Re: Plain clojure 1.9 fails with Could not locate ... clojure/spec/alpha.clj on classpath. in Kubuntu 18.04

Jesús Gómez wrote: > Simply: 1.7 works but 1.9 not. > Test: > $ # Download Clojure 1.7, 1.8 and 1.9 jars > $ seq 7 9 | xargs -L1 -I% wget http://repo1.maven.org/maven2/org/clojure/clojure/1.%.0/clojure-1.%.0.jar > $ seq 7 9 | xargs -L1 -I% java -jar clojure-1.%.0.jar -e

Re: class and case

Kevin Kleinfelter wrote: > Can someone help me get un-stuck with a problem of using class in a case? > > This returns true, as I expect: > (= (type "x") java.lang.String) > > This returns an error, and I'd hoped it would print STRING: > (case (type "x") > class

Re: Keywords with colon on the backside?

Timothy Baldridge wrote: > The syntax (I think) comes from Ruby although they call keywords "symbols". The reader syntax for Common Lisp's keywords has the leading colon too. John -- You received this message because you are subscribed to the Google Groups

Re: Quil and Core.async - Problems blocking thread with

JvJ wrote: > (try (do > (q/text "Putting beacon..."0 40) > (put! beacon true) > (let [ns ((q/fill 255) >(q/text (str "State: " ns) 0 60))) >(catch Exception e > (q/fill 255 0 0) > (q/text (str

Re: Land of lisp to Clojure

Cecil Westerhof cldwester...@gmail.com wrote: I read a little about it. And no, I do not use dynamic binding. So I probably should use atoms. Is there a convention how to name atoms? Nope, none that I've come across anyway. Dynamic variables can have very surprising effects if you're not aware

Re: Land of lisp to Clojure

Hi Cecil, Cecil Westerhof cldwester...@gmail.com wrote: - The book displays all the lines of a look on separate lines. In my case it is just one long line. Am I doing something wrong? No, you're not doing anything wrong. There's nothing in that data structure which would inherently cause it to

Re: Instaparse - thank you!

Agreed - thanks Mark! If anyone is able to share the query languages you're using (the language's grammar more than the implementation), I'd be very interested (and grateful). I'm always struggling to create reports for our non-technical staff which are flexible enough to be useful but don't

Re: Reduce vs. Comp

Hi, Mike Fikes mikefi...@me.com wrote: In fact, section 5 of that document defines comp as a reduce involving the identify function in some way. (Now, I want to re-read this paper, but translated into Clojure.) Here's one definition of comp in terms of reduce: (defn comp [ fs] (reduce (fn

Re: The Cons in iterate's return value

there's a reason to prefer one over the other? -- John Mastro -- 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

Re: How to work with variables that need to change

On Sat, Apr 12, 2014 at 5:13 AM, Cecil Westerhof cldwester...@gmail.com wrote: But it looks a ‘little’ cumbersome. Is there a better way to do this? Here's another way. Not the best way, but I offer it to introduce you to atoms [1] if you're not familiar yet. [1] http://clojure.org/atoms (def

Re: apply to quoted form

think that should be safe. (let [f '(+ 1 1)] (apply (resolve (first f) (rest f ;= 2 -- John Mastro -- 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

Re: apply to quoted form

On Fri, Mar 21, 2014 at 4:44 PM, John Mastro john.b.mas...@gmail.comwrote: (let [f '(+ 1 1)] (apply (resolve (first f) (rest f ;= 2 Sorry, I have a typo in there. It should be: (let [f '(+ 1 1)] (apply (resolve (first f)) (rest f))) -- John Mastro -- You received this message

Re: apply to quoted form

On Fri, Mar 21, 2014 at 4:44 PM, John Mastro john.b.mas...@gmail.comwrote: That's interesting. It seems it's the last form in the list that's being returned, and it doesn't matter what function you apply Sigh, clearly sometimes I type faster than I think. That should be it doesn't matter what

Re: STM and persistent data structures performance on mutli-core archs

Due to the path-copy semantics, the contention gets driven to the root of the tree. Out of curiosity, would reference counting (rather than or in addition to normal GC) help with this? Or is reference counting problematic in a highly concurrent environment? It seems like reference cycles

Re: shenandoah

after they become unreachable. The normal GC would then have a lot less to do, helping achieve shorter pauses. (AFAIK no such thing actually exists for the JVM, this is just an idle thought.) -- John Mastro -- You received this message because you are subscribed to the Google Groups Clojure group

