Re: unconditional append to end
Thank you for the cheat sheet refs. Definitely helpful. Anybody have any insight into the current state of clojuredocs.org? Alan On Sun, Feb 9, 2014 at 9:38 PM, mynomoto mynom...@gmail.com wrote: +1 to the Cheat Sheet although I prefer this version: http://jafingerhut.github.io/cheatsheet-clj-1.3/cheatsheet-tiptip-cdocs-summary.html After you go though the cheat sheet you can try http://clojure.github.io/clojure It's more complete but way less nice. On Monday, February 10, 2014 3:21:16 AM UTC-2, Mars0i wrote: On Sunday, February 9, 2014 10:45:04 PM UTC-6, Alan Thompson wrote: ... I saw an email a while back that claimed ClojureDocs.org is working on a re-write of the site, and an upgrade from Clojure 1.2 to 1.5. In the meantime, is there a better way of exploring the API? Not a full answer, but I get a lot of mileage from the cheatsheet: http://clojure.org/cheatsheethttp://www.google.com/url?q=http%3A%2F%2Fclojure.org%2Fcheatsheetsa=Dsntz=1usg=AFQjCNHFa1Bf-ol_ynMqIARWPVgJ-VfYXA -- 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.
Re: unconditional append to end
Someone needs to make a flappy bird version of http://jafingerhut.github.io/cheatsheet-clj-1.3/cheatsheet-tiptip-cdocs-summary.html It provides a description of the function, you type in the function name. :-) On Mon, Feb 10, 2014 at 8:22 AM, Alan Thompson thompson2...@gmail.com wrote: Thank you for the cheat sheet refs. Definitely helpful. Anybody have any insight into the current state of clojuredocs.org? Alan On Sun, Feb 9, 2014 at 9:38 PM, mynomoto mynom...@gmail.com wrote: +1 to the Cheat Sheet although I prefer this version: http://jafingerhut.github.io/cheatsheet-clj-1.3/cheatsheet-tiptip-cdocs-summary.html After you go though the cheat sheet you can try http://clojure.github.io/clojure It's more complete but way less nice. On Monday, February 10, 2014 3:21:16 AM UTC-2, Mars0i wrote: On Sunday, February 9, 2014 10:45:04 PM UTC-6, Alan Thompson wrote: ... I saw an email a while back that claimed ClojureDocs.org is working on a re-write of the site, and an upgrade from Clojure 1.2 to 1.5. In the meantime, is there a better way of exploring the API? Not a full answer, but I get a lot of mileage from the cheatsheet: http://clojure.org/cheatsheet -- 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. -- 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.
Re: unconditional append to end
You can see the project of the new clojuredocs.org on https://github.com/clojuredocs/web There is discussion about clojuredocs.org here https://groups.google.com/d/msg/clojure/jWMaop_eVaQ/I-H4Fn1brVcJ But I don't know about the current status. Marcelo On Monday, February 10, 2014 2:22:04 PM UTC-2, Alan Thompson wrote: Thank you for the cheat sheet refs. Definitely helpful. Anybody have any insight into the current state of clojuredocs.org? Alan On Sun, Feb 9, 2014 at 9:38 PM, mynomoto myno...@gmail.com javascript:wrote: +1 to the Cheat Sheet although I prefer this version: http://jafingerhut.github.io/cheatsheet-clj-1.3/cheatsheet-tiptip-cdocs-summary.html After you go though the cheat sheet you can try http://clojure.github.io/clojure It's more complete but way less nice. On Monday, February 10, 2014 3:21:16 AM UTC-2, Mars0i wrote: On Sunday, February 9, 2014 10:45:04 PM UTC-6, Alan Thompson wrote: ... I saw an email a while back that claimed ClojureDocs.org is working on a re-write of the site, and an upgrade from Clojure 1.2 to 1.5. In the meantime, is there a better way of exploring the API? Not a full answer, but I get a lot of mileage from the cheatsheet: http://clojure.org/cheatsheethttp://www.google.com/url?q=http%3A%2F%2Fclojure.org%2Fcheatsheetsa=Dsntz=1usg=AFQjCNHFa1Bf-ol_ynMqIARWPVgJ-VfYXA -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.comjavascript: 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/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.
Re: unconditional append to end
On Friday, February 7, 2014 7:20:09 PM UTC-5, t x wrote: Thus, my question: is there a builtin to _unconditinoally_ append to the end of a list/sequence/vector? Not built in. If you want things to grow at the end, you probably want vectors anyway. So try this: (defn conjv [coll item] (conj (vec coll) item)) -S -- 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.
