My $.02 is here:
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 ===
> 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
> == 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
> = Rejected =
> - Utilities should be called singletons.
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