Meta-characters. There are special characters in regular expressions, some of them include: d matches any digit, equivalent to [0-9]; D matches any character that’s not a digit, equivalent to ...

Regular expressions (regex) are one of the most powerful tools we have in our SEO arsenal, but they’re incredibly intimidating! Here are some tips and tricks from one SEO to another that I ...

Regular expressions can be extremely powerful–and extremely complicated. If you’re interested in learning more, there’s no better resource than Jeffrey E. F. Friedl’s Mastering Regular ...

Regular expressions come in handy for all varieties of text processing, but are often misunderstood--even by veteran developers. Here's a look at intermediate-level regular expressions and what ...

The regex pattern might be similar which may be hard to spot but just one character makes a world of difference when using regex. So what if you're writing a PowerShell script and you'd like to use ...

Regular expressions can be difficult both to write and to read; fortunately, there are some great tools that can help. To jump-start your understanding of more complex expressions, I recommend a free ...

Regular expressions almost always allow for more concise code, but that does not always translate to “easier” or “more readable” code.

Regular expressions -- those scary strings that might as well be written in Klingon to the average person -- can be a vast time-saver. They help in one of the most common tasks of programming: string ...

Regular expressions also provide special characters to represent common character ranges. You could use “[0-9]” to match any numeric digit, or you can use “\d”. Similarly, “\D” matches any non-numeric ...