The first time I used Logo, it felt like magic. I could type a short sequence of simple commands, and draw beautifully complex shapes on the screen. In this tutorial, I will show you how to parse and interpret a Logo-like language in just 70... View Article
Three months ago, I wrote a post detailing the process of writing a calculator using a parsing library. The popular response, however, was that readers are far more curious about seeing a calculator written from scratch, with the batteries included but nothing else. I figured, why... View Article
Introduction In this post I will demonstrate how to parse and calculate an arithmetic expression a general-purpose parser. When we're done, we'll be able to handle expressions such as 1 + 2 * -(-3+2)/5.6 + 3, and hopefully you'll have gained the tools to handle... View Article