How often are new versions of Perl released? ... Recently, the plan has been to release a new version of Perl roughly every April, but getting the release
uc $new | (uc $1 ^ $1) . ... # finish up with any remaining new (for when new is longer than old) if ($newlen > $oldlen) {
) or system("mv", $old, $new); It may be more portable to use the File::Copy module instead. ... You just copy to the new file to the new name (checking return values), then delete the old one.
If you want to preserve the original hashes, copy one hash (%hash1) to a new hash (%new_hash), then add ... don't want to create a new hash, you can still use this looping technique; just change the %new_hash
He suggests (assuming your string is contained in $text): my @new = (); push(@new, $+) while ... | , }gx; push(@new, undef) if substr($text,-1,1) eq ','; If you want to represent quotation
local($x) saves away the old value of the global variable $x and assigns a new value for the duration ... my($x) creates a new variable that is only visible in the current subroutine.
use File::Copy; copy( $original, $new_copy ) or die "Copy failed: $!" ... You also have to remember to copy the permissions, owner, and group to the new file.
Use the Email::Folder module, like so: use Email::Folder; my $folder = Email::Folder->new('/path ... Simple objects, but we want # Email::MIME objects as they're more robust my $mime = Email::MIME->new
You have to put these directives at the beginning of the line and somewhere where Perl expects a new ... You end the comment with =cut, ending the Pod section: =pod my $object = NotGonnaHappen->new
Think of it this way: double-quote expansion is used to produce new strings. ... If you get used to writing odd things like these: print "$var"; # BAD my $new = "$old"
use Email::MIME; my $message = Email::MIME->new($rfc2822); my $subject = $message->header('Subject ... Abstract and then using its cast method to get an Email::MIME object: my $abstract = Email::Abstract->new
("H*", pack("N", 3735928559)); Using Bit::Vector: use Bit::Vector; my $vec = Bit::Vector->new_Dec ... Using Bit::Vector: my $vec = Bit::Vector->new_Bin(32, "11011110101011011011111011101111"); my
; open my $out, '>', "$file.new" or die "Can't write new file: $!" ... open my $out, '>', "$file.new" or die "Can't write new file: $!"
work using splice, randomly picking another element to swap the current element with srand; @new ... = (); @old = 1 .. 10; # just a demo while (@old) { push(@new, splice(@old, rand @old
handshaking, then the standard dual-process approach will suffice: use IO::Socket; # new ... in 5.004 my $handle = IO::Socket::INET->new('www.perl.com:80') or die "can't connect to
using the www_form_urlencode method from HTTP::Tiny: use HTTP::Tiny; my $ua = HTTP::Tiny->new ... use HTTP::Tiny; my $ua = HTTP::Tiny->new; my $url = 'https://metacpan.org/search'; my $
(contributed by Alex Beamish) If the new version of the C library is ABI-compatible (that's Application
foobarbar foobarbarbar Finally foo The $f that has "bar" added to it three times should be a new ... $f my $f should create a new lexical variable each time through the loop.
Perl News covers some of the major events in the Perl world, Perl Weekly is a weekly e-mail (and RSS
This will mean a new variable might accidentally be associated with the value for an old. ... handle renaming the keys if you use multiple threads (which causes all variables to be reallocated at new
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chroot This function works like the system call by the same name: it makes the named directory the new ... directory) immediately after a chroot, otherwise the current working directory may be outside of the new
The values for WHENCE are 0 to set the new position to POSITION; 1 to set it to the current position ... " function: use Fcntl 'SEEK_CUR'; sub systell { sysseek($_[0], 0, SEEK_CUR) } Returns the new
link OLDFILE,NEWFILE Creates a new filename linked to the old filename.
the page is advanced by writing a form feed and a special top-of-page format is used to format the new ... The number of lines remaining on the current page is in variable $-, which can be set to 0 to force a new
symlink OLDFILE,NEWFILE Creates a new filename symbolically linked to the old filename.
separate strings of LIST into a single string with fields separated by the value of EXPR, and returns that new
If FILEHANDLE is supplied, sets the new current default filehandle for output. ... ; # This goes to $new_handle: print "ok 1\n"; ...
an undefined scalar variable (or array or hash element), the variable is assigned a reference to a new
Prepends list to the front of the array and returns the new number of elements in the array.
$1 : undef ); push @caps, fc($_); } my @new = @old[ sort { ... = sort function_with_signature @old; # guarantee stability use sort 'stable'; my @new =
Redeclaring a variable in the same scope or statement will "shadow" the previous declaration, creating a new
Redeclaring a variable in the same scope or statement will "shadow" the previous declaration, creating a new
Also, this has to unwind one hash and build a whole new one, which may take some time on a large hash
\n" unless chdir '/usr/spool/news'; chdir '/usr/spool/news' or die "Can't cd to spool: $! ... Here's an example: use Scalar::Util "blessed"; eval { ... ; die Some::Module::Exception->new
This ensures crypt will hash the new string with the same salt as the digest. ... When choosing a new salt create a random two character string whose characters come from the set [./0
When the new binary is executed it will begin by executing a goto LABEL (with all the restrictions that
fork Does a fork(2) system call to create a new process running the same program at the same point
In the child process, the filehandle isn't opened--I/O happens from/to the new STDOUT/STDIN. ... New code should favor the three-argument form of open over this older form.
