[swift-evolution] [Review] SE-0006 Apply API Guidelines to the Standard Library

[Brent Royal-Gordon]

> What is the rationale for moving `unsafeUnwrap` into Optional but not `unsafeAddressOf` into AnyObject?

For one thing, because AnyObject has no methods and the compiler prevents it from being extended. Of course, as far as I can tell that limitation is unprincipled.

-- 
Brent Royal-Gordon
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