. [561+] perlpacktut is a pack() tutorial.
New Tests Many modules updated from CPAN incorporate new tests.
New or Changed Diagnostics Attempt to set length of freed array This is a new warning, produced in
New Documentation perl573delta has been added to list the differences between the (now quite obsolete
New or Changed Diagnostics New Diagnostics SV allocation tracing has been added to the diagnostics ... See perldiag for details of these new messages.
Modules and Pragmata New Modules and Pragmata legacy Preserves legacy behaviors or enable new non-default
New or Changed Diagnostics panic: sv_chop %s This new fatal error occurs when the C routine Perl_sv_chop
New or Changed Diagnostics A new warning, !=~ should be ! ... There is a new compilation error, Illegal declaration of subroutine, for an obscure case of syntax errors
New and changed syntax $coderef->(PARAMS) A subroutine reference may now be suffixed with an arrow ... This new syntax follows the pattern of $hashref->{FOO} and $aryref->[$foo]: You may now write &$subref
New or Changed Diagnostics Two new debugging options have been added: if you have compiled your Perl
New or Changed Diagnostics There is a new taint error, "%ENV is aliased to %s".
New or Changed Diagnostics Several new diagnostics, see perldiag for details.
New or Changed Diagnostics All the warnings related to pack() and unpack() were made more informative
New or Changed Diagnostics All the warnings related to pack() and unpack() were made more informative
Modules and Pragmata New Modules and Pragmata autodie This is a new lexically-scoped alternative
New Modules and Pragmata autodie This is a new lexically-scoped alternative for the Fatal module.
New manpage, perlunitut The perlunitut manpage is an tutorial for programming with Unicode and string
New manpage, perlreguts The perlreguts manpage, courtesy of Yves Orton, describes internals of the Perl
New or Changed Diagnostics Carp and the internal diagnostic routines used by Devel::Peek have been made
Modules and Pragmas New Pragma, mro A new pragma, mro (for Method Resolution Order) has been added.
New or Changed Diagnostics Use of uninitialized value Perl will now try to tell you the name of the ... ~ A new warning, !=~ should be !
Documentation New manpage, perlpragma The perlpragma manpage documents how to write one's own lexical
New or Changed Diagnostics Deprecations Two deprecation warnings have been added: (Rafael) Opening
New or Changed Diagnostics panic: sv_chop %s This new fatal error occurs when the C routine Perl_sv_chop
New or Changed Diagnostics panic: sv_chop %s This new fatal error occurs when the C routine Perl_sv_chop
New or Changed Diagnostics For -t and -T, Too late for "-T" option has been changed to the more informative
New or Changed Diagnostics State variable %s will be reinitialized One can assign initial values to
New or Changed Diagnostics split now warns when called in void context printf-style functions called
New INIT keyword INIT subs are like BEGIN and END, but they get run just before the perl runtime begins
New Pragma, mro A new pragma, mro (for Method Resolution Order) has been added.
Modules and Pragmata New Core Modules A new pragma, feature, has been added; see above in "Core Enhancements
New qr// operator The qr// operator, which is syntactically similar to the other quote-like operators
New lock keyword The lock keyword is the fundamental synchronization primitive in threaded perl.
Installation and Configuration Improvements New Or Improved Platforms AIX should now work better with ... AtheOS ( http://www.atheos.cx/ ) is a new platform.
New Or Improved Platforms Perl is being ported to Symbian OS.
Modules and Pragmata New Modules and Pragmata autodie autodie is a new lexically-scoped alternative
Modules and Pragmata New Modules B::Concise, by Stephen McCamant, is a new compiler backend for walking
New modules encoding::warnings, by Audrey Tang, is a module to emit warnings whenever an ASCII character
New Diagnostics Several new conditions will trigger warnings that were silent before. ... The following new warnings and errors outline these.
New or Changed Diagnostics All regular expression compilation error messages are now hopefully easier
New internal variables ${^CHILD_ERROR_NATIVE} This variable gives the native status returned by the
New internal variables ${^RE_DEBUG_FLAGS} This variable controls what debug flags are in effect for
New or Changed Diagnostics The 'syntax' category was removed from 5 warnings that should only be in
New type SVt_BIND A new type SVt_BIND has been added, in readiness for the project to implement Perl
New or Changed Diagnostics In the regular expression diagnostics the << HERE marker introduced in 5.7.0
New Or Improved Platforms Perl has been reported to work on Symbian OS.
New or Changed Diagnostics Perl -V has several improvements correctly outputs local patch names that
Hash::Util is the interface to the new restricted hashes feature. ... sort is a new pragma for controlling the behaviour of sort().
New or Changed Diagnostics The fatal error Malformed UTF-8 returned by \N is now produced if the charnames ... The new meaning of \N as [^\n] is not valid in a bracketed character class, just like . in a character
New Core Modules Hash::Util::FieldHash, by Anno Siegel, has been added.
About the new versioning system Perl is now developed on two tracks: a maintenance track that makes ... Perl 5.005 is the combined product of the new dual-track development scheme.
New or Changed Diagnostics Please see perldiag for more details. ... Warnings relating to the use of the new restricted hashes feature have been added.
