Updating Data Substacks
Dan Shafer
dan at danshafer.com
Fri Jul 12 01:48:00 EDT 2002
>Recently, Dan Shafer wrote:
>
>>> Good) Keep your data separate from the UI. This way you can update the UI
>>> independently of the data.
>>
>> Thanks for the fast reply, Scott.
>>
>> But this would require storing it in a text file and managing all the
>> data manipulation stuff or alternatively using a database, right? If
>> I have to do those things to keep data from being munged when I
>> upgrade the app, I might just as well use a conventional programming
>> environment! Transparency of data storage is crucial to stackware
>> applications.
>
>If I understand your correctly, the answer is no. Data can be stored in a
>stack, in fields, user props, whatever you want. Personally, I use mirrored
>controls in the UI stack and the data stack -- this makes it easy to keep
>track of where the data is going. To write/store the data, I open the data
>stack invisibly and write any data changes/updates in the UI stack to the
>data stack on closeField messages.
That sounds like an efficient way of doing things. that should make
it unnecessary to change the data stack unless I make some
fundamental change in data structures, which I don't anticipate.
Thanks. This feels like it might work, though it is less and less
like HyperCard!
>Regards,
>
>Scott Rossi
>Creative Director
>
>Tactile Media, Multimedia & Design
>Email: scott at tactilemedia.com
>Web: www.tactilemedia.com
>
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Dan Shafer
Technology Visionary - Technology Assessment - Documentation
"Looking at technology from every angle"
http://www.danshafer.com
831-392-1127 Voice - 831-401-2531 Fax
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