Recently I have been playing with Ember.js. It is a javascript front-end framework for developing web applications. You can find more details and really thorough guides on their website. As my new blog post, I have decided to create a tutorial for building a simple markdown editor (in ember). Markdown, for those unaware of it, is a simple, lightweight markup language. I use it a lot for my github readme pages. While there are several great applications for editing markdown in real time out there, I thought it would be a good exercise to create one of my own, and since this is really easy to do in ember, I am showing it as a simple tutorial.

Strings in Ruby are, just like in other programming languages, objects for handling text. If you ever tried to write some Ruby code, you are familiar with them and their syntax. But this post is not about syntax that is well known. While reading through some ruby books and tutorials I found some pretty interesting ways of dealing with strings.

I’ve been going through Ruby Best Practices book lately and, while it covers a lot of interesting topics, one thing caught my eye. It was sub-chapter about memoization.

Memoization is an optimization technique used to speed up your programs by avoiding to repeat function calls for already calculated inputs.