Thank you very much Plínio
On Thu, Apr 10, 2014 at 10:37 AM, Timothy Washington <twash...@gmail.com>wrote: > Good question. I've been rooting around arrow land for the past few days. > > *some->* , now a part of clojure.core, was originally in core.incubator > as *-?>*. From the documentation, it's the *same as clojure.core/-> but > returns nil as soon as the threaded value is nil itself (thus > short-circuiting any pending computation)*. So for example: > > (some-> "foo" .toUpperCase) > "FOO" > > (some-> "foo" .toUpperCase (.substring 1)) > "OO" > > > *as->* was introduced in 1.5, as part of a bunch of new threading > macros<https://github.com/clojure/clojure/blob/master/changes.md#24-new-threading-macros>. > It *binds name to expr, evaluates the first form in the lexical context > of that binding, then binds name to that result, repeating for each > successive form*.The example they give is below. > > > user=> (-> 84 > (/ 4) > (as-> twenty-one ;; uses the value from -> > (* 2 twenty-one))) ;; no threading here > 42 > > > Here's a few more arrow resources. > > - LonoCloud/synthread <https://github.com/LonoCloud/synthread> > - rplevy/swiss-arrows <https://github.com/rplevy/swiss-arrows> > - clojure/core.incubator <https://github.com/clojure/core.incubator> > - Build An Arrow ← <http://www.clojure.net/2013/10/16/Build-an-arrow/> > > > > Hth > > Tim Washington > Interruptsoftware.com <http://interruptsoftware.com> > > > > On Mon, Apr 7, 2014 at 10:02 PM, Plínio Balduino <pbaldu...@gmail.com>wrote: > >> Hi there >> >> It's being hard to find updated documentation with 1.5+ features and I'm >> confused about as-> and some->. >> >> Basically, what's the difference between the contrib -?> and the core >> some-> ? >> >> Thank you >> >> Plínio >> > -- > 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. > -- 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.
