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A comment on Looking at Unity made me understand the point of C++ coroutines. Parent comment

Re:Looking at Unity made me understand the point of C++ coro... by usrnm on Wednesday March 25, 2026 @08:57AM (#47516738)
> Just use lambdas/callbacks

"Just" is doing a lot of work there. I've use callback-based async frameworks in C++ in the past, and it turns into pure hell very fast. Async programming is, basically, state machines all the way down, and doing it explicitly is not nice. And trying to debug the damn thing is a miserable experience

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Re:Looking at Unity made me understand the point of C++ coro... by mgaunard on Wednesday March 25, 2026 @09:00AM (#47516779)
You can embed the state in your lambda context, it really isn't as difficult as what people claim.

The author just chose to write it as a state machine, but you don't have to. Write it in whatever style helps you reach correctness.

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Re:Looking at Unity made me understand the point of C++ coro... by Sharlin on Wednesday March 25, 2026 @09:13AM (#47516922)
You still need the state and the dispatcher, even if the former is a little more hidden in the implicit closure type.
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