What's really missing though is unions with destructuring `case`. Once you start coding in a language with proper unions, it's hard to go back. In python it m

What's really missing though is unions with destructuring `case`. Once you start coding in a language with proper unions, it's hard to go back. In python it might look something like this: DataType = union({ 'type1': ['field1', 'field2'], 'type2': ['field3'] }) DataType.type1(val1, val2) DataType.type2(val3) # pretend syntax case datum: DataType.type1(a, b): doSomethingWith(a, b) DataType.type2(c): doSomethingWith(c)