App developers deal with errors from UIKit and other Objective-C libraries. Find out how they work with Swift.
This is a companion discussion topic for the original entry at https://www.kodeco.com/1940818-advanced-swift-error-handling/lessons/5
This is a companion discussion topic for the original entry at https://www.kodeco.com/1940818-advanced-swift-error-handling/lessons/5
Not entirely sure when it has changed, but it looks like catching an error with associated value as an NSError no longer loses the associated value.
enum FancyError: Error {
case kazam(String)
}
do {
throw FancyError.kazam("Help")
}
catch (let error as NSError) {
dump(error)
}
Outputs:
- __lldb_expr_28.FancyError.kazam("Help") #0
- super: NSError
- super: NSObject
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