The people who attended my presentations at RMOUG Training Days 2010 asked several good questions. One question that was asked in the Groovy presentation that I really wish I had included a slide on ...

Every programmer can find uses for regular expressions, but their power doesn’t come worry-free. Even seasoned users often suffer from poor performance, false positives, false negatives, or perplexing ...

Imagine you are looking for a name in a telephone directory, but you can't remember its exact spelling. You can spend ages searching through all the possible combinations, unless you have a tool that ...

How do you find out if a user has entered a valid email address? Do you check for an at-sign, or is it more complicated? For many developers the answer is a regular expression, a little bit of code ...

Once you get the hang of regular expressions, you'll find them invaluable. The trick is to start small - I'll show you how. Quick: If you shout “regular expressions” in a crowd of Linux users, what ...

Regular expressions are a common feature of computer languages, especially higher-level languages like Ruby, Perl, Python, and others, for doing fairly sophisticated text-pattern matching. Some ...

I was just wondering what people think is the best C++ regular expressions library. I have seen three so far: the libary bundled with Boost, GRETA, and Zopyra. I'm not really looking for super general ...

Data quality is one of the biggest challenges for many data warehouse and business intelligence (DW/BI) system managers. One common problem, especially with free-form entry data, is that the structure ...

The "failglob" option will probably be of interest to many users. When set, this option will cause an error when a regular expression fails to match any files ...