Monday, July 24, 2017

Matching and Bridging NSErrors in Swift

Joshua Emmons:

You can find all the gory details in SE-0112, but the long and the short of it is, depending on the domain of a given NSError, Swift automatically bridges it to a struct describing that domain. In the case of NSURLErrorDomain, for example, Swift will bridge to a URLError[…]

You can also use the CustomNSError protocol to bridge in the other direction.

See also: CocoaError.

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