What's the meaning of prefix "_" in parameters in Objective-C
98830
Synthesized property and variable with underscore prefix: what does this mean?
62108
Objective-C variable dynamic naming/referencing at runtime
84808
Objective-C dot notation with class methods?
155983
What do the plus and minus signs mean in Objective-C next to a method?
64820
No named parameters in Ruby?
102080
What's the meaning of * and & when applied to variable names?
137536
Dot (".") operator and arrow ("->") operator use in C vs. Objective-C
89546
Where is the `--` (double dash) argument documented?
38906
What is the "-->" operator in C/C++?
71388
Use of * in Objective C Syntax
132590
What is the meaning of single and double underscore before an object name?
120556
What does `` mean in Python?
38162
What's the use/meaning of the @ character in variable names in C#?
66577
How to create variable argument methods in Objective-C
148908
Description of NSDictionary - why are some key names with quotes?
130397
What does the single ampersand after the parameter list of a member function declaration mean?
113944
How do I lookup a string constant at runtime in Objective-C?