It is the history of a prototype ending in the system :) Ben
On 20 Jan 2014, at 18:02, Nicolas Cellier <nicolas.cellier.aka.n...@gmail.com> wrote: > NewValueHolder? the name sounds like a Squeak strategy: keep backward > compatibility as long as possible. > > Since Pharo values cleanlyDesigned > backwardCompatible, I would expect > ValueHolder->LegacyValueHolder and NewValueHolder->ValueHolder. > > We had too many NewParagraph, etc... in the past, history does not > necessarily have to repeat itself ;) > > > 2014/1/20 Stéphane Ducasse <stephane.duca...@inria.fr> > I commented the code in a slice that apparently was not integrated. > But yes this is a good idea. > - to have more code review > - to revive the COTDC!!!! > > > > I had some questions about NewValueHolder and I figured, why not revive > > COTDC?! > > > > The current comment is: "A NewValueHolder is a new implementation of > > ValueHolder based on Announcements". Of course, ValueHolder doesn't have a > > class comment. Wikipedia claims a value holder is "a generic object that > > handles the lazy loading behavior, and appears in place of the object's data > > fields" [1]. So: > > - what is a NewValueHolder? > > - is the "Value Holder" part of the name accurate in light of [1]. Obviously > > repurposing a term people may already be familiar with is a bad idea. In > > fact the important part here seems not the holding of the value, but the > > notification of changes. It seems more like an event in FRP. How about > > ReactiveVariable or AnnouncingVariable, since it combines the storage of a > > variable with announcing of changes? I like Reactive a bit better because > > those familiar with FRP will get the idea that it's notifying dependents, > > Announcing maybe begs the question "announcing what?" > > - should it replace ValueHolder, which is used only by > > ExclusiveWeakMessageSend and WidgetExamples > > > > [1] http://en.wikipedia.org/wiki/Lazy_loading > > > > p.s. [OT] valueChanged: oldValue to: newValue seems fishy. It is only used > > in one place in the image in this weird way "pickedItemsHolder valueChanged: > > true to: item" > > > > > > > > ----- > > Cheers, > > Sean > > -- > > View this message in context: > > http://forum.world.st/COTDC-108-NewValueHolder-tp4738066.html > > Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com. > > > > >
