> Andy Wingo <wingo@...> skribis:
>> But OK, the question here is, what if another thread is concurrently
>> mutating X and Y? If this were C++ or Java, the answer would be that
>> they can still fold, because access to a multithreaded mutable needs to
>> be synchronized. I think this is reasonable. What do you think?
> I agree.
I just reread what I replied, and it was probably hard to detect the
implicit "I too" between the lines of the diatribe.