Created
March 4, 2020 17:09
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| let queue = OperationQueue() | |
| queue.maxConcurrentOperationCount = 2 | |
| let operation1 = BlockOperation(block: { | |
| let a = 5+1000 | |
| print(a) | |
| }) | |
| operation1.qualityOfService = .userInitiated | |
| let operation2 = BlockOperation(block: { | |
| let b = 5+2000 | |
| print(b) | |
| }) | |
| operation1.completionBlock = { | |
| } | |
| operation2.completionBlock = { | |
| } | |
| operation2.addDependency(operation1) | |
| queue.addOperation(operation1) | |
| queue.addOperation(operation2) |
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