Limitation with classes derived from generic classes in swift

Question

I\'m trying to derive my class from generic class:

class foo {}
class bar : foo {}

But this code fails to compile with

Answer 1

Ssreg,

Unfortunately this is official:

You can subclass a generic class, but the subclass must also be a generic class.

Let us hope Apple fixes this in a future version.

Meanwhile, let us see this as an opportunity to exploit aggregation instead of subclassing.

NOTE:

As a poor man's version of a solution, one could use typealias:

class foo {}
class bar : foo {}
typealias Bar = bar

This way, the rest of the code can be written just as if Apple already fixed the matter.