This is also, imo, a terrible example. I've almost never seen a serious application of 2D arrays, unless they were weirdly sparse, that actually used the 2D ar

This is also, imo, a terrible example. I've almost never seen a serious application of 2D arrays, unless they were weirdly sparse, that actually used the 2D array notation... Almost always, it's flattened into a memory-efficient representation as a 1D array, with a lookup expression to convert x, y coordinates into an index.