New Diagnostics Ambiguous call resolved as CORE::%s(), qualify as such or use & (W) A subroutine you
New Core Modules Locale::Maketext::Simple, needed by CPANPLUS, is a simple wrapper around Locale::Maketext
New "Pseudo-hashes are deprecated" This warning should have been already in 5.8.0, since they are.
New Unicode Properties Unicode scripts are now supported.
Modules and Pragmata New Modules and Distributions Attribute::Handlers - Simpler definition of attribute
New Or Improved Platforms For the list of platforms known to support Perl, see "Supported Platforms" ... AtheOS ( http://www.atheos.cx/ ) is a new platform. BeOS has been reclaimed.
New Or Improved Platforms For the list of platforms known to support Perl, see "Supported Platforms"
New and changed builtin constants __PACKAGE__ The current package name at compile time, or the undefined
New builtin methods The UNIVERSAL package automatically contains the following methods that are inherited
New and changed builtin variables $^E Extended error message on some platforms. ... Not actually new, but newly documented.
It is the recommended method for new code. ... (Not actually new; just never documented before.)
New "Illegal declaration of anonymous subroutine" You must specify the block of code for sub.
New "Illegal declaration of anonymous subroutine" You must specify the block of code for sub.
New Opcode module and revised Safe module A new Opcode module supports the creation, manipulation and ... The revised Safe module has a new API and is implemented using the new Opcode module.
New "Use of freed value in iteration" Something modified the values being iterated over.
New "Use of freed value in iteration" Something modified the values being iterated over.
New "read() on %s filehandle %s" You cannot read() (or sysread()) from a closed or unopened filehandle
New "read() on %s filehandle %s" You cannot read() (or sysread()) from a closed or unopened filehandle
New "5.005 threads are deprecated" This warning should have been already in 5.8.0, since they are.
New -E command-line switch -E is equivalent to -e, but it implicitly enables all optional features (
New -E command-line switch -E is equivalent to -e, but it implicitly enables all optional features (
Core Enhancements New package NAME VERSION syntax This new syntax allows a module author to set the ... However, package NAME VERSION requires a new, 'strict' version number format.
New support for Abstract namespace sockets Abstract namespace sockets are Linux-specific socket type
New support for Abstract namespace sockets Abstract namespace sockets are Linux-specific socket type
New or Changed Diagnostics "%s" variable %s masks earlier declaration in same %s (W misc) A "my" or ... written something like this: sub doit { use attrs qw(locked); } You should use the new
New or Changed Diagnostics "%s" variable %s masks earlier declaration in same %s (W misc) A "my" or ... written something like this: sub doit { use attrs qw(locked); } You should use the new
New "Missing control char name in \c" Self-explanatory.
New "Missing control char name in \c" Self-explanatory.
Relaxed new mandatory warnings introduced in 5.004 Many new warnings that were introduced in 5.004 have ... See "New Diagnostics".
New "To%s: illegal mapping '%s'" An illegal user-defined Unicode casemapping was specified.
New "To%s: illegal mapping '%s'" An illegal user-defined Unicode casemapping was specified.
New syntax for declaring subroutine attributes Formerly, if you wanted to mark a subroutine as being
New syntax for declaring subroutine attributes Formerly, if you wanted to mark a subroutine as being
New "Newline in left-justified string for %s" The padding spaces would appear after the newline, which
New "Newline in left-justified string for %s" The padding spaces would appear after the newline, which
New variable $^C reflects -c switch $^C has a boolean value that reflects whether perl is being run
New variable $^C reflects -c switch $^C has a boolean value that reflects whether perl is being run
New "Tied variable freed while still in use" Something pulled the plug on a live tied variable, Perl
New "Tied variable freed while still in use" Something pulled the plug on a live tied variable, Perl
New "Possible precedence problem on bitwise %c operator" If you think this $x & $y == 0 tests
New "Possible precedence problem on bitwise %c operator" If you think this $x & $y == 0 tests
New variable $^V contains Perl version as a string $^V contains the Perl version number as a string
New variable $^V contains Perl version as a string $^V contains the Perl version number as a string
New Unicode Semantics (no more use utf8, almost) Previously in Perl 5.6 to use Unicode one would say
Highlights In 5.8.0 Better Unicode support New IO Implementation New Thread Implementation Better ... Numeric Accuracy Safe Signals Many New Modules More Extensive Regression Testing
Modules and Pragmata New Modules and Pragmata This release does not introduce any new modules or pragmata
Documentation New manpage, perlunifaq A new manual page, perlunifaq (the Perl Unicode FAQ), has been
The recommended way to write barewords in the indirect object slot is new Foo:: @args. ... Note that the method new() is called with a first argument of Foo, not Foo:: when you do that.
New or Changed Diagnostics Attempt to set length of freed array This is a new warning, produced in
New or Changed Diagnostics Attempt to set length of freed array This is a new warning, produced in
Some new keywords have been introduced. ... See "New INIT keyword", "New lock keyword", and "New qr// operator".
perldebug Although not new, this has been massively updated. ... perlsec Although not new, this has been massively updated.
Modules and Pragmata New Modules and Pragmata legacy Preserves legacy behaviors or enable new non-default
New or Changed Diagnostics panic: sv_chop %s This new fatal error occurs when the C routine Perl_sv_chop
PERL_DONT_CREATE_GVSV The new compilation flag PERL_DONT_CREATE_GVSV, introduced as an option in perl ... It prevents perl from creating an empty scalar with every new typeglob.
