Comment by JadeNB

> Portability is not hard. If you write standard C/C++ that does not depend on undefined behavior (like wild-ass pointer casts, etc.) you will be fine 99% of the time.

This is not my area of expertise, so I'm not the one to write the rebuttal, but it seems that "---- is not hard" is never anything more than an invitation to someone who fully understands ---- to explain why it is hard.

Succinctly, serving 99% of the use cases with no effort mainly seems to be a recipe for making sure that, when one hits those 1% problems, one has no idea how to deal with them. I suspect that portability is one of those things where it's easy to do a mediocre job but hard to do a good/robust job.