Hi, What is the recommended way for a library to customize `equal?` and `equal?` -based hashing for new datatypes it defines?
I know from [1] that `equal?` can be customized using GOOPS; however, some projects do not use GOOPS (e.g. [2]), so it would seem more friendly for a generic library to avoid it. Also, it is not clear if the same mechanism is even an option for customizing `equal-hash` to match `equal?`. I'm looking for something like Racket's `gen:equal+hash` [3] or Chez Scheme's `record-equal-procedure` and `record-hash-procedure` [4]. This came up while I was working on a portable version of the immutable hash-table implementations from Racket-on-Chez. -Philip [1]: https://www.gnu.org/software/guile/manual/html_node/GOOPS-Object-Miscellany.html [2]: https://lists.gnu.org/archive/html/info-gnu/2023-05/msg00005.html [3]: https://docs.racket-lang.org/reference/Equality.html#%28part._.Implementing_.Equality_for_.Custom_.Types%29 [4]: https://cisco.github.io/ChezScheme/csug9.5/objects.html#./objects:h14
signature.asc
Description: This is a digitally signed message part.
