or-patterns (tweet)

[ggreif]

or-patterns let you collapse two (or more) case branches into one under certain circumstances.

The patterns are permitted to bind variables as long as the same variables are bound with identical types.

switch animal { // NOT ACTUAL ADVICE!
  case (#wolf or #bear(#brown)) run();
  case (#deer or #bear(#black)) freeze();
  case (#snake or #scorpion) applyAntivenom();
}