The -objectForKey: and -setobject:forKey: methods exist in
NSUserDefaults and NSDictionary with two different type signatures.
For NSDictionary the key is of type 'id' but for NSUserDefaults it is
of type 'NSString*'
This can cause a lot of irritating compiler warnings when using these
methods, so I was wondering if we should standardise on the 'id'
type, and just have NSUserDefaults perform a runtime check (or even
use [key description] to be sure that a key is a string).
That would mean that the formally declared API for NSUserDefaults
would differ slightly from the MacOS-X version, but it should not
cause any problems that I can see.
What do people think?
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