ClojureCLR in production ?

I am writing a server in Java/Clojure. It has a C# client. As the protocol between them becomes more complex (remote objects etc) I am looking at writing a client-side library to support comms with the server. It occurred to me that instead of writing this in C# I could perhaps reuse a lot of my

gen-class and state...

I only have a brief posting window this morning (I have to leave for work) so have not researched this as well as I should before coming to the list - so please forgive if this is a bit lame... Should I still be using gen-class to achieve link time compatibility with Java ? If so, why am I constr

Re: gen-class and state...

On Wed, Mar 23, 2011 at 3:43 AM, Jules wrote: > I only have a brief posting window this morning (I have to leave for > work) so have not researched this as well as I should before coming to > the list - so please forgive if this is a bit lame... > > Should I still be using gen-class to achieve lin

Jesus, how the heck to do anything?

Short version: How do I just open an editor, type in some Clojure code, save it in a file, and then run it? Long version: Okay, I'm very new to Clojure. But I'm not a Java programmer (don't want to be). I'm not used to all this complexity just to do something simple. What I want to do is the

Re: Jesus, how the heck to do anything?

I suggest skipping right to leiningen: https://github.com/technomancy/leiningen Once you spend a few minutes creating a project template, you can then run a simple command to create a jar file and run it. Tim On Mar 23, 1:50 am, ultranewb wrote: > Short version:  How do I just open an editor,

Re: Jesus, how the heck to do anything?

Have a look at leiningen. Its a build tool that manages your project environment, allows you to compile your code to a jar etc. http://www.assembla.com/wiki/show/clojure/Getting_Started_with_Leiningen https://github.com/technomancy/leiningen/blob/master/TUTORIAL.md lein run -m org.you.main will

Re: Jesus, how the heck to do anything?

On Wed, Mar 23, 2011 at 8:50 AM, ultranewb wrote: > Short version: How do I just open an editor, type in some Clojure > code, save it in a file, and then run it? > Open a new file hello.clj in your current directory. Type in (println "hello world"), save and close. Run with java -jar /path/to

Re: Jesus, how the heck to do anything?

After you have lein installed, give La Clojure a try. It's the best IDE plugin I've found, and runs with InteliJ. You can do lein pom And lein will create a project file for you that you can open with La Clojure. Timothy On Wed, Mar 23, 2011 at 7:25 AM, Stefan Sigurdsson wrote: > On Wed, Mar 2

Extra params for a handler inside Ring's wrap-params

Hi! Routing, using ring.middleware.params and net.cgrand.moustache: (def tlog-app-handler (app ["admin" &] {:get (app ...snip...) :post (app wrap-params [[path not-empty] &] submit-article)} Thanks to wrap-params, I can destructure request params within submit-article. Howe

Re: Jesus, how the heck to do anything?

I'll be damned - this worked. Really, there needs to be some prominent, easily-accessible guides for just dumb, ultra-basic stuff like this. I'm talking guides that assume the user has no knowledge of anything except "programming" and "editing" (I mean, I don't even know what the heck a "jar" fil

Re: Jesus, how the heck to do anything?

On Wed, Mar 23, 2011 at 8:11 AM, ultranewb wrote: > I'll be damned - this worked.  Really, there needs to be some > prominent, easily-accessible guides for just dumb, ultra-basic stuff > like this.  I'm talking guides that assume the user has no knowledge > of anything except "programming" and "ed

Re: Jesus, how the heck to do anything?

MMhh it would be to hard to design a little guid for this. There are peole who don't know java and if you don't know what a jar file is you can understand java -jar. Somethink like that should be on the clojure website. Something like "A Letter to a new Clojure Developer". Posting stuff like thi

Re: Jesus, how the heck to do anything?

On Wed, Mar 23, 2011 at 9:11 AM, ultranewb wrote: > I'll be damned - this worked.  Really, there needs to be some > prominent, easily-accessible guides for just dumb, ultra-basic stuff > like this.  I'm talking guides that assume the user has no knowledge > of anything except "programming" and "ed

Re: Jesus, how the heck to do anything?

Yes, the issue isn't Clojure at all, it's Java. At any rate, thanks for feeling my pain. On Mar 23, 8:59 pm, Timothy Baldridge wrote: > On Wed, Mar 23, 2011 at 8:11 AM, ultranewb wrote: > > I'll be damned - this worked.  Really, there needs to be some > > prominent, easily-accessible guides fo

Re: fs - file system utilities for Clojure

Not so. Windows commands of the form "someProgram /some/path" often mistake /some/path for command-line switches (like Unix flags). I had real-world problems with this when trying to run a Rails app on Windows, because of the issue discussed here: http://www.ruby-forum.com/topic/50137 -- You

Re: Jesus, how the heck to do anything?

