[Grace-core] [A Graceful Blog] Comment: "From Lancaster to Portland"
James Noble
kjx at ecs.vuw.ac.nz
Mon Sep 26 20:01:26 PDT 2011
> I think that we agree on this.
yes! I think so too! Well on the nil & None anyway...
> As Kim says, for any particular application, we may make a specific null object. For example, for trees, we will need an EmptyTree object. Again, as Kim says, we can give these objects useful operations, so EmptyTree can have a height.
yep - and that shouldn't conflict with a nil somewhere in a library a the medium or higher language level...
we'll still have to decide about brands. and other stuff.
J
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