Re: RC 16: Last chance to test against Clojure 1.5 before it ships

Stuart Halloway writes: > If you care about Clojure 1.5 compatibility for your codebase, please > test it against RC 16 as soon as possible. My code using tons of protocols, some deftypes, and the new reducers here and there still compiles, runs, and all tests pass. That said, I've always used

:use an entire namespace full of protocols or stick with :require?

I know that using a bare :use in the ns macro is generally frowned upon as it provides no hints about what is actually being used... However, I 've got 2 namespaces 'abstractions.clj' and 'concretions.clj'...concretions.clj will eventually use all the protocols defined in abstractions.clj...at

Help on implementing a simple java (openNLP) EventStream interface

Hi All, I want to turn a clojure sequence into an 'EventStream' java interface in clojure (see http://opennlp.apache.org/documentation/1.5.2-incubating/apidocs/opennlp-maxent/index.html). Basically this is an object that implements next() and hasNext() methods. I know this can be done with p

Re: Belgium Clojure Meetup

Hi there, I might join if the event takes place in Ghent. grtz Op maandag 11 februari 2013 23:11:36 UTC+1 schreef Thomas Goossens het volgende: > > *With some fellow Belgian clojurians (Frederik De > Bleser& Wim De Clerq) I’m planning to organise a > Clojure meetup

Re: :use an entire namespace full of protocols or stick with :require?

I don't like :use because I can't tell where things come from. require :refer [...] is good is you don't want the prefix. On Friday, 15 February 2013 00:26:50 UTC+11, Jim foo.bar wrote: > > I know that using a bare :use in the ns macro is generally frowned upon > as it provides no hints abou

Re: Help on implementing a simple java (openNLP) EventStream interface

How about having your methods access an atom provided in a closure like it's done here: http://kotka.de/blog/2010/03/proxy_gen-class_little_brother.html U On 14 February 2013 13:58, Joachim De Beule wrote: > Hi All, > > I want to turn a clojure sequence into an 'EventStream' java interface in >

Re: Help on implementing a simple java (openNLP) EventStream interface

Thanks! So you mean like this (assuming some function elt->event): (defn seq->event-stream [input-seq] (let [remaining (atom input-seq)] (proxy [EventStream] [] (next [] (let [current (first @remaining)] (swap! remaining rest) (elt->event current

Re: Help on implementing a simple java (openNLP) EventStream interface

Without testing or anything that looks reasonable enough. I'm sure that there are plenty caveats around infinite seqs, etc. though. On 14 February 2013 14:22, Joachim De Beule wrote: > Thanks! So you mean like this (assuming some function elt->event): > > (defn seq->event-stream [input-seq] >

How to set the value of a static variable in a java factory class from clojure?

Hi All, I know how to call static java methods such as the ones defined here: http://grepcode.com/file/repo1.maven.org/maven2/org.apache.opennlp/opennlp-maxent/3.0.2-incubating/opennlp/maxent/GIS.java, e.g. trainModel(...). However, before I call this method I want to change the value of the

Re: How to set the value of a static variable in a java factory class from clojure?

Haven't looked at the code, but `set!` should work. ~BG Sent from phone. Please excuse brevity. On 14 Feb 2013 21:30, "Joachim De Beule" wrote: > Hi All, > > > I know how to call static java methods such as the ones defined here: > http://grepcode.com/file/repo1.maven.org/maven2/org.apache.openn

Re: how to automatically and idiomatically add newlines to clojure code in emacs

@Feng It doesn't clean up the way John is looking to clean some code like this: (defun func1 [a b c d] (func5 (let [f (func3 c)] (func2 a b f)) (let > [e 5] (func4 c d e > On Tue, Feb 12, 2013 at 9:11 AM, Feng Shen wrote: > > (defun indent-buffer () > (interactive) > (indent-region (p

Re: how to automatically and idiomatically add newlines to clojure code in emacs

C-u M-x indent-pp-sexp On Thu, Feb 14, 2013 at 6:06 PM, Mayank Jain wrote: > @Feng > It doesn't clean up the way John is looking to clean some code like this: > > >> (defun func1 [a b c d] (func5 (let [f (func3 c)] (func2 a b f)) (let >> [e 5] (func4 c d e > > > > > On Tue, Feb 12, 2013 at 9:

