Coroutines are lightweight and trivial to synchronize. They are perfect for small bits of incremental computation, like iterators and tokenizers. - Coroutines in C (2000) / HN

• C++ Coroutines Do Not Spark Joy
• Writing custom C++20 coroutine systems
• The downsides of C++ Coroutines
• My tutorial and take on C++20 coroutines
• C++20 Coroutines: sketching a minimal async framework
• Yet Another C++ Coroutine Tutorial

see also

• Coros - a header-only C++23 library designed for task-based parallelism, that utilizes coroutines and the new expected type.