Regular expressions are a major feature of the Perl language and a bit of a pain in the Perl program, but if you have a good grasp of him, you can easily use regular expressions to complete the task of string processing, of course, in the CGI programming will be more handy
Thanks to aka and the author.
Regular Expressions in Perlthree forms of regular expressions
Common patterns in regular expressions
T
Perl is a practical summary and reporting language that is popular with developers around the world, and although it was born and developed on Unix, it has a niche in the area of Windows programming.
Under the leadership of companies such as ActiveState, Perl began to develop steadily from the middle of 1995, not only adding standard Perl functionality, but also
First, we recommend a good module download site: http://search.cpan.org
Today in Windows XP installed on the ActivePerl-5.12.2.1202-MSWin32-x86-293621.msi, open the project under eclipse, there are a lot of places to prompt the error is because the local no installation of related modules caused, then download the template from the above website for installation.
Many errors encountered during the installation process are recorded here, hoping to help those who need to perform similar operations
Learning Perl 4ed Reading Notes
Chapter2 scalar data1. Numbers. All data (INT, float) is of the double type in Perl. Of course, sometimes Perl also uses integer to represent int internally, because this can improve the running speed of the program, but these logics are invisible for programmers, we don't have to worry about it.
2. Floating-point and integer lite
url:http://www.xi-ju-an.com/date/2005/11/
Perl's source code installation is fairly simple, and Perl 5.84 is the fastest installation in the following waysRm-f config.sh policy.shSH configure-deMakeMake TestMake install
Of course, we should also be more practicalThe following I install on the Perlchina server
1. Installation environment and source download/Perlchina server is RedHat Enterprise Linux Adv serv 3.0 Update 2 This is the Advanced Server v
Compile and install perl (5.16.1) in CentOS)
First download the latest perl source code package:
[Root @ akinlau/] # wget http://www.cpan.org/src/5.0/perl-5.16.1.tar.gz
Decompress the source package[Root @ akinlau/] # tar-xzf perl-5.16.1.tar.gz
Compile and install. The directory can be customized.
[Root @ akinlau/] # c
Perl as an explanatory language, is very popular with the system administrators, the benefits of not much to say, the disadvantages of many, such as the support of the thread has been not good, so most of the time, we need a number of processes to help us complete the work, gossip less, on the code. #!/usr/bin/perl
# test_proc.pl
# Test Multi Process
# Create by lianming:2009-08-12 use strict;
Use warnings;
transferred from: http://perl.apache.org/docs/general/perl_reference/perl_reference.html
Use (), require (), do (),%inc and @INC explained
The @INC array
@INC is a special Perl variable which is the equivalent of the shell ' s PATH variable. Whereas PATH contains a list of directories to search for executables, @INC contains a list of directories from which Perl Modules and libraries can be loaded.
This article mainly introduces the CPAN use of Perl learning notes, this article explains what is CPAN, Cpan directory role Introduction, CPAN Install Perl module two methods and so on, the need for friends can refer to the
CPAN (Comprehensive Perl Archive Network: A comprehensive Perl archive network) is the central
similar to list
For array reference, $ {$ ref} can be abbreviated as $ ref->. For example, you can describe $ {$ ref} [2] to $ ref-> [2]. note $ {ref} [2]} [1] as $ ref-> [2]-> [1], for more information, see $ ref-> [2] [1].
Use UNDEF to destroy a reference: UNDEF $ ref; Perl maintains a reference count for the referenced data. When the count is reduced to 0, the referenced data is destroyed and the memory space is released.
Using references ma
Compared with Java and. NET platforms, dynamic languages are lightweight, flexible, and efficient in development, but there are still some gaps in integration cohesion. Therefore, they are usually used as lightweight solutions. LAMP is a network development platform consisting of Linux, Apache, MySQL, and scripting languages including PHP, Perl, Python, and Ruby, it features openness, flexibility, rapid development, convenient deployment, high configu
CPAN (Comprehensive Perl Archive Network: A comprehensive Perl archive network) is the central repository for any Perl-related stuff. It contains the wisdom gathered from the entire Perl community: Hundreds of Perl modules and scripts, the equivalent of several books, and th
Preview
◆ The language development trend must be dynamic and dynamic combination and flexible.
◆ Perl is concise and obscure, python is elegant and clear, Ruby is exquisite and smart, and PHP is concise and simple
◆ Perhaps elegance comes from the emphasis on details and specifications.
◆ (ROR) When combined with Ruby, it immediately sets off the figure of Java and. Net elephants as a ghost cat.
Question
◆ What are the characteristics of
Perl Overview
Perl was first developed by Larry Wall and is a "glue" language, for example, converting the output of the previous program into the input of the next program. The first version of Perl was released in December 18, 1987 and has been steadily upgraded until Perl 5. Per
Author: gnuhpcSource: http://www.cnblogs.com/gnuhpc/
1. Differences and relationships between Shell and PerlPerl is full of 10 thousand gold oil. It has implemented the functions of various system commands from its own interior, which is much more efficient. Moreover, it has specialized debugging tools that support object-oriented design, both small scripts and large applications are competent.Shell scripts are only applicable to simple system management. In my opinion, shell is like a binder. I
DescriptionWhen you configure some services, you need to install the Perl module. There are two ways to install the Perl module: Manual Installation and automatic installation.The perl–mcpan–e ' Install XXX ' automatically installs the Perl module, the module is not down, most likely the
Hi everyone. Today I'll start a new series of esssays introducing the elementary knowledge of Perl, a computer language of which prob Ably many of us never heard. I ' ll try my best to articulate my idea. If There is something your disgree with, please feedback to me and I'll seriously consider your views.I. What's Perl (practical Extraction and report Language)?Just as C + +,
Perl Introduction
Perl is a computer programming language with rich functions. It runs on more than 100 computer platforms and is widely used, from mainframe to portable devices, from rapid prototyping to large-scale scalable development. Perl was first designed by Larry Wall in December 18, 1987. The current version is Perl
Reprinted: http://blog.csdn.net/jallin2001/archive/2009/11/13/4808618.aspx
The regular expression character set is often used to extract or exclude Chinese characters from a string. However, this is very troublesome and the effect is not very satisfactory. In fact, Perl has started to use utf8 encoding internally to represent characters starting from 5.6. That is to say, there should be no problem in processing Chinese characters and other language c
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