Lint map
Lint map

- ;
- ===
- Long lines
- Fix `!arr.length > 0`. This did the opposite of what it should have, becuase
  if `arr.length` is `0`, `!arr.length` is `true`. Since `true` is represented
    by `1`(ish), `true` is in fact `> 0`.

Singly/hallway,Singly/hallway