> > > (fn [default initial-keys] > (loop [remaining-keys initial-keys > result-map {}] > (if (empty? remaining-keys) > result-map > (let [key (first remaining-keys) > remaining-keys' (rest remaining-keys) > result-map' (assoc result-map key default)] > (recur remaining-keys' result-map'))))) > > This also passes the unit tests. > > Maybe that’s a bit clearer as to what’s going on. Maybe the new names help > a bit. Notice the ticks on some of the names (the ‘ characters). This is > just a convention some programmers use. The ticks are part of the name, > nothing magic, and are used to indicate that the value of the name is > derived from the value of the name with one less tick. Some programmers use > numbers instead. Other programmers don’t care and just use the same name. > > When you’ve understood the solution you’ve come up with, you might want to > try using reduce to do this. It’ll be both shorter and much easier to > understand. If you look carefully at your code the only part that isn’t > boiler-plate is the (assoc result-map key default) — the boiler-plate > corresponds closely to what reduce does. > > Thanks,
Now It more clearer what loop does. I can look at a reduce solution but then I have to look which reduce I have to use. I know reduce + and reduce - which does calculations on the collection. Roelof -- 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.