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Operation example
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| class DownloadCommitsOperation: ConcurrentOperation, ProducesResult { | |
| var output: Result<[Commit], Error> = Result { throw ResultError.noResult } | |
| let api: GitHubAPI | |
| init(api: GitHubAPI) { | |
| self.api = api | |
| super.init() | |
| } | |
| override func execute() { | |
| let networkOperation = //api.operation(for:) | |
| let importOperation = //CoreDataBatchImportOperation<Commit>() | |
| let group = DispatchGroup() | |
| group.enter() | |
| networkOperation.passesResults(to: importOperation).enqueue(on: internalQueue) { result in | |
| self.output = result | |
| group.leave() | |
| } | |
| group.wait() | |
| finish() | |
| } | |
| } |
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