Re: NSDictionary.isEmpty
Re: NSDictionary.isEmpty
- Subject: Re: NSDictionary.isEmpty
- From: Chuck Hill <email@hidden>
- Date: Thu, 16 Sep 2010 10:03:10 -0700
The only way I can see that being possible is with pDic being mutable and concurrently accessed in more than one thread. For the code as below it should never happen.
Chuck
On Sep 16, 2010, at 7:34 AM, ISHIMOTO Ken wrote:
> Hi all, was a nice WOWODC, and really nice Job done Pascal.
>
>
>
> I have a small Problem about NSDictionary.
>
> NSArray<Movie> movies= Movie.fetchAllMovies(defaultEditingContext());
> EOEnterpriseObject eo = movies.objectAtIndex(0);
> NSDictionary pDic = EOUtilities.primaryKeyForObject(defaultEditingContext(), eo);
> System.err.println("1:" + pDic); -->1:{movieID = 102; }
> System.err.println("isEmpty:" + pDic.isEmpty()); -->isEmpty:true
> System.err.println("count:" + pDic.count()); -->count:1
>
>
> Hadn't isEmpty not to be false ?
>
> Also looking into isEmpty
>
> public int count() {
> return _count;
> }
>
> public boolean isEmpty() {
> System.err.println("_count : " + _count); -->_count : 0
> System.err.println("count() : " + count()); -->count : 1
>
> return _count <= 0;
> }
>
>
> Why is the result of _count and count() different?
>
> Any ideas what's going wrong?
>
>
>
>
>
>
> Thank you
>
> --------------------------------------------------------
> K's ROOM (ISHIMOTO Ken)
> --------------------------------------------------------
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--
Chuck Hill Senior Consultant / VP Development
Practical WebObjects - for developers who want to increase their overall knowledge of WebObjects or who are trying to solve specific problems.
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