What is an actor and why does Swift have them? - a free Swift Concurrency by Example tutorial

What every systems programmer should know about concurrency—a very dense but impactful read. Things like lock free and wait free synchronisation techniques will stop seeming like black box if you understand this. https://t.co/XB0B2603O8

I don't know where I found this paper, but this is a great intro to concurrency. https://t.co/UrpCbTagvD