In Objective-C, there are three different varieties of nothing . The reason for this goes back to how Objective-C bridges the procedural paradigm of C with Smalltalk-inspired object-oriented paradigm. C represents nothing as 0 for primitive values, and NULL for… Continue Reading
In computer science, the longest palindromic substring problem is the problem of finding a maximum-length substring of a given string that is also a palindrome. For example, the longest palindromic substring of “bananas” is “anana”. Some people will be tempted… Continue Reading
Swift package manager provides a convention-based system for building libraries and executables, and sharing code across different projects. Before you can use it you should make it available on MacOS by installing Swift Open Source Toolchain. Install Package Manager Download the latest package release –… Continue Reading
Greedy algorithms look for a simple, easy-to-implement solution to complex problems. These algorithms work by recursively constructing a smaller instance of the the same problem with a rule that is easy to understand and straightforward. The advantage is they are… Continue Reading
Today I found a one year old Zeiss VR One in the office. Everybody thought it does not work with Google’s cardboard app because it is missing the input button – what makes it useless. So I had a look at Google’s… Continue Reading
As a teenager I was used to implement simple mathematical algorithms on my Sharp pocket computer in BASIC. My first real Application was an AI board game written in the Pascal language on a Mac Classic II. It was a… Continue Reading
When Apple announced Swift 2 at the WWDC in 2015, they also declared that Swift was the world’s fist protocol oriented programming language. However protocols have been present in Java and Objective-C since many years. So why is Swift different? And what does protocol-oriented… Continue Reading
This Week I’ve been asked to do a code review, to determine the overall health of a existing App code base. Unlike a code walkthrough, where someone familiar with the code shows the main components, this is a code review where… Continue Reading
Today I wonder how simple and elegant I was able to implement the command pattern with Swift 2. I started as usual with a bunch of classes until I realised that Swift closures provide exactly what is needed to implement the command objects.… Continue Reading
App Transport Security (ATS) enforces best practices in the secure connections between an app and its back end. ATS prevents accidental disclosure, provides secure default behavior, and is easy to adopt; it is also on by default in iOS 9… Continue Reading