What does the question mark and the colon (?: ternary operator) mean in objective-c?

What does the question mark and the colon (?: ternary operator) mean in objective-c?

objective-c c syntax operators conditional-operator

objective-c

Block Declaration Syntax List

objective-c syntax objective-c-blocks

objective-c

What do the plus and minus signs mean in Objective-C next to a method?

objective-c syntax method-declaration

objective-c

How does an underscore in front of a variable in a cocoa objective-c class work?

objective-c cocoa-touch cocoa variables syntax

objective-c

#import using angle brackets < > and quote marks " "

objective-c syntax import packages

objective-c

Method Syntax in Objective-C

objective-c syntax methods

objective-c

Use-case of `oneway void` in Objective-C?

objective-c syntax keyword use-case

objective-c

Dot notation vs. message notation for declared properties

objective-c syntax coding-style

objective-c

Testing for nil in Objective-C -- if(x != nil) vs if(x)

objective-c syntax

objective-c

Which is the right one, nil or NULL, to mark "no Objective-C block"?

objective-c syntax objective-c-blocks

objective-c

For loop in Objective-C

objective-c syntax

objective-c

Caret in objective C

objective-c syntax

objective-c

Short IF ELSE syntax in objective C

objective-c ios syntax if-statement

objective-c

What other programming languages have a Smalltalk-like message-passing syntax?

objective-c syntax language-design smalltalk message-passing

objective-c

First parameter name in objective c?

objective-c syntax parameters message

objective-c