Google Summer of Code 2013

Hello, all, It's official: Google Summer of Code 2013 is on. Last year, Clojure was able to get four students who worked on projects like Typed Clojure, Clojure on Android, Clojure and Lua, and Overtone, and I'd love to see Clojure be a mentoring organisation again this year. I have created a

proper way to override clojure.core functions without getting warning/error

Let's say I want to override clojure.core/sorted? (ns random.learning.clojure.overridex (:refer-clojure :exclude [sorted?])) (defn sorted? [coll] {:pre [ (coll? coll)]} (clojure.core/sorted? coll)) I'm using Eclipse+counterclockwise, so loading this namespace(Ctrl+Alt+L) first time gives n

Re: Google Summer of Code 2013

WOOT! I'm of course more than happy to mentor any projects around ClojureScript, core.logic, and core.match. David On Thu, Feb 14, 2013 at 1:03 PM, Daniel Solano Gómez wrote: > Hello, all, > > It's official: Google Summer of Code 2013 is on. > > Last year, Clojure was able to get four student

Re: Help on implementing a simple java (openNLP) EventStream interface

Also It looks like you could use reify instead of proxy here, it would improve performance. http://clojuredocs.org/clojure_core/clojure.core/reify - Max On Thursday, February 14, 2013 3:26:02 PM UTC+1, Ulises wrote: > > Without testing or anything that looks reasonable enough. I'm sure that

Why is this so difficult?

Having studied Lisp decades ago I like the look of Clojure a lot. But as a complete newbie when it comes to modern software development, I'm exasperated by what strikes me as a very difficult and primitive set of tools to get started. I keep seeing "Leinigen, Leinigen", and the Leinigen homepag

Re: proper way to override clojure.core functions without getting warning/error

The problem is that your first namespace defines 'sorted?' and your second namespace just uses the namespace, thus overriding 'sorted?'. You have two options here. Your biggest project is that you're using ':use'. Use ':require' instead. Something like `(:require [random.learning.clojure.overri

Re: Why is this so difficult?

Can you explain a bit more? What do you find difficult about Leinigen? Thanks, Timothy On Thu, Feb 14, 2013 at 11:42 AM, BJG145 wrote: > Having studied Lisp decades ago I like the look of Clojure a lot. But as a > complete newbie when it comes to modern software development, I'm > exasperated

Re: Why is this so difficult?

Well, leiningen isn't just the best way to get started with Clojure, it's the best way to install and work with Clojure. Leiningen isn't simply a beginners tool. It's the toolbox for the Clojure programmer. Regardless of what IDE or editor you use, you're still going to want Leiningen if you're

Re: Library naming etiquette?

Thanks for the replies. I'm not the owner of what the official namespace should be, so perhaps I'll just clj-xxx and I can always stop using that and change with a major release milestone. Clearly too much thought has gone into this already, and there doesn't appear to be a problem with people

Re: Help on implementing a simple java (openNLP) EventStream interface

Thanks for the tip Max, so you mean like this? (defn cases->event-stream [cases features-extractor labeler] (let [remaining (atom cases)] (reify opennlp.model.EventStream (next [this] (let [current (first @remaining)] (swap! remaining rest) (ca

Re: proper way to override clojure.core functions without getting warning/error

Thank you for replying. I see that using :require like (:require [random.learning.clojure.overridex :as o]) also means I have to use sorted? as "o/sorted?" else the clojure.core/sorted? is used or using (:require [random.learning.clojure.overridex]) means I've to use "random.learning.clojure.ove

Re: Clojure, Heroku and the dreaded R10 Boot Timeout Error

Leonardo Borges writes: > Could it be related to new relic? That's the only external service - > besides downloading jars - that the app tries to reach upon starting > up. If your app is downloading jars on startup that's a bad sign; all your dependencies should be downloaded during git push. If

Re: Why is this so difficult?

What I find exasperating about Leinigen is that I've got a degree in computer science, decades of experience in IT support, and I still haven't been able to get it working yet. :-( Package Manager? Curl? What? OK, look, I'm not very bright. It took me years to get my head round OOP because al

Re: Why is this so difficult?

I think I have an idea of where your coming from. Leiningen does lots of wonderful and important things but coming from the outside (or at least from certain "outsides") it's not even clear why you'd want to do a lot of those things, and it doesn't do some of the things that seem most essential

protocol implementation delegating to protocol extension doesn't compile

let me explain with an example: ;;in some namespace x (defprotocol IStemmable (stem [this token] [this token lang]) (getRoot [this token dictionary])) (defprotocol IDistance (getDistance [this s1 s2] [this s1 s2 m-weight])) ;;in some namespace y that refers all vars from x (extend-type Strin

Re: Why is this so difficult?

