Swift Playgrounds by Category

An overview of playgrounds with some categorisation.

Computer Science Theory & Algorithms

Swift Playground	Topic
Factorial	Very simple demo of a recursion algorithm in Swift
Function Call Mapping	Demonstration of calling functions dynamically using a routing pattern
Syntax Tree	Demonstration of a tree algorithm adapted to the Swift programming language
Tail Recursion	Demonstration of the tail recursion algorithm adapted to the Swift programming language
Using Opaque Types	Demonstration of using Swift opaque types
Using Phantom Types	Demonstration of using phantom types in Swift

Networking

Swift Playground	Topic
DNSResolve5	Resolve host names from a given IP address using Apple’s Core Foundation with CFHost. This won’t resolve the host alias names, though
IPHostAddressResolution5	Resolve host names from a given IP address using GLibC’s standard networking C function gethostbyaddr. This does resolve the host alias names
IPHostAddressResolution5 SwiftUI	Same as IPHostAddressResolution5 with a simple UI

Integrating C

Swift Playground	Topic
IPHostAddressResolution5	Resolve host IP address by a given name using GLibC’s standard networking C function gethostbyaddr. This does resolve the host alias names
IPHostAddressResolution5 SwiftUI	Same as IPHostAddressResolution5 with a simple UI

SwiftUI

Swift Playground	Topic
IPHostAddressResolution5 SwiftUI	Same as IPHostAddressResolution5 with a simple UI
Pulsating Custom Button	A custom SwiftUI button with a blinking LED indicator mimicking buttons found on KORG’s synthesisers
QR Code	How to platform-independently generate a bitmap QR code using Apple’s CoreImage CIFilter
QR Code iOS	Same as QR Code, specifically designed for i(Pad)OS
QR Code macOS	Same as QR Code, specifically designed for macOS
SpeedMaths	A simple example of using a list view with a custom row content view with field-exit handler and context-dependent colouring