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- Item forwarded by A33 to A34
-
- Item 5454027 14-Feb-90 17:11PST
-
- From: ALGER Alger, Jeff,VCA
-
- To: D4280 IDS, Robert Pappas,AST
-
- cc: MACAPP.TECH$ MacApp Technical
-
- Sub: Re: Data Dilemma
-
- Bob,
-
- It is generally considered good form to separate views from data: multiple
- views into the same data work best if the data is maintained separately.
-
- Most MacApp applications choose to store their data in a subclass of TDocument
- or, if not, to have a TDocument be the "owner" of data referenced by it. Each
- window knows who its TDocument is, so reference to the data is always
- available. TDocument is not ideally structured for complex data which is not
- stored in files (see my article in September '89 Frameworks), but it is still
- the practitioners' choice for maintaining data.
-
- If you can, pick up the conference notes when they become available. In my
- session on Monday, I dealt at great length with this issue of separation of
- views, data, and event handling: why, when, and how.
-
- Regards,
- Jeff Alger
- KPMG Peat Marwick
-
-