PERL_DONT_CREATE_GVSV The new compilation flag PERL_DONT_CREATE_GVSV, introduced as an option in perl ... It prevents perl from creating an empty scalar with every new typeglob.
Pluggable keywords Extension modules can now cleanly hook into the Perl parser to define new kinds of ... The Perl core source distribution also includes a new module XS::APItest::KeywordRPN, which implements
The new API macro newSVpvs() can be used in place of constructions such as newSVpvn("ISA", 3). ... The new API function Perl_newSV_type() can be used as a more efficient replacement of the common idiom
Regular Expressions Perl's regular expression engine has been seriously overhauled, and many new constructs ... >RE) \z New operator for precompiled regular expressions See "New qr// operator".
Pluggable keywords Extension modules can now cleanly hook into the Perl parser to define new kinds of ... The Perl core source distribution also includes a new module XS::APItest::KeywordRPN, which implements
d_pseudofork and d_printf_format_null A new configuration variable, available as $Config{d_pseudofork ... A new configuration variable, d_printf_format_null, has been added, to see if printf-like formats are
Each new perl version tends to remove some undesirable warnings, while adding new warnings that may catch
Where possible, buffered data discarded from duped input filehandle open(NEW, "<&OLD") now attempts ... On platforms where doing this is allowed, the next read operation on NEW will return the same data as
Where possible, buffered data discarded from duped input filehandle open(NEW, "<&OLD") now attempts ... On platforms where doing this is allowed, the next read operation on NEW will return the same data as
The function Perl_newSV_type(type) has been added, equivalent to Perl_newSV() followed by Perl_sv_upgrade ... The function Perl_newSVpvn_flags() has been added, equivalent to Perl_newSVpvn() and then performing
The function Perl_newSVpvn_flags() has been added, equivalent to Perl_newSVpvn() and then performing ... A wrapper, newSVpvn_utf8() is available for this. SVs_TEMP Call sv_2mortal() on the new SV.
Documentation New Documentation perlhaiku contains instructions on how to build perl for the Haiku ... perlmroapi describes the new interface for pluggable Method Resolution Orders.
h2xs uses the new ExtUtils::Constant module which will affect newly created extensions that define constants ... Since the new code is more correct (if you have two constants where the first one is a prefix of the
The new qsort() is resistant to inconsistent comparison functions, so Perl's sort() will not provoke ... In our testing, the new qsort() required the minimal number of pair-wise compares on average, among all
Pragmata Changes feature The new pragma feature is used to enable new features that might break old ... mro This new pragma enables to change the algorithm used to resolve inherited methods.
It comes with the new Digest::SHA module. ... Use the new -a option to run all tests.
Support for More Operating Systems Support for the following operating systems is new in Perl 5.004.
A new special variable, ${^RE_TRIE_MAXBUF}, has been added to fine-tune this optimization. ... Often the tricks used to do so will disable the new optimisations.
Threading bugs Hashes with the :unique attribute weren't made read-only in new threads.
Modules and Pragmata New Modules and Pragmata autodie This is a new lexically-scoped alternative
Utility Changes Perl has a new -dt command-line flag, which enables threads support in the debugger.
Platform Specific Notes Linux Support Ubuntu 11.04's new multi-arch library layout.
shasum This command-line utility, used to print or to check SHA digests, comes with the new Digest::
Byte count feature in pack() A new pack() template character, ".
Utility Changes find2perl enhancements find2perl has new options -iname, -path and -ipath.
Utility Changes find2perl enhancements find2perl has new options -iname, -path and -ipath.
FETCHSIZE returned a negative value New error indicating that a tied array has claimed to have a negative
Use the new -a option to run all tests.
Core Enhancements The feature pragma The feature pragma is used to enable new syntax that would break ... Currently the following new features are available: switch (adds a switch statement), say (adds a say
Core Enhancements The feature pragma The feature pragma is used to enable new syntax that would break ... Currently the following new features are available: switch (adds a switch statement), say (adds a say
New Documentation perlclib Internal replacements for standard C library functions.
pack() format 'Z' supported The new format type 'Z' is useful for packing and unpacking null-terminated
pack() format 'Z' supported The new format type 'Z' is useful for packing and unpacking null-terminated
readdir()/closedir()/etc. attempted on invalid dirhandle These new warnings are now emitted when a dirhandle
Math::Trig This new module provides a simpler interface to parts of Math::Complex for those who need
perlivp enhancements perlivp implements new option -a and will not check for *.ph files by default any
cpan2dist cpan2dist is a new utility, that comes with CPANPLUS.
There is also a new base class for TIEARRAY implementations. See Tie::Array.
Modules and Pragmas New Pragma, mro A new pragma, mro (for Method Resolution Order) has been added.
[RT #40708] A new entry has been added to the MAGIC vtable - svt_local. ... This is used when copying magic to the new value during local, allowing certain problems with localising
The function Perl_newSV_type(type) has been added, equivalent to Perl_newSV() followed by Perl_sv_upgrade ... The function Perl_newSVpvn_flags() has been added, equivalent to Perl_newSVpvn() and then performing
supported The new format type modifier '!'
supported The new format type modifier '!'
h2xs uses the new ExtUtils::Constant module which will affect newly created extensions that define constants ... Since the new code is more correct (if you have two constants where the first one is a prefix of the
Core Enhancements New package NAME VERSION syntax This new syntax allows a module author to set the ... However, package NAME VERSION requires a new, 'strict' version number format.
