Copy-on-write teaches you EVERYTHING about Swift Internals 🐮 isKnownUniquelyReferenced through the standard library, compiler, and runtime

🐮 𝐶𝑜𝑝𝑦-𝑜𝑛-𝑤𝑟𝑖𝑡𝑒 𝑡𝑒𝑎𝑐ℎ𝑒𝑠 𝑦𝑜𝑢 𝐸𝑉𝐸𝑅𝑌𝑇𝐻𝐼𝑁𝐺 𝑎𝑏𝑜𝑢𝑡 𝑆𝑤𝑖𝑓𝑡 𝐼𝑛𝑡𝑒𝑟𝑛𝑎𝑙𝑠 by Jacob Bartlett (@jacobstechtavern.com)

Trace 𝑖𝑠𝐾𝑛𝑜𝑤𝑛𝑈𝑛𝑖𝑞𝑢𝑒𝑙𝑦𝑅𝑒𝑓𝑒𝑟𝑒𝑛𝑐𝑒𝑑() from Standard Library through AST, SIL, and LLVM IR to Swift Runtime - how CoW works at every compiler layer.

#Swift #CompilerTheory #iOSDevelopment