QQF/U: Coins, Coin Purses, and Banks

This is a follow up to my investigation into Julia's helpful, but slightly idiosyncratic, ways of condensing down tuples.

Having evocative language for things is helpful. So I'm going to introduce the terms I've used since writing that post mentally to describe nested empty tuples and the ways they get condensed down.

When Julia does the syntactic-sugar thing where ((())) == (()) == (), we call that robbed. So:

I'll leave it to your imaginations to generalize these further. 😉