Asynchrony and concurrency are distinct concepts in programming, with asynchrony allowing tasks to run out of order while remaining correct, and concurrency enabling multiple tasks to progress simultaneously. The article argues that misunderstanding these terms has led to unnecessary complexity in programming ecosystems, particularly in libraries and user experiences. It highlights how Zig’s approach to asynchronous I/O allows for single-threaded blocking execution without forcing users into asynchronous paradigms.
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