Documentation New manpage, perlpragma The perlpragma manpage documents how to write one's own lexical
New or Changed Diagnostics Deprecations Two deprecation warnings have been added: (Rafael) Opening
say() say() is a new built-in, only available when use feature 'say' is in effect, that is similar to
A new warning, $# is no longer supported, has been added.
Dsitelib or -Dsitearch to set special values for library directories, you might wish to consider using the new ... earlier version of perl, you should be sure to check that Configure makes sensible choices for the new
Utility Changes The corelist utility is now installed with perl (see "New modules" above). ... Perl has a new -dt command-line flag, which enables threads support in the debugger.
Dsitelib or -Dsitearch to set special values for library directories, you might wish to consider using the new ... earlier version of perl, you should be sure to check that Configure makes sensible choices for the new
Core Enhancements The feature pragma The feature pragma is used to enable new syntax that would break ... Currently the following new features are available: switch (adds a switch statement), ~~ (adds a Perl
Core Enhancements The feature pragma The feature pragma is used to enable new syntax that would break ... Currently the following new features are available: switch (adds a switch statement), ~~ (adds a Perl
The ... operator A new operator, ..., nicknamed the Yada Yada operator, has been added.
Byte/character count feature in unpack() A new unpack() template character, ".
say() say() is a new built-in, only available when use feature 'say' is in effect, that is similar to
Support for interpolating named characters The new \N escape interpolates named characters within strings
Support for interpolating named characters The new \N escape interpolates named characters within strings
The ... operator A new operator, ..., nicknamed the Yada Yada operator, has been added.
Invalid escape in the specified encoding in regexp; marked by <-- HERE in m/%s/ New error, introduced
@- and @+ provide starting/ending offsets of regex submatches The new magic variables @- and @+ provide
@- and @+ provide starting/ending offsets of regex matches The new magic variables @- and @+ provide
Deprecation Warnings There is one new feature deprecation.
The new behavior is to produce an empty list if (and only if) the original list was empty. ... The new behavior ensures it has three undefined elements.
The following pod documents are brand new: perlclib Internal replacements for standard C library ... perlebcdic Considerations for running Perl on EBCDIC platforms perlnewmod Perl modules: preparing a new
The new behavior is to produce an empty list if (and only if) the original list was empty. ... The new behavior ensures it has three undefined elements.
This feature introduces three new keywords, given, when, and default: given ($foo) { when ... match is called smart match, and it's also possible to use it outside of switch statements, via the new
This feature introduces three new keywords, given, when, and default: given ($foo) { when ... match is called smart match, and it's also possible to use it outside of switch statements, via the new
Often the tricks used to do so will disable the new optimisations. ... Hopefully the utility modules used for this purpose will be educated about these new optimisations by
The -M, -a, -k, and -o options are new.
The -M, -a, -k, and -o options are new.
It now reports the current internal type, and the new type requested.
panic: attempt to call %s in %s This new fatal error occurs when the ACL version file test operator
Changed Internals These news matter to you only if you either write XS code or like to know about or
For new projects the core perl team strongly recommends that you use dedicated, single purpose security
Default installation structure has changed The new Configure defaults are designed to allow a smooth
experimental legacy pragma, introduced in 5.11.2, has been removed, and its functionality replaced by the new ... Added new warnings::fatal_enabled() function.
experimental legacy pragma, introduced in 5.11.2, has been removed, and its functionality replaced by the new ... Added new warnings::fatal_enabled() function.
The major reason for the discontinuity is the new IO architecture called PerlIO. ... PerlIO is the default configuration because without it many new features of Perl 5.8 cannot be used.
The major reason for the discontinuity is the new IO architecture called PerlIO. ... PerlIO is the default configuration because without it many new features of Perl 5.8 cannot be used.
Modules and Pragmata New Core Modules A new pragma, feature, has been added; see above in "Core Enhancements
Steve Peters provided new *_set macros and reworked the core to use these rather than assigning to macros ... A new file, mathoms.c, has been added.
Mathoms A new file, mathoms.c, has been added.
${^CHILD_ERROR_NATIVE} A new internal variable, ${^CHILD_ERROR_NATIVE}, gives the native status returned
perl_eval_pv A new function handy for eval'ing strings of Perl code inside C code. ... New extensions must use the new hash access functions and macros if they wish to use SV* keys.
No new syntax is involved: the Hash::Util module is the interface.
Maximal count of pending signals (%s) exceeded This new fatal error occurs when the perl process has
Modules and Pragmata New Modules File::Temp allows one to create temporary files and directories in
perlthanks Perl 5.8.9 adds a new utility perlthanks, which is a variant of perlbug, but for sending
Their use is discouraged in new code, particularly PL_na, which is a small performance hit.
h2xs enhancements h2xs implements a new option --use-xsloader to force use of XSLoader even in backwards
Therefore we have now defined a new set of artificial "unicode" property names which will be used to ... mappings: POSIX Esc Class New-Property !
Therefore we have now defined a new set of artificial "unicode" property names which will be used to ... mappings: POSIX Esc Class New-Property !
