01
nil vs Nil vs NULL vs NSNull in Objective-C
Objective-CFundamentalsMemory
Objective-C has four ways to represent nothing. Understanding when to use each prevents subtle bugs and clarifies your code's intent.
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> Memory
// 3 articles available
- 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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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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