Re: unconditional append to end
On Monday, February 10, 2014 11:56:18 AM UTC-6, t x wrote: Someone needs to make a flappy bird version of http://jafingerhut.github.io/cheatsheet-clj-1.3/cheatsheet-tiptip-cdocs-summary.html It provides a description of the function, you type in the function name. :-) Like this? : ~$ clojure user= (doc conj) - clojure.core/conj ([coll x] [coll x xs]) conj[oin]. Returns a new collection with the xs 'added'. (conj nil item) returns (item). The 'addition' may happen at different 'places' depending on the concrete type. nil user= -- 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.
Re: unconditional append to end
On Sunday, February 9, 2014 11:38:39 PM UTC-6, mynomoto wrote: +1 to the Cheat Sheet although I prefer this version: http://jafingerhut.github.io/cheatsheet-clj-1.3/cheatsheet-tiptip-cdocs-summary.html Several variations on the cheatsheet are available via links from the main cheatsheet page http://clojure.org/cheatsheet, including that one, btw. -- 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.
Re: unconditional append to end
I find clojureatlas.com very helpful for exploring the API, especially since it is concept-based (so Maps is a concept that shows all the related functions and concepts). It's only up to 1.4.0 - hopefully Chas will update it to 1.5 / 1.6 at some point - but it's better than a site stuck at 1.2... Sean On Feb 9, 2014, at 8:45 PM, Alan Thompson thompson2...@gmail.com wrote: Holy cow! Where have these been hiding! They don't show up on ClojureDocs.org at all!!! I was about to write my own macro vmap to implement (vec (map(...)) for just the use cases outlined above. I just looked on clojure.org, and searching on map doesn't return any (useful) results. I eventually found it alphabetically on a sub-page in the API area. I saw an email a while back that claimed ClojureDocs.org is working on a re-write of the site, and an upgrade from Clojure 1.2 to 1.5. In the meantime, is there a better way of exploring the API? Alan On Sat, Feb 8, 2014 at 1:44 AM, mynomoto mynom...@gmail.com wrote: Maybe you could use mapv and filterv? This way you will always get a vector and conj apends in the end. signature.asc Description: Message signed with OpenPGP using GPGMail
Re: unconditional append to end
Holy cow! Where have these been hiding! They don't show up on ClojureDocs.org at all!!! I was about to write my own macro vmap to implement (vec (map(...)) for just the use cases outlined above. I just looked on clojure.org, and searching on map doesn't return any (useful) results. I eventually found it alphabetically on a sub-page in the API area. I saw an email a while back that claimed ClojureDocs.org is working on a re-write of the site, and an upgrade from Clojure 1.2 to 1.5. In the meantime, is there a better way of exploring the API? Alan On Sat, Feb 8, 2014 at 1:44 AM, mynomoto mynom...@gmail.com wrote: Maybe you could use mapv and filterv? This way you will always get a vector and conj apends in the end. On Friday, February 7, 2014 10:20:09 PM UTC-2, t x wrote: Consider the following: (cons 1 '(2 3 4)) == (1 2 3 4) (cons 1 [2 3 4]) == (1 2 3 4) (conj '(a b c) 1) == (1 a b c) (conj '[a b c] 1) == [a b c 1] Now, I would like something that _always_ * appends to the end cons is almost what I want, except it always appends to front. conj is not what I want -- in fact, I'm afraid of conj. Often times, I'll run map/filter on something, and suddenly, instead of a vector, I now have a list -- and conj changes the order of the item added. Thus, my question: is there a builtin to _unconditinoally_ append to the end of a list/sequence/vector? Thanks! -- 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.
Re: unconditional append to end
On Sunday, February 9, 2014 10:45:04 PM UTC-6, Alan Thompson wrote: ... I saw an email a while back that claimed ClojureDocs.org is working on a re-write of the site, and an upgrade from Clojure 1.2 to 1.5. In the meantime, is there a better way of exploring the API? Not a full answer, but I get a lot of mileage from the cheatsheet: http://clojure.org/cheatsheet -- 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.
