Re: Good "refs" on concurrency?

I think the strongest argument I ever found and which indicates the complexity involved with Concurrent programming are the following 2 articles: 1. The too much milk problem This is taken fr

Re: Using Runtime.exec to copy a file to a secure server.

Thanks for your replies. I'll checkout shell-out to see what it's doing differently than what I'm doing. That will help me figure out what I'm missing. -Patrick -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to cloj

Re: compojure/defservlet

I can't find it either. The closest thing seems to be the servlet macro: (definline servlet "Create a servlet from a sequence of routes. Automatically updates if the routes binding is redefined." [routes] `(proxy [HttpServlet] [] (~'service [request# response#] (request-handle

Re: Using Runtime.exec to copy a file to a secure server.

You should probably use SSH keys instead of passwords. If you can't for some reason... Two interesting avenues: use shell-out, or use Ant. http://ant.apache.org/manual/OptionalTasks/scp.html (use 'clojure.contrib.shell-out) ;; Returns a map with useful keys like :exit. (sh :return-map true

Re: Using Runtime.exec to copy a file to a secure server.

2010/1/20 CuppoJava : > (.. Runtime getRuntime (exec "scp myfile.txt u...@server:")) > (Thread/sleep 1000) > (.. Runtime getRuntime (exec "mypassword")) This creates two separate unrelated processes. You could instead get the stream of the original process and send it the info. -- You received th

Re: Empty defstruct

2010/1/20 Andreas Wenger : > (struct-map person :name "Bill") Hi Andreas, Just another option to consider: {:type :person, :name "Bill", :age 20} I'll steer clear of discussing the original question :) Regards, Tim. -- You received this message because you are subscribed to the Google Groups

Using Runtime.exec to copy a file to a secure server.

I've run into the need to copy the same file to 500 different nodes on a computing cluster, so I thought I'd save myself some time by writing a loop in Clojure to do that. But the server requires a password to be entered, and I'm not sure how to automatically supply that password. Here's the manu

Re: Empty defstruct

I think your use of "workaround" is pejorative. And can it even be called a work around if it is a best practice even when there is nothing to work around? On Tue, Jan 19, 2010 at 4:28 PM, Andreas Wenger wrote: >> how is that not an argument? I'm pretty sure I just used it as one. > > What I want

compojure/defservlet

Hi: The compojure wikibook claims that compojure provides a defservlet function, along with other syntactic conveniences that I seem to be missing. Grepping the git log didn't turn up anything relevant, so I'm wondering: Is compojure supposed to provide defservlet, or should I fix the wikib

Re: Empty defstruct

> how is that not an argument? I'm pretty sure I just used it as one. What I wanted to say is that you are completely right, if you say that it is easy to create a workaround. But although doing this is easy, this does not mean that we should not fix this inconsistency (or do you see none?) anyway

Re: Empty defstruct

how is that not an argument? I'm pretty sure I just used it as one. keep in mind defstruct is largely to be superseded by deftype. http://clojure.org/contributing On Tue, Jan 19, 2010 at 4:10 PM, Andreas Wenger wrote: >> I fail to see how it requires changing a lot of code. it just means >> you

Re: Empty defstruct

> > And documentary style is lost. Would be ok though, but not optimal. > > On the contrary, I think > >    {:name "Bill" :age 23 :friends 20} > > is better than > >    (struct-map person "Bill" 23 20) Please review the definition of struct-map... Actually we seem to have the same opinion! Even be

Re: Empty defstruct

> I fail to see how it requires changing a lot of code. it just means > you need to change the place where you create your maps. which if you > are also type tagging them is a lot of repetitive code, so it should > already be factored out into a function, so then you just switch out > one function.

Re: Empty defstruct

And documentary style is lost. Would be ok though, but not optimal. On the contrary, I think {:name "Bill" :age 23 :friends 20} is better than (struct-map person "Bill" 23 20) -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this gr

Re: Empty defstruct

I fail to see how it requires changing a lot of code. it just means you need to change the place where you create your maps. which if you are also type tagging them is a lot of repetitive code, so it should already be factored out into a function, so then you just switch out one function. On Tue,

Re: Empty defstruct

> I think Andreas's point is that there's a discontinuity: > > 0 required keys: map > 1 required key:  struct-map > 2 required keys: struct-map > ... That's exactly the point! If I change only a little detail in my program, this can have impact on a huge part of my program. I can not see any reaso

Re: Empty defstruct

On 20 Jan., 00:56, Kevin Downey wrote: > clojure structs are an optimized version of maps for a set of shared > keys. if you don't have a defined set of shared keys you just have a > map. so by all means, use a map You're talking about the implementation in the background, but I am talking about

