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

Michael Nees
Michael Nees
1,070 Points

Dynamic Typing

Got a bit stuck with this one...

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

NSArray *thing = @(@id, @"nil"];

What is wrong?

2 Answers

Jimmy Hsu
Jimmy Hsu
6,511 Points

I think you may be complicating it more than you need to.

From what I can see the question asking, it is simply a matter of declaring a simple variable.

id thing = nil;

The syntax format goes "type" "name" = "value";

Where you went wrong was in instead of declaring a variable with the type of id, you went further and created an NSArray instead that contained invalid values of an invalid object (the @id, closest thing I could image to being valid would be @"id" as a string) and a string of "nil".

Michael Nees
Michael Nees
1,070 Points

Many thanks Jimmy for your help! ...something we make life harder than it is...