(iterate inc 1) is not the function vector is what you do is call vector with the first of primes and (iterate inc 1)
so the first things map does is (vector 1 2) => [1 2] (vector 2 3) => [2 3] (vector 2 5) => [3 5] meaning the first is the index number the second is the corresponding prime number (take 5 ordinals-and-primes) would therefore look like this ([1 2] [2 3] [3 5] [4 7] [5 11]) On 28 Aug., 16:57, HB <hubaghd...@gmail.com> wrote: > Hey, > I came across this method: > > (use '[clojure.contrib.lazy-seqs :only (primes)]) > (def ordinals-and-primes (map vector (iterate inc 1) primes)) > > map macro has this format: > (map function collection) > primes is the collection and (iterate inc 1) is the function to apply > on each element of the collection but how vector is applied here? > > But I don't understand the previous method, would you please explain > it to me. > Thanks. -- 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
