Fair enough. Now I'm beggining to truly appreciate as->, thank you. I still believe as->> would be somewhat useful but I don't see it getting added to clojure.core now.
On Mon, Feb 18, 2013 at 9:10 PM, Marko Topolnik <marko.topol...@gmail.com>wrote: > as-> is meant to be used as the only threading form. In your example you'd > want to replace the initial ->> with as->. > > > On Monday, February 18, 2013 9:04:55 PM UTC+1, vemv wrote: > >> That extra parenses trick is neat, never thought of that! >> >> As for as->> being redundant - it could be considered so indeed, given >> that as-> can be lambified: (->> [] (#(as-> % x (map inc x)))) - but >> that's pretty damn ugly haha. If you were thinking something else, please >> let me know. >> >> Thanks - Victor >> >> On Mon, Feb 18, 2013 at 8:44 PM, Marko Topolnik <marko.t...@gmail.com>wrote: >> >>> On Monday, February 18, 2013 5:40:51 PM UTC+1, vemv wrote: >>> >>>> >>>> And neither can be solved by adding a lambda: >>>> >>>> (-> [[1 1 1] 2 3] (nth 0) #(map inc %)) ;; fail >>>> >>> >>> Lambda does solve it, you are just missing the parens around the lambda: >>> >>> (-> [[1 1 1] 2 3] (nth 0) (#(map inc %))) >>> >>> >>> >>>> Clojure 1.5's as->, though, can come to the rescue. >>>> >>>> (-> [[1 1 1] 2 3] (nth 0) (as-> x (map inc x))) ;; cool >>>> >>>> Now, I only wish 1.5 came with as->> macro! Its implemetation is >>>> trivial anyway. >>>> >>>> (->> [1 2 3] (as->> _ (nth _ 0))) >>>> >>>> Of course, for the given examples, using these "as" forms is overkill. >>>> But if you've ever ended up writing large expressions (especially when >>>> experimenting) which arbitrarily nest/interleave ->> and ->, using as-> and >>>> as->> can provide a more sequential, structured alternative. >>>> >>>> Couldn't find any related discussion about the uses of as->, as its >>>> name is unfriendly to Google/JIRA searches. Thoughts? >>>> >>> >>> as-> is actually a generalization of both -> and ->>: you get to choose >>> where to involve the previous result in each form. That is why as->> would >>> be redundant. >>> >>> -Marko >>> >>> -- >>> -- >>> 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 >>> >>> 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 >>> >>> For more options, visit this group at >>> http://groups.google.com/**group/clojure?hl=en<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. >>> >>> For more options, visit >>> https://groups.google.com/**groups/opt_out<https://groups.google.com/groups/opt_out> >>> . >>> >>> >>> >> >> -- > -- > 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/groups/opt_out. > > > -- -- 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/groups/opt_out.
