how to learn perl

The IIS server is fully configured to implement asp, cgi, perl and php + mysqlIIS. now we need to make IIS implement the software required for ASP, CGI, PERL and PHP + MYSQL (both for ForWindows): ActivePerl, PHP, MYSQL 1. ASP support: Needless to say, there is no need to do anything, and it supports ASP operation. II. CGI and PERL support: 1. install ActiveP Per

In Perl, references to subroutines are often used to make callback functions (callback), closures (closure), especially anonymous subroutines.callback function (callback)For a callback function, see the article Understand: lexical scope, dynamic scope, callback function, closureAs an example of a File::Find module's find function, it is used to search for a file under a given directory and then perform some operations on each of the searched files (by

A short Perl program allows for large functions.How does Perl do that?1. Default variablesIf no parameter value is supplied to the function, the default parameter is $_;If no variable is used to receive the value of an expression, the default receive variable is $_.Each statement in the Perl language can run like a pipe, $_ by default variables.2. Special syntaxT

Use regular expressions compatible with Perl in PHP Preface PHP is widely used in Web background CGI development. it usually produces some results after user data. However, if the user input data is incorrect, a problem may occur, for example, a person's birthday is "August February 30 "! How can we check whether the summer vacation is correct? We have added support for regular expressions in PHP, so that we can easily perform data matching. What is

The IIS server is fully configured to implement asp, cgi, perl, and php + mysql. The IIS server is fully configured to implement asp, cgi, perl and php + mysqlIIS. now we need to make IIS implement the software required for ASP, CGI, PERL and PHP + MYSQL (both for ForWindows): ActiveP IIS server fully configured to implement asp, cgi,

0x00 backgroundA few days ago someone told a conference about a problem that existed in Perl for 20 years. It's really heartbreaking to be a person who will only Perl without Python. After watching the video feel black to eat nothing.This is like a interrogates to Perl, the whole speech is full of sucks, fuck and other harmonious vocabulary, but also can see how

Method 1: The two-day use of MAVEN in building an application, because project is very large, there are more than 700 pom.xml files, and even more depressing is that in many pom.xml files are individually specified in the repository URL, I need to assign the URLs of these repositories uniformly to the Nexus local Central library. Manually change the file configuration is a bit less practical, so Google a bit, find the bulk of the replacement file content of a good way, the command structure is

Copy Code code as follows: #!/bin/perl Print "Please input some lines,then press ctrl+z. \ n"; Chomp (@s=Print "1234567890" x 3. \ n "; #做为输出结果的一个标尺 foreach $s (@s) { printf "%20s\n", $s #输出的格式为右对齐, 20 characters in space } Output results:f:\>perl\a.plPlease input some lines,then press ctrl+z.How to Are YouFine,thank^z123456789012345678901234567890How are you#u at 20th characte

number of the previous read file handle3, $/and $rs: Enter the record separator, the default is the new line character. If you use the undef variable, you will read the end of the file4, $, $ofs: output domain separator.5, $\ and $ors: Output record separator6, $:: Break the character, the default is "n" three characters7, $! : The numeric value of this variable is the errno value, and the string value is the corresponding system error string8. $@: The error message for the eval command. If emp

First, let's look at three basic definitions of Perl object-oriented programming: 1. An "object" refers to a simple reference that "there is a way to know which class it belongs to". (object is reference variable)2. A "class" refers to a simple package that "has the means to provide some method for the object belonging to it". (class is a package)3. A "method" refers to a simple subroutine that "accepts an object or class name as the first argument."

Not everything in the Perl community is posted on CPAN. There is even a module::thirdparty module that records the list of these CPAN Perl projects. One of the most famous should be the movable Type of blogging and the smokeping of monitoring. But if your personal chart is convenient and you want to pack smokeping for deployment, you'll find a small problem: packaging into RPM, many of Perl's dependent mod

According to personal experience, do not say the good and bad of both, just say the similarities and differences between the two. 1, variable name There are three definitions of Perl variable names, beginning with $,%, and @, representing general variables, hash variables, and array variables, respectively. PHP, for all the variables to be unified with the $ beginning, this, PHP seems to be more concise. And the hash array of PHP itself is already o