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authorBrian Fraser <fraserbn@gmail.com>2012-06-27 08:54:06 -0700
committerFather Chrysostomos <sprout@cpan.org>2012-06-27 08:54:06 -0700
commit60cf4914ce8be9dda8380ff641184f6bb31a9e33 (patch)
tree137ae3ea497a8633ea3953cb067bf741d08bd35d /pod/perlvar.pod
parent7c2e2b3aad03ef0fd13998f12cbe69265287c7b4 (diff)
downloadperl-60cf4914ce8be9dda8380ff641184f6bb31a9e33.tar.gz
perlvar: #109408
Diffstat (limited to 'pod/perlvar.pod')
-rw-r--r--pod/perlvar.pod76
1 files changed, 38 insertions, 38 deletions
diff --git a/pod/perlvar.pod b/pod/perlvar.pod
index cfa82f9beb..da02cc6a3b 100644
--- a/pod/perlvar.pod
+++ b/pod/perlvar.pod
@@ -24,7 +24,7 @@ C<W>) is the scalar variable whose name is the single character
control-C<W>. This is better than typing a literal control-C<W>
into your program.
-Since Perl 5.6, Perl variable names may be alphanumeric
+Since Perl v5.6.0, Perl variable names may be alphanumeric
strings that begin with control characters (or better yet, a caret).
These variables must be written in the form C<${^Foo}>; the braces
are not optional. C<${^Foo}> denotes the scalar variable whose
@@ -145,7 +145,7 @@ test. Outside a C<while> test, this will not happen.
=back
As C<$_> is a global variable, this may lead in some cases to unwanted
-side-effects. As of perl 5.10, you can now use a lexical version of
+side-effects. As of perl v5.10.0, you can now use a lexical version of
C<$_> by declaring it in a file or in a block with C<my>. Moreover,
declaring C<our $_> restores the global C<$_> in the current scope.
@@ -250,7 +250,7 @@ have their own copies of it.
If the program has been given to perl via the switches C<-e> or C<-E>,
C<$0> will contain the string C<"-e">.
-On Linux as of perl 5.14 the legacy process name will be set with
+On Linux as of perl v5.14.0 the legacy process name will be set with
C<prctl(2)>, in addition to altering the POSIX name via C<argv[0]> as
perl has done since version 4.000. Now system utilities that read the
legacy process name such as ps, top and killall will recognize the
@@ -549,7 +549,7 @@ lest you inadvertently call it.
If your system has the C<sigaction()> function then signal handlers
are installed using it. This means you get reliable signal handling.
-The default delivery policy of signals changed in Perl 5.8.0 from
+The default delivery policy of signals changed in Perl v5.8.0 from
immediate (also known as "unsafe") to deferred, also known as "safe
signals". See L<perlipc> for more information.
@@ -629,8 +629,8 @@ X<$^V> X<$PERL_VERSION>
The revision, version, and subversion of the Perl interpreter,
represented as a C<version> object.
-This variable first appeared in perl 5.6.0; earlier versions of perl
-will see an undefined value. Before perl 5.10.0 C<$^V> was represented
+This variable first appeared in perl v5.6.0; earlier versions of perl
+will see an undefined value. Before perl v5.10.0 C<$^V> was represented
as a v-string.
C<$^V> can be used to determine whether the Perl interpreter executing
@@ -648,7 +648,7 @@ for a convenient way to fail if the running Perl interpreter is too old.
See also C<$]> for an older representation of the Perl version.
-This variable was added in Perl 5.6.
+This variable was added in Perl v5.6.0.
Mnemonic: use ^V for Version Control.
@@ -667,7 +667,7 @@ default. See the documentation for B<-f> in
L<perlrun|perlrun/"Command Switches"> for more information about site
customization.
-This variable was added in Perl 5.10.
+This variable was added in Perl v5.10.0.
=item $EXECUTABLE_NAME
@@ -785,7 +785,7 @@ The C<Devel::NYTProf> and C<Devel::FindAmpersand>
modules can help you find uses of these
problematic match variables in your code.
-Since Perl 5.10, you can use the C</p> match operator flag and the
+Since Perl v5.10.0, you can use the C</p> match operator flag and the
C<${^PREMATCH}>, C<${^MATCH}>, and C<${^POSTMATCH}> variables instead
so you only suffer the performance penalties.
@@ -814,7 +814,7 @@ BLOCK).
The use of this variable anywhere in a program imposes a considerable
performance penalty on all regular expression matches. To avoid this
penalty, you can extract the same substring by using L</@->. Starting
-with Perl 5.10, you can use the C</p> match flag and the C<${^MATCH}>
+with Perl v5.10.0, you can use the C</p> match flag and the C<${^MATCH}>
variable to do the same thing for particular match operations.
