Input DOES NOT match regular expression. C:\>TestRegExp ^\d {5}$ 12345 Input matches regular expression. As this code demonstrates, the Regex.IsMatch method compares a regular expression to a string ...

Code Focused Extracting Data with Regular Expressions Regular expressions give Tim Patrick the creeps, but he overcame his fears by discovering specially crafted regex patterns can access data in a ...

So the regex [Ff]rankfurter is the same as the above example. Brackets support ranges though, so ^[A-Z] will match any line that starts with a capital letter. It also supports numbers, so [0-9]$ will ...