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

Rodrigo Chousal
Rodrigo Chousal
16,009 Points

How do you initialize an ID variable to 'nil'?

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

3 Answers

Holger Liesegang
Holger Liesegang
50,595 Points

Hi Rodrigo,

you would do that like id thing = nil;

Rodrigo Chousal
Rodrigo Chousal
16,009 Points

Why wouldn't you write id *thing = nil; ?

Rodrigo Chousal
Rodrigo Chousal
16,009 Points

What about this? Assign an NSNumber literal with a value of '4' to the variable 'thing'.