On Thursday, July 21, 2016 at 12:04:35 PM UTC+5:30, Steven D'Aprano wrote: > On Thursday 21 July 2016 15:28, Rustom Mody wrote: > > BTW APL whose main domain of application is scientific chooses to enshrine > > this —equality is ε-neighborhood checking not exact equality checking — into > > its builtin ‘==’ > > I have a lot of respect for Ken Iverson, and a lot of admiration for language > designers willing to experiment with alternate paradigms.
This choice has significant(!!) costs: Fuzzy equality is not transitive: One can get a = b ∧ b = c ∧ a ≠ c > > But keeping in mind that in APL, if you set ⎕ct to 0 you get an exact > comparison, can you find any quotes from Iverson saying that you should > *never* > perform exact equality comparisons? There you go with your strawmen! Remember it was you (and Chris) who expressed extreme positions: “Pernicious myth” “FUD” etc -- https://mail.python.org/mailman/listinfo/python-list
