perl switch case multiple strings

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

The default Perl debugger is the perl interpreter, and a GUI debugger.Generally, telnet is used to access the server during development. This document describes the usage of the default command line debugger. Start the Perl interpreter with the-d

Perl language learning notes 9 Regular Expressions for text processing, perl Language Learning 1. Replacement S/PATTERN/REPLACE/; # returns the Boolean value of whether the replacement is successful. You can use capture variables, such as s/(\ w)/$1/

Vim command set and linuxvim command set in Linux Vim command collection Command history Commands starting with ":" and "/" have historical records. You can first type ":" or "/" and then press the up or down arrow to select a historical

This article is reproduced in the article, the original address: Http://www.ruanyifeng.com/blog/2016/07/yaml.html?f=tt Programming is unavoidable to write configuration files, how to write configuration is also a learning. YAML is a language

Regular Expressions are difficult to write, read, and maintain. Regular Expressions often incorrectly match unexpected texts or Miss valid texts. These problems are caused by the performance and ability of regular expressions. The ability and

What is a shell scriptShell scripting (English: Shell script), also known as shell Command Draft, programmatic script, is a computer program and text file, the contents of a series of shell commands, through the Unix shell literal translation of its

What is a regular expression?Regular expressions are used to find and replace patterns in strings. The regular expression is defined in a certain syntax, and the regular expression engine uses this syntax and compares it to a string. The engine

Regular Expressions are difficult to write, read, and maintain. Regular Expressions often incorrectly match unexpected texts or Miss valid texts. These problems are caused by the performance and ability of regular expressions. The ability and