Taking Updates Seriously
نویسندگان
چکیده
We show how “taking updates seriously” leads from state-based lenses to update lenses and further; we witness a little hierarchy of types of lens that arises in a systematic way. Lenses of each type are characterized either as coalgebras of certain types of comonads or morphisms between certain types of comonads. In each case, a lens is simulation between two transition systems for suitable notions of transition system and simulation.
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