perl string length

Perl's original designer was Larry Wall (Larry Wall), which was published on December 18, 1987. Perl borrows the features of C, sed, awk, shell scripting, and many other programming languages. Larry Wall Published version 1.0 of the Perl scripting

one. DataType (data type ):Perl's data types are roughly four: Scalar (variables), Scalar Array (array), hash array (hash), References (pointer), but they seem to be small but more than sufficient. In particular, you can write a Perl program without

I. Data Types(Data type): Perl has four data types: Scalar (variable), Scalar Array (Array), Hash Array (Hash), and References (pointer ), it seems to be rare, but it is more than enough to use it. Especially when writing Perl programs, you do not

About the origins and characteristics of Perl and Python Perl is the abbreviation of practical extraction and report Language, created by Larry Wall in 1987, originally designed to facilitate the processing of reports on UNIX, and has become a fully

How to Use eclipse to debug a Perl application before 11:30:36 This tutorial will introduce the debugging functions provided by the eclipse epic plug-in. This plug-in provides a rich debugging environment that can be used in the epic Perl

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,

As we all know, Perl is very powerful in processing strings, and Perl (Practical Extraction and Reporting Language) is also very powerful in processing formats. Here we start to learn some Perl formats and string processing. Familiar with the three

1. List and array. The list mentioned in this book is a data structure. array is the data type used to store the list in Perl. In most cases, these two words can be exchanged, meaning the same. Unlike C, the Perl array does not need to define the

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

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