Sending this on to core-libs-dev to try to get a response ;-) Stephen
On 24 June 2013 16:14, Stephen Colebourne <scolebou...@joda.org> wrote: > One point lambdaification that I haven't seen mentioned is addition > static factory methods for the main collection interfaces. (Strictly, > this proposal is not point lambdaification as it does not involve > lambdas, but it is very much in the same area). > > I propose adding these static methods: > Collection.empty() > Collection.of(T...) > List.empty() > List.of(T...) > Set.empty() > Set.of(T...) > Map.empty() > Map.of(Entry...) > Map.Entry.of(K, V) > > Each of these methods would return immutable implementations. > There is a case for extending the methods to Iterator and other > collection types, however these are the most important. > These follow the designs of Stream static methods IIRC. > > This library change would remove much of the requirement for the > "collection literals" change discussed in Project Coin. > > Implementation would ideally be via new dedicated immutable classes, > however space could be saved by simply reusing the existing classes. > > Is this something we could fit in? (Is resourcing the problem, or the idea?) > > thanks > Stephen