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by favorited
2696 days ago
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The main thread checker is a godsend. Enabling it + TSAN + Core Data concurrency assertions have reduced the threading bugs my team deals with to almost 0. Anywhere we're doing something specific, we make liberal use of `dispatchPrecondition(condition: .onQueue(mySerialQueue))` or `assert(Thread.isMainThread)`. Even in places where we are doing multithreaded UI rendering (mostly CATiledLayer), it's become a non-issue. It's a night-and-day difference compared to 5+ years ago. |
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