Iin objc s it ok to set nil to a property of a nil object
95453
Sending a message to nil in Objective-C
88213
How to get the key for a given object from an NSMutableDictionary?
46448
What is self in ObjC? When should i use it?
82956
Why shouldn't I use Objective C 2.0 accessors in init/dealloc?
129358
Property vs Instance Variable
58238
What's the purpose of an ivar when a property exists?
158158
Use automatically implemented property or implement the property by ourself
54160
Sending nil to CGPoint type parameter
139714
Calling closure assigned to object property directly
124644
Does JavaScript guarantee object property order?
38000
Objective-C: alloc of object within init of another object (memory management)
14753
How to avoid NoMethodError for nil elements when accessing nested hashes?
96790
Accessing members in your own class: use (auto)properties or not?
122578
__NSArrayM insertObject:atIndex:]; object cannot be nil
46477
How to understand nil vs. empty vs. blank in Ruby
133619
In Objective-C why should I check if self = [super init] is not nil?
15118
Objective-C. Property for C array