miniblog.

One interesting aspect of collecting coins in a platformer like mario: it makes the level stateful. You can see if you've been somewhere before based on whether there are coins present.

TIL that C++03 considered a file without a trailing newline to be undefined behaviour! https://stackoverflow.com/a/72377 This was fixed in C++11, but the problem was that #include was a textual operation that could produce invalid syntax if no newline was present.

Arbital is a really neat website design intended to help readers learn concepts. Unlike e.g. Wikipedia, it can present the same content at different levels of complexity and dynamically show you the prerequisites for learning a given topic! https://arbital.com/learn/Arbital_author_basics