Re: query on clojure maps / vectors

t x txrev...@gmail.com wrote: @David: * set operations is not what I'm looking for Just in case you didn't notice it (it's not called out very prominently), when the `clojure.set` documentation [1] mentions a rel it's referring to a set of maps - a table similar to what you mentioned. [1]

Re: map semantics

Hi Andy, Andy C andy.coolw...@gmail.com wrote: user (= s1 s2) true user (= (seq s1) (seq s2)) false Thx. If a=b then f(a) must = f(b). Something is broken here. If a seq is a sequential view of a thing, and a set is an unordered thing, then it does not seem shocking to me that multiple

Re: map semantics

/a priori/ mean they're wrong. - John John Mastro john.b.mas...@gmail.com wrote: Hi Andy, Andy C andy.coolw...@gmail.com wrote: user (= s1 s2) true user (= (seq s1) (seq s2)) false Thx. If a=b then f(a) must = f(b). Something is broken here. If a seq is a sequential view of a thing

Re: Help about using clojure in org mode in Emacs with CIDER

Stuart Sierra the.stuart.sie...@gmail.com wrote: Don't know if it's relevant or helpful here, but here's my Emacs org / babel / Clojure setup: Thanks Stuart, very useful indeed (for me anyway). - John -- -- You received this message because you are subscribed to the Google Groups Clojure

Re: let bindings

If there's another reason then I'm hoping someone will correct me, but I can't think of any other reasons at the moment. Since Clojure doesn't do tail call elimination implementing let atop fn would also use up stack. I believe many or all Schemes (which are required by the spec to eliminate

Re: bug in clojure.zip when calling next on empty list node?

Hi Lee, Can anyone tell if I'm right that this is a bug in clojure.zip? If so, then is the right thing to do to post an issue on JIRA? I don't have any insight regarding whether this is a bug (haven't yet had an opportunity to dig into clojure.zip or zippers in general). However, I think

Re: is there a tutorial about working at the REPL?

On Sun, Dec 29, 2013 at 1:30 PM, larry google groups lawrencecloj...@gmail.com wrote: Thanks for that. But the app has no problem reading the schema.edn file when I start the app with: java -jar admin-1-standalone.jar So why would it have trouble reading the file when I'm in the repl? Can

Re: is there a tutorial about working at the REPL?

Hi Larry, 4.) load whatever file holds the (main-) function that starts the app. So for me, for instance, it might be: (load-file src/admin/core.clj) I don't think the `load-file` should be necessary. Do things not work if you omit it? The code on disk when you jacked in will already have

Re: Is The Joy if Clojure up to date?

Manning (the publisher) has an interesting early-access program called MEAP. I used it to buy [1] electronic access to both the first edition and the second edition (the in-progress version immediately, plus the final version when it's released). I've been very happy with the arrangement. [1]

Re: Padding missing elements in a sequence of identical K/V maps

This was my first thought (quite close to Jim's): (def the-maps [{:key 3 :value 30} {:key 4 :value 40}]) (def mandatory-keys [1 2 3 4 5]) (defn find-missing-keys [maps keys] (let [found (into #{} (map :key maps))] (remove #(contains? found %) keys))) (defn ensure-mandatory-keys [maps]

Re: parse a text file that has some binary characters

On Tue, Nov 19, 2013 at 6:24 AM, smk mshanm...@hotmail.com wrote: Hi I am trying to parse a text file that has some binary characters(such as 0x001 or 0x002) and replace them with text characters. How to do it in clojure? Would something like this work? (require '[clojure.java.io :as io])

What's the -dup in print-dup?

This isn't a very deep question, but I wonder every time I come across it: to what does -dup in `print-dup` and `*print-dup*` refer? Thanks - John -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to

Re: Newbie question: How to add external clojure jars properly in Eclipse.

John, thanks. Not a stupid question at all. When learning a new language, a new environment, and using an unfamiliar OS, there are so many moving parts that it is sometimes hard to know where to begin when tracking stuff down. My old and favorite line here is that signposts are generally

Re: Newbie question: How to add external clojure jars properly in Eclipse.

So, clearly I need to get the libs onto the classpath. The questions are what libs, where and how? Forgive me if this is a stupid question, but have you already listed the dependency coordinates under the :dependencies key of your project.clj? Leiningen has a sample project.clj here:

Re: Question on mapcat and its variable arity

On Aug 25, 2013, at 2:43 PM, ngieschen nickgiesc...@gmail.com wrote: I'm somewhat new to clojure and trying to understand mapcat, so apologies in advance if this is an embarrassingly elementary question. mapcat's signature is (f colls) which indicates to me I should be able to so