Understanding Xcode Build System
https://www.vadimbulavin.com/xcode-build-system/

Swift Compiler
https://swift.org/swift-compiler/

Functions in Swift: Pure, Higher-Order and First-Class Functions, Currying and Partial Application
https://www.vadimbulavin.com/pure-functions-higher...

Memory layout in Swift
https://theswiftdev.com/memory-layout-in-swift/

SwiftTips
https://github.com/JohnSundell/SwiftTips#1-namespa...

Hash Tables
https://www.raywenderlich.com/206-swift-algorithm-...

Swift Copy-on-Write mechanisms
https://medium.com/@lucianoalmeida1/understanding-swift-copy-on-write-mechanisms-52ac31d68f2f

RunLoop
https://medium.com/e-legion/gotta-go-fast-building-for-speed-in-ios-efc78a626a9c