This variable is read-only and dynamically-scoped.
@@ -829,7 +829,7 @@ performance penalty associated with that variable, and is only guaranteed
to return a defined value when the pattern was compiled or executed with
the C</p> modifier.
-This variable was added in Perl 5.10.
+This variable was added in Perl v5.10.0.
This variable is read-only and dynamically-scoped.
@@ -845,7 +845,7 @@ enclosed by the current BLOCK.
The use of this variable anywhere in a program imposes a considerable
performance penalty on all regular expression matches. To avoid this
penalty, you can extract the same substring by using L</@->. Starting
-with Perl 5.10, you can use the C</p> match flag and the
+with Perl v5.10.0, you can use the C</p> match flag and the
C<${^PREMATCH}> variable to do the same thing for particular match
operations.
@@ -861,7 +861,7 @@ performance penalty associated with that variable, and is only guaranteed
to return a defined value when the pattern was compiled or executed with
the C</p> modifier.
-This variable was added in Perl 5.10
+This variable was added in Perl v5.10.0
This variable is read-only and dynamically-scoped.
@@ -881,7 +881,7 @@ enclosed by the current BLOCK). Example:
The use of this variable anywhere in a program imposes a considerable
performance penalty on all regular expression matches.
To avoid this penalty, you can extract the same substring by
-using L</@->. Starting with Perl 5.10, you can use the C</p> match flag
+using L</@->. Starting with Perl v5.10.0, you can use the C</p> match flag
and the C<${^POSTMATCH}> variable to do the same thing for particular
match operations.
@@ -897,7 +897,7 @@ performance penalty associated with that variable, and is only guaranteed
to return a defined value when the pattern was compiled or executed with
the C</p> modifier.
-This variable was added in Perl 5.10.
+This variable was added in Perl v5.10.0.
This variable is read-only and dynamically-scoped.
@@ -934,7 +934,7 @@ recently matched. For example, to effectively capture text to a variable
By setting and then using C<$var> in this way relieves you from having to
worry about exactly which numbered set of parentheses they are.
-This variable was added in Perl 5.8.
+This variable was added in Perl v5.8.0.
Mnemonic: the (possibly) Nested parenthesis that most recently closed.
@@ -954,7 +954,7 @@ past where C<$2> ends, and so on. You can use C<$#+> to determine
how many subgroups were in the last successful match. See the
examples given for the C<@-> variable.
-This variable was added in Perl 5.6.
+This variable was added in Perl v5.6.0.
=item %LAST_PAREN_MATCH
@@ -981,7 +981,7 @@ iterative access to them via C<each> may have unpredictable results.
Likewise, if the last successful match changes, then the results may be
surprising.
-This variable was added in Perl 5.10.
+This variable was added in Perl v5.10.0.
This variable is read-only and dynamically-scoped.
@@ -1027,7 +1027,7 @@ After a match against some variable C<$var>:
=back
-This variable was added in Perl 5.6.
+This variable was added in Perl v5.6.0.
=item %LAST_MATCH_START
@@ -1075,7 +1075,7 @@ iterative access to them via C<each> may have unpredictable results.
Likewise, if the last successful match changes, then the results may be
surprising.
-This variable was added in Perl 5.10
+This variable was added in Perl v5.10.0.
This variable is read-only and dynamically-scoped.
@@ -1095,7 +1095,7 @@ X<${^RE_DEBUG_FLAGS}>
The current value of the regex debugging flags. Set to 0 for no debug output
even when the C<re 'debug'> module is loaded. See L<re> for details.
-This variable was added in Perl 5.10.
+This variable was added in Perl v5.10.0.
=item ${^RE_TRIE_MAXBUF}
X<${^RE_TRIE_MAXBUF}>
@@ -1109,7 +1109,7 @@ be as conservative of memory as possible but still occur, and set it to a
negative value to prevent the optimisation and conserve the most memory.
Under normal situations this variable should be of no interest to you.
-This variable was added in Perl 5.10.
+This variable was added in Perl v5.10.0.
=back
@@ -1566,7 +1566,7 @@ WSTOPSIG and WIFCONTINUED functions provided by the L<POSIX> module.
Under VMS this reflects the actual VMS exit status; i.e. it is the
same as C<$?> when the pragma C<use vmsish 'status'> is in effect.
-This variable was added in Perl 5.8.9.
+This variable was added in Perl v5.10.0.
