What do you think is missing from Swift?
An AnyFunction type would be great. Also reflection is incomplete and undocumented. Message passing - <a href="http://www.buckleyisms.com/home/2014/6/16/the-case-for-message-passing-in-swift.html" rel="nofollow">http://www.buckleyisms.com/home/2014/6/16/the-case-for-messa...</a>