Thank you, it's working beautifully Hernán :)
2010/7/12 Hernán Morales Durand <[email protected]> > Hi Joel, > > You may try the attached OrderedDictionary, I've been using it for some > time. > Cheers, > > Hernán > > 2010/7/12 Joel Turnbull <[email protected]>: > > > > Spent some time but was not quite able to get OrderedDictionary working. > > However I see the idea is for the Dictionary to hold an OrderedCollection > > that is synchronized with the Dictionary's array. > > > > I think that's enough for me to go on to implement my own for the limited > > dictionary protocol I need to support. > > > > I looked in the Seaside packages for subclasses of Dictionary, or classes > > named like Dictionary, but I didn't find anything. > > > > I got a little lost looking at BTree, I should probably take the time to > > look at that someday. > > > > Thanks guys. > > > > > > > > On Sun, Jul 11, 2010 at 11:45 AM, Levente Uzonyi <[email protected]> wrote: > >> > >> On Sun, 11 Jul 2010, Joel Turnbull wrote: > >> > >>> What is the group's recommendation for creating a sequential > Dictionary? > >>> i.e. A Dictionary who's associations are ordered. > >>> > >>> Is there any precedent for this? Or does it sound like I'm barking up > the > >>> wrong tree? > >>> > >>> In my model, I've subclassed Dictionary into QuantityDictionary to > store > >>> line items, where the key is the item and the value is the quantity of > >>> the > >>> item. It validates that the value is always a numeric, removes the > >>> association when the value goes below zero, and other stuff specific to > >>> my > >>> application. > >>> > >>> Now I'm finding it makes sense to be able to order these associations. > >>> Imagine a recipe ingredient list, where you add and edit quantities of > >>> ingredients, and you want to put the ingredients that you use earliest > in > >>> the recipe at the top of the ingredient list. > >>> > >>> Before I put any more work into it, I just wanted to make sure that a > >>> sequential dictionary makes sense, and get your ideas on how to > generally > >>> go > >>> about implementing that? > >> > >> A "sequential dictionary" can mean a lot of different things. There are > >> some implementations with different semantics available. See these for > >> example: > >> http://squeaksource.com/BTree.html > >> http://forum.world.st/OrderedDictionary-td277320.html > >> > >> If you just want to iterate over your dictionary once in the sorted > order, > >> then the best thing to do is to collect your data into an array, sort > the > >> array, then iterate over that sorted array. > >> > >> > >> Levente > >> > >>> > >>> Thanks. > >>> > >> > >> _______________________________________________ > >> Pharo-project mailing list > >> [email protected] > >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > > > > > _______________________________________________ > > Pharo-project mailing list > > [email protected] > > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > > > _______________________________________________ > Pharo-project mailing list > [email protected] > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >
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