OC -- (9) -- Memory Management: memory management method, reference counting mechanism, affects counting methods, dealloc methods, basic memory management principles, and master the implementation of copy

IOS app? Crash occurs in the program. More than 90% of the causes are memory problems. What if one has dozens of users? To hundreds of classes? Cheng Li, it is extremely difficult to find out memory problems. Learn about memory usage? Problems can help us reduce the chance of errors. Memory problems are reflected in two aspects: memory overflow and abnormal wild pointers. 1. Abnormal memory management of wild pointers reference counting methods that affect reference counting include + alloc-retain-copy-release-autorelease

OC -- (9) -- Memory Management: memory management method, reference counting mechanism, affects counting methods, dealloc methods, basic memory management principles, and master the implementation of copy