Hi everyone, I'm new to Clojure and trying to learn my way around the language.
I've written a function that sums the frequencies of words starting with the same letter, however I'm not fully satisfied with the result. I'm striving for readability and idomaticity, but I fear that my rather limited grasp of Clojure's core functions and lack of experience with functional programming are letting me down on both counts. (def text (slurp "http://www.ccel.org/ccel/bible/kjv.txt";)) (defn sum-last-elements [coll] (reduce + (map last coll))) (defn group-first-elements [coll] (map first coll)) (->> text (re-seq #"(?:(?:\bm[a|e]n\b)|(?:\bwom[a|e]n\b)|(?:\bchild\b)|(?:\bchildren\b))") frequencies (group-by ffirst) vals (#(zipmap (map group-first-elements %) (map sum-last-elements %)))) Which on that file gives the result: {("woman" "women") 663, ("children" "child") 2274, ("men" "man") 5314} My questions: 1. Is there a way to avoid using ?: everywhere in the regex? 2. (group-by ffirst) vals - is there a more readable/declarative/idiomatic way to group by first letter? 3. Is there a trick to avoid the ugly looking anonymous function (which I'm only using to reorder the thread-last argument)? 4. Is it idiomatic to extract small functions to give them names (with an eye to aiding readability) or would most Clojure programmers prefer these to be anonymous and in-line? 5. Is thread-last the right approach when dealing with nested data-structures or is list comprehension, or some other approach preferred? Thanks in advance for any help. -- -- 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.
