Usually when you think you can find some new treasures in there fast. I use an API cheat sheet all the time. Also when the topic at hand isn't very google-able

Usually when you think you can find some new treasures in there fast. I use an API cheat sheet all the time. Also when the topic at hand isn't very google-able and the cheat sheet is the next most efficient choice. But a lot of the time cheat sheets get useless fast.