Asynchrony should be a property of how a program is run, not a colour baked into the type of every function in the standard library.

Added to korrents 7 Sept 2026 · How quotes work · Something wrong? Tell us

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• Function colouring is the real cost of async/await, and green threads like Go's avoid it — but for an existing runtime such as JavaScript or C#, async/await was still the right solution. AHAnders Hejlsberg13 May 2026
• Splitting functions into synchronous and asynchronous kinds forces that distinction into every piece of code a programmer afterwards writes. BNBob Nystrom1 Feb 2015
• Concurrent code only becomes faster from parallelization when the underlying problem is itself intrinsically parallel. RPRob Pike4 Jan 2024
• A programming environment should provide exactly one concurrency model, since offering multiple concurrency implementations at once causes problems. RPRob Pike4 Jan 2024
• Async/await makes asynchronous code easier to write without healing the split it created, and the divide reappears as soon as you write a higher-order function. BNBob Nystrom1 Feb 2015

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