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Message Passing - The Heart of Objective-C
Objective-CRuntimeFundamentals
Unlike C++ virtual methods, Objective-C uses dynamic message passing. Understanding this mechanism unlocks the language's full power.
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- 02
Understanding Retain Cycles in Objective-C
Objective-CMemoryARCRetain cycles are the most common memory leak in Objective-C. Learn how they form, how to detect them, and patterns that prevent them.
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Namespacing in Objective-C - The Prefix Problem
Objective-CBest-PracticesArchitectureObjective-C lacks namespaces, so the community invented conventions. Here's how prefixes and other patterns help avoid collisions in a flat symbol space.
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The 10 Longest Symbol Names in Apple's Frameworks
Objective-CHumorApple-FrameworksObjective-C is famous for verbose naming. Let's celebrate (or mourn) the longest method and class names hiding in Apple's standard libraries.
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Why Objective-C Has try-catch But Nobody Uses It
Objective-CError-HandlingBest-PracticesObjective-C supports exception handling with @try/@catch, but the community settled on NSError pointers instead. Here's why.
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Ways to Shoot Yourself in the Foot with Method Swizzling
Objective-CRuntimeDebuggingSwizzling is powerful but dangerous. Here are the common pitfalls and how to avoid turning your clever hack into a debugging nightmare.
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The Power of Method Swizzling in Objective-C
Objective-CRuntimeAdvancedMethod swizzling lets you replace method implementations at runtime. Here's how it works and when this powerful technique shines.
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Class Clusters in Objective-C - The Pattern Behind Foundation
Objective-CDesign-PatternsFoundationUnderstand the class cluster pattern that makes NSString, NSArray, and NSDictionary work, and learn how to implement your own.
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NSTaggedPointerString - The Hidden Optimization You've Never Heard Of
Objective-CMemoryPerformanceDiscover how the Objective-C runtime secretly stores small strings directly in pointer values, eliminating heap allocations entirely.
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Barrier Queues in GCD - Thread-Safe Collections Without Locks
Objective-CConcurrencyGCDLearn how dispatch barrier queues provide elegant reader-writer synchronization in Objective-C without explicit locks or semaphores.
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