Dart has always had optional static types. With 2.0, those be come mandatory. If you are familiar with Swift, then dart would be Swift with a GC rather than ref

Dart has always had optional static types. With 2.0, those be come mandatory. If you are familiar with Swift, then dart would be Swift with a GC rather than ref counting and without tuples (or rather, the reverse would be true as dart is older than Swift).