Wildemar Wildenburger wrote: > Steve Holden wrote: > >>> I think SQL views are the direct analog. >>> >> I don't think they are. If you add a non-conforming row to a SQL view >> it doesn't appear int he view. If you modify a row in an updateable >> view so it no longer confirms with the view's conditions it disappears >> from the view. > > Me and my wording again: I typed 'direct analog' but meant 'somewhat > analog'. > >> Also you don't say whether changes to l are supposed to be reflected >> in f in the same way that changes to f are reflected in l. > > Right. Yes, the synchronicity (a word?) is meant to be in both directions. > >> It might be better if you were to explain your use case: what is this >> beast supposed to be for? > > I have a database of interconnected objects. Each object has a list > tuples; these tuples hold references to other objects and details about > the type of connection. > The 'views' I am imagining are sub-lists of this one list, based on the > connection types. Order is important here, that's why I'm not using sets. > BTW: I have gone the way of nested lists before and found it too rigid > and complicated to use. > > >>> A bit clearer now? >>> >> Hardly at all. Frankly it doesn't seem as though you really know what >> the specifications are yourself, so you can hardly expect us to divine >> them by use of our psychic powers. Besides which, psychic powers cost >> extra ;-) > > Right again. I'm not sure what I want yet as I'm still exploring ideas. > If something /like/ the above had existed (which by now I'm gathering is > not the case) I'd just adapted my ideas to the specs given. > > >> So give us that use case so we get a bit more insight into why you >> even see the need for such a thing and how you want it ti behave. Or >> is all this just theoretical? > > No no, its very much real. Just not as fleshed out as it might be --- > I'm sort of an explorative coder; I usually don't know how something is > going to work until it works. > That's all very well, but you might want to Google for "YAGNI". You still haven't given us mcuh of a clue about the real need.
> Thx for the effort :)Happy to (tray to) help. regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC/Ltd http://www.holdenweb.com Skype: holdenweb http://holdenweb.blogspot.com Recent Ramblings http://del.icio.us/steve.holden -- http://mail.python.org/mailman/listinfo/python-list
