A Practical Introduction to Task and Await — This post is an introduction on how to asynchronously execute code in Swift. First, a general view on the topic will be provided. After that, two concrete code examples will demonstrate on how to use asynchronous code in a practical real-life example. The code examples have been created for Xcode…

Databases are everywhere these days and with Change Data Capture one can turn these into a source for Event-Driven Systems without much effort. There are tools like Debezium and Kafka Connect that bridge the gap between these two worlds and therefore turning a classical data-driven application into an event-driven application. …

Detecting and Tracking Faces and Face Landmarks in Realtime — Welcome to another article exploring Apples Vision and VisionKit Framework. I have already written two articles and code samples that are using these frameworks. The first one that I have written in the past is “Barcode Scanner in SwiftUI”. The second article is quite young and is called “Document Scanner…

Everything You Need To Get Started Welcome to yet another episode in my series on Event-Driven Architectures. This is the third part of my series. So far we had: Event-Driven Architectures with Kafka and Java Spring-Boot + Revision 1 Event-Driven Architectures with Kafka and Python + Revision 1 This article…

Exploring a True-Serverless Event-Infrastructure — There is no denying, that the new Apple M1 MacBooks are awesome. I wouldn’t consider myself a fanboy, but those machines are awesome. Let me repeat myself: just awesome. Those processors totally rock in many aspects. Of course, here comes the “but”. Not everything is at a state where I…

Extracting Text From Documents Using Artificial Intelligence — In this tutorial we are going to learn how to scan documents and extract the containing text with Document Segmentation and Optical Character Recognition. A fully working iOS application which is provided as source code will help us understand which of Apples frameworks and specific classes are required to fulfil…

A Beginner-Friendly Tutorial For Everyone — Building a camera app is a typical task for an iOS-developer that might cross your path someday. There are plenty of tutorials out there that show you exactly that. I have also linked one that I especially liked down in the resources section. Almost all that I could find are…

A Quick Tutorial On macOS Monterey — Are you experiencing a problem where you are unable to start a service on your Mac that is using port 5000? Maybe you are a flask developer and banging your head against the wall why your app won’t start? This post provides the background of why port 5000 is already…

An Introduction to CoreBluetooth — This tutorial will provide a general approach on how to get data out of Bluetooth Low Energy devices by using heart rate and blood oxygenation monitor as an example device. For this tutorial I am using: Medisana PM100 Connect iPhone 11 Pro Max iOS 14.4 MacBook Pro, 13-inch, 2016 macOS…