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

Posted by Watson Chang
Watson Chang
Courses Plus Student 2,047 Points

type casting a generic type

the generic variable "thing" is currently nil. how do i typecast it into a NSNumber?

i tried "thing = [NSNumber:@4];"

but it does not work.. thanks.

1 Answer

Unsubscribed User
Unsubscribed User
6,125 Points
Unsubscribed User
Unsubscribed User
6,125 Points

Just use the following:

NSNumber *thing = @4;

In this case the "@" is equal to "[NSNumber numberWithInt:]". So you can use this form too:

NSNumber *thing = [NSNumber numberWithInt:4];