The easiest, when anything becomes a road block, is simply tryclj.comcombined with 4clojure.com. Those two alone can give you enough to work with and chew on while you become more familiar with clojure and setup a proper environment (including Leiningen). Another simplification is to use lei

new, macros and "Can't eval locals"

The goal is to can write this form: => *(let [a java.lang.RuntimeException] (new a) )* CompilerException java.lang.IllegalArgumentException: Unable to resolve classname: a, compiling:(NO_SOURCE_PATH:2:3) attempt with macro: =>* (defmacro mew [cls & restt] `(new ~(eval cls) ~@restt)

Re: Why is this so difficult?

Thanks for the suggestions - this really isn't an anti-Leiningen thread, I'm just impatient that I don't understand it yet. But I'll give it another crack and post some more coherent queries when I get stuck...:-) -- -- You received this message because you are subscribed to the Google Group

[GSoC Idea] cljs layer/dsl over express js

Just throwing ideas. Feel free to shoot it down if you folks think its not worth it :). Also, I'm a student, and would actually be participating in GSOC, so this is more of a shoutout for possible mentors, if you guys think the project makes sense. The Problem: 1. cljs doesn't yet have a library/f

Re: new, macros and "Can't eval locals"

On Feb 14, 2013, at 1:27 PM, AtKaaZ wrote: > The goal is to can write this form: > => (let [a java.lang.RuntimeException] > (new a) > ) > CompilerException java.lang.IllegalArgumentException: Unable to resolve > classname: a, compiling:(NO_SOURCE_PATH:2:3) > > attempt with macro: > =

Re: new, macros and "Can't eval locals"

thanks for the reply, => *(defmacro mew [cls & args] `(new ~cls ~@args))* #'runtime.q/mew =>* (let [a java.lang.RuntimeException] (mew a) )* CompilerException java.lang.IllegalArgumentException: Unable to resolve classname: a, compiling:(NO_SOURCE_PATH:2:3) that would be the equiva

Re: new, macros and "Can't eval locals"

I figure since new is expecting a class at compiletime, we can never pass it a class that we evaluate at runtime(those locals), ergo => impossible to macro around "new" like that like this => impossible: *(let [a java.lang.RuntimeException] (macro-that-eventually-calls-new a))* maybe som

Re: new, macros and "Can't eval locals"

ok looks like it's not impossible: => *(defmacro mew [cls & restt] (let [c a] `(eval (new ~a ~@restt)) ) )* #'runtime.q/mew => *(let [a java.lang.RuntimeException] (mew a) )* # On Thu, Feb 14, 2013 at 10:53 PM, AtKaaZ wrote: > I figure since new is expecting a

Re: new, macros and "Can't eval locals"

ah I tricked myself... I used "~a" inside the macro instead of "~c" or "~cls" so back to still impossible => (defmacro mew [cls & restt] (let [c cls] `(eval (new ~c ~@restt)) ) ) #'runtime.q/mew => (let [a java.lang.RuntimeException] (mew a) ) CompilerException j

Re: new, macros and "Can't eval locals"

and I forgot to mention that I already had another "a" defined => a java.lang.RuntimeException hence why it worked On Thu, Feb 14, 2013 at 11:01 PM, AtKaaZ wrote: > ah I tricked myself... I used "~a" inside the macro instead of "~c" or > "~cls" > so back to still impossible > > => (defmacro m

Re: new, macros and "Can't eval locals"

Yes, since this is runtime you should use reflection. (let [a java.lang.RuntimeException] (.newInstance a)) Alternatively, you can use eval: (let [a java.lang.RuntimeException] (eval (list 'new a))) On Thu, Feb 14, 2013 at 4:53 PM, AtKaaZ wrote: > I figure since new is expecting a class

Re: new, macros and "Can't eval locals"

Thank you! I didn't know you could do .newInstance oh that's a nice trick with eval and list 'new So it's not impossible after all, thanks Aaron! Here's what I got from what you said: => *(defmacro mew [cls & restt] `(eval (list 'new ~cls ~@restt)) )* #'runtime.q/mew => *(let [a java.

Re: Why is this so difficult?

This might help: 1. create a new project in the current directory "lein new" 2. Edit project.clj and add this plugin [lein-idea: "1.0.1"] 3. run this to create idea project files "lein idea" 4. Open the project in intellij Josh On Fri, Feb 15, 2013 at 12:29 AM, BJG145 wrote: >

Re: [GSoC Idea] cljs layer/dsl over express js

Clojure has compojure ... which is a sinatra like web framework and you can create a new project using"lein new compojure" and start creating your request handler functions from there ... Just like in express. If you want a jade equivalent... you can use hiccup . Josh. On Fri, Feb 15

Re: Why is this so difficult?

