On Wed, Oct 3, 2012 at 4:07 PM, Mark S. Miller <erig...@google.com> wrote:
> I can't imagine actually getting consensus on making the current default > change from sparse to dense. We've rejected many breaking changes that were > less breaking than this would be. > > The subclass notion is interesting though. Reads dominate writes, and > frozen arrays can only be read anyway. Liskov substitutability on reads > suggests that dense arrays be a subclass of sparse -- it provides stronger > guarantees. Arranging the subclassing that way would also not be a breaking > change. > > In Sept we briefly discussed an Array subclass "thing" that was never named... IIRC there was some interest, but it was controversial. Rick
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