Utility Changes config_data config_data is a new utility that comes with Module::Build.
Utility Changes config_data config_data is a new utility that comes with Module::Build.
(The good news is that B::Bytecode and ByteLoader are better than they used to be.)
The information is attached to the new offsets member of the struct regexp.
Steve Peters provided new *_set macros and reworked the core to use these rather than assigning to macros
(The good news is that B::Bytecode and ByteLoader are better than they used to be.)
Utility Changes h2xs enhancements h2xs implements new option --use-xsloader to force use of XSLoader
Utility Changes h2xs enhancements h2xs implements new option --use-xsloader to force use of XSLoader
Stacked filetest operators As a new form of syntactic sugar, it's now possible to stack up filetest
Byte-order modifiers for pack() and unpack() There are two new byte-order modifiers, > (big-endian)
Stacked filetest operators As a new form of syntactic sugar, it's now possible to stack up filetest
Byte-order modifiers for pack() and unpack() There are two new byte-order modifiers, > (big-endian)
These are not new failures--Perl 5.005_0x has the same bugs, but didn't have these tests.
These are not new failures--Perl 5.005_0x has the same bugs, but didn't have these tests.
Two new severe warnings, $#/$* is no longer supported, have been added.
If you do not like this new behaviour, specify prefix, siteprefix, and vendorprefix explicitly. ... A new optional location for Perl libraries, otherlibdirs, is available.
If you do not like this new behaviour, specify prefix, siteprefix, and vendorprefix explicitly. ... A new optional location for Perl libraries, otherlibdirs, is available.
Adds new BUILD_REQUIRES key to indicate build-only prerequisites. ... Also adds support for mingw64 and the new "package NAME VERSION" syntax.
C Source Compatibility There have been a large number of changes in the internals to support the new ... New extensions should not refer to perl globals by their unqualified names.
Cwd upgraded to version 3.01 (as part of the new PathTools distribution) Devel::PPPort upgraded to version ... 3.03 File::Spec upgraded to version 3.01 (as part of the new PathTools distribution) Encode upgraded
Installation and Configuration Improvements New Or Improved Platforms AIX should now work better with ... AtheOS ( http://www.atheos.cx/ ) is a new platform.
A new command-line switch, -A, is used to activate assertions, which are declared with the assertions
A new command-line switch, -A, is used to activate assertions, which are declared with the assertions
A new utility, prove, makes it easy to run an individual regression test at the command line. prove is
A new command-line option, -t is available. ... It will be called in the context of the new thread, so all modifications are made in the new area.
Performance Enhancements A new internal cache means that isa() will often be faster.
We're happy to announce that Perl 5.12 includes support for several new platforms.
These are not new failures--Perl 5.005_0x has the same bugs, but didn't have these tests.
\N regex escape A new regex escape has been added, \N.
UNIVERSAL::DOES() The UNIVERSAL class has a new method, DOES().
Sends converted HTML to standard output The pod2html utility included with Perl 5.004 is entirely new
Sends converted HTML to standard output The pod2html utility included with Perl 5.004 is entirely new
A new field, ^*, can be used for variable-width, one-line-at-a-time text.
If you wish to update one of these modules, you don't need to wait for a new perl release.
UNIVERSAL::DOES() The UNIVERSAL class has a new method, DOES().
A new field, ^*, can be used for variable-width, one-line-at-a-time text.
If you wish to update one of these modules, you don't need to wait for a new perl release.
warnings warnings has a new warnings::fatal_enabled() function. ... It also includes a new illegalproto warning category.
Modules and Pragmata New modules encoding::warnings, by Audrey Tang, is a module to emit warnings
This will be changed in a future release, but we don't know yet what the new semantics will exactly be
These are not new failures--Perl 5.005_0x has the same bugs, but didn't have these tests.
A new optional location for Perl libraries, otherlibdirs, is available. ... In addition to config.over, a new override file, config.arch, is available.
A new optional location for Perl libraries, otherlibdirs, is available. ... In addition to config.over, a new override file, config.arch, is available.
Changed Internals A new file, mathoms.c, contains functions that aren't used anymore in the perl core
A proper interface for pluggable Method Resolution Orders As of Perl 5.10.1 there is a new interface
ithreads The new interpreter threads ("ithreads" for short) implementation of multithreading, by Arthur
A proper interface for pluggable Method Resolution Orders As of Perl 5.12.0 there is a new interface
A proper interface for pluggable Method Resolution Orders As of Perl 5.11.0 there is a new interface
However, the new safer model has its problems too. ... In completely unrelated news, you can now use safe signals with POSIX::SigAction.
Modules and Pragmata New Modules and Pragmata autodie autodie is a new lexically-scoped alternative
However, the new safer model has its problems too. ... In completely unrelated news, you can now use safe signals with POSIX::SigAction.
Compilation option: Binary compatibility with 5.003 There is a new Configure question that asks if you
The new APIs are experimental, and only cover a small proportion of what would be necessary to take full
Non-string passed as bitmask This is a new warning, produced when number has been passed as a argument
The _ prototype A new prototype character has been added. _ is equivalent to $ (it denotes a scalar)
less -R is now used instead of less for groff's new usage of ANSI escape codes by setting $Config{less
less -R is now used instead of less for groff's new usage of ANSI escape codes by setting $Config{less
Non-string passed as bitmask This is a new warning, produced when number has been passed as a argument
We suggest, but do not require, that you use the IO::* modules in new code.
