Re: Different Dictionaries
Re: Different Dictionaries
- Subject: Re: Different Dictionaries
- From: Lorenzo <email@hidden>
- Date: Wed, 14 Jul 2004 22:31:33 +0200
Hi,
thanks for your prompt reply. But I think you lost a detail in my code.
I save an original dict to a file, then I immediately load that file in a
new dict and compare this new dict with the original dict, and they are
different! So that's strange. And even more strange, if I compare the string
descriptions of the two dicts, they are equal!
NSString *memString = [memDict description];
NSString *readString = [readDict description];
BOOL areEqual = [memString isEqualToString:readString];
Any idea?
Best Regards
--
Lorenzo
email: email@hidden
>
From: j o a r <email@hidden>
>
Date: Wed, 14 Jul 2004 19:07:52 +0200
>
To: Lorenzo <email@hidden>
>
Cc: email@hidden
>
Subject: Re: Different Dictionaries
>
>
Perform the equality test as stated in the documentation yourself, and
>
see where it fails:
>
>
==============================================================
>
Two dictionaries have equal contents if they each hold the same number
>
of entries and, for a given key, the corresponding value objects in
>
each dictionary satisfy the isEqual: test.
>
==============================================================
>
>
j o a r
>
>
On 2004-07-14, at 18.27, Lorenzo wrote:
>
>
> I have some problem with the method isEqualToDictionary. It returns
>
> that 2
>
> dictionaries are different while indeed they should be equal.
>
> I have one only dictionary called memDict.
>
>
>
> [memDict writeToFile:path atomically:YES];
>
> readDict = [NSDictionary dictionaryWithContentsOfFile:path];
>
>
>
> if([memDict isEqualToDictionary:readDict]){
>
> NSLog(@"Dictionaries are Equal");
>
> }
>
> else NSLog(@"Dictionaries are NOT Equal");
>
>
>
>
>
> And I got always the log "Dictionaries are NOT Equal".
>
> It seems that once saved to a file, the readDict dictionary written to
>
> the
>
> disk becames different. No matter if I use NSDictionary or
>
> NSMutableDictionary.
>
> So, how can I compare if the saved readDict is Equal to the memDict I
>
> have
>
> in memory? I need this in order to tell the user to save the changes.
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