Re: Sample application as showcase of Clojure DSL / Metaprogramming?

2011-09-26 Thread Tarantoga
Hello Alexey,

Probably, russian is your primary language? Then look here for the
examples of the DSL:
1. http://my-clojure.blogspot.com/search/label/DSL  -- a simple
embedded DSL for the application configuration;
2. Here (http://scala.by/meetups/2011/09/10/4.html) you may get the
slides of my presentation and my speech in MS Word format. It is about
DSLs construction.

Regards,
  Dmitry

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Re: Something missing from the clojure compiler's java annotation support for gen-class and defrecord? Am I driving while bouncing off the guard rails?

2011-09-23 Thread Tarantoga
Deftype handles annotations and all the other features of java
classes. Have a look here for an example:
http://translate.google.com/translate?sl=autotl=enjs=nprev=_thl=enie=UTF-8layout=2eotf=1u=http%3A%2F%2Fmy-clojure.blogspot.com%2F2011%2F06%2Fweb-clojure.html

On Sep 23, 10:11 pm, Warren Wood warrenthomasw...@yahoo.com wrote:
 Excellent, thanks!   And thanks for sharing the taxi from Strange Loop
 to STL tuesday night! :)

 On Sep 23, 2:07 pm, Stuart Sierra the.stuart.sie...@gmail.com wrote:







  Hi Warren,

  Clojure doesn't try to be support every possible feature of Java when
  generating Java classes, it just provides enough for interop purposes.
  Annotations have always been a weak area. I don't know if annotations on
  constructor arguments in `gen-class` are supported, but my suspicion is they
  are not.

  A patch would be possible - the `gen-class` code is written mostly in
  Clojure. But the easier solution for now would be to write a small class in
  Java and `:extend` it in your gen-class.

  -Stuart Sierra
  clojure.com

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Clojure on Heroku

2011-07-26 Thread Tarantoga
Does anyone know how to create an autoincrementing ID field for a
table schema on Heroku?

It uses PostgreSQL and a common way for this DB is to create a
sequence and then take default ID's from this sequence. But I haven't
found a way to do something like that.

I know that rails migrations do something similar but don't know how.
Are there any ideas?

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Re: Tutorial about web development with Clojure

2011-07-18 Thread Tarantoga
I have reorganised the code, made some refactoring and added new
functionality. For now, it is not just a blog but a more general
framework which you can reuse for your own webapps. It is here now:
https://github.com/dbushenko/Clojure-WebApp .
The enhancements:
1. Added validations for models.
2. Added URL-encoding functions in Rails-style. So, now if you define
a route like (route GET /post/show/:id post/show), you automatically
get a function 'post-show'. Calling it like this (post-show {:id 10})
will get you an actual route /post/show/10. I really like the
routing mechanisms in RoR and missed this functionality in clojure.
I will evolve the Clojure WebApp and will appreciate any help from all
of you. The feature requests are also welcome.
I think, that the main drawback of all the existing solutions in
clojure -- is lack of documentation. I plan to write a really detailed
guide of how to develop web applications with Clojure-WebApp in a
couple of weeks.
Again, don't hesitate to improve my code / documentation.

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Re: clooj, a lightweight IDE for clojure

2011-07-18 Thread Tarantoga
Yep, this is great! How about syntax highlighting?

On Jul 18, 10:03 am, Arthur Edelstein arthuredelst...@gmail.com
wrote:
 Hi Everyone,

 I want to let you know about clooj, a small, simple IDE for clojure
 that I have been developing (in clojure). It's packaged as a single
 jar file (including clojure 1.2), 
 here:https://github.com/downloads/arthuredelstein/clooj/clooj-0.1.0-standa...
 Just download it and double-click. (I use clooj to develop clojure
 code every day at work.)

 You can look at the source code here:https://github.com/arthuredelstein/clooj

 clooj runs as a standalone application or you can embed it in other
 JVM programs. (See the README, below).

 This is an alpha release and I plan to continue further development.
 Feedback of all kinds and code contributions are much appreciated! :)

 Arthur Edelstein
 San Francisco

 --

 clooj, a lightweight IDE for clojure

 --- the application
 clooj is a small, simple IDE (integrated development environment) for
 the clojure programming language. clooj is written entirely in clojure
 and uses a swing-based GUI. It is cross-platform (assuming Java 1.6
 has been installed on your operating system), and runs as a standalone
 application or as a clojure editor embedded in another java or clojure
 application. The standalone version (containing the clojure core) is a
 single jar file that can be launched by double-clicking its file icon
 or by running
 java -jar clooj-XXX-STANDALONE.jar from the command line. To embed in
 java, call clooj.core.show().

 --- the layout
 The clooj window contains three columns. The left-most column is a
 tree showing clojure projects and the source files they contain. The
 middle column is the source file editor. The right column displays
 inputs and outputs of clojure REPLs (read-evaluate-print loops).

