Re: NSNull and @""
Re: NSNull and @""
- Subject: Re: NSNull and @""
- From: "Colin Barrett" <email@hidden>
- Date: Fri, 10 Oct 2008 17:11:02 -0700
On Fri, Oct 10, 2008 at 3:20 PM, DKJ <email@hidden> wrote:
> I've made an NSDictionary where the values are strings. Is there a
> difference between setting a value as [NSNull null] and setting it as @""?
> (I've been using the former.)
It's up to you. Unlike other languages, Cocoa dictionaries are not
type homogenous (ObjC in general has a weak type system and its
objects are statically typed). It is up to the caller of objectForKey:
(which returns id) to check the type of the returned object and make
sure it is what you are expecting it to be.
-Colin
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