We have a custom Swift class and want to use it as the key of a dictionary. How do we do that?
Author: Burkhard Stubert
Beacon Ranging in the Background
When beacon ranging is active on your iPhone, apps can subscribe to regular updates of the beacons in range. I’ll show you how to set up beacon ranging such that apps receive these updates both in the foreground (easy) and in the background (not so easy).
Responsive QML HMIs with File Selectors
In my previous post, I have shown how to use scaling to adapt QML HMIs to different screen sizes and formats. We reach the limits of scaling if we must change the structure of the HMI or if the HMI must be pixel-perfect. The solution to these problems is to provide a different implementation for...
Responsive QML HMIs with Scaling
The HMIs of in-vehicle infotainment systems, TVs, phones and many other systems must adapt to different screen resolutions and formats. This adaptation should happen with as little duplicate effort as possible. The simplest way of doing this for QML HMIs is to scale the values of all x, y, width, height, margin and border properties...
Offshoring Must Be About Finding Good Developers
Over the last 1.5 years, I worked with two Western automotive tier-1 suppliers who use near- and far-shoring to develop most parts of their infotainment systems. Both suppliers use offshoring to reduce their development costs. But how can these offshoring projects be cheaper if a good developer is easily 10-20 times more productive than an...
What Makes a Developer Truly Professional
QA finds many bugs that are very easy to catch. Builds contain warnings and runs error messages and even violated assertions. Coding guidelines and good coding practices are ignored. Unit tests are only written to drive line coverage up. Acceptance tests are missing. Code is committed although some tests are failing. Releases are prepared manually....
QtCreator – Search & Replace with Captured Texts
I wanted to replace many occurrences of g_theme.themeDisplay(100, 80, 65) by g_theme.thSz([100, 80, 65]) in many QML files. The values of the three integer arguments varied from occurrence to occurrence. What I hoped for was that QtCreator’s search & replace function for regular expressions would support captured texts – the three arguments.
Building HMI of Harvester with Qt
At Qt Developer Days 2014 in San Francisco, I gave a talk with title “Case Study: Driver Terminal for Forage Harvester”. I describe the technical challenges and their solutions when I helped Krone to develop the driver terminal of their new BigX 480/580 forage harvesters with QML, Qt and C++. Here are the slides of...
HMIs of Agricultural Machines for 2016
The University of Osnabrück invited me to give a talk about “HMIs of Agricultural Machines for 2016” at their COALA Symposium “Assistance Systems and Human-Machine Communication in Agricultural Engineering on October 30, 2014. Here is the abstract of the talk.
Revolutionary HMI-Design of Forage Harvester
Agricultural OEM Krone bets on Qt software library for development of their terminal / First prototype read in less than three months 585 horsepower, 15.6 litres engine displacement and an up to 9 metre wide cutterhead – forage harvesters are among the most powerful agricultural machines. It takes a lot more technology and know-how to...