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iOS Objective-C Basics (Retired) Advanced Objective-C Dynamic Typing

Muhmammad Zaki
Muhmammad Zaki
864 Points

how to do this question?

I didn't understand this question.Help

Declare a variable named thing of type id and initialize it to nil.

object.mm
NSArray *thing ['thing' id:nil];

3 Answers

I'm not sure why you're using an NSArray here. The question doesn't mention any need for an array. The solution is as simple as it sounds.

id thing = nil;
Holger Liesegang
Holger Liesegang
50,595 Points

Hi Muhmammad Zaki !

You declare a variable named "thing" of type 'id' and initialize it to 'nil' like so:

id thing = nil;

...and notice that there is no asterisk in this declaration, as id implies the asterisk.

You also might find you don't call methods, you send messages interesting if you are into more details :)

This was not in the video. Why no "asterisk"? *? Thanks, Gane