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Objective C MCQs

The proper typedef syntax for an Objective-C block that takes an NSArray and returns an NSString is

typedef NSArray *(^aBlock)(NSString *);

typedef aBlock^ = (NSString *)(NSArray *);

typedef NSString *(^aBlock)(NSArray *);

typedef void(^aBlock)(void);

Answer

Correct Answer: typedef NSString *(^aBlock)(NSArray *);

Explanation:

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