Test Driven Development is a process of writing unit tests for software before writing the code to get those tests to pass. Many of us struggle to write the tests before we write the software, but this has gotten easier in Xcode over the years. This article demonstrate an approach for implementing a simple version of …
Read More

I just couldn't let the Monty Hall problem go. What if there were more doors in the problem. In this article I create a simulation of anywhere from 3 to 6 doors with the underlying premise that after selecting a door, all but one of the remaining doors are opened. The contestant is then offered an option to switch …
Read More

Monty Hall Problem in SwiftUI - Simulation. An SwiftUI app was developed for the Monty Hall problem and is described in part 1. The solution to the problem is that the contestant should always switch doors when the host opens the door to reveal a goat and offers the contestant the option to switch doors. This article …
Read More

I love the Monty Hall problem, even though I find it counter-intuitive. The Monty Hall problem is a form of probability puzzle named after American game show host Monty Hall. It is presented in the style of the game show, called Let's Make a Deal, where you are given a choice of selecting one of three doors. Behind one …
Read More

Card-style views are common in iOS apps as they provide a nice way of visually separating data on a small screen. This article walks through how to animate the flipping of a card in SwiftUI.
Read More

Activity Rings have become ubiquitous since the introduction of the Apple Watch. The default is to have three circular activity rings for move, exercise and stand goals for the day. An Activity Ring is a type of circular progress bar that start at 12 O'Clock in clock notation and extends clockwise as activity …
Read More

Horizontal Bar Charts present categories of data as rectangular bars with the widths proportional to the values they represent. This article shows how to build on the vertical bar chart to create a horizontal bar chart.
Read More

A vertical Bar Chart presents categories of data as bars with the heights proportional to the values they represent. This article shows how to enhance the basic bar chart by displaying data with multiple sets of data for each category. In the bar chart, the bars are grouped into their categories and color is used for …
Read More

In previous articles we created bar charts in SwiftUI and then added x and y axis to the chart. The bar chart can look cleaner without one or both axes, so in this article, we will customise the bar chart to show or hide the axes.
Read More

SwiftUI is a declarative framework for constructing user interfaces (UI) for iOS Apps as well as other Apple Platforms. In SwiftUI most parts of the user interface are composed of views nested and arranged to present a cohesive App. It is frequently required to present a number of similar views, and a for or while loop …
Read More