How I used Python to get back at an online scammer - and what I discovered in the process

Disclaimer: I really thought long about this, and I haven't slept in two days due to ongoing harassments of 4chan. As the first people were literally arriving at my place of living, where t...

Ever wondered how the ^.?$|^(..+?)\1+$ regular expression can tell you if a number is not prime? In this blog post you'll learn how and why it works. Code examples in Java, JavaScript, Python and Perl are provided.