C++ Feature Coroutines, Beginner Friendly
summary
Covers the concrete mechanics: new keywords co_await, co_yield, co_return map to promise_type hooks and a wrapper return type; every coroutine creates a coroutine frame on the heap (a dynamic allocation unless avoided); shows a chat example with listen/answer, implements no STL generator fallback (generator + iterator for range‑for), an interleave of two vectors, and a scheduler that stores handles in a std::list using coroutine_handle<void> to round‑robin tasks. Also demonstrates a byte‑stream parser using co_await per byte, details exception propagation and restrictions (no constexpr/constructor/destructor/main coroutines).
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chapters (10)
- 0:00Introduction and setup
- 3:54Functions vs coroutines
- 16:57First coroutine example
- 34:34Interleaving vectors
- 46:15Adding iterators
- 46:36Cooperative multitasking
- 55:12Parsing data streams
- 1:07:45Handling exceptions
- 1:13:03Limitations and restrictions
- 1:15:10Q&A and closing
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