Yes I am proposing something like protocol Subscriptable that defines the subscript operation and indices and entries properties.
On Sunday, 17 April 2016, Brent Royal-Gordon <[email protected]> wrote: > > With the above definition I would suggest a name change to entries, > since a Dictionary's keys are not necessarily numbers, hence enumerate is > misleading. > > > > Nothing for Set since it isn't subscriptable. > > I think you're slightly confused. All Collections have an Index. > Dictionary's Index is not its Key; it is an opaque type which references an > entry in its internal table. Set also has an Index; again, it is an opaque > type which references an entry in its internal table. Your `enumerate()` > (or my `indexed()`) would return these opaque `Index`es on all of these > types. > > If you want Array to return `(Int, Element)`, Dictionary to return `(Key, > Value)`, and Set to not have the operation at all, you're describing > something ad-hoc and entirely disconnected from the Collection type. > > -- > Brent Royal-Gordon > Architechies > > -- -- Howard.
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