Re: matching, assigning and branching in one form

or even without let: (condp re-find msg #"^:(.*?)!.*PRIVMSG (.*) :(.*)" :>> (fn [[_ from to message]] (true-form ...)) (false-form...)) On Saturday, June 22, 2013 11:26:35 PM UTC+12, Vincent wrote: > > What about using condp? > > (condp re-find msg > #"^:(.*?)!.*PRIVMSG (.*) :(.*)" :>> #(let

Re: Data vs API

Great question and great answers, thank you. Regarding (3), what if want to process various customer order implementations (say, sort them) in a polymorphic way depending just on their total-price? Assuming I do not control the implementations.. Is it ok in this case to define *HasTotalPrice* pr

Re: In what OS do you code?

OS X on the working machine, Ubuntu on the servers. For my project it makes little difference, especially with *brew* on the mac. Currently moving from vi to emacs. On Saturday, June 15, 2013 1:46:37 AM UTC+12, Erlis Vidal wrote: > > Hi, > > I'm a bit curious to know in what OS do you code. Do y

Re: Multiple args: opts map vs inline arguments

According, to the library coding standards, the first is better: (release-sharks 2 :laser-beams true); good (release-sharks 2 {:laser-beams true}) ; bad http://dev.clojure.org/display/design/Library+Coding+Standards On Tuesday, June 18, 2013 5:26:15 PM UTC+12, Omer Iqbal wrote: > > Hey folk

Re: Any alternatives for these two ugly patterns?

Sorry, that's just another suggestion for the first pattern. For the second, I would use: (cond-> obj (some-test obj) some-transformation) On Sunday, May 26, 2013 12:05:49 PM UTC+2, dmirylenka wrote: > > (merge {:attr something} obj) > > -- -- You received this mes

Re: Any alternatives for these two ugly patterns?

> > (merge {:attr something} obj) -- -- 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 unsubscr

Re: What's the point of -> ?

For me ->> is a bread and butter of working with collections, like here: (->> some-collection (concat other-collection) distinct (filter some-predicate) (sort-by some-sort-fn) (take 10)) On Monday, March 11, 2013 11:58:29 AM UTC+1, edw...@kenworthy.info wrote: >

Re: Found bug in contains? used with vectors.

Instead of (let [predicate #(contains? (set unselect) %1)] ...) I would write (let [predicate (set unselect)] ...) On Tuesday, September 4, 2012 11:10:04 AM UTC+2, Marcus Lindner wrote: > > I wanted to use it to select a random element in a collection (set, > vector or list) where I can define

Re: Found bug in contains? used with vectors.

As for contains? behavior on lists, it is fixed (CLJ-932) in Clojure 1.5, some 17 days ago: => (contains? '(1 2 3) 2); IllegalArgumentException contains? not supported on type: clojure.lang.PersistentList ...

Re: anonymous functions with names

Just 2 cents: A name you give to the anonymous function also appears in the stack traces instead of the things like fn_123_4532, which is very convenient for debugging. On Friday, August 31, 2012 5:52:55 PM UTC+2, Erlis Vidal wrote: > > Hi guys, > > I've been reading but I'm still confused abou

Re: (merge) => nil

assoc multiple keys and values without having to create a map out of them: (assoc m :a 1 :b 2) ; vs. (conj m {:a 1 :b 2}) On Thursday, August 30, 2012 1:31:41 AM UTC+2, dmirylenka wrote: > > I sort of remember Rich Hickey say this, but I am not sure :). > > As far as I see it, it is ge

Re: (merge) => nil

: (if (seq my-map) this that). On Thursday, August 30, 2012 12:46:05 AM UTC+2, Brian Marick wrote: > > > On Aug 29, 2012, at 2:08 PM, dmirylenka wrote: > > > I would say, they treat nil as an empty sequence, which makes nil, > effectively, a unit: > > > > (asso

Re: (merge) => nil

's my understanding ) . On Thursday, August 30, 2012 12:05:48 AM UTC+2, Meikel Brandmeyer (kotarak) wrote: > > Hi, > > Am 29.08.2012 um 23:38 schrieb dmirylenka: > > > Although, code working with maps shouldn't use conj anyway. > > Why? > > Kind regards > Mei

Re: another why: (flatten #{:a :b}) => () ???

s amazingly fast. So that > looks like the way to go. > > > > On Aug 29, 2012, at 3:47 PM, dmirylenka > > wrote: > > > Calling flatten on anything that is not 'sequential?' returns an empty > sequence: > > > > (flatten 1); => () >

Re: (merge) => nil

Hm.. There seem to be cases when nil is not equivalent to {} when working with maps: (conj {} [:a :b]); => {:a :b} (conj nil [:a :b]); => ([:a :b]) Although, code working with maps shouldn't use conj anyway. Any other examples? On Wednesday, August 29, 2012 9:08:07 PM UTC+2, dmiry

another why: (flatten #{:a :b}) => () ???

