Comment by AlotOfReading
20 hours ago
C++ offers lots of compelling things for embedded use cases, like enum classes (finally fixed in C23), constexpr, std::optional, namespaces, and atomics/generics that are much smaller dumpster fires.
There's an effort to extract the good parts and make it work for embedded use cases or even bring them into C. Khalil Estelle on WG21 has been working on an experimental, deterministic runtime for exception handling, to give one example. Constexpr is an example of the latter that's now showing up in C23.
I don't disagree, but these are in the ~2% convenience at most. With the huge baggage of including C++ in a project. The cost of learning C++ easily outweighs all those benefits. If you happen to have a proficient C++ team (that actually know embedded), go for it!
Speaking more broadly than just the std implementation, but result types like optional shouldn't be a 2% convenience, they should be used in most function calls that return errors. Rust is the obvious example here.
If you argue for Rust I'm all for it, arguably much less of a learning curve than C++ too.
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