C++ class specifier alignas option via template

  alignas, c++

Can C++ template parameters be used to control specifiers on the class itself to minimize some code duplication?

For example: I have a class that I’d like to use both in a concurrent context (and container) with the alignas specifier, and also in a single-threaded context without the alignas specifier. The size of the class is small (20B) — less than a cache line. I do need to copy between the two classes. Right now I have duplicated code for the two definitions of the two classes which are the same, mostly, other than the said specifier. Can templates or otherwise allow a single definition, one with alignas and one without?

Source: Windows Questions C++