I've tried using anki for non-vocabulary stuff. My impression is that to recall some fact, what I put in the card might not be what I care about recalling. e.g

I've tried using anki for non-vocabulary stuff. My impression is that to recall some fact, what I put in the card might not be what I care about recalling. e.g. for Set, wikipedia has "a set is an abstract data type that can store unique values, without any particular order". Whereas what I might care about is "a Set has items, and it's quick to check if the item is in the set". -- If I don't know what a Set is and haven't used it, it's a bit tough to come up with a description I'm going to care about. While vocab flashcards are straightforward, non-vocab flashcards need more maintenance.