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Error as NSError
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| import Foundation | |
| struct StructError: Error { | |
| var localizedDescription: String { "StructError.localizedDescription" } | |
| } | |
| class ClassError: Error { | |
| var localizedDescription: String { "ClassError.localizedDescription" } | |
| } | |
| enum EnumError: Error { | |
| case case1 | |
| case case2 | |
| case case3 | |
| var localizedDescription: String { "EnumError.localizedDescription" } | |
| } | |
| enum IntEnumError: String, Error { | |
| case case1 | |
| case case2 | |
| case case3 | |
| var localizedDescription: String { "IntEnumError.localizedDescription" } | |
| } | |
| enum StringEnumError: String, Error { | |
| case case1 | |
| case case2 | |
| case case3 | |
| var localizedDescription: String { "StringEnumError.localizedDescription" } | |
| } | |
| struct StructLocalizedError: LocalizedError { | |
| var errorDescription: String? { "StructLocalizedError.errorDescription" } | |
| var failureReason: String? { "StructLocalizedError.failureReason" } | |
| var recoverySuggestion: String? { "StructLocalizedError.recoverySuggestion" } | |
| var helpAnchor: String? { "StructLocalizedError.helpAnchor" } | |
| } | |
| struct StructRecoverableError: RecoverableError { | |
| var recoveryOptions: [String] { ["StructRecoverableError.recoveryOptions.1", "StructRecoverableError.recoveryOptions.2"] } | |
| func attemptRecovery(optionIndex recoveryOptionIndex: Int, resultHandler handler: @escaping (Bool) -> Void) { | |
| handler(true) | |
| } | |
| func attemptRecovery(optionIndex recoveryOptionIndex: Int) -> Bool { | |
| return true | |
| } | |
| } | |
| struct StructCustomNSError: CustomNSError { | |
| static var errorDomain: String { "StructCustomNSError.errorDomain" } | |
| var errorCode: Int { 123 } | |
| var errorUserInfo: [String : Any] { ["StructCustomNSError.UserInfo.Key1": 456, "StructCustomNSError.UserInfo.Key2": 789] } | |
| } | |
| func printErrorAsNSError(_ error: Error) { | |
| print("") | |
| print(String(describing: type(of: error))) | |
| let nsError = error as NSError | |
| print("domain ", nsError.domain) | |
| print("code ", nsError.code) | |
| print("userInfo ", nsError.userInfo) | |
| print("localizedDescription ", nsError.localizedDescription) | |
| print("localizedFailureReason ", nsError.localizedFailureReason ?? "(nil)") | |
| print("localizedRecoverySuggestion", nsError.localizedRecoverySuggestion ?? "(nil)") | |
| print("localizedRecoveryOptions ", nsError.localizedRecoveryOptions ?? "(nil)") | |
| print("recoveryAttempter ", nsError.recoveryAttempter ?? "(nil)") | |
| print("helpAnchor ", nsError.helpAnchor ?? "(nil)") | |
| } | |
| printErrorAsNSError(StructError()) | |
| printErrorAsNSError(ClassError()) | |
| printErrorAsNSError(EnumError.case3) | |
| printErrorAsNSError(StringEnumError.case3) | |
| printErrorAsNSError(IntEnumError.case3) | |
| printErrorAsNSError(StructLocalizedError()) | |
| printErrorAsNSError(StructRecoverableError()) | |
| printErrorAsNSError(StructCustomNSError()) |
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| StructError | |
| domain __lldb_expr_7.StructError | |
| code 1 | |
| userInfo [:] | |
| localizedDescription The operation couldn’t be completed. (__lldb_expr_7.StructError error 1.) | |
| localizedFailureReason (nil) | |
| localizedRecoverySuggestion (nil) | |
| localizedRecoveryOptions (nil) | |
| recoveryAttempter (nil) | |
| helpAnchor (nil) | |
| ClassError | |
| domain __lldb_expr_7.ClassError | |
| code 1 | |
| userInfo [:] | |
| localizedDescription The operation couldn’t be completed. (__lldb_expr_7.ClassError error 1.) | |
| localizedFailureReason (nil) | |
| localizedRecoverySuggestion (nil) | |
| localizedRecoveryOptions (nil) | |
| recoveryAttempter (nil) | |
| helpAnchor (nil) | |
| EnumError | |
| domain __lldb_expr_7.EnumError | |
| code 2 | |
| userInfo [:] | |
| localizedDescription The operation couldn’t be completed. (__lldb_expr_7.EnumError error 2.) | |
| localizedFailureReason (nil) | |
| localizedRecoverySuggestion (nil) | |
| localizedRecoveryOptions (nil) | |
| recoveryAttempter (nil) | |
| helpAnchor (nil) | |
| StringEnumError | |
| domain __lldb_expr_7.StringEnumError | |
| code 2 | |
| userInfo [:] | |
| localizedDescription The operation couldn’t be completed. (__lldb_expr_7.StringEnumError error 2.) | |
| localizedFailureReason (nil) | |
| localizedRecoverySuggestion (nil) | |
| localizedRecoveryOptions (nil) | |
| recoveryAttempter (nil) | |
| helpAnchor (nil) | |
| IntEnumError | |
| domain __lldb_expr_7.IntEnumError | |
| code 2 | |
| userInfo [:] | |
| localizedDescription The operation couldn’t be completed. (__lldb_expr_7.IntEnumError error 2.) | |
| localizedFailureReason (nil) | |
| localizedRecoverySuggestion (nil) | |
| localizedRecoveryOptions (nil) | |
| recoveryAttempter (nil) | |
| helpAnchor (nil) | |
| StructLocalizedError | |
| domain __lldb_expr_7.StructLocalizedError | |
| code 1 | |
| userInfo [:] | |
| localizedDescription StructLocalizedError.errorDescription | |
| localizedFailureReason StructLocalizedError.failureReason | |
| localizedRecoverySuggestion StructLocalizedError.recoverySuggestion | |
| localizedRecoveryOptions (nil) | |
| recoveryAttempter (nil) | |
| helpAnchor StructLocalizedError.helpAnchor | |
| StructRecoverableError | |
| domain __lldb_expr_7.StructRecoverableError | |
| code 1 | |
| userInfo [:] | |
| localizedDescription The operation couldn’t be completed. (__lldb_expr_7.StructRecoverableError error 1.) | |
| localizedFailureReason (nil) | |
| localizedRecoverySuggestion (nil) | |
| localizedRecoveryOptions ["StructRecoverableError.recoveryOptions.1", "StructRecoverableError.recoveryOptions.2"] | |
| recoveryAttempter Foundation.__NSErrorRecoveryAttempter | |
| helpAnchor (nil) | |
| StructCustomNSError | |
| domain StructCustomNSError.errorDomain | |
| code 123 | |
| userInfo ["StructCustomNSError.UserInfo.Key2": 789, "StructCustomNSError.UserInfo.Key1": 456] | |
| localizedDescription The operation couldn’t be completed. (StructCustomNSError.errorDomain error 123.) | |
| localizedFailureReason (nil) | |
| localizedRecoverySuggestion (nil) | |
| localizedRecoveryOptions (nil) | |
| recoveryAttempter (nil) | |
| helpAnchor (nil) |
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