Example: # print out history file offsets dbmopen(%HIST,'/usr/lib/news/history',0666); while
The values for WHENCE are 0 to set the new position in bytes to POSITION; 1 to set it to the current
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NAME feature - Perl pragma to enable new features SYNOPSIS use feature qw(fc say); # Without the ... New syntactic constructs, or new semantic meanings to older constructs, can be enabled by use feature
NAME perlnewmod - preparing a new module for distribution DESCRIPTION This document gives you some ... Check it's new There are a lot of modules on CPAN, and it's easy to miss one that's similar to what
Try to design the new module to be easy to extend and reuse. ... ->new(); ?
NAME perldelta - what is new for perl v5.37.8 DESCRIPTION This document describes differences between
it, adding many new features and capabilities. ... WHAT IS NEW? Easier to test new testing tools.
SYNOPSIS use Dumpvalue; my $dumper = Dumpvalue->new; $dumper->set(globPrint => 1); $dumper->dumpValue ... ); $dumper->dumpvars('main'); my $dump = $dumper->stringify($some_value); DESCRIPTION Creation A new
NAME perlreapi - Perl regular expression plugin interface DESCRIPTION As of Perl 5.9.5 there is a new ... instead of compiling a new one.
Encode::Alias - alias definitions to encodings SYNOPSIS use Encode; use Encode::Alias; define_alias( "newName ... to make the new definition available
Returns the new file position, or -1 if an error occurs.
) newLISTOP newLOGOP newLOOPEX newLOOPOP newNULLLIST newOP newPMOP newPROG (undocumented) newPVOP newRANGE ... newRV newRV_inc newRV_noinc newSLICEOP newSTATEOP newSUB newSV newSViv newSVnv newSVOP newSVpv newSVpvn
- save and restore selected file handle SYNOPSIS use SelectSaver; { my $saver = SelectSaver->new ... ; # new handle may be selected, or not } # previous handle is selected DESCRIPTION A SelectSaver
:Stack->new() This will create a new empty stack instance. ... $hub = $stack->new_hub() $hub = $stack->new_hub(%params) $hub = $stack->new_hub(%params, class
, 'NewScalar'; tie $new_std_scalar, 'NewStdScalar'; DESCRIPTION This module provides some skeletal ... Associates a new scalar instance with the specified class.
NAME Tie::Handle - base class definitions for tied handles SYNOPSIS package NewHandle; require Tie ... Associates a new glob instance with the specified class.
, 'NewHash'; tie %new_std_hash, 'NewStdHash'; tie %new_extra_hash, 'NewExtraHash', sub {warn ... Associates a new hash instance with the specified class.
5.8, thread programming has been available using a model called interpreter threads which provides a new ... $old_size = threads->set_stack_size($new_size); Sets a new default per-thread stack size, and returns
If Perl is configured to use the new 'perlio' IO system then Encode provides a "layer" (see PerlIO) which ... iliad.utf8'); my @epic = <$iliad>; print $utf8 @epic; close($utf8); close($illiad); In addition, the new
If you're writing new code consider using TAP::Harness directly instead. ... See "new" in TAP::Formatter::Base.
VERSION Version 3.44 SYNOPSIS use TAP::Parser::Scheduler; DESCRIPTION METHODS Class Methods new ... my $sched = TAP::Parser::Scheduler->new(tests => \@tests); my $sched = TAP::Parser::Scheduler->new(
This means that programmers need new habits. ... Your new toolkit Add to your standard heading the following line: use Encode qw(encode decode); Or
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New Diagnostics New Errors Bareword filehandle "%s" not allowed under 'no feature "bareword_filehandles ... "' This accompanies the new bareword_filehandles feature.
New Diagnostics New Errors Bareword filehandle "%s" not allowed under 'no feature "bareword_filehandles ... "' This accompanies the new bareword_filehandles feature.
New Diagnostics New Errors A new syntax error has been added for the error that a catch block does
New Diagnostics New Errors A new syntax error has been added for the error that a catch block does
New Diagnostics New Errors None
New Diagnostics New Errors None
New Diagnostics New Errors Object with arguments in @INC does not support a hook method
New Diagnostics New Errors Object with arguments in @INC does not support a hook method
New Diagnostics New Errors Closure prototype called This error occurs when a subroutine reference ... entry containing an object with a destructor that creates a new entry containing an object etc.
New Diagnostics New Errors Closure prototype called This error occurs when a subroutine reference ... entry containing an object with a destructor that creates a new entry containing an object etc.
Internal Changes New APIs CLONE_PARAMS structure added to ease correct thread creation Modules that ... create threads should now create CLONE_PARAMS structures by calling the new function Perl_clone_params_new
perlmroapi This describes the new interface for pluggable Method Resolution Orders. ... perlthanks This describes the new perlthanks utility.
New Diagnostics New Errors Too many nested BEGIN blocks, maximum of %d allowed Execution of %s aborted
New Diagnostics New Errors Too many nested BEGIN blocks, maximum of %d allowed Execution of %s aborted
Documentation New Documentation "Writing safer macros" in perlhacktips A new section has been added
New Warnings Unknown locale category %d This is a shortened form of an already existing diagnostic ... , for use when there is no new locale being switched to.
New or Changed Diagnostics New Diagnostics SV allocation tracing has been added to the diagnostics ... See perldiag for details of these new messages.
New Warnings Code point 0x%X is not Unicode, and not portable This is actually not a new message, ... This new warning parallels the similar already-existing one raised for \o{}.
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);).
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