👋 Hi, I'm Yos.

Most of us have a pet project graveyard. It could be software where we spent considerable time coming up with the perfect name, created a Github repo, purchased a domain name, and saw partway through but never quite finished. The project may have began strong, but came to a halt because more pressing work came up; or because we simply lost interest. In the end, nothing gets launched. Have you experienced this? Having unused domain names is a clear symptom...

If you’re working with a framework (like Rails, Django, Sinatra, or Flask), learning to use it is just scratching the surface. Be rigorous. Go deeper. Learn how it works. Let’s take a close look at real-world uses of metaprogramming. Metaprogramming is the writing of computer programs with the ability to treat programs as their data. It means that a program could be designed to read, generate, analyse and/or transform other programs, and even modify itself while running. We’ll deconstruct how...

I seem to be building APIs left and right, so in this post, we’ll build a RESTful API with Ruby. There are many approaches you can take when it comes to building an API with Ruby, such as the choice of using the grape DSL, Sinatra, or Rails. There's also design considerations to be made with regards to the language you write in. Node.js and Go is preferable when performance is a core requirement. As always, consider your requirements carefully...

In this post, we’ll be taking a close look on how to avoid the proverbial ‘Ball of Mud’ in object-oriented design. Specifically, we’ll be refactoring fat Rails models using ActiveSupport::Concerns. I highly recommend reading POODR for more in-depth refactoring techniques and proper OO design. It's helped me tremendously while working on SheetHub.

Static program analysis is the analysis of computer software that is performed without actually executing programs (analysis performed on executing programs is known as dynamic analysis). The term is usually applied to the analysis performed by an automated tool, with human analysis being called program understanding, program comprehension, or code review. – More on Static Analysis Have you ever wondered how QA services such as Codeclimate and New Relic measures your code quality? They use the Brakeman static analyser.

Missed RDRC? You can view the presentation materials here: Red Dot Ruby Conference 2014 I had the pleasure of attending this year’s Red Dot Ruby Conference, a locally organized tech conference for Ruby developers. RedDotRubyConf is the largest Ruby conference in South East Asia - a two day single-track event that brings together renowned international and local speakers. I’ve learned tremendously from the speakers, most of which were prominent OSS (open source software) and core Ruby contributors such as Koichi...

This week, each of the CS3216 Facebook seminar teams presented an application of their choice to the rest of classroom. In this post, I’d like to highlight the Airtime team’s most significant points together with my own original thoughts as three lessons I learned from Airtime - the dream team startup that ultimately flopped. Airtime is a video chat app that connects to your Facebook account and then connects you to other Airtime users who have similar interests, or are...

I spent two days in Google’s Singapore office for a series of workshops, and in this post, I’d like to write (in freeform) about the things I’ve learned from the program.

I was at this year’s Python Conference. This post summarizes what I learned.

In this post, I’d like to outline how to create and manage virtual environments each with its own, independent set of dependencies with the following packages: pip, A tool for installing and managing Python packages in the Python Package Index virtualenv, A tool for creating isolated Python environments containing their own copy of python, pip, and other packages virtualenvwrapper, A set of convenient enhancements to virtualenv virtualenvwrapper is a set of extensions to Ian Bicking’s virtualenv tool. The extensions include...