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

Posted by Zhuhua MO
Zhuhua MO
1,650 Points

Declare a variable named thing of type id and initialize it to nil. I can't find my way out, can someone help? Thanks.

I type:

id thing = @"nil";

It runs well in my Xcode, but the challenge keeps telling me to declare the variable 'thing' and set it to 'nil'.

2 Answers

Cody Te Awa
Cody Te Awa
8,820 Points
Cody Te Awa
Cody Te Awa
8,820 Points

I think nil is essentially nothing, therefore 'thing' should have no value, however you're code assigns 'thing' to a string that represents the literal 'nil'. If you were to print nil as you have it represented it would print a string literal of the word nil, however if you trying printing nil how it should be, it should return (null) meaning Nothing exists.

  • Hope that helps
Zhuhua MO
Zhuhua MO
1,650 Points
Zhuhua MO
Zhuhua MO
1,650 Points

Hi Cody, Thank you for replying. I finally found my way out after trying almost 10 different code. For those who come across the same problem, the answer is:

id thing = nil;

Thanks again Cody. :)