Images can be used in a variety of ways to create engaging and entertaining iOS Apps. Images can be used as backgrounds, icons, buttons and to improve content. This article shows how to add an image in Xcode and goes through some of the display modifiers to use to control the image display.
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SwiftUI uses a declarative approach to creating the User Interface. This means the code is written to state what the user interface should look like. Stacks provide a mechanism to define the layout arrangement of multiple views in a SwiftUI app.
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Text is displayed in SwiftUI using the Text view. A Text view is displayed by default when a new iOS app is created and is set to contain the words "Hello world!"
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The Fibonacci sequence is a series of numbers where each number in the sequence is the sum of the preceding two numbers, starting with 0 and 1. It is natural to consider a recursive function to calculate a subset of the Fibonacci sequence, but this may not be the most efficient mechanism.
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We came across the water pouring puzzle again recently and there was some discussion on where to start and explain how to slove it. The specific puzzle we came across was given two containers of sizes 7 and 4 litres, measure out a volume of water that is exactly 5 litres. A tap is available to refill the containers and …
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Three dimensional objects are not easy to represent on a 2D surface such as a page or screen. In this article, inspired by chapter 3 of Math for Programmers book, we look at the cross product of two 3D-vectors and representing the surface of any 3D object as a collection of triangles. The cross product can be used to …
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Compressing multiple files into one archive file allows for faster files transfer. Image files in the form of jpg are already compressed and compressing them into zip files does not significantly reduce the file size further. However, it does reduce the number files to one archive file and this makes file transfer …
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The world around is in three dimensions, yet it is not as easy to represent on a 2D surface such as a page or screen. This article, inspired by chapter 3 of Math for Programmers book, looks at presenting 3D vectors with Matplotlib. It also shows how to calculate the length of 3D-vectors and explores the dot product of …
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A vector has magnitude and direction. A single point in 2D space can be considered a vector from the origin (0,0) to that point. Vectors can be described anywhere in 2D space using a point for the start and a point for the end. Multiple vectors can be connected together to create 2D shapes. This article will discuss …
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This is the first article on my notes from reading Math for Programmers. It looks at representing 2D vectors graphically with Matplotlib and visualising vector arithmetic.
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