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What is difference between atomic and nonatomic property specifier?

Sunil Singh383821-Apr-2015
iphoneiphone ios 
Updated on 18-Sep-2020
Sunil Singh

Sunil Singh

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Sunil Singh

Sunil Singh

21-Apr-2015
Atomic means only one thread access the variable but nonatomic means multiple thread access the variable .Atomic is thread safe but nonatomic is thread unsafe.Atomic is fast in performance but nonatomic  is slow in performance.Atomic is default behavior but nonatomic is not default behavior . we need to add nonatomic keyword in property attribute. Nonatomic may result in unexpected behavior, when two different process (threads) access the same variable at the same time.

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