junioriOS
What is ARC in iOS?
Updated May 6, 2026
Short answer
ARC automatically manages memory by tracking references.
Deep explanation
ARC increases/decreases retain counts. When count hits zero, memory is freed.
Real-world example
Prevents manual memory management in apps.
Common mistakes
- Creating retain cycles unintentionally.
Follow-up questions
- What is a retain cycle?
- How do weak references help?