Re: beginner's question: having problems with saving/loading
Re: beginner's question: having problems with saving/loading
- Subject: Re: beginner's question: having problems with saving/loading
- From: Gabriel Roth <email@hidden>
- Date: Tue, 12 May 2009 17:48:15 -0400
Many thanks to Graham, Gunnar, and mmalc for your time. I will study
and learn from your comments.
Since Gunnar mentioned it: I'm currently working through the first
half of Hillegass's book. I assigned myself this exercise to clarify
encoding and archiving; it seems to have revealed other (large) gaps
in my understanding.
gr.
On Tue, May 12, 2009 at 4:10 PM, mmalc Crawford <email@hidden> wrote:
>
> On May 11, 2009, at 12:42 PM, Gabriel Roth wrote:
>
>
>> The app contains just one class (besides MyDocument), called
>> AppController. The code for AppController is pasted below, followed by
>> console output.
>>
> Apart from issues others have already identified:
>
> You almost certainly shouldn't be encoding/archiving this object.
> You're combining a model and a controller object.
>
> Given that you have a document class (which serves as a controller), there
> shouldn't be any need for an additional AppController class.
> If you want to save a string in a document-based application, then implement
> the relevant NSDocument methods (e.g. dataOfType:error:).
>
> You should review the Document-Based Applications Guide, in particular
> <http://developer.apple.com/documentation/Cocoa/Conceptual/Documents/Concepts/RolesOfDocObjects.html>.
> Review also
> <http://developer.apple.com/documentation/Cocoa/Conceptual/CocoaFundamentals/CocoaDesignPatterns/CocoaDesignPatterns.html#//apple_ref/doc/uid/TP40002974-CH6-SW1>.
>
> mmalc
>
>
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