if statment in objective-c

Can someone please help to explain the syntax of the following code for me? It meant to "return ? if _suit is nil, and return a corresponding string in an array if _suit is not nil.

- (NSString *)suit
{
  return _suit ? _suit : @"?";
}

Is it equivalent to the following code?

if (!_suit){
    return @"?";
 }else{
    return ?
 }