Essential Guide To Regular Expressions: Tools and Tutorials. Advertisement Regular expressions are an essential part of any programmer’s toolkit.
They can be very handy when you need to identify, replace or modify text, words, patterns or characters. In a nutshell: regular expressions (regex) are like a Swiss army knife for modifying strings of just about anything. Need to make your site URLs look pretty? Use regex. The 30 Minute Regex Tutorial. Free source code and programming help. Expresso 2.1C - 328 Kb Learning .NET Regular Expressions with Expresso Did you ever wonder what Regular Expressions are all about and want to gain a basic understanding quickly?
Regular Expression Tool. Regular Expressions Reference - Basic Syntax. The regular expressions reference on this website functions both as a reference to all available regex syntax and as a comparison of the features supported by the regular expression flavors discussed in the tutorial.
The reference tables pack an incredible amount of information. To get the most out of them, follow this legend to learn how to read them. The tables have six columns for each regular expression feature.