The new algorithm "One-at-a-Time" produces a different hashed key order.
UNITCHECK blocks UNITCHECK, a new special code block has been introduced, in addition to BEGIN, CHECK
Note that the new semantics doesn't work with the Attribute::Handlers module (as of version 0.76).
UNITCHECK blocks UNITCHECK, a new special code block has been introduced, in addition to BEGIN, CHECK
The _ prototype A new prototype character has been added. _ is equivalent to $ but defaults to $_ if
Licensing Perl has a new Social Contract for contributors. See Porting/Contract.
A new utility, prove, makes it easy to run an individual regression test at the command line. prove is
Modules and Pragmata New Modules Module::Pluggable is a simple framework to create modules that accept
perlcc, a new experimental front end for the compiler is available.
(Steve Peters) d_pseudofork and d_printf_format_null A new configuration variable, available as $Config ... A new configuration variable, d_printf_format_null, has been added, to see if printf-like formats are
(Steve Peters) d_pseudofork and d_printf_format_null A new configuration variable, available as $Config ... A new configuration variable, d_printf_format_null, has been added, to see if printf-like formats are
Core Enhancements state() variables A new class of variables has been introduced.
Core Enhancements state() variables A new class of variables has been introduced.
See also "New or Changed Diagnostics" for this change.
See also "New or Changed Diagnostics" for this change.
Perldoc POSIX Unicode::Collate Unicode::Normalize Test::Harness threads::shared cond_wait has a new
From 5.11.0 forward only notable updates (such as new or deprecated modules ) will be listed in this
From 5.11.0 forward only notable updates (such as new or deprecated modules ) will be listed in this
state() variables A new class of variables has been introduced.
The new behaviour in the absence of a SCALAR method is to return TRUE if in the middle of an each iteration
The new APIs are experimental, and only cover a small proportion of what would be necessary to take full
Performance Enhancements A new internal cache means that isa() will often be faster.
The old size was 1008 bytes, the new default size is 4080 bytes.
Defined-or operator A new operator // (defined-or) has been implemented.
+ or -- are unable to change the value because it's beyond the limit of representation This uses a new ... as undef Add a new warning, "Prototype after '%s'" Tweak the "Illegal character in prototype" warning
For the new life of this switch, see "UTF-8 no longer default under UTF-8 locales", and "-C" in perlrun
The new names cause less pollution of the cpp namespace and reflect what the numbers have come to stand
The new names cause less pollution of the cpp namespace and reflect what the numbers have come to stand
For the new life of this switch, see "UTF-8 no longer default under UTF-8 locales", and "-C" in perlrun
Introduce a new special block, UNITCHECK, which is run at the end of a compilation unit (module, file ... Study the possibility of adding a new prototype character, _, meaning "this argument defaults to $_".
To cope with the new versioning system's use of at least three significant digits for each version component ... Thus, using the new notation, 5.005_03 is the "same" as v5.5.30, and the first maintenance version following
To cope with the new versioning system's use of at least three significant digits for each version component ... Thus, using the new notation, 5.005_03 is the "same" as v5.5.30, and the first maintenance version following
A new special regular expression variable has been introduced: $^N, which contains the most-recently ... This enables the new behaviour for perl embedders. This will default in 5.10. See perlembed.
Added a new exit method. ... added new is_shared method.
Defined-or operators A new operator // (defined-or) has been implemented.
As of v5.6.0, interpreter-threads support is still lacking a way to create new threads from Perl (i.e
As of v5.6.0, interpreter-threads support is still lacking a way to create new threads from Perl (i.e
New commands include < ?, > ?, and { ?
A new special variable, ${^RE_TRIE_MAXBUF}, has been added to fine-tune this optimization.
New commands include < ?, > ?, and { ?
As of v5.6.0, interpreter-threads support is still lacking a way to create new threads from Perl (i.e
As of v5.6.0, interpreter-threads support is still lacking a way to create new threads from Perl (i.e
A new configuration variable d_pseudofork has been to Configure, and is available as $Config{d_pseudofork
A new threads->exit() method is used to exit from the application (this is the default for the main thread
Changed Internals Some new APIs: ptr_table_clear(), ptr_table_free(), sv_setref_uv().
This new way is more efficient, and in many cases easier to read. ... In code, the new magical hashes %+ and %- can be used to access the contents of the capture buffers.
This new way is more efficient, and in many cases easier to read. ... In code, the new magical hashes %+ and %- can be used to access the contents of the capture buffers.
While this new feature was not planned, it fell naturally out of PerlIO changes, and is to be considered
threads::shared cond_wait has a new two argument form. cond_timedwait has been added.
While this new feature was not planned, it fell naturally out of PerlIO changes, and is to be considered
Hash::Util is the interface to the new restricted hashes feature. ... sort is a new pragma for controlling the behaviour of sort().
This new way is more efficient, and in many cases easier to read. ... In code, the new magical hashes %+ and %- can be used to access the contents of the capture buffers.
