in the ViewController.m, what's the difference between self.username with _username
53595
Difference between self.ivar and ivar?
86451
Are usernames required to be unique?
153733
How do you give people prefixes for their usernames?
115596
In Objective-C on iOS, what is the (style) difference between "self.foo" and "foo" when using synthesized getters?
117603
My username instead of my Gravatar in the top bar
136282
What characters should I use or not use in usernames on Linux?
52623
Variable declaration difference in Objective-C
147940
What name does the auto-generated ivar take when I just declare a property in XCode 4.5 onwards?
41101
Difference between properties and variables in iOS header file?
61074
How to retrieve the user name from the user ID
22324
What's the difference between declaring a variable "id" and "NSObject *"?
56824
What is the difference between <%# and <%= in ASP.NET MVC?
65898
Difference between _property and self.property
8138
What is the intended purpose of having a "Real Name" field in user profiles?
101895
What is the difference between Scope_Identity(), Identity(), @@Identity, and Ident_Current()?
39668
Is there a difference between an "instance variable" and a "property" in Objective-c?
33459
What is the difference between adduser and useradd?