Writing a single routine that does all the validation would be very difficult and tedious. The Regular expressions tool, however, can be used to validate all user inputs. It can make your code faster, more efficient, and less error prone. Regular expressions are a powerful tool for searching and processing text, and even in its simplest form, can make many complex tasks easy. This article provides a brief tutorial on the basics of Regular expressions and shows how the module can be extended to test border conditions.
Regular expressions are a tiny, highly specialized programming language.
They used to only be familiar to Unix users. Text editors like vi allowed regular expressions-formatted searches. Finally, Microsoft decided to give the same power to us and implemented it in Interdev. Most likely people haven't noticed it when they are using Find in Interdev. When Microsoft started creating scripting languages for the Windows platform, only JScript contained regular expressions, leaving VBScript alone in the dark.