Brendan Eich wrote:
But from the start I had null for Java's object reference types, meaning "no object"; and undefined as the bottom of the semiattice,
"semilattice"
meaning "no value". Java didn't have a way to express primitive | reference unions, rather had boxing (has this changed?).
The alternative would have been to make everything an object and null the bottom. Would have been better but I was in a tearing hurry, and using unboxed primitives was easier, and "made it look like Java" -- which has primitives with boxing wrappers. So I do blame myself, but I also blame Java :-|.
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