>> On 23 Jan 2017, at 19:56, Slava Pestov <spes...@apple.com> wrote:
>>
>>> class B: A {
>>> var item: String { // subclass specialises 'item' by "overriding" the
>>> protocol extension implementation
>>
>> This is the problem. You’re not overriding the protocol extension version,
>> you’re just shadowing it for the purposes of compile-time name lookup. Note
>> that if you add the ‘override’ keyword here, the compiler complains because
>> there’s nothing in the base class to override.
Yes, that's why I wrote overriding in quotes and also why I tried to use the
word specialise in place of override. My beef is not really here; this really
was just a preamble. My issue is with the fact that adding the declaration to
the protocol doesn't solve the problem despite the fact that the property is
then supposed to be dynamically dispatched but isn't.
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