Re: Clojure STM vs Java Locks dissertation help data structure database connection

I am new with Functional Programmin and Clojure, so I am not really sure about what to do. Instead of connecting to a database, can I do this? 1 - define initial data, like a matrix of Refs 1 - generate random operations to execute: [ random-account-source-id(0, N_MAX) , random-account-destinat

(.containsKey {:one 1} :one) throws Exception

Hi guys, I am wondering why this does not work: (.containsKey {:one 1} :one) ;=> ClassCastException clojure.lang.PersistentArrayMap cannot be cast to clojure.lang.PersistentHashMap The map is a: (class {:one 1}) ;=> clojure.lang.PersistentArrayMap And a PersistentArrayMap does have a containsKe

Re: (.containsKey {:one 1} :one) throws Exception

not sure why, but this works: user=> (.containsKey ^clojure.lang.Associative {:one 1} :one) true 2012/3/3 Alf Kristian Støyle > Hi guys, I am wondering why this does not work: > > (.containsKey {:one 1} :one) > ;=> ClassCastException clojure.lang.PersistentArrayMap cannot be cast to > clojure.

Re: (.containsKey {:one 1} :one) throws Exception

Looks like the type inferencer inserts a cast to PersistentHashMap, where it should only cast to clojure.lang.Associative (the interface on which .containsKey is defined). Also, the type inferencer picks up the wrong type from the literal, but that wouldn't matter, if it would always cast to the mo

Re: checking if a method is defined

Also keep in mind, that in (.something obj), the compiler doesn't see a call to .method, but the whole thing is desugared into a call to the dot form: (. obj something). Since . is a special form, it is always defined. So when trying to analyze a call to the dot special form, keep in mind that the

clojure url exception

Is this a reader bug? ;user=> *clojure-version* {:major 1, :minor 4, :incremental 0, :qualifier "alpha5"} ;user=> (.getProtocol #java.net.URL["file:/home/hara/dj/usr/src/clojurescript/src/cljs/cljs/core.cljs"]) MalformedURLException no protocol: /home/hara/dj/usr/src/clojurescript/src/cljs/cljs/

Re: How I can use InteractionEvent in clojure?

Any advice? -- 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 em

Re: lein run and standard input (*in*) with read-line

Tim Cross writes: > My guess is that lein run does something different wrt *in*, but I've > no idea what and cannot find anything obvious in the docs. Try using "lein trampoline run" to get around the subprocess issues with stdin. -Phil -- You received this message because you are subscribed

clojurescript collection vs sequential problem

I noticed in clojurescript/src/clj/cljs/closure.clj that the function build calls -compile and binds the return value to compiled. compiled is then checked if it is a collection, and if not, wraps it in a []. The problem is sometimes compiled is a hash-map, and this counts as a collection. In my

Re: clojure url exception

I'm not sure what it is, but here is another transcript that may provide additional clues, and with a slightly later version of Clojure: user=> (clojure-version) "1.4.0-beta1" user=> (def x #java.net.URL["file:/home/hara/dj/usr/src/clojurescript/src/cljs/cljs/core.cljs"]) #'user/x user=> x # use

Re: clojure url exception

And another transcript that might help narrow this down: user=> (clojure-version) "1.4.0-beta1" user=> (def x #java.net.URL["file:///home/hara/dj/usr/src/clojurescript/src/cljs/cljs/core.cljs"]) #'user/x user=> (printf "(class x)=%s x='%s'\n" (class x) x) (class x)=class java.net.URL x='file:/ho

Re: Looking to help out with an open source project...

I'm a vim guy. :P Maybe I could work on a port for vim or something. I've never written a vim plugin though. On Mar 2, 5:04 pm, Moritz Ulrich wrote: > I might have something for you. It's a small personal (and currently > unpublished) project involving Emacs, Clojure and ClojureScript. It > isn't

ANN Frinj 0.1.1

Frinj is a practical unit-of-measure calculator DSL for Clojure. Key features; * Tracks units of measure through all calculations allowing you to mix units of measure transparently * Comes with a HUGE database of units and conversion factors * Inspired by the Frink project (http://futureboy.us/fr

Re: lein run and standard input (*in*) with read-line

Hi Phil, thanks, lein trampoline run seems to get around the problem. BTW, spotted a minor error in the .lein/bin/swank-clojure script. The CLASSPATH setting at the top of the script appears to have a hard coded path instead of one based on $HOME. For example, after installing the swank plugi

Performance of thread-local binding

If I understand Clojure's dynamic vars correctly, in a context where some var *bar* is already thread-bound, the following code: (binding [*bar* new-val] (foo)) is semantically equivalent to: (let [old-val *bar*] (set! *bar* new-val) (try (foo) (finally (set! *bar* ol

Re: How I can use InteractionEvent in clojure?

On Sat, Mar 3, 2012 at 12:47 PM, Antonio Recio wrote: > Any advice? > This is an odd library. My first shot would be to try something like: (def myCallback (fn [] (let [t (vtkTransform.)] (.GetTransform t) (-> boxWidget .GetProp3D (.SetUserTransform t) ; A