IntStream and collect

[Jose]

Paul, 

I'm interested on data structures that stores a great number of ints
(cordinates of polylines) in a efficient way.

They might include byte[], short[], int[] based structures similar to nio
buffers. 
Some of them store the delta with respect to the previous  entry, others
with respect a common origin.

Im also intereseted on Bitset based structures, assigning n bits for each
entry.

These structures already have a stream() method, and I would like they would
implement  "IntCollector" as well.