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

Question

What does this line of code mean?

label.frame = (inPseudoEditMode) ? kLabelIndentedRect : kLabelRect;

The ? and :

Answer 1

As everyone referred that, It is a way of representing conditional operator

if (condition){ 
    true 
} 
else {
    false
}

using ternary operator (condition)? true:false To add additional information, In swift we have new way of representing it using ??.

let imageObject: UIImage = (UIImage(named: "ImageName")) ?? (initialOfUsername.capitalizedString).imageFromString

Which is similar to

int a = 6, c= 5;
if (a > c) 
{ 
 a is greater
} else {
 c is greater
}

is equivalent to

if (a>c)?a:c ==> Is equal to if (a>c)?:c

instead of ?: we can use ?? is swift.