On Feb 14, 2013, at 3:50 PM, Alex Walker wrote: > The easiest, when anything becomes a road block, is simply tryclj.com > combined with 4clojure.com. > > Those two alone can give you enough to work with and chew on while you become > more familiar with clojure and setup a proper environment (

Re: [GSoC Idea] cljs layer/dsl over express js

But compojure isn't in cljs, so you have to use the jvm. A wrapper around express would mean you could run it on node. On Thu, Feb 14, 2013 at 5:35 PM, Josh Kamau wrote: > Clojure has compojure ... which is a sinatra like web framework and > you can create a new project using"lein new

Pretty-printing `lein test`s output?

First of all, I must say I'm new to testing in Clojure. My current workflow is pretty simple: * Edit + save the tests (which use clojure.test - I hear Midje is better though) in emacs * Run `lein test` in the terminal * recur But then the printed values (triggered when e.g. an `are` case fails)

How to bind an Aleph TCP server to a TCP v4 port?

I started to learn Clojure a couple of days ago. I was trying with some Aleph TCP echo server examples but I can not get the server to bind to a tcp v4 port. The server only binds to a tcp v6 port by default. Here my project file: (defproject clj-echo-server "0.1.0-SNAPSHOT" :description

Re: Why is this so difficult?

You are certainly not alone. Learning the language and concepts is very easy for me, but the sysadmin stuff to get set up is so much harder. Believe it or not, I had much more trouble with installing core.logic than understanding it. It doesn't end either, you bump into more problems once you t

Looping and accumulation

I have a loop over a function that is accumulating a list of database keys for later use. But it is primarily doing other processing and returning a collection of processed/filtered records. I'd normally just PUSH the ids and records onto a list in Common Lisp, or even LOOP... COLLECT into 2

Re: [GSoC Idea] cljs layer/dsl over express js

I responded to Omer on Twitter, it's probably worth looking into existing projects like Bodil Stokke's Dog Fort first - https://github.com/bodil/dogfort David On Thu, Feb 14, 2013 at 5:48 PM, Tamreen Khan wrote: > But compojure isn't in cljs, so you have to use the jvm. A wrapper around > expr

Re: Why is this so difficult?

I never tried out core.logic. This is how I just got it "installed" in less than a minute. Really no magic here: lein new foo; cd foo # google "core.logic", grab the dependencies vector ([org.clojure/core.logic "0.7.5"]), attach it to your project.clj lein repl (use 'clojure.core.logic)(run* [q

Re: Why is this so difficult?

Sure, but you have assumed that you have a perfectly working clojure environment set up. *That* is the hard part. On Friday, February 15, 2013 12:19:34 AM UTC+1, vemv wrote: > > I never tried out core.logic. This is how I just got it "installed" in > less than a minute. Really no magic here: > >

Re: Why is this so difficult?

If this does not work for you, you can help everyone by opening an issue at the Leiningen bug tracker: Make sure java and curl are correctly installed Run the corresponding (unix or Windows) lein install script Now you should be able to run lein repl, lein new, etc On Friday, February 15, 2013 1

Re: Looping and accumulation

You want either `reduce` or `loop` as the control flow construct, and `conj` for appending items to a collection (without resorting to mutability). Have a look at them, they're pretty well covered in the available books, tutorials etc. Hope it helps - Victor On Friday, February 15, 2013 12:11

poker-hands

A little library to score poker hands: https://github.com/jamesmacaulay/poker-hands Feedback would be great! -- -- 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 m

Re: Why is this so difficult?

Hi BJG145, I absolutely see where you're coming from. And in fairness, it did take a me a long and arduous time to get a really proficient development environment. I happen to really like expressive power. So when I came from a Java / OO development paradigm, it didn't bother me that I had to lear

Re: Looping and accumulation

Look at the first example here: http://clojuredocs.org/clojure_core/clojure.core/transient It should inspire you. Transient structures make this kind of loop run faster but as you lay out your first iteration just toss this aside (and the xxx! version of conj and cie). Luc P. > I have a loop

Re: Looping and accumulation

On Feb 14, 2013 6:11 PM, "Jonathon McKitrick" wrote: > I have a loop over a function that is accumulating a list of database keys for later use. But it is primarily doing other processing and returning a collection of processed/filtered records. As you come from Common Lisp, where all standard l

Re: Google Summer of Code 2013

I would love to improve upon core.match On Thursday, February 14, 2013 1:10:29 PM UTC-5, David Nolen wrote: > > WOOT! > > I'm of course more than happy to mentor any projects around ClojureScript, > core.logic, and core.match. > > David > > > On Thu, Feb 14, 2013 at 1:03 PM, Daniel Solano Gómez

Re: Why is this so difficult?

