How can we achieve singleton pattern in iOS?


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What are the viewcontroller lifecycle in ios?

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Difference between release and autorelease ?

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what are all instruments available in Xcode?

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Which are the app’s state transitions when it is launched?

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What is the 'interface' and 'implementation'?

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What major changes released in ios7, ios8, ios9+?

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If you run an application on device , which has location services.Which location it will show first ?

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