Re: unconditional append to end
+1 to the Cheat Sheet although I prefer this version: http://jafingerhut.github.io/cheatsheet-clj-1.3/cheatsheet-tiptip-cdocs-summary.html After you go though the cheat sheet you can try http://clojure.github.io/clojure It's more complete but way less nice. On Monday, February 10, 2014 3:21:16 AM UTC-2, Mars0i wrote: On Sunday, February 9, 2014 10:45:04 PM UTC-6, Alan Thompson wrote: ... I saw an email a while back that claimed ClojureDocs.org is working on a re-write of the site, and an upgrade from Clojure 1.2 to 1.5. In the meantime, is there a better way of exploring the API? Not a full answer, but I get a lot of mileage from the cheatsheet: http://clojure.org/cheatsheethttp://www.google.com/url?q=http%3A%2F%2Fclojure.org%2Fcheatsheetsa=Dsntz=1usg=AFQjCNHFa1Bf-ol_ynMqIARWPVgJ-VfYXA -- 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.
Re: unconditional append to end
Maybe you could use mapv and filterv? This way you will always get a vector and conj apends in the end. On Friday, February 7, 2014 10:20:09 PM UTC-2, t x wrote: Consider the following: (cons 1 '(2 3 4)) == (1 2 3 4) (cons 1 [2 3 4]) == (1 2 3 4) (conj '(a b c) 1) == (1 a b c) (conj '[a b c] 1) == [a b c 1] Now, I would like something that _always_ * appends to the end cons is almost what I want, except it always appends to front. conj is not what I want -- in fact, I'm afraid of conj. Often times, I'll run map/filter on something, and suddenly, instead of a vector, I now have a list -- and conj changes the order of the item added. Thus, my question: is there a builtin to _unconditinoally_ append to the end of a list/sequence/vector? Thanks! -- 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.
Re: unconditional append to end
Or use vec to turn a sequence into a vector. As a general comment, using a dynamically typed language should not be seen as an opportunity not to think about types. You should still design your functions, think about the types they should receive, etc. Not having the compiler to check it for you actually places more burden on yourself and your self-discipline. You're basically taking responsibility for type checking in your head, in exchange for less (keyboard) typing and more flexibility. Generally speaking, people complaining about conj makes me wonder if they see the above tradeoff in the same light as I do. On 8 February 2014 10:44, mynomoto mynom...@gmail.com wrote: Maybe you could use mapv and filterv? This way you will always get a vector and conj apends in the end. On Friday, February 7, 2014 10:20:09 PM UTC-2, t x wrote: Consider the following: (cons 1 '(2 3 4)) == (1 2 3 4) (cons 1 [2 3 4]) == (1 2 3 4) (conj '(a b c) 1) == (1 a b c) (conj '[a b c] 1) == [a b c 1] Now, I would like something that _always_ * appends to the end cons is almost what I want, except it always appends to front. conj is not what I want -- in fact, I'm afraid of conj. Often times, I'll run map/filter on something, and suddenly, instead of a vector, I now have a list -- and conj changes the order of the item added. Thus, my question: is there a builtin to _unconditinoally_ append to the end of a list/sequence/vector? Thanks! -- 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.
unconditional append to end
Consider the following: (cons 1 '(2 3 4)) == (1 2 3 4) (cons 1 [2 3 4]) == (1 2 3 4) (conj '(a b c) 1) == (1 a b c) (conj '[a b c] 1) == [a b c 1] Now, I would like something that _always_ * appends to the end cons is almost what I want, except it always appends to front. conj is not what I want -- in fact, I'm afraid of conj. Often times, I'll run map/filter on something, and suddenly, instead of a vector, I now have a list -- and conj changes the order of the item added. Thus, my question: is there a builtin to _unconditinoally_ append to the end of a list/sequence/vector? Thanks! -- 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.
Re: unconditional append to end
For efficient appends at the end you need a vector. Using the sequence library can be tricky while you're putting together your data structures because it's likely that you'll not done yet with type-specific functions. You'll need to re-create your vector after using map/filter/etc to be able to keep adding at the end. On Friday, February 7, 2014 4:20:09 PM UTC-8, t x wrote: Consider the following: (cons 1 '(2 3 4)) == (1 2 3 4) (cons 1 [2 3 4]) == (1 2 3 4) (conj '(a b c) 1) == (1 a b c) (conj '[a b c] 1) == [a b c 1] Now, I would like something that _always_ * appends to the end cons is almost what I want, except it always appends to front. conj is not what I want -- in fact, I'm afraid of conj. Often times, I'll run map/filter on something, and suddenly, instead of a vector, I now have a list -- and conj changes the order of the item added. Thus, my question: is there a builtin to _unconditinoally_ append to the end of a list/sequence/vector? Thanks! -- 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.
