Manual Memory Management in Swift

While working my way through a blog post by Jeremy Howard, a missing piece in the puzzle of working with audio data in Swift bubbled up to the surface of my mind, specifically how Swift's handling of mutable value types using copy-on-write might result in multiple memory allocations while writing values into a buffer, exactly what you don't want in a real-time context.

This realization led me to open The Swift Programming Language in the Books app and search on the word "buffer" which led to this link, Manual Memory Management, which is clearly the right starting point for investigating the handling of buffers when copy-on-write is not what you want.