Elvish – An experimental Unix shell in Go

Re:Elvish – An experimental Unix shell in Go by nathell on Saturday July 26, 2014 @05:53PM (#8090926)

Clojure has -> specifically to facilitate writing pipeline code that doesn't read backwards.

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Re:Elvish – An experimental Unix shell in Go by tgkokk on Saturday July 26, 2014 @06:11PM (#8090994)

Or, in this case, ->>:

  (def lols (->> strs
                 (filter #(re-find #"LOL" %))
                 (map upper-case)
                 sort))

How I read it: take strs, filter the strings that contain "LOL", turn them into upper case and then sort them. Basically it reads the same as the pipeline example in the README.

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Re:Elvish – An experimental Unix shell in Go by roryokane on Saturday July 26, 2014 @06:14PM (#8091005)

Right – though for this example, `->>` (http://grimoire.arrdem.com/1.6.0/clojure.core/DASH__GT__GT/) works better than `->`. I created a GitHub issue to tell the creator about it: https://github.com/xiaq/elvish/issues/17.

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Re:Elvish – An experimental Unix shell in Go by xiaq on Saturday July 26, 2014 @09:57PM (#8091689)

(Also see my reply to thinkpad20.) I'm not sure about Haskell, but Clojure's -> is still a serial construct (functions invoked one after another), but pipeline is parallel.

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