Re: Empty defstruct

clojure structs are an optimized version of maps for a set of shared keys. if you don't have a defined set of shared keys you just have a map. so by all means, use a map I think Andreas's point is that there's a discontinuity: 0 required keys: map 1 required key: struct-map 2 required keys: st

Re: Empty defstruct

clojure structs are an optimized version of maps for a set of shared keys. if you don't have a defined set of shared keys you just have a map. so by all means, use a map On Tue, Jan 19, 2010 at 3:52 PM, Andreas Wenger wrote: > Hi, > > I would like to know why defstruct without providing any keys

Empty defstruct

Hi, I would like to know why defstruct without providing any keys (like "(defstruct s)") is not allowed (exception: "Must supply keys"). Let me shortly describe why I think that this would be useful: Imagine you have a defstruct like in Rich's Ants demo: (defstruct cell :food :pher) ;may also ha

Re: Inspecting multimethods

Is there a way to (programatically) discover the set of methods belonging to a multimethod? clojure.core/methods ([multifn]) Given a multimethod, returns a map of dispatch values -> dispatch fns -- You received this message because you are subscribed to the Google Groups "Clojure" group. To

Inspecting multimethods

Is there a way to (programatically) discover the set of methods belonging to a multimethod? Thank you. -- 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

Re: Why "recur"?

I kind of agree that loop acts as a point for recursion, however if the auo-TCO thing is possible, writing naturally recursing code would become possible. I think that recur could still exist independent like what other said. On Jan 18, 2:55 am, Richard Newman wrote: > > Other people prefer having

Re: Good "refs" on concurrency?

On Jan 18, 5:48 pm, David Beckwith wrote: > And btw, thanks Erik, Gene, and Abhi for your suggestions!  I'll look > at those. > David :) A few others, while you're at it: - Chap 2 of Houser/Fogus' "joy of Clojure" MEAP, - the "time, state, identity" talks e.g. http://wiki.jvmlangsummit.com/Ke

Re: deftype implementing methods with multiple argument lists

You can include multiple definitions of the same method, with different arguments, in a deftype. (deftype Foo [f] (bar [x] ...) (bar [x y] ...)) Don't know if that's intended, but it works. -SS On Jan 19, 3:50 pm, Konrad Hinsen wrote: > Protocols permit the declaration of functions with mul

Re: Correct mapping from Lisp to Clojure?

On Jan 18, 10:33 pm, Richard Newman wrote: > >> defvar > >> defparamater > > def, pretty much. (Some of the niceties of CL semantics don't really   > apply.) > > >> let* > > let. > > >> defconstant > > No equivalent. Use def and allow the JIT to do the "is this constant?"   > work. > > >> mapcar >

deftype implementing methods with multiple argument lists

Protocols permit the declaration of functions with multiple argument lists: (defprotocol FooP (bar [x] [x y] "")) It is straightforward to implement those using extend or extend-type: (deftype Foo [f] :as this) (extend-type ::Foo FooP (bar ([x] (:f x)) ([x y] [(:f x) y])))

Re: Some vars protected from binding?

Jacek Generowicz writes: > (def ++ +) > (defn foo-core [a b] (+ a b)) > (defn foo-user [a b] (++ a b)) > (binding [+ - > ++ -] > [(foo-core 1 1) (foo-user 1 1)]) > > Gives the result: > > [2 0] > > which suggests that some vars are immune to binding. > > Could someone please point

Re: how to "require" a library

If you add the jar as a Netbeans lib, Enclojure should do the work for you. Make sure to start a project REPL. On Jan 19, 2:37 pm, Boštjan Jerko wrote: > On 19.1.2010, at 19:53, Richard Newman wrote: > > > > > Make sure you explicitly include clojure-twitter.jar on your classpath. The > > conta

Re: Correct mapping from Lisp to Clojure?

On Jan 19, 12:33 am, Laurent PETIT wrote: > Hello, > > Just one thought, since I also tried to convert some emacs lisp code > to clojure recently ( paredit.el ). > > It seemed a good idea at first, something like : > > 1. I write a one-to-on conversion, using the same idioms that are used > in CL

Re: how to "require" a library

On 19.1.2010, at 19:53, Richard Newman wrote: >> > > Make sure you explicitly include clojure-twitter.jar on your classpath. The > containing directory is not sufficient. > > How you do that depends on how you're invoking Clojure, and which OS you're > using. Hi Richard, Thanks for the repl

Re: stripping parenthesis

thanks all! On Jan 19, 2:06 pm, kyle smith wrote: > http://groups.google.com/group/clojure/browse_thread/thread/806ebb1cb... -- 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

Re: stripping parenthesis

http://groups.google.com/group/clojure/browse_thread/thread/806ebb1cbe671969/82a25385a2a8a18d?lnk=gst&q=unflatten#82a25385a2a8a18d -- 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 p

