My $.02 is here: http://www.plope.com/Members/chrism/zca_thoughts_summary
Gary Poster wrote: > ...from my perspective. > > = Things vaguely approaching consensus = > > == General == > > There's a consensus that changes to the ZCA need to be backwards compatible. > The practical definition of that varies for different people. > > == Syntactic == > > === Tuple multi-adaptation === > > Example: > IFoo((bar, baz)) == z.c.getMultiAdapter((bar, baz), IFoo) > > - It has the most consensus of any proposed change so far. > > - It is concerning because it breaks backwards compatibility in two real > world use cases from the very small set of Zope users who actually watch > zope-dev. There is a workaround spelling at least, but it is ugly (i.e., > what was ``IFoo((bar, baz))`` will need to become ``IFoo(((bar, baz),))``). > > - It is easier to remember than ``z.c.getMultiAdapter((bar, baz), IFoo)`` (I > always have to look up the order of arguments for getMultiAdapter myself) but > not as easy to remember as ``IFoo(bar, baz)``. It introduces yet another > spelling of the same thing (e.g., ``IFoo(bar)`` is the same as > ``IFoo((bar,))``. > > == Utilities available from interfaces == > > As far as I can tell, no one is against this generally, and several people > are for it. Some people are against the syntax that has been proposed for > this that merges utilties and adapters (see "No consensus" section below). > An alternate syntax was proposed involving a ``utility`` callable. This made > the most sense when it was paired with an ``adapters`` (or ``factory`` or > ``new`` or ``instance`` or ``create``) callable, which contradicts the > consensus of the "tuple multi-adaptation" section above. > > > > = No consensus AFAICT = > > - Utilities and adapters should be merged. > > - We care significantly about new and casual users and perceive that the > current API does not serve them well. > > - Adapters are usually used as factories, and utilities are used as > instances, and it is valuable to present them that way. Related: the term > "adapter" buys us little and costs us more than nothing among new and casual > users. > > > > = Rejected = > > - Utilities should be called singletons. > > > _______________________________________________ > Zope-Dev maillist - Zope-Dev@zope.org > https://mail.zope.org/mailman/listinfo/zope-dev > ** No cross posts or HTML encoding! ** > (Related lists - > https://mail.zope.org/mailman/listinfo/zope-announce > https://mail.zope.org/mailman/listinfo/zope ) > _______________________________________________ Zope-Dev maillist - Zope-Dev@zope.org https://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - https://mail.zope.org/mailman/listinfo/zope-announce https://mail.zope.org/mailman/listinfo/zope )
