A blog of my programming experience
I have made a web app to show Citybus & NWFB combined ETA, which was released last month. It has two distinguishing features which bring convenience to users (including myself): It can show the first 3 upcoming departures for any combination of…
The government of Hong Kong has released public transport data set as GTFS. In response, I have built an OpenTripPlanner instance to work on those data as an experiment to have 100% open data public transport routing. The instance is currently accessible…
The type system in PHP has become safer each version since PHP 7.0, by using a strict type declaration on top of the PHP file. As a newly-developed feature, it doesn’t come with the billion-dollar mistake of allowing NULL for variables declared…
I started building my own website in 2008 when I was still in secondary school using PHP and (X)HTML. At that time, the PHP version was only 5.2, without modern features like namespaces, late static bindings, closures, type safety, etc. There was…
After my previous post about static members in various programming language, I decide to write a post about the word static in depth. static is a key word in multiple programming languages, with multiple distinct but related meanings. The history The static…
static keyword is used to represent class members, i.e. members which are shared among the class, as opposed of instance members which is unique to an object instance, in many programming languages, including PHP. However, the static functionality in PHP is much…
Nothing, the opposite of something, does not exist. To represent something is trivial, but, how we can represent nothing is a great philosophical problem. What is nothing? Even when put in the context of application, the concept of nothing may not be…
In the past, about the years I was in sixth-form and first-year university, I used KOrganizer for my calendars, which is the first calendar software that I use, in conjunction with Kontact. I love KOrganizer. It is feature-rich. It allows me to…
As my programming experience begins to diverse, from traditional command-line programs to web and app development, I have used many programming languages, some of which I like, and some I don’t like. One particular aspect of programming languages, type system, contributes to…
I completed the he.net IPv6 Sage certification in January this year and have just received the T-shirt. I started the certification programme in 2011 when I upgraded my network infrastructure to properly support IPv6. I did all the way through guru, but…
