3 ms·

I don't think those are happening, but how about basic set arithmetic? The fact that you can't do difference / union / intersection using the standard library i

• pitaj 9y ago
  There's a proposal for that.
  • epmatsw 9y ago
    Two of them now. One to add Set-specific methods, and another to port the usual Array.prototype methods over to Set and Maps. Can't wait! https://github.com/tc39/set-methods https://github.com/tc39/set-methods https://github.com/tc39/collection-methods https://github.com/tc39/collection-methods