NAME DESCRIPTION OVERVIEWA quick note on terms What is a regular expression engine? Structure of a Regexp Program Process OverviewCompilation Execution MISCELLANEOUSUnicode and Localisation Support Base Structures SEE ALSO AUTHOR LICENCE REFERENCES NAME perlreguts - Description of the Perl regular expression engine. DESCRIPTION This document is an attempt to shine some light on the guts of the regex engine and how it works. The regex engine represents a significant chunk of the perl cod

continue BLOCK continue When followed by a BLOCK, continue is actually a flow control statement rather than a function. If there is a continue BLOCK attached to a BLOCK (typically in a while or foreach ), it is always executed just before the conditional is about to be evaluated again, just like the third part of a for loop in C. Thus it can be used to increment a loop variable, even when the loop has been continued via the next statement (which is similar to the C continue statement). last, ne

NAME SYNOPSIS DESCRIPTION FUNCTIONS$bool = mark_as_loaded( PACKAGE ); $bool = mark_as_unloaded( PACKAGE ); $loc = is_loaded( PACKAGE ); BUG REPORTS AUTHOR COPYRIGHT NAME Module::Loaded - mark modules as loaded or unloaded SYNOPSIS use Module::Loaded; $bool = mark_as_loaded('Foo'); # Foo.pm is now marked as loaded $loc = is_loaded('Foo'); # location of Foo.pm set to the # loaders location eval "require 'Foo'"; # is now a no-op $bool = m

dbmopen HASH,DBNAME,MASK [This function has been largely superseded by the tie function.] This binds a dbm(3), ndbm(3), sdbm(3), gdbm(3), or Berkeley DB file to a hash. HASH is the name of the hash. (Unlike normal open, the first argument is not a filehandle, even though it looks like one). DBNAME is the name of the database (without the .dir or .pag extension if any). If the database does not exist, it is created with protection specified by MASK (as modified by the umask). To prevent creation

NAME DESCRIPTION USAGE SEE ALSO AUTHORS NAME libnetcfg - configure libnet DESCRIPTION The libnetcfg utility can be used to configure the libnet. Starting from perl 5.8 libnet is part of the standard Perl distribution, but the libnetcfg can be used for any libnet installation. USAGE Without arguments libnetcfg displays the current configuration. $ libnetcfg # old config ./libnet.cfg daytime_hosts ntp1.none.such ftp_int_passive 0 ftp_testhost ftp.funet.fi inet_domain

NAME DESCRIPTIONPREAMBLE ROADMAP Compiling your C program Adding a Perl interpreter to your C program Calling a Perl subroutine from your C program Evaluating a Perl statement from your C program Performing Perl pattern matches and substitutions from your C program Fiddling with the Perl stack from your C program Maintaining a persistent interpreter Execution of END blocks $0 assignments Maintaining multiple interpreter instances Using Perl modules, which themselves use C libraries, from your

NAME SYNOPSIS ABSTRACT In Practice SEE ALSO NAME Encode::Unicode::UTF7 -- UTF-7 encoding SYNOPSIS use Encode qw/encode decode/; $utf7 = encode("UTF-7", $utf8); $utf8 = decode("UTF-7", $ucs2); ABSTRACT This module implements UTF-7 encoding documented in RFC 2152. UTF-7, as its name suggests, is a 7-bit re-encoded version of UTF-16BE. It is designed to be MTA-safe and expected to be a standard way to exchange Unicoded mails via mails. But with the advent of UTF-8 and 8-bit compliant MTAs, UTF

NAME SYNOPSIS DESCRIPTION SEE ALSO COPYRIGHT AND DISCLAIMERS AUTHOR NAME Pod::Perldoc::ToChecker - let Perldoc check Pod for errors SYNOPSIS % perldoc -o checker SomeFile.pod No Pod errors in SomeFile.pod (or an error report) DESCRIPTION This is a "plug-in" class that allows Perldoc to use Pod::Simple::Checker as a "formatter" class (or if that is not available, then Pod::Checker), to check for errors in a given Pod file. This is actually a Pod::Simple::Checker (or Pod::Checker) subclass, an

$^A The current value of the write() accumulator for format() lines. A format contains formline() calls that put their result into $^A . After calling its format, write() prints out the contents of $^A and empties. So you never really see the contents of $^A unless you call formline() yourself and then look at it. See perlform and formline PICTURE,LIST.

Comma Operator Binary "," is the comma operator. In scalar context it evaluates its left argument, throws that value away, then evaluates its right argument and returns that value. This is just like C's comma operator. In list context, it's just the list argument separator, and inserts both its arguments into the list. These arguments are also evaluated from left to right. The => operator (sometimes pronounced "fat comma") is a synonym for the comma except that it causes a word on its left