Yes, transients mutate when updated. Seqs over sets are a immutable view over a collection. So if someone did get this to work, the implementation could be incorrect. And you could get something really strange like this:
(def s (transient #{1 2})) (def sq (seq s)) (first sq) => 1 (disj s 1) (second sq) => nil There's a dozen things that could go really wrong here, but that's the gist of it. On Sat, Feb 24, 2018 at 8:14 AM, 'Alan Forrester' via Clojure < clojure@googlegroups.com> wrote: > Calling (first #{1}) gives the result 1. > > Calling (first (transient #{1})) gives an error: > > “IllegalArgumentException Don't know how to create ISeq from: clojure.lang. > PersistentHashSet$TransientHashSet clojure.lang.RT.seqFrom (RT.java:550)” > > Is this behaviour intended? > > And whether or not this is intentional is there a way round it? > > Alan Forrester > > > -- > 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/d/optout. > -- “One of the main causes of the fall of the Roman Empire was that–lacking zero–they had no way to indicate successful termination of their C programs.” (Robert Firth) -- 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/d/optout.