Sum-partial-def gets the original + definition because it is evaluated first, if you want late binding, try (partial reduce (var +)).
On Dec 1, 2016 4:05 PM, "Matthew Hamrick" <matthewjhamr...@gmail.com> wrote: > I'm confused by the following code. > Could someone explain to me why the def-ed partial has different behavior > to the letted one? > This is especially confusing to me since the #() special form one works as > I expect. > > (def sum-partial-def (partial reduce +)) > > (let [sum-partial (partial reduce +) > sum-# #(reduce + %1) > nums [1 2 3 4]] > [(sum-partial-def nums) > (reduce + nums) > (sum-# nums) > (sum-partial nums)]) ;; => [10 10 10 10] > > (with-redefs [+ (fn [a b] > (.add (.add (BigInteger. (str a)) > (BigInteger. (str b))) > (BigInteger/ONE)))] > (let [sum-partial (partial reduce +) > sum-# #(reduce + %1) > nums [1 2 3 4]] > [(sum-partial-def nums) > (reduce + nums) > (sum-# nums) > (sum-partial nums)])) ;; => [10 13 13 13] > > Thanks, > Matt > > -- > 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. > -- 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.