Re: unconditional append to end
You should use a vector, but it's also possible to use concat. For example, (concat '(1 2 3) [4]) will give you (1 2 3 4). This made me curious as to the best way to get a collection into vector, so I played around with it some: user= (def r 10) #'user/r user= (def coll (range 1)) #'user/coll user= (def coll-v (into [] coll)) #'user/coll-v user= (time (dotimes [_ r] (conj (into [] coll) :a))) Elapsed time: 14074.018464 msecs nil user= (time (dotimes [_ r] (conj (apply vector coll) :a))) Elapsed time: 22565.594515 msecs nil user= (time (dotimes [_ r] (conj (vec coll) :a))) Elapsed time: 22424.174719 msecs nil user= (time (dotimes [_ r] (concat coll '(:a Elapsed time: 5.366059 msecs nil user= (time (dotimes [_ r] (concat coll-v '(:a Elapsed time: 5.56465 msecs nil user= (time (dotimes [_ r] (conj coll-v :a))) Elapsed time: 10.65771 msecs nil user= (time (dotimes [_ r] (concat coll coll))) Elapsed time: 6.048041 msecs nil user= (time (dotimes [_ r] (apply conj coll-v coll-v))) Elapsed time: 72414.847105 msecs nil Surprisingly it looks like (concat coll '(:a)) is faster than (conj coll-v :a). That's not really what I would expect; does anybody have a good explanation for this? Did I just bork the test somehow, or - I mean, obviously concat's pretty fast but I was expecting conj to be on the level. In fact, if you convert and then conj it's significantly slower than using concat. ...not that it'd really matter, in basically all cases, since (into [] ...) is definitely still in the fast enough category. Still, if you're building a sequence, what's the reasoning against using (concat coll ...) instead of (conj (into [] ...) ...)? Is it a matter of elegance, or is there a specific practical reason? On Friday, February 7, 2014 8:06:20 PM UTC-8, Armando Blancas wrote: For efficient appends at the end you need a vector. Using the sequence library can be tricky while you're putting together your data structures because it's likely that you'll not done yet with type-specific functions. You'll need to re-create your vector after using map/filter/etc to be able to keep adding at the end. On Friday, February 7, 2014 4:20:09 PM UTC-8, t x wrote: Consider the following: (cons 1 '(2 3 4)) == (1 2 3 4) (cons 1 [2 3 4]) == (1 2 3 4) (conj '(a b c) 1) == (1 a b c) (conj '[a b c] 1) == [a b c 1] Now, I would like something that _always_ * appends to the end cons is almost what I want, except it always appends to front. conj is not what I want -- in fact, I'm afraid of conj. Often times, I'll run map/filter on something, and suddenly, instead of a vector, I now have a list -- and conj changes the order of the item added. Thus, my question: is there a builtin to _unconditinoally_ append to the end of a list/sequence/vector? Thanks! -- 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.
Re: unconditional append to end
On Fri, Feb 7, 2014 at 9:08 PM, Travis Moy moytra...@gmail.com wrote: Surprisingly it looks like (concat coll '(:a)) is faster than (conj coll-v :a). That's not really what I would expect; does anybody have a good explanation for this? Did I just bork the test somehow, or - I mean, obviously concat's pretty fast but I was expecting conj to be on the level. In fact, if you convert and then conj it's significantly slower than using concat. concat is lazy, so it's not really doing any work until you try to realize the sequence -- that's why it is so fast. -- 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.
Re: unconditional append to end
Ah! That makes more sense. Yeah, after I forced it to realize the sequence, it turned out that concat was a lot slower than sticking it into an array: #'user/r user= (def coll (range 1)) #'user/coll user= (def coll-v (into [] coll)) #'user/coll-v user= (time (dotimes [_ r] (count (concat coll '(:a) Elapsed time: 55803.147526 msecs nil user= (time (dotimes [_ r] (count (conj coll-v :a Elapsed time: 18.591737 msecs nil user= (time (dotimes [_ r] (count (conj (into [] coll) :a Elapsed time: 16224.79319 msecs nil On Friday, February 7, 2014 9:26:05 PM UTC-8, puzzler wrote: On Fri, Feb 7, 2014 at 9:08 PM, Travis Moy moyt...@gmail.comjavascript: wrote: Surprisingly it looks like (concat coll '(:a)) is faster than (conj coll-v :a). That's not really what I would expect; does anybody have a good explanation for this? Did I just bork the test somehow, or - I mean, obviously concat's pretty fast but I was expecting conj to be on the level. In fact, if you convert and then conj it's significantly slower than using concat. concat is lazy, so it's not really doing any work until you try to realize the sequence -- that's why it is so fast. -- 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.