In conjunction with the new $^V magic variable (which contains the perl version as a string), such literals ... Perl: # this will parse in older versions of Perl also if ($^V and $^V gt v5.6.0) { # new
In conjunction with the new $^V magic variable (which contains the perl version as a string), such literals ... Perl: # this will parse in older versions of Perl also if ($^V and $^V gt v5.6.0) { # new
perlthanks Perl 5.10.1 adds a new utility perlthanks, which is a variant of perlbug, but for sending
As is, this meant that := cannot be used as a new token, without silently changing the meaning of existing
For new projects the core perl team would strongly recommend that you use dedicated, single purpose security
For new projects the core perl team would strongly recommend that you use dedicated, single purpose security
CHECK is a new keyword All subroutine definitions named CHECK are now special. ... The new behavior is to not coerce bareword arguments to a typeglob.
CHECK is a new keyword All subroutine definitions named CHECK are now special. ... The new behavior is to not coerce bareword arguments to a typeglob.
CHECK is a new keyword All subroutine definitions named CHECK are now special. ... The new behavior is to not coerce bareword arguments to a typeglob.
CHECK is a new keyword All subroutine definitions named CHECK are now special. ... The new behavior is to not coerce bareword arguments to a typeglob.
A new function countit() is just like timeit() except that it takes a TIME instead of a COUNT. ... IO::Socket::INET->new now sets $!
A new function countit() is just like timeit() except that it takes a TIME instead of a COUNT. ... IO::Socket::INET->new now sets $!
A new function countit() is just like timeit() except that it takes a TIME instead of a COUNT. ... IO::Socket::INET->new now sets $!
A new function countit() is just like timeit() except that it takes a TIME instead of a COUNT. ... IO::Socket::INET->new now sets $!
A new feature called assertions will be available. ... A new operator // (defined-or) will be available.
Fcntl New constants in the existing Fcntl modules are now supported, provided that your operating system
Known Problems There are no known new bugs.
Enhancements The default since perl 5.000 has been for perl to create an empty scalar with every new ... We would recommend testing with this configuration on new deployments of perl, particularly for multi-threaded
If you are on IRIX or Tru64 platforms, new profiling/debugging options have been added, see perlhack
The fields pragma now provides ways to create pseudo-hashes, via fields::new() and fields::phash().
Miscellaneous bugfixing and porting of new core code to VMS.
Miscellaneous bugfixing and porting of new core code to VMS.
The fields pragma now provides ways to create pseudo-hashes, via fields::new() and fields::phash().
Modules and Pragmata New Modules B Perl compiler and tools. See B.
gcc versions 3.x introduced a new warning that caused a lot of noise during Perl compilation: gcc -Ialreadyknowndirectory
\N experimental regex escape Perl now supports \N, a new regex escape which you can think of as the
Fcntl, Socket, and Sys::Syslog have been rewritten to use the new-style constant dispatch section (see
gcc versions 3.x introduced a new warning that caused a lot of noise during Perl compilation: gcc -Ialreadyknowndirectory
The following things are new: config() The config() method now also supports the calling-style config
Selected Performance Enhancements A new internal cache means that isa() will often be faster.
alphabetic escapes encountered when parsing quote constructs now generate a warning, since they may take on new
alphabetic escapes encountered when parsing quote constructs now generate a warning, since they may take on new
This is predicated on the assumption that new features will not, in general, be added to maintenance
perlthanks Perl 5.11.0 added a new utility perlthanks, which is a variant of perlbug, but for sending
Modules and Pragmata New Modules and Distributions Attribute::Handlers - Simpler definition of attribute
The new Win32::GetANSIPathName() function can be used to turn a long pathname into a short one only if
Data::Dumper A new option, Pair, allows choosing the separator between hash keys and values. ... Scalar::Util New utilities: refaddr, isvstring, looks_like_number, set_prototype.
Data::Dumper A new option, Pair, allows choosing the separator between hash keys and values. ... Scalar::Util New utilities: refaddr, isvstring, looks_like_number, set_prototype.
Data::Dumper A new option, Pair, allows choosing the separator between hash keys and values. ... Scalar::Util New utilities: refaddr, isvstring, looks_like_number, set_prototype.
Data::Dumper A new option, Pair, allows choosing the separator between hash keys and values. ... Scalar::Util New utilities: refaddr, isvstring, looks_like_number, set_prototype.
Platform-specific improvements The following new ports are now available. ... Trailing new %ENV entries weren't propagated to child processes. This is now fixed.
The new restrictions when tainting include: No glob() or <*> These operators may spawn the C shell
There are two new cases where when now interprets its argument as a boolean, instead of an expression
There are two new cases where when now interprets its argument as a boolean, instead of an expression
Core Enhancements Add package NAME VERSION syntax This new syntax allows a module author to set the
Core Enhancements Add package NAME VERSION syntax This new syntax allows a module author to set the
This makes the new Socket implementation of inet_pton consistent with the existing Socket6 implementation
See "New Unicode Properties" earlier in this document for additional information on changes with Unicode
See "New Unicode Properties" earlier in this document for additional information on changes with Unicode
perlbug no longer reports "Message sent" when it hasn't actually sent the message perlthanks is a new
There are two new cases where when now interprets its argument as a boolean, instead of an expression
Creating a new thread when weak references exist was buggy, and would often cause warnings at interpreter
perldoc now uses less -R instead of less for improved behaviour in the face of groff's new usage of ANSI
There are two new cases where when now interprets its argument as a boolean, instead of an expression
reference, relying on the flags being copied when the reference was copied, or set at the creation of a new
Changes to Existing Documentation We added the new maintenance release policy to perlpolicy.pod We've
This is predicated on the assumption that new features will not, in general, be added to maintenance
The new Perl command line option -C and its counterpart environment variable PERL_UNICODE can now be
Some new Configure symbols, useful for extension writers: d_cmsghdr For struct cmsghdr.
