Sometimes I spend more than an hour trying to figure out what is the simplest/cleanest/nicest way to write a 5-line function, that’s used only once or twice, isn’t time nor memory sensitive, and that no one else will use…

other times I don’t, but I should…

“I really should use data structure X even though Y is built-in and would work fine for this task.” Four hours later a poor implementation of X is written.