4 ms·

Yes, I like it! Only thing I don't understand is '0$state'.

• ahoge 11y ago
  That's string interpolation. That line writes either "00" or "01". It's essentially the same as `'0' + state`. 'x: $x, y: $y' is a lot easier to type than: 'x: ' + x + ', y: ' + y I actually had to triple check that line. Concatenation is very error-prone. I often mess it up. String interpolation is a fairly popular feature nowadays: https://en.wikipedia.org/wiki/String_interpolation https://en.wikipedia.org/wiki/String_interpolation