regular

Most computer users, especially software engineers, have had a need to modify multiple files to either add a line of text, modify a line of text, or completely remove a line of text. The problem is that there never seems to be a piece of software out there that can help you with this problem. Some programs let you get close to doing what you want but in my experience none ever let you do exactly what you want; so a few hours are spent opening each file and editing them manually.

In this topic, you'll learn how to use regular Java classes to do the processing that a JSP requires. In particular, you'll learn how to use two classes named User and UserIO to do the processing for the JSP of the Email List application.

Regular expressions are hard to write, hard to read, and hard to maintain. Plus, they are often wrong, matching unexpected text and missing valid text. The problem stems from the power and expressiveness of regular expressions. Each metacharacter packs power and nuance, making code impossible to decipher without resorting to mental gymnastics.

A Vision The job given me by the Almighty Programmer was gatekeeper. The clouds parted below me and I could see a long sinewy line of expressions marching toward me in single file. Some looked like dates, others like digits and some (to be honest) looked like gibberish. One by one, they would try to get past me but I know no fear - for I am the RegularExpressionValidator.

This page covers the very basics of understanding, creating and using regular expressions ('regexes') in Perl.

I recently had the problem of trying to search for a regular expression in a database field. There is no version of SQL Server that supports regular expressions natively, but I discovered a way to add all sorts of regular expression goodness to your T-SQL applications. In order to use regular expressions easily, we can use a User Defined Function to help us out and abstract the work for us.

One of the very basic computer 'rules' is to always make backup copies of your important files. That is not only good advice, it's extremely essential. You've probably heard the saying that it's not IF your hard drive will crash, but WHEN! But crashing is not the only way to lose files. What about accidentally deleting files, and then emptying the Recycle Bin?