Breaking Retain Cycles in Objective-C ARC with __weak and __strong
How to break strong reference cycles in Objective-C blocks using the __weak-strong pattern to prevent memory leaks under ARC.
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Enable ARC for a Single Objective‑C File in a Mixed‑Mode Xcode Project
Learn how to enable ARC for a single Objective‑C file in a mixed‑mode Xcode project, verify the compiler inserts retain/release calls, and revert the change if needed.
xcodeWhat causes latency spikes in Objective‑C apps under concurrent NSOperation/GCD workloads?
Goal Determine which underlying mechanism—QoS class promotion, maxConcurrentOperationCount limits, or thread‑local storage contention—primarily produces latency spikes when many NSOperation or GCD tasks run concurrently on iOS/macOS. Constraints include version‑specific behavior (e.g., iOS 15 vs iOS 16), undocumented interactions between NSOperation’s start