So I've written a transducer to build up urls from relative links: (defn build-url ([root] (fn [xf] (fn ([] (xf)) ([links] (xf links)) ([links suffix] (xf links (let [root (if (.endsWith root ".html") (string/replace root #"\w+\.html$" "") root)] (str root suffix))))))))
This works great when I know the "root" in advance. The issue is that I want to run this recursively, building up the links as I go. As an example: 1) The main index page is, e.g., "http://www.website.com/index.html". The "index.html" part gets stripped off by the transducer, leaving the root as "http://www.website.com/index.html". 2) index.html contains, inter alia, a list of links to other index pages, e.g. "/index1/", "/index2/", etc. 3) Running the transducer once yields `["http://www.website.com/index1/", "http://www.website.com/index2/"...]` 4) I want to be able to then run the transducer again on the links scraped from each of the sub-indexes, ensuring that each is compounded with the correct root element, e.g. `["http://www.website.com/index1/foo", "http://www.website.com/index1/bar", "http://www.website.com/index2/baz", "http://www.website.com/index2/quux"...]` Ideally, I'd like to be able to do this with as little intermediate "stuff" as possible, i.e., not doing something like `(into [] (comp transducer1 transducer2 build-url) (into [] (comp transducer3 build-url)))`. Is there a way to capture this with transducers? Something like (fn [foo] (mapcat #(somefn foo %) (someotherfn foo))? -- 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.