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Python has operator overloading, though, so a flat rule that comparisons involving values of different types must always be a type error would actually reduce t
by ubernostrum 8y ago
Python has operator overloading, though, so a flat rule that comparisons involving values of different types must always be a type error would actually reduce the power of the language. Granted, there aren't a ton of use cases where it's important to be able to do this, but it is useful on occasion.
- deleted 8y ago[deleted]
- uryga 8y agoYou're right – I guess I got too hung up on the types. What I meant to say is that I prefer to distinguish "`a` is not equal to `b`" and "equality between `a` and `b` is undefined"; the typing aspect is kind of orthogonal and muddles the discussion. (I guess I ended up conflating equality and equivalence[1], but in my defense, most languages seem to do that too; and the presence of the `is` operator in Python mixes things up even more) [1] https://en.m.wikipedia.org/wiki/Equality_(mathematics)#Relation_with_equivalence_and_isomorphism https://en.m.wikipedia.org/wiki/Equality_(mathematics)#Relat...