Re: how to "require" a library

So I guess the twitter class is not found. As you can see I have some basic problems with classpath's and which library/class to import. Any recommendations how to tackle the issue? Make sure you explicitly include clojure-twitter.jar on your classpath. The containing directory is not suffi

Re: stripping parenthesis

On 19.01.2010, at 17:58, Scott wrote: one more question, what if one was to attempt the reverse, ie: ( 1 2 3 4 5 6 7 8 9 10 11 12 14 15 16 ) into ( 1 2 3 4 (5 6 7 8) ((9 10 11 12)) (((13 14 15 16))) ) There are certainly many ways to do it. Here is one: (defn insert [[f & r]] (if (empty? r

Re: stripping parenthesis

It's unorthodox, but... (apply concat (map (fn [coll f] (f coll)) (partition 4 (range 1 17)) (iterate (partial comp list) identity))) Sean On Jan 19, 11:58 am, Scott wrote: > gotta love well thought out libraries > > Thanks Laurent > > one more question, what if one was to attempt t

Re: stripping parenthesis

gotta love well thought out libraries Thanks Laurent one more question, what if one was to attempt the reverse, ie: ( 1 2 3 4 5 6 7 8 9 10 11 12 14 15 16 ) into ( 1 2 3 4 (5 6 7 8) ((9 10 11 12)) (((13 14 15 16))) ) thanks, sorry just getting started with clojure/lisp On Jan 19, 11:51 am, La

Re: ANN: dgraph 1.0, a dependency graph library for Clojure

On Jan 18, 2:14 am, mac wrote: > Updating stuff in the map became a little bit of a hassle so I made > versions of assoc-in and update-in that work on dgraphs. Here they are > in case anyone else is interested: > > (defn assoc-node >   [dgraph m ks v] >   (dgraph m (assoc-in (dgraph m) ks v))) > >

Re: stripping parenthesis

Maybe you're in quest of http://richhickey.github.com/clojure-contrib/seq-utils-api.html#clojure.contrib.seq-utils/flatten ? HTH, -- Laurent 2010/1/19 Scott : > i am utilizing parenthesis to represent a tree structure within a > genetic algorithm > > I am trying to write a function that can str

Re: Some vars protected from binding?

Hi, On Jan 19, 1:45 pm, Jacek Generowicz wrote: > (def ++ +) > (defn foo-core [a b] (+  a b)) > (defn foo-user [a b] (++ a b)) > (binding [+  - >           ++ -] >   [(foo-core 1 1) (foo-user 1 1)]) > > Gives the result: > >     [2 0] > > which suggests that some vars are immune to binding. > >

stripping parenthesis

i am utilizing parenthesis to represent a tree structure within a genetic algorithm I am trying to write a function that can strip all parenthesis such that I can perform crossovers/mutations on the permutation. Ex. ( 1 2 3 4 (5 6 7 8) ((9 10 11 12)) (((13 14 15 16))) ) into ( 1 2 3 4 5 6 7 8

JUnit XML output doesn't conform maven surefire-report plugin schema

XML output produced using (with-junit-output) has no attributes which are mandatory for schema that is used by surefire-report for HTML generation. has no attribute "type". It can be easily added to clojure.test.junit.clj:116 (start-element tag false (assoc (if message {:message message} {}) :typ

Some vars protected from binding?

(def ++ +) (defn foo-core [a b] (+ a b)) (defn foo-user [a b] (++ a b)) (binding [+ - ++ -] [(foo-core 1 1) (foo-user 1 1)]) Gives the result: [2 0] which suggests that some vars are immune to binding. Could someone please point me to the chapter and verse describing this? Th

Re: Correct mapping from Lisp to Clojure?

On 19 Jan, 08:33, Laurent PETIT wrote: > Hello, > > Just one thought, since I also tried to convert some emacs lisp code > to clojure recently ( paredit.el ). > > It seemed a good idea at first, something like : > > 1. I write a one-to-on conversion, using the same idioms that are used > in CL in

Re: Correct mapping from Lisp to Clojure?

On 19 Jan, 06:12, Sean Devlin wrote: > Did you watch Rich's video "Clojure for Lispers"?  That might help > > (The only one I can answer for sure is that Clojure's let is CL's > let*) Ah! that's very handy, I too was wondering how to do a let*! It's certainly expressively useful to have it as t

how to "require" a library

Hello! I'm absolute beginner in the field of functional programming and have some experience with Java, but it was long time ago. Since I need to work with JVM and want to learn functional programming I've decided to use and learn Clojure. Now to my problem: I'm writing a small twitter client

Re: Correct mapping from Lisp to Clojure?

Hello, Just one thought, since I also tried to convert some emacs lisp code to clojure recently ( paredit.el ). It seemed a good idea at first, something like : 1. I write a one-to-on conversion, using the same idioms that are used in CL in clojure 2. I write a bunch of non-regression tests 3. I