perldebguts.pod This new manpage contains excessively low-level material not related to the Perl debugger
These are not new failures--Perl 5.005_0x has the same bugs, but didn't have these tests.
perldebguts.pod This new manpage contains excessively low-level material not related to the Perl debugger
assigned to *Foo::ISA now have the necessary magic added to them to catch any further updates to the new
The new Perl command line option -C and its counterpart environment variable PERL_UNICODE can now be
The new Perl command line option -C and its counterpart environment variable PERL_UNICODE can now be
A new pod, perluniprops, lists all available non-Unihan character properties. ... There is a new Perl extension, the 'Present_In', or simply 'In', property.
New documentation, perluniprops, lists all available non-Unihan character properties. ... There is a new Perl extension, the 'Present_In', or simply 'In', property.
Changed Diagnostics A number of existing diagnostic messages have been improved or corrected: A new ... Prototype after '%c' for %s : %s have been moved from the syntax top-level warnings category into a new
Steve Peters provided new *_set macros and reworked the core to use these rather than assigning to macros
test failures but the situation is actually much better than it was in 5.6.0; it's just that so many new
mode POST_MAX doesn't cause the client to hang any more Automatic tab indexes are now disabled and new ... 3 new characters added to the ISO-8859-7 encoding New encoding MIME-Header-ISO_2022_JP added Problem
This may cause new warnings when modules are being installed. ... You can now install coderef handlers, 'DEFAULT', and 'IGNORE' handlers, installing new handlers was not
Pragmata Six new pragmatic modules exist: use autouse MODULE => qw(sub1 sub2 sub3) Defers require
Suggestions for new shiny examples welcome but the main issue is that the examples need to be documented
Also, there is a new pack() character format, W, which is intended to replace the old C.
Also, there is a new pack() character format, W, which is intended to replace the old C.
many test failures but the situation is actually better than it was in 5.6.0, it's just that so many new
Suggestions for new shiny examples welcome but the main issue is that the examples need to be documented ... Multithreaded code should be migrated to the new ithreads model (see threads, threads::shared and perlthrtut
These are not new failures--Perl 5.005_0x has the same bugs, but didn't have these tests. ..
The information is attached to the new offsets member of the struct regexp.
Also, there is a new pack() character format, W, which is intended to replace the old C.
Also, there is a new pack() character format, W, which is intended to replace the old C.
Carp Carp has a new function cluck(). cluck() warns, like carp(), but also adds a stack backtrace to
Fix bug RT #45053, Perl_newCONSTSUB() is now thread safe.
There is a new kill implementation based on sys$sigprc that allows older VMS systems (pre-7.0) to use ... 9x. [561] Current directory entries in %ENV are now correctly propagated to child processes. [561] New
Three new compilation flags are recognized by malloc.c.
You can now install coderef handlers, 'DEFAULT', and 'IGNORE' handlers, installing new handlers was not
option can be specified via MakeMaker: perl Makefile.PL POLLUTE=1 PERL_IMPLICIT_CONTEXT This new
option can be specified via MakeMaker: perl Makefile.PL POLLUTE=1 PERL_IMPLICIT_CONTEXT This new
Module information summary Brand new modules, arranged by topic rather than strictly alphabetically:
Selected Bug Fixes Ensure that pp_qr returns a new regexp SV each time. Resolves RT #69852.
As is, this meant that := cannot be used as a new token, without silently changing the meaning of existing ... You may find Perl's new given/when feature a suitable replacement.
Changed Internals These news matter to you only if you either write XS code or like to know about or
Changed Internals These news matter to you only if you either write XS code or like to know about or
New %ENV entries now propagate to subprocesses.
Modules and Pragmata New Modules B::Concise, by Stephen McCamant, is a new compiler backend for walking
Added a new POSIX-ish character class [[:blank:]] which stands for horizontal whitespace (currently,
add the if pragma 14832 implement IV/UV/NV/long double un/packing with j/J/F/D 14854 document the new
(This feature, like other new features that combine Unicode and I/O, work only if you are using PerlIO
A new threads->exit() method is used to exit from the application (this is the default for the main thread
The debugger has a new dumpDepth option to control the maximum depth to which nested structures are dumped ... Added a new POSIX-ish character class [[:blank:]] which stands for horizontal whitespace (currently,
pp_qr now always returns a new regexp SV. Resolves RT #69852. ... Various bugs in the new-to 5.10.0 mro code, triggered by manipulating @ISA, have been found and fixed
See also the new pragma autodie. File::Basename Upgraded from version 2.76 to 2.77. ... casefold() has new fields returned to provide both a simpler interface and previously missing information
Various bugs in the new-to 5.10.0 mro code, triggered by manipulating @ISA, have been found and fixed
Various bugs in the new-to 5.10.0 mro code, triggered by manipulating @ISA, have been found and fixed