The parameter order of as-> makes it convenient to use *inside *-> so you can name the threaded parameter only where it needs naming:
(-> "UFOT" (reverse) (->> (apply str)) (string/lower-case) (as-> x (string/replace "slip on a tofu" x "banana peel"))) On Friday, August 28, 2015 at 6:51:44 PM UTC-4, Alan Thompson wrote: > > I have become very partial to a simple adaptation of as-> from the Tupelo > Core <https://github.com/cloojure/tupelo> library. I almost always like > to be explicit about the location the previous value, since either -> or > ->> can sometimes be difficult if the threading forms don't always want the > arg as the first or last parameter. Copying the pattern of Groovy/Ruby, I > almost always name the threading placeholder "it". Since I don't like > repetition (& I would argue that the as-> form has its params backwards!) I > created the simple it-> form: > > (defmacro it-> > "A threading macro like as-> that always uses the symbol 'it' as the > placeholder for the next threaded value: > (it-> 1 > (inc it) > (+ it 3) > (/ 10 it)) > ;=> 2 > " > [expr & forms] > `(let [~'it ~expr > ~@(interleave (repeat 'it) forms) > ] > ~'it )) > > > Alan > > > On Fri, Aug 28, 2015 at 6:14 AM, Akhil Wali <akhil....@gmail.com > <javascript:>> wrote: > >> Good one! >> >> On Fri, Aug 28, 2015 at 6:34 PM, Moe Aboulkheir <m...@nervous.io >> <javascript:>> wrote: >> >>> The function is actually shorter without cond->: (conj (if first? args >>> (vec args)) x) >> >> >> >> >> >> -- >> Akhil Wali >> >> # https://github.com/darth10 >> # https://darth10.github.io >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Clojure" group. >> To post to this group, send email to clo...@googlegroups.com >> <javascript:> >> Note that posts from new members are moderated - please be patient with >> your first post. >> To unsubscribe from this group, send email to >> clojure+u...@googlegroups.com <javascript:> >> 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+u...@googlegroups.com <javascript:>. >> 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.