Programming Archives

Dart – implementing the Singleton pattern with factory constructors

In Dart there is an interesting language feature called ‘Factory Constructors’, which effectively allows you to override the default behaviour when using the new keyword – instead of always creating a new instance the factory constructor is merely required to return an instance of the class, the difference is important. Factory constructors allow you to …

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Mostly Erlang episode 13

Erlang, F#, Me

I was recently invited to chat to the Mostly Erlang podcast about F#, with co-host Bryan Hunter, Fred Hebert (author of the excellent Learn You Some Erlang for Great Good!) and fellow F# addict Phil Trelford (author of many popular F# libraries such as TickSpec, Mini Rx and Foq). It’s always nice to talk about …

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Whack A Meng – new Here Be Monsters mini-game made with Dart and StageXL

Dart, Games, Here Be Monsters, Programming

Hot on the heels of making my first game with Dart and StageXL at the London GameCraft 2013, I decided to strike whilst the iron’s hot and make a mini-game featuring characters from our MMORPG Here Be Monsters. The result, is a whack-a-mole style game where the antagonist is ‘Meng the Terrible’ from the …

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Adrian Cockcroft on Dystopia-as-a-Service

AWS

Dystopia as a Service from Adrian Cockcroft And finally, a good summation of the talk here.

London GameCraft 2013 – Agents of P.R.I.S.M

Dart, Games, Me, Programming

After an 11-hour marathon session at the London GameCraft event yesterday, I am very proud to say that my team’s entry – Agents of P.R.I.S.M was awarded with the MOST INTERESTING INTERPRETATION OF THE THEME award for the theme of the day – Impact of P.R.I.S.M. It was a great day out for the guys …

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Project Euler – Problem 60 Solution

F#, Functional Programming, Programming

Problem The primes 3, 7, 109, and 673, are quite remarkable. By taking any two primes and concatenating them in any order the result will always be prime. For example, taking 7 and 109, both 7109 and 1097 are prime. The sum of these four primes, 792, represents the lowest sum for a set of …

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Amazon ELB – Some caveats around health check pings

AWS, Programming

We recently found out about an interesting, undocumented behaviour of Amazon’s Elastic Load Balancing (ELB) service – that health check pings are performed by each and every instance running your ELB service at every health check interval. Intro to ELB But first, let me fill in some background information for readers who are not familiar …

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Customizing document styles with FSharp.Markdown.Pdf

F#, FSharp.Markdown.Pdf, Functional Programming, Programming

Following on from my last post on formatting a Markdown document into PDF using FSharp.Markdown.Pdf, if you don’t like the default styling (which I tried to mimic style Github formats Markdown documents with) you can set your own styling for the different types of Markdown elements by going down a level of abstraction. The FSharp.Markdown.Pdf.MarkdownStyleNames …

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S3 – Masterclass Webinar slides

AWS, S3

I stumbled across a set of slides with a rather comprehensive overview of the different aspects of S3, worthwhile reading for anyone who works with Amazon S3 regularly. Enjoy! Masterclass Webinar: Amazon S3 from Amazon Web Services

F# – PDF fun with Markdown and FSharp.Formatting

F#, FSharp.Markdown.Pdf, Functional Programming, Programming

I spent the last couple of nights putting together a simple Markdown to PDF formatter using Tomas Petricek’s FSharp.Formatting project and the PdfSharp-MigraDoc library. To use this library, you can either grab the source from the GitHub repository or get it from Nuget using the following command: F# Usage To use the library from F#, …

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