How to use C++ user defined modules in Arduino

Question

Does Arduino support C++ module import functionality i.e. what would it require to implement something like this in Arduino: import std;?

Answer 1

Modules are a C++20 feature. The configuration files (platform.txt) of the cores provided by Arduino all ask the compiler to use one of the standards gnu++11, gnu++14 or gnu++17. These are C++11, C++14 and C++17 with some GNU extensions.

You will not be able to use C++ modules with standard Arduino cores. You will use the traditional header files instead. Optionally, you may build "Arduino libraries" by following the corresponding specification.

• beebee: @Edgar Bonet Understood. Thank you for your comment. AOB: It appears someone gave my question a down vote. Could this have anything to do with my question itself or with the way it was framed? Feedback could help improve my future posts.
• beebee: BTW, as per libraries, what's your thoughts on using third party vector container libraries? I saw one of such libraries which the author claimed could function like (but slightly different from) native std::vector<T> library. However, from your personal experience, could this pose potential drawbacks? Thank you in advance.
• Edgar Bonet: @beebee: I have no experience with those. I tend to use statically allocated plain C arrays, in order to avoid memory issues with dynamically-allocated memory.
• beebee: Thank you so much. I appreciate your response