On Mar 23, 9:10 pm, Aaron Cohen wrote: > Did you search for getting started guides? If so and you didn't find > these, how can they be made easier to find? If you didn't find them, > why not? If you found them and they didn't help, why not? Yes, I had previously found all those guides, and much m

Re: Jesus, how the heck to do anything?

There is this genre of coming of age films that shows the hero getting beaten up by a bully, then a montage scene, then glorious victory. You are transitioning from the being beaten up by the bully scene to the montage scene. Time for lots of study =) On Wed, Mar 23, 2011 at 7:20 AM, ultranewb w

Re: Jesus, how the heck to do anything?

Did you follow the presentation of getting started with Eclipse+Counterclockwise, where the step by step guide explains how to setup your environment, and also how to create a hello world project ? 2011/3/23 ultranewb > On Mar 23, 9:10 pm, Aaron Cohen wrote: > > Did you search for getting start

Re: Jesus, how the heck to do anything?

Maybe try Leiningen? It is very nice, and it can take care of much of the Java hassle more or less behind the scenes. First download https://github.com/technomancy/leiningen/raw/master/bin/lein (Linux, OSX, Cygwin) https://github.c

Re: Jesus, how the heck to do anything?

On Mar 23, 9:43 pm, Laurent PETIT wrote: > Did you follow the presentation of getting started with > Eclipse+Counterclockwise, where the step by step guide explains how to setup > your environment, and also how to create a hello world project ? No I did not, because I didn't go the Eclipse route;

Re: Jesus, how the heck to do anything?

2011/3/23 ultranewb > On another note, I must say that the people here seem so friendly and > willing to help, thank goodness. If the posters here thus far are > indicative of the community at large, newbies coming in should be in > good hands. > They are -- You received this message because

Re: Jesus, how the heck to do anything?

> No I did not, because I didn't go the Eclipse route; rather, I tried > NetBeans and Emacs. That was my experience as well. I have tried many Eclipse based IDEs and they all were slow, buggy, and utterly worthless. So I didn't even try to touch Eclipse. Emacs is...wellemacs. Sorry, but when

Re: Jesus, how the heck to do anything?

On Mar 23, 10:15 pm, Timothy Baldridge wrote: > > No I did not, because I didn't go the Eclipse route; rather, I tried > > NetBeans and Emacs. > > That was my experience as well. I have tried many Eclipse based IDEs > and they all were slow, buggy, and utterly worthless. So I didn't even > try to

Re: Jesus, how the heck to do anything?

2011/3/23 Timothy Baldridge > > No I did not, because I didn't go the Eclipse route; rather, I tried > > NetBeans and Emacs. > > That was my experience as well. I have tried many Eclipse based IDEs > and they all were slow, buggy, and utterly worthless. So I didn't even > try to touch Eclipse. >

Re: Jesus, how the heck to do anything?

I wrote this post: http://blog.raynes.me/?p=48 for the precise purpose of showing newbies how to do what you want to do. One could make things a lot easier by writing an 'official' guide, assuming mine didn't meet that particular cut, along the lines of what I was aiming for and link it on http://c

Re: Jesus, how the heck to do anything?

Hi, I started with NetBeans and Enclojure and never used anything else. You can just go File/New Project, say this is going to be a Clojure project, give it a name. This will be your new active project in the projects tree on the left. There you go to Source Packages, down the tree to defpackage.c

Re: Jesus, how the heck to do anything?

> Emacs is...wellemacs. Sorry, but when I'm trying to learn a > language, remembering what spell to cast on the keyboard to get the > editor to run my script, was just a little too much to keep track of > at one time. > > You either love emacs or you don't. I used to be surprised that there we

Re: Jesus, how the heck to do anything?

> Type in (println "hello world"), save and close. > > Run with java -jar /path/to/clojure.jar hello.clj Very handy to know. It might be nice to have it on http://clojure.org/getting_started and/or on http://www.assembla.com/wiki/show/clojure/Getting_Started as "Running a Clojure script from the

Re: Jesus, how the heck to do anything?

> From what I've read and heard, TextMate would probably do exactly what I > want, but that only runs on Mac. Note there is a Windows version of textmate. http://www.e-texteditor.com/ And I've been able to use the bundles from the mac version in the windows version (for other languages at least

Re: Clojure in Small Pieces -- Literate Clojure

On Wed, 2011-03-23 at 00:31 -0700, Christian Schuhegger wrote: > Does a public repository exist (e.g. on github) where people could > clone the repository and potentially contribute? There is no repository. Everything (including all of the runnable source) is in a single book. To build a runni

Re: Jesus, how the heck to do anything?

