Question on layer/peeling

Brian Goetz brian.goetz at
Tue Jan 6 02:48:02 UTC 2015

> That was my expectation.  I toying with a specialised HashMap to a feel
> for how specialisation will work.  I'm assuming that the layer parts
> aren't implemented yet - I couldn't find anything in a cursory browse of
> the commits.  Is there something I could do in the meantime as a hack
> (e.g. instanceof check and downcast to Object[])?

Thanks for this.  This is the kind of useful experiment that we are 
happy to see!

The layer part is indeed not yet implemented.  But even a catalogue of 
where the code can't be made value-clean would be a useful contribution. 
  We know that the Collections implementation is full of stuff that will 
be hard to any-fy without help from layering or other tools, but don't 
yet have a complete catalog.

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