in reply to Re^3: Unique key identifer?
in thread Unique key identifer?
I would think that a HoH does not bring any algorithmic advantage…
Its advantage is that it's more space-efficient. Each unique first-level key (fruit names in lecb's example) is always stored exactly once rather than sometimes stored twice.
Whether or not space efficiency is the advantage lecb is optimizing for, I can't say.
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