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bors-servo 4af890beff Auto merge of #99 - jcjones:master, r=pcwalton

Add CFSetApplyFunction and CFSetGetCount

I'm needing these CFSet functions for some USB HID interactions with IOKit, so here's the external references.

They are defined in CoreFoundation:

- [CFSetApplyFunction](https://developer.apple.com/reference/corefoundation/1520450-cfsetapplyfunction?language=objc) and
- [CFSetGetCount](https://developer.apple.com/reference/corefoundation/1520419-cfsetgetcount?language=objc)

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2017-04-02 13:57:10 -05:00