The input should be a sequence not a set, so call seq on the input before passing it to this function.
Sorry if that was unclear from the docs. (For some inputs, it is more forgiving, but when you call combinations with n=1, it calls distinct on the set, and clojure.core's implementation of distinct doesn't work on sets). On Wed, Mar 23, 2016 at 3:45 PM, Matthias Grabmair < [email protected]> wrote: > I am just using the math combinatorics library and spent some time > debugging until I found out that combinations does not accept n=1. Is this > intentional? > > > > *=> (clojure.math.combinatorics/combinations #{1 2 3 4} 1)* > > > > *UnsupportedOperationException nth not supported on this type: > PersistentHashSet clojure.lang.RT.nthFrom (RT.java:933)* > > > *expected: ((1)(2)(3)(4))* > > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to [email protected] > Note that posts from new members are moderated - please be patient with > your first post. > To unsubscribe from this group, send email to > [email protected] > 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 [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to [email protected] Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to [email protected] 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 [email protected]. For more options, visit https://groups.google.com/d/optout.