On Wed, 23 Mar 2011 00:50:10 -0700 (PDT) ultranewb wrote: > Short version: How do I just open an editor, type in some Clojure > code, save it in a file, and then run it? > > Long version: Okay, I'm very new to Clojure. But I'm not a Java > programmer (don't want to be). I don't think you can

Re: fs - file system utilities for Clojure

On 23 March 2011 15:21, Jeffrey Schwab wrote: > Not so.  Windows commands of the form "someProgram /some/path" often mistake > /some/path for command-line switches (like Unix flags). Yes, working around this issue is discussed in the Wikipedia article I linked to. > I had real-world > problems w

Noob Question - Clojure number rounding

I'm trying to round a decimal number like 78.37898794 to say 78.379, without converting it to a string. I've been struggling to get this right and to get info on it. The closest that I've found is to use: format "%.3f". But format converts the number to a string. Not exactly what I'm trying to do.

Emacs with Lisp and Clojure.

Hi, I am a newbie to Ubuntu (10.10) and Emacs (23). I have been able to satisfactorily setup Eclipse and CCW, thanks to feedback from CCW user group members. However, I wanted to explore Clojure through Emacs. I have clojure-mode 1.7.1, slime and slime-repl 20100404 installed. I've also installed

Re: Noob Question - Clojure number rounding

Hi, a bit naive, but it seems to work… user=> (defn round [x & {p :precision}] (if p (let [scale (Math/pow 10 p)] (-> x (* scale) Math/round (/ scale))) (Math/round x))) #'user/round user=> (round 78.37898794) 78 user=> (round 78.37898794 :prec

Re: Noob Question - Clojure number rounding

Another way: (defn myround [x precision] (-> x (bigdec) (.movePointRight precision) (+ 0.5) (int) (bigdec) (.movePointLeft precision))) -- 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 Not

Re: Emacs with Lisp and Clojure.

On 03/23/2011 08:07 PM, mmwaikar wrote: Now when I try to install swank-clojure, I get the following message - File exists: /home/manoj/.emacs.d/elpa/clojure-mode-1.7.1/clojure- mode.el I vaguely recall that I had the same problem and solved it by simply moving the existing clojure-mode.el ou

Re: Emacs with Lisp and Clojure.

Thorsten Wilms writes: Hi, >> 1) There is no auto indentation (so when I go to the next line, after >> say (defn some[]), it starts with the first col. in this new line) > > Could be the job of Paredit (I'm not sure what does what, here). No, paredit has nothing to do with that. He probably go

Re: Noob Question - Clojure number rounding

You may also consider using java interop here. (defn round [s n] (.setScale (bigdec n) s java.math.RoundingMode/HALF_EVEN)) => (round 3 78.37898794) => 78.379 see http://download.oracle.com/javase/1.5.0/docs/api/java/math/BigDecimal.html Brenton On Mar 23, 11:08 am, JDuPreez wrote: > I'm t

Re: Deep recursion, continuation passing style, trampolining and memoization

@Mark, yeah, I meant using the bottom-up approach and passing that matrix as the accumulator. (I thought that I remembered seeing such an implementation in the goopy library, but when I looked today I didn't find any lev implementation at all.) @Christian, yes, I missed the point of your question.

Re: Noob Question - Clojure number rounding

On Mar 23, 8:07 pm, Meikel Brandmeyer wrote: > Hi, > > a bit naive, but it seems to work… > > user=> (defn round >          [x & {p :precision}] >          (if p >            (let [scale (Math/pow 10 p)] >              (-> x (* scale) Math/round (/ scale))) >            (Math/round x))) > #'user/r

Re: Jesus, how the heck to do anything?

On Mar 24, 1:11 am, Mike Meyer wrote: > > Long version:  Okay, I'm very new to Clojure.  But I'm not a Java > > programmer (don't want to be). > > I don't think you can get very far in Clojure without having to come > to grips with the Java infrastructure. It ain't Unix. Well, for me I guess it w

Re: Jesus, how the heck to do anything?

Nope, I get a . On Mar 23, 11:23 pm, wschnell wrote: > Hi, > > I started with NetBeans and Enclojure and never used anything else. > You can just go File/New Project, say this is going to be a Clojure > project, give it a name. This will be your new active project in the > projects tree on the le

Re: Jesus, how the heck to do anything?

On 23 Mar, 23:55, ultranewb wrote: > On Mar 24, 1:11 am, Mike Meyer wrote: > > > > Long version:  Okay, I'm very new to Clojure.  But I'm not a Java > > > programmer (don't want to be). > > > I don't think you can get very far in Clojure without having to come > > to grips with the Java infrastru

Re: Jesus, how the heck to do anything?

On Mar 23, 7:10 am, Aaron Cohen wrote: > http://en.wikibooks.org/wiki/Clojure_Programming/Getting_Started > [...] > > Did you search for getting started guides? If so and you didn't find > these, how can they be made easier to find? If you didn't find them, > why not? If you found them and they di

Re: Jesus, how the heck to do anything?

