Looks like we have some terminology confusion. I read mijamo's question as being about the theoretical ability to evaluate at compile time (the value is knowable) not whether the compiler does do it, and that's what I meant in my comment too.
If you say that 'pure' functions are not compile-time-evaluatable because they may be given parameters that are not known at compile time, then you must also say that const fns are not compile-time-evaluatable. I think it's also clear that we mean for const fns to count, so the assumption that the parameters are known at compile time was implicit in the question.
Under those two assumptions: are pure functions evaluatable (in theory) at compile-time (on values known at compile time)? As far as I can think, the answer is yes? In which case, I'm not entirely sure what the distinction between 'pure' and 'cosnt fn' is supposed to be except to separate out the part of 'pure' functions that can are evaluated in practice. Is there anything more to it?
