Mark Time

Mark Time is an application for Celestial Navigation that solves the problem of how to take an accurate time reading to go with each sextant sighting. Here is how it was developed…

Moving to Hugo

Yesterday, I came to update my blog: I had a new post in draft form and I wanted to update the Swift code to version 4. However installing High Sierra had removed Jekyll which is the site generator that I had been using. I re-installed Jekyll but found that it had been updated from version 2 to version 3.

JSON Parsing in Swift 4

Updated: 3rd September 2017.


Since JSON has become the de facto standard for data transfers around the internet, there has always been a lot of interest in Swift libraries to parse JSON into Swift classes or structs. Searching for “swift json library” on GitHub discovers 77 86 repositories. So why are there so many? And what has Swift 4 done to sherlock them all?

Posting from my new iPad

Last week I got a 10.5” iPad Pro. I have had an iPad ever since the original release, but I have to confess to mainly using it for content consumption rather than creation. Since I am usually close to a Mac anyway, there didn’t seem a lot of point. But now that iOS 11 is really addressing the issue of making the iPad a “pro” device, I decided to give it a try.

JSON Feed for TrozWare

jsonfeed.org has announced a new format for web site feeds, designed as an alternative to RSS. TrozWare has had an XML RSS feed for years, but I don’t think anyone ever uses it (I certainly don’t), so today I have replaced it with a JSON feed, which you can access through the button at the top of every page.

Blackmail Marketing

I use my iPad to play games as a form of relaxation. Nearly all the games I play are puzzle apps with levels that can be played in a few minutes. Nearly all of them are free to install. So how do they make money? Now I would be the last person you should consult about marketing but it has always seemed to me that the best way to market your product is to convince people that it offers something they want so that they are prepared to pay for it.

NCSS 2017

I gave a Masterclass on Swift at the NCSS Summer School 2017 in Sydney on 8th January 2107. This post contains useful links for use during and after my class.

Looking for beta testers

I am looking for beta testers for my latest Mac app: Work. Work is a project organizer app for developers, designers, students or any professional who works with multiple projects involving files & folders, web pages, email addresses and lists of tasks. Click the link above for more information and help for getting started. Work requires macOS 10.12 or OS X 10.11. If you would like to test this app, please contact me, giving details of your Mac and operating system.

Another Man Reader Update...

A quick update to Man Reader to version 1.8 is now available through the Mac App Store. The main reason for this version was that Man Reader was not previously detecting man pages installed by third-party IDEs in the Applications folder. There was also an issue with Man Reader failing to display the text of the previously selected man page on app launch. More complete search for man pages, including in third-party IDEs.

Man Reader Update

Man Reader has just been updated to version 1.7 and is available through the Mac App Store. The main reason for this update was to make the app work well with macOS Sierra, as I found that version 1.6 was sometimes crashing on launch. While doing this, the update was rejected by the App Store reviewers because it crashed on OS X 10.10. Since I no longer have a Mac running 10.