In my local Clojure Users Group last week, we encountered an odd behavior with r/fold.
Specifically, it seems like the three-arity version (r/fold combiner-fn reducer-fn coll) doesn't call the combiner-fn if the coll has fewer elements than the default partition-size (512). This leads to some surprising behavior. For instance, Example 8 in this (written by someone else, and otherwise very nice) set of reducer examples will not calculate the average-age as desired, since the combiner-fn will not be called for a collection of just 100 elements: https://gist.github.com/ianrumford/6333358 I realize that for a combiner-fn with just zero-arity or two-arity versions defined, calling it on a single partition would not make sense. Perhaps r/fold should be revised so that if a combiner-fn is provided that has a single-arity version defined, it still gets called even if there is just one partition? -- 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.