On Wed, 23 Mar 2011 15:55:51 -0700 (PDT) ultranewb wrote: > On Mar 24, 1:11 am, Mike Meyer wrote: > > > Long version:  Okay, I'm very new to Clojure.  But I'm not a Java > > > programmer (don't want to be). > > > > I don't think you can get very far in Clojure without having to come > > to grips

Re: gen-class and state...

Ahead-of-time compiled (AOT) code with `defprotocol` and `defrecord` creates interfaces and classes you can access from Java. You don't need gen-class, which is usually only necessary for "public static void main" methods and edge-case Java interop problems. I wrote about this on IBM developer

Re: Jesus, how the heck to do anything?

> I have been offered money > to program in java in the past.  I turned it down, turning the phrase > "you couldn't pay me to program in java" into a reality.  It's fair to > state that I hate java more than any other language.  I'd rather > program in COBOL than java. That's quite alright. Nine o

Re: Jesus, how the heck to do anything?

On Wed, Mar 23, 2011 at 9:30 AM, Jeff Heon wrote: >> Type in (println "hello world"), save and close. >> >> Run with java -jar /path/to/clojure.jar hello.clj > > Very handy to know. It might be nice to have it on > http://clojure.org/getting_started It's here: http://clojure.org/repl_and_main so

Re: Jesus, how the heck to do anything?

This is a well-known problem for people new to the JVM. There is a FAQ under development at http://dev.clojure.org/display/doc/FAQ to which I have just added a "Java Ecosystem" section and a "Running" section. Let me know if there are other questions you ran into that should be included. Proj

Re: Jesus, how the heck to do anything?

On Mar 23, 2011, at 7:26 PM, Armando Blancas wrote: > But there's no question that to use Clojure > you need a good grasp of java, the language and infrastructure, no way > around that. I don't know about that. I've been teaching a young'un Clojure without ever mentioning anything about Java. Kn

Re: Jesus, how the heck to do anything?

On Mar 23, 2011, at 8:26 PM, Armando Blancas wrote: > But there's no question that to use Clojure > you need a good grasp of java, the language and infrastructure, no way > around that. Once you learn that you might hate it some more. I don't think that has to be true. It depends both on what yo

Should destructure emit not nthnext, but nthrest?

Hi, I think destructure should not produce nthnext, because it realize an element of sequence more than needed. For example: (defn inc-seq [i] (iterate #(let [x (inc %)] (println "realize:" x) x) i)) ;=> #'user/inc-seq (take 1 (inc-seq 0)) ;=> (0) (take 1 (let [[x & xs] (inc-seq 0)] (cons x xs

Re: Jesus, how the heck to do anything?

On Mar 23, 2011, at 8:26 PM, Armando Blancas wrote: >> I have been offered money >> to program in java in the past. I turned it down, turning the phrase >> "you couldn't pay me to program in java" into a reality. It's fair to >> state that I hate java more than any other language. I'd rather >

Re: Should destructure emit not nthnext, but nthrest?

If you don't plan to use the &rest arguments, and in fact don't care about them at all, why are you binding them to something? More importantly, it would make the following idiom a lot more clumsy: (defn sum [list] (let [[x & xs] list] (+ x (if xs (sum xs) 0 Using

Re: Jesus, how the heck to do anything?

On Mar 24, 7:26 am, Armando Blancas wrote: > That's quite alright. Nine out of ten people here hate java; Actually, I didn't know that. I imagined that 9 out of 10 people here would be java-ites. It's good to know that I'm in good company. -- You received this message because you are subscrib

Re: Should destructure emit not nthnext, but nthrest?

> If you don't plan to use the &rest arguments, and in fact don't care > about them at all, why are you binding them to something? I omitted code for sake of simplicity. There are situations which require &rest arguments. > Using rest would cause the xs part to always be true You're right. I see t

Re: Jesus, how the heck to do anything?

On Wed, Mar 23, 2011 at 8:04 PM, ultranewb wrote: > On Mar 24, 7:26 am, Armando Blancas wrote: >> That's quite alright. Nine out of ten people here hate java; > > Actually, I didn't know that.  I imagined that 9 out of 10 people here > would be java-ites.  It's good to know that I'm in good compa

Re: Emacs with Lisp and Clojure.

But the same enter key works properly when I am using Lisp, so why shouldn't it be the default in Clojure as well? Also, after removing clojure-mode, when I try to install swank- clojure, it again installs the clojure-mode, but fails to install itself? regards, Manoj. On Mar 24, 12:45 am, Tassil

Re: Jesus, how the heck to do anything?

2011/3/24 ultranewb > On Mar 24, 7:26 am, Armando Blancas wrote: > > That's quite alright. Nine out of ten people here hate java; > > Actually, I didn't know that. I imagined that 9 out of 10 people here > would be java-ites. It's good to know that I'm in good company. > Frankly, I'm not awar