FWIW, I've been using Clojure seriously for a couple of years now and never really used Leiningen. I've found that Eclipse with the awesome "Counterclockwise" plugin does everything that I need. This is also pretty easy for newcomers (assuming they know Eclipse) - just install the Counterclock

Re: Pretty-printing `lein test`s output?

Hi Victor, I've developed something I use on my own projects to compare pretty printed test failure output. The final piece for it would be to incorporate its test failure report diffing into a leiningen plugin that wrapped lein test. https://github.com/AlexBaranosky/gui-diff On Thu, Feb 14, 201

Re: Why is this so difficult?

vemv, here is a file describing my Clojure install experience: https://www.dropbox.com/s/ln2ek5f5n47qnl1/clojureinstall.odp How should I continue? And where would a beginner find that information? Hopefully this is taken in good humor, this is meant as an illustration from a beginners' point of

Re: Why is this so difficult?

You might, BJG145, also profit by taking a look at clojurewiki.org - I'm listing there all resources I can find. Good luck! 2013/2/15 Jules > vemv, here is a file describing my Clojure install experience: > https://www.dropbox.com/s/ln2ek5f5n47qnl1/clojureinstall.odp > > How should I continue?

Re: Why is this so difficult?

On Thu, Feb 14, 2013 at 6:56 PM, Jules wrote: > vemv, here is a file describing my Clojure install experience: > https://www.dropbox.com/s/ln2ek5f5n47qnl1/clojureinstall.odp > > How should I continue? And where would a beginner find that information? The problem is the Clojure world, for the most

Re: Why is this so difficult?

2013/2/15 Konrad Scorciapino > You might, BJG145, also profit by taking a look at clojurewiki.org - I'm > listing there all resources I can find. > You may want to add clojure-doc.org, which is the most complete, contributor friendly source of documentation guides (including guides on the ecosys

Re: [ANN] analyze 0.3.0 - Hygienic transformation

It looks as if https://github.com/jonase/kibit/ is a lint/check style tool that only reads the source code, this limits its utilization: "Kibit reads source code without any macro expansion or evaluation. A macro can t

Re: [ANN] analyze 0.3.0 - Hygienic transformation

On Friday, February 15, 2013 6:19:00 AM UTC+2, ronen wrote: > > > It looks as if https://github.com/jonase/kibit/ is a lint/check style > tool that only reads the source code, this limits its utilization: > > "Kibit > reads

Re: Pretty-printing `lein test`s output?

On Thu, Feb 14, 2013 at 3:06 PM, vemv wrote: > But then the printed values (triggered when e.g. an `are` case fails) are > fairly illegible, especially when big. > > Can I get the test runner to pprint its output? Is my workflow improvable > anyway? I use lein-difftest for this: https://github.co

Re: Pretty-printing `lein test`s output?

You'll find your workflow greatly improved by using nrepl (or slime/swank) and running tests directly from Emacs - and that applies whether you're using bare clojure.test, midje or expectations. I use expectations for testing and expectations-mode in Emacs. I can run an individual namespace's test

Re: protocol implementation delegating to protocol extension doesn't compile

Hi Jim: I think the problem is that you are actually calling the *getDistance *protocol function with only 2 arguments in the line in bold below: (defrecord LevenshteinDistance [] IDistance (getDistance [_ s1 s2] *(getDistance s1 s2)) ;; <- Calling a getDistance function with 2 arg

Re: Why is this so difficult?

I feel your pain BJG145, when I started learning Clojure I used Clooj to be able start playing with the language, it provides the basics, a REPL, a text area for the code and a tree of files and folder for the current project. It's simple and get's you

Re: Why is this so difficult?

Well the first thing you assume is that project pages should be giant download buttons, and therefore the exposed content in those pages is not worth reading/understanding. For instance you can find the answer to the question posed in the slide 19 in slide 7. Just imagine if every single open sour

Re: [ANN] analyze 0.3.0 - Hygienic transformation

Jonas already has another project which uses analyze https://github.com/jonase/eastwood On Fri, Feb 15, 2013 at 12:19 PM, ronen wrote: > > It looks as if https://github.com/jonase/kibit/ is a lint/check style > tool that only reads the source code, this limits its utilization: > > "Kibit > read