perl bible

Part I Programming Perl 1 Perl Data Types 1.1 Funny Characters Type Character Example is a name for: Scalar $ $cents An individual value (number or string) Array @ @large A list of values, keyed by number Hash % %interest A Group of values, keyed by string Subroutine how A callable

[Email protected] ~]# wget http://www.cpan.org/src/5.0/perl-5.26.1.tar.gz[Email protected] perl-5.26.1]# cd/usr/local/[Email protected] perl-5.26.1]# tar zxvf/root/perl-5.26.1.tar.gz[Email protected] local]# CD PERL-5.26.1/[Email protected]

Perl|window first step, prepare the required files. Setting up PHP Local development for Windows is actually very simple, but the documentation for the use of these software is very difficult to understand and is in English. The following is a combination of experience, the specific installation methods, step-by-step elaboration. Here are the Apche 1.3.11, PHP 4.04, Perl 5.001, and the MySQL 3.22.34, which

This is notes from reading the "Object Oriented Perl programming ". Elements of the @ _ array are special in that they are not copies of the actual arguments of the function call. rather they are aliases for those arguments. that means that if values are assigned to $ _ [0], $ _ [1], $ _ [2], Etc ., each value is actually assigned to the corresponding argu-ment with which the current subroutine was invoked. sub cyclic_incr{ $_[0] = ($_[0]+1) % 10;} p

Transferred from: http://www.mike.org.cn/blog/index.php?load=readid=643 http://www.cnblogs.com/itech/archive/2009/08/10/ 1542832.htmlPerl has added the concept of modules to the fifth edition to provide the ability to object-oriented programming. This is a milestone in the development of the Perl language. Since then, the vast majority of free software enthusiasts have developed a large number of powerful, ingenious

'), System, and exec in Perl In Perl, the check mark (''), system, and exec are used to execute the command order. This article will show us how they are used, approached, and differentiated. I. utilization methods 1. check mark ('') First of all, we have a number order Input operator, also known as the Anti-hook operator, because it looks like this: $ Info = 'finger $ user '; A variable is used to replac

Differences from Perl PCRE function PCRE Patterns PHP manual Schema Syntax (No version information available, might only being in SVN) Schema syntax-syntax explanation for Perl compatible regular expressions The PCRE library is a set of functions that implement regular expression pattern matching with the same syntax and semantics as Perl 5, but there are a

Preface: Definition:The concept of singular and plural: Scalar is a single thing. perl uses scalar (the simplest data type in perl) to call a single thing. For most scalar values, it is either a number or a string composed of characters (perl does not have the concept of a single character, and a string is a single thing as a whole ). Association:The scalar can b

Perl is generally considered to be the abbreviation for practical extraction and report Language, a language evolved from C and sed, awk, Unix shell, and other languages. It was originally invented and implemented by the linguist Larry Wall. Perl is a language that is optimized for scanning arbitrary text files, getting information from these text files, and printing reports based on that information. It is

1. install the Perl environment yuminstallperl *. the command basically installs the perl module. YuminstallcpanCPAN. If you have high requirements on the perl module version and want to use the new version, follow the steps below to install yuminstallperlyuminstallcpan and compile and install it with cpan. 1. install the Per