=item $EXTENDED_OS_ERROR
@@ -1637,7 +1637,7 @@ It has the same scoping as the C<$^H> and C<%^H> variables. The exact
values are considered internal to the L<warnings> pragma and may change
between versions of Perl.
-This variable was added in Perl 5.6.
+This variable was added in Perl v5.6.0.
=item $OS_ERROR
@@ -1764,7 +1764,7 @@ when being compiled, such as for example to C<AUTOLOAD> at compile
time rather than normal, deferred loading. Setting
C<$^C = 1> is similar to calling C<B::minus_c>.
-This variable was added in Perl 5.6.
+This variable was added in Perl v5.6.0.
=item $DEBUGGING
@@ -1956,7 +1956,7 @@ A module should use only keys that begin with the module's name (the
name of its main package) and a "/" character. For example, a module
C<Foo::Bar> should use keys such as C<Foo::Bar/baz>.
-This variable was added in Perl 5.6.
+This variable was added in Perl v5.6.0.
=item ${^OPEN}
X<${^OPEN}>
@@ -1965,7 +1965,7 @@ An internal variable used by PerlIO. A string in two parts, separated
by a C<\0> byte, the first part describes the input layers, the second
part describes the output layers.
-This variable was added in Perl 5.8.0.
+This variable was added in Perl v5.8.0.
=item $PERLDB
@@ -2039,7 +2039,7 @@ B<-t> or B<-TU>).
This variable is read-only.
-This variable was added in Perl 5.8.
+This variable was added in Perl v5.8.0.
=item ${^UNICODE}
X<${^UNICODE}>
@@ -2050,7 +2050,7 @@ the possible values.
This variable is set during Perl startup and is thereafter read-only.
-This variable was added in Perl 5.8.2.
+This variable was added in Perl v5.8.2.
=item ${^UTF8CACHE}
X<${^UTF8CACHE}>
@@ -2059,7 +2059,7 @@ This variable controls the state of the internal UTF-8 offset caching code.
1 for on (the default), 0 for off, -1 to debug the caching code by checking
all its results against linear scans, and panicking on any discrepancy.
-This variable was added in Perl 5.8.9.
+This variable was added in Perl v5.8.9.
=item ${^UTF8LOCALE}
X<${^UTF8LOCALE}>
@@ -2069,7 +2069,7 @@ startup. This information is used by perl when it's in
adjust-utf8ness-to-locale mode (as when run with the C<-CL> command-line
switch); see L<perlrun> for more info on this.
-This variable was added in Perl 5.8.8.
+This variable was added in Perl v5.8.8.
=back
@@ -2093,7 +2093,7 @@ See L<perldiag> for details about error messages.
X<$#> X<$OFMT>
C<$#> was a variable that could be used to format printed numbers.
-After a deprecation cycle, its magic was removed in Perl 5.10 and
+After a deprecation cycle, its magic was removed in Perl v5.10.0 and
using it now triggers a warning: C<$# is no longer supported>.
This is not the sigil you use in front of an array name to get the
@@ -2102,19 +2102,19 @@ of an array in Perl. The two have nothing to do with each other.
Deprecated in Perl 5.
-Removed in Perl 5.10.
+Removed in Perl v5.10.0.
=item $*
X<$*>
C<$*> was a variable that you could use to enable multiline matching.
-After a deprecation cycle, its magic was removed in Perl 5.10.
+After a deprecation cycle, its magic was removed in Perl v5.10.0.
Using it now triggers a warning: C<$* is no longer supported>.
You should use the C</s> and C</m> regexp modifiers instead.
Deprecated in Perl 5.
-Removed in Perl 5.10.
+Removed in Perl v5.10.0.
=item $ARRAY_BASE
@@ -2131,12 +2131,12 @@ directive, and cannot influence the behavior of any other file.
(That's why you can only assign compile-time constants to it.)
Its use is highly discouraged.
-Prior to Perl 5.10, assignment to C<$[> could be seen from outer lexical
+Prior to Perl v5.10.0, assignment to C<$[> could be seen from outer lexical
scopes in the same file, unlike other compile-time directives (such as
L<strict>). Using local() on it would bind its value strictly to a lexical
block. Now it is always lexically scoped.
-As of Perl 5.16, it is implemented by the L<arybase> module. See
+As of Perl v5.16.0, it is implemented by the L<arybase> module. See
L<arybase> for more details on its behaviour.
Under C<use v5.16>, or C<no feature "array_base">, C<$[> no longer has any
@@ -2145,7 +2145,7 @@ other value will produce an error.
Mnemonic: [ begins subscripts.
-Deprecated in Perl 5.12.
+Deprecated in Perl v5.12.0.
=item $OLD_PERL_VERSION