 --- the source editor
 The source code editor offers a few simple things to make writing
 clojure code easier:

  *  A non-traditional bracket-matching feature highlights in gray
 those brackets that contain the innermost form you are currently
 editing.
  *  Mismatched or unmatched brackets are highlighted in pink.
  *  TAB indents, and shift+TAB unindents.
  *  Automatically comment-out (and un-comment-out) multiple lines.
  *  When newlines are entered, the next line is automatically
 indented.
  *  Press ctrl-ENTER to send either the nearest root form or the
 selected text to the REPL.
  *  Source files are continuously saved in the background to prevent
 accidental loss of your work in the event of a crash.

 --- clojure projects
 Each clojure project corresponds to a project directory somewhere in
 the file system, containing a src directory. Inside the src directory
 is the source code hierarchy, composed of directories and .clj files.
 Note this directory structure is completely compatible with the lein
 and cake clojure build programs and you are encouraged to use one of
 these from the command line in conjunction with the clooj editor.
 Clicking different source files in the projects tree will
 automatically change the source file currently being edited, as well
 as switch the REPL to the appropriate namespace.

 --- read-evaluate-print loops
 The upper part of clooj's REPL display column shows the REPL history
 (inputs and outputs) and the lower part is a text area for inputting
 forms into REPL. Each project gets its own REPL environment: when a
 project is first selected, a new clojure REPL is created behind the
 scenes and becomes the REPL in use. By choosing Restart REPL you
 cause a new REPL to be created for the currently selected project and
 the old one to be discarded, if possible. If the project directory
 contains directories named lib and/or jars and there are any jar
 files inside, these jars will be included in the classpath whenever
 the project REPL is launched. You can subsequently add further jar
 files to the classpath by placing them in the lib or jars
 directory and restarting the REPL.

 --- more work needed
 clooj is a work in progress. Your suggestions, criticisms and code
 contributions are appreciated.

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Re: Tutorial about web development with Clojure

2011-07-18 Thread Tarantoga
I have splitted it into two projects: the Clojure-WebApp itself
(webapp-0.1.0.jar on clojars.org) and the webexample1.
https://github.com/dbushenko/Clojure-WebApp
https://github.com/dbushenko/webexample1
Next step now: the detailed guide of using Clojure-WebApp.

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Re: Ring+Swank

2011-07-12 Thread Tarantoga
Thanks, that really works!

On Jul 12, 12:54 pm, Joost jo...@zeekat.nl wrote:
 On Jul 12, 7:27 am, Tarantoga d.bushe...@gmail.com wrote:

  Hi all,
  I'd like to make a web-app to which I could connect using slime and
  make some changes there while the application is still running. How to
  start Swank-server from the working Ring-application?

 The simplest way during development is to start swank (using
 leiningen) first, and then load  start the web server from the REPL.
 This ensures swank will start even if your code has a compilation
 error somewhere.

 Doing it the other way around isn't difficult either:

 (require 'swank.swank)
 (swank.swank/start-repl 4005) ; that's the standard swank port number

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Re: How to add jar files to leiningen projects?

2011-07-11 Thread Tarantoga
You can copy your jars in the project/lib directory and add the
:disable-implicit-clean true option to your project.clj file.
Leiningen will not delete your jars while building the project.

On Jul 11, 6:23 pm, finbeu info_pe...@t-online.de wrote:
 Hello,

 I have some external jar libaries that I need to import in my clojure
 namespace. As I just started to use leinigen, I don't understand how to add
 them to my project. Let's say the library resides in c:\temp\jars\mylib.jar

 How do I add this properly to mein leinigen project?

 (defproject myproject 1.0.0-SNAPSHOT
   :description FIXME: write description
   :dependencies [[org.clojure/clojure 1.2.1]
                  [org.clojure/clojure-contrib 1.2.0]
                  [WHAT TO PUT IN HERE?]])

 I assume I have to put that to .m2 repository but how?

 Thanks.

 - Finn

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Ring+Swank

2011-07-11 Thread Tarantoga
Hi all,
I'd like to make a web-app to which I could connect using slime and
make some changes there while the application is still running. How to
start Swank-server from the working Ring-application?

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Re: Tutorial about web development with Clojure

2011-06-29 Thread Tarantoga
Dmitry Gutov has improved the tutorial. The code looks much better now!

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Tutorial about web development with Clojure

2011-06-12 Thread Tarantoga
Hi all,

I have implemented a small blog (posts, comments, authentication) with
Clojure using the Rails-like style of development. It is located here:
https://github.com/dbushenko/ClojureBlog. The blog uses the following
principles:
1) MVC architecture;
2) RESTfull design;
3) Convention over configuration;
4) DRY (Don't repeat yourself);
The code contains lots of comments. Hope it will be useful for Clojure
web developers.

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