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Gets the first object in an array or returns nil for empty array.
// NSArray+FirstObject.h
#import <Foundation/Foundation.h>
@interface NSArray (FirstObject)
- (id)firstObject;
// NSArray+FirstObject.m
#import "NSArray+FirstObject.h"
@implementation NSArray (FirstObject)
- (id)firstObject
return self.count > 0 ? self[ 0 ] : nil;

In iOS 7 NSArray have public property firstObject.

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