Calling flatten on anything that is not 'sequential?' returns an empty sequence: (flatten 1); => () (flatten "Hi"); => () With sets if feels somewhat strange: (flatten #{#{:a} #{:b :c}}); => () For some reason I expected #{#{:a} #{:b :c}} to equal #{:a :b :c}. Ok, the docstring says: "Takes

Re: (merge) => nil

I would say, they treat nil as an empty sequence, which makes nil, effectively, a unit: (assoc nil :a :b) ; => {:a :b} (merge nil {:a :b}) ; => {:a :b} etc. On Wednesday, August 29, 2012 7:36:26 PM UTC+2, Moritz Ulrich wrote: > > This isn't true in Clojure: http://clojure.org/lisps > > However,

Re: Clojure Sticker

I've got my stickers! So happy... On Friday, July 6, 2012 11:09:29 AM UTC+2, dmirylenka wrote: > > +1 > > On Sunday, June 10, 2012 3:03:46 AM UTC+2, aboy021 wrote: >> >> Is there anywhere that I can get a Clojure sticker? > > -- You received this messag

Re: Ideas for interactive tasks

lad to stay in touch for further discussions. >> >> Daniil >> >> Ideally I want students to develop some projects in clojure (game or web > project or something else). But I don't know whether they like this idea. > > Thank you for you reply! > > Nikita > >

Re: Ideas for interactive tasks

he BSU in > generally? :) > > Nikita > > > On Mon, Aug 13, 2012 at 9:00 PM, dmirylenka > > wrote: > >> Wow, too bad I already graduated :) >> >> ФПМИ? >> >> >> On Thursday, August 9, 2012 5:28:54 PM UTC+2, Nikita Beloglazov wrote: &g

Re: Ideas for interactive tasks

Wow, too bad I already graduated :) ФПМИ? On Thursday, August 9, 2012 5:28:54 PM UTC+2, Nikita Beloglazov wrote: > > Thank you, Jim. This is Belarusian State University. > > On Thu, Aug 9, 2012 at 6:23 PM, Jim - FooBar(); > > > wrote: > >> On 09/08/12 16:21, Nikita Beloglazov wrote: >> >>> I'm

Re: Pattern of Succinctness

Using threading operators + anonymous functions sometimes yields more succinct code than using HOF, especially because 'partial' and 'comp' are such long names: (comp count (partial filter nil?) (partial map foo)) #(->> % (map foo) (filter nil?) count) On Sunday, August 12, 2012 7:35:16 PM UT

Re: Pattern of Succinctness

Should be (filter (comp not nil?) coll) On Sunday, August 12, 2012 9:44:11 PM UTC+2, Pierre-Henry Perret wrote: > > I prefer (filter (partial not nil?) coll) as a HOF > > Le dimanche 12 août 2012 20:46:59 UTC+2, rmarianski a écrit : >> >> On Sun, Aug 12, 2012 at 11:22:55AM -0700, Takahiro Hozumi

Re: community interest in machine learning (?)

Not sure about the community, but I personally would be very interested in having a machine learning library or environment in Clojure. I'm playing with classification and clustering of academic papers, and use clojure for the whole research cycle - crawling and parsing the data from the web, t

Re: Clojure Sticker

+1 On Sunday, June 10, 2012 3:03:46 AM UTC+2, aboy021 wrote: > > Is there anywhere that I can get a Clojure sticker? -- 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 ne

Re: IllegalStateException "I/O in transaction" in REPL

hu, 2012-06-14 at 13:33 -0700, dmirylenka wrote: > > Could you please explain a bit more? > > > > I don't have any dosync in my code. > > Look through your backtrace for a call to > clojure.lang.LockingTransaction.runInTransaction. Its caller is using > dosync

Re: IllegalStateException "I/O in transaction" in REPL

Could you please explain a bit more? I don't have any dosync in my code. Daniil On Thursday, June 14, 2012 4:17:46 PM UTC+2, Meikel Brandmeyer (kotarak) wrote: > > Hi, > > the exception probably stems from the fact that you do the database > interaction inside a dosync transaction. > > Kind re