What is nspersistentstore? Is it thread safe?
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What is libdispatch?
What are the skills required for ios developer?
How to hide images in ios?
How is the app delegate is declared by Xcode project templates?
What is array in ios?
What is the difference between weak and strong?
Define 'copy' keyword?
What is nsmanagedobjectmodel?
What is plist file and explain about it is usage in iOS operating system?
Explain layer objects?
What is 'private', 'protected' and 'public' ?
How to export your private key from your keychain in iphone development?