Andy Matuschak
Sidney
@andy_matuschak I just discovered this myself. I'm using an enum to manage app defaults, and now I can…
AppDefault.Bounciness.intValue = 5
Interesting new Swift keyword I learned about today: "nonmutating." e.g. UnsafeMutablePointer's var memory: T { get nonmutating set }
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@Sidnicious Yikes. What does that mean? Have a gist? -
@Sidnicious Yes. :) That setter *is* mutating. This will break compilation semantics. - View other replies
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@andy_matuschak Hah! That's fair. I'd consider it nonmutating, though, because it doesn't change the instance itself, just global state. No? -
@Sidnicious Hm. I think you’re right, actually!
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@andy_matuschak I believe that acts as a whitelist such that an immutable UnsafeMutablePointer value can still have its memory mutated. -
@andy_matuschak@NatashaTheRobot wrote a small story about why/how to use nonmutating in#swiftlang :http://bit.ly/1SFFG3j
Andrew Richardson
Justin Spahr-Summers
kamidude
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