I don't see a general solution for idiomatic Clojure data (so, often not records) other than making the hashes of small integers a spread-out, nonlinear function of them.
On Fri, Oct 25, 2013 at 2:11 PM, Mark Engelberg <mark.engelb...@gmail.com>wrote: > On Fri, Oct 25, 2013 at 9:56 AM, David Nolen <dnolen.li...@gmail.com>wrote: > >> What I suggested is far, far more conservative than anything else >> proposed on this or on the dev thread. >> > > I understand your point that records are a separate "island" unique to > Clojure-land, whereas the other Clojure types need to align with Java, and > therefore, are riskier to mess around with. But I find it hard to get > excited about a records-only solution, mainly because I hardly ever use > records. Using straight maps, sets, and vectors to represent data is > perfectly ordinary and idiomatic in Clojure, e.g., Paul's initial code > didn't use records to represent his objects. So solving the problem just > for records doesn't feel to me like much of a solution. > > > >> I suspect we can duplicate the approach already taken by Scala for case >> classes. >> >> >> > There are two things that jump out to me as things that might make it hard > to mimic Scala's approach for case classes in Clojure's records: > 1. Clojure records function like maps, and you can assoc more things into > them after construction. Scala is working with a fixed number of fields at > compile time. > 2. Scala knows the type of each of the fields at compile time, and so (if > I understand their approach correctly), they can compile a custom hashing > function for the case class that leverages the types of all its components > for maximum speed. > > -- > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to clojure@googlegroups.com > Note that posts from new members are moderated - please be patient with > your first post. > To unsubscribe from this group, send email to > clojure+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en > --- > You received this message because you are subscribed to the Google Groups > "Clojure" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to clojure+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/groups/opt_out. > -- -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
