The actor model was proposed decades ago (1973) by Carl Hewitt as a way to handle parallel processing in a high performance network — an environment that was not available at the time. As a quick summary an actor is a message… Continue Reading
“We should do (as wise programmers aware of our limitations) our utmost best to … make the correspondence between the program (spread out in text space) and the process (spread out in time) as trivial as possible.” —Edsger W. Dijkstra, “Go… Continue Reading
The Swift Standard Library currently implements the three most essential general-purpose data structures: Array, Set and Dictionary. These are the right tool for a wide variety of use cases, and they are particularly well-suited for use as currency types. But sometimes, in order to… Continue Reading
The producer–consumer problem also known as the bounded-buffer problem is a classic example of a multi-process synchronisation problem. It is defined as follows: The Producer generates items in random time intervals and writes them into a bounded buffer. The Consumer consumes these items… Continue Reading
Swift is a programming language that is designed to work with Apple’s ecosystem. However, it can run on Linux. It is not just written for Apple products. If you do not have Mac hardware or you do not want to… Continue Reading
Xcode Playgrounds help developers explore Swift language and Apple framework APIs and provide a scratchpad for experimentation. Since Xcode 12 playgrounds have been integrated with the new build system and can also used with Frameworks and Package dependencies. As long… Continue Reading
Knowing the type and meta-type in Swift is not as common as in Smalltalk or Objective-C. Where in objective-c, you can instantiate an object out of a class name or modify classes at runtime this is not possible in Swift.… Continue Reading
The Cocoa frameworks and the Model-View-Controller pattern go hand in hand. A typical iOS application, for example, is composed of models, views, and view controllers. The model and view layers are glued together by the controllers of the application. Those… Continue Reading
In this article, you’ll learn all about encoding and decoding Dates in Swift to JSON, exploring the basics and advanced topics like custom dates and custom encoding. Overview Many programming tasks involve sending data over a network connection, saving data… Continue Reading
In 1868 Lewis Carroll published “The Alphabet-Cipher”. They say he did this in a kids magazine ?. While Carroll called his cipher “unbreakable” we know it is not. However it is still interesting to implement such a cipher as a… Continue Reading