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When i try to display the value of a Dictionary value:
NSLog(@"%@",[self.user valueForKeyPath:@"age"]);
The first time, i got (null), the second time i got <null>
What differences does exist between the two result? Thanx in advance.
When
NSLogoutputs(null), it means that it was literally passed in0x0, orNULL.When it outputs
<null>, it means that it was passed in[NSNull null], instead.NSNull‘s are commonly used in arrays & other collections that cannot storenilby default. Thus, a special object is used instead.