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  • rails using jruby 1.5 - slow!!

    - by gucki
    Hi! I'm currently using passenger with ree 1.8.7 in production for a rails 2.3.5 project using postgresql as a database. ab -n 10000 -c 100: 285.69 [#/sec] (mean) I read jruby should be the fastest solution, so I installed jruby-1.5.0.rc2 together with jdbc postgres adapter and glassfish. As the performance is really poor, I also started running my application using "jruby --server -J-Druby.jit.threshold=0 script/server -e production". Anyway, I only get ab -n 10000 -c 100: 43.88 [#/sec] (mean) Thread_safe! is activated in my rails config. Java seems to use all cores, cpu usage is around 350% (top). ruby -v: jruby 1.5.0.RC2 (ruby 1.8.7 patchlevel 249) (2010-04-28 7c245f3) (Java HotSpot(TM) 64-Bit Server VM 1.6.0_16) [amd64-java] I wonder what I'm doing wrong and how to get better performancre with jruby than with ree? Thanks, Corin

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  • Attachment_fu error

    - by cswebgrl
    Hello, I am getting an error while trying to upload images on an Ubuntu machine that's running Rails 2.3.4, Ruby 1.8.6 using attachment_fu with image science. FreeImage exception for type ???: IPTC: Invalid key 'Tag 0x025C' The error seems to point to this line in the image_science_processor in the attachment_fu plugin: def with_image(file, &block) ::ImageScience.with_image file, &block end My initial thoughts are that it has something to do with meta tags and the images and maybe free image. I don't actually see this error on my dev machine - Mac Snow Leopard, Rails 2.3.5, Ruby 1.8.7. Before I start messing versions on the production boxes, has anyone else encountered this issue and have an idea to fix it? THANKS!!!!

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  • Is it possible to compile IronRuby code to a .NET assembly (EXE or DLL)

    - by Chris Ammerman
    My scenario consists of the following points. I have a packaged software product I am developing in C# Since it is a packaged product, the public interfaces of the assemblies need to be tightly controlled... All assemblies are strong-named Any classes that don't absolutely have to be "public" are "internal" I want to write unit tests for those "internal" classes, since they are the bulk of the code And finally.... I want to try writing the unit tests in Ruby. Since the unit tests would be external to the assembly containing the code under test, the assemblies under test would each need to have an "InternalsVisibleTo" attribute specifying the name of the unit test assembly. Which of course would mean that the Ruby unit tests would have to compile down to a .NET assembly so they can be given access in this way. Can this be done? If so, how? All I can find on the web about "compiling IronRuby" is about building the actual IronRuby runtime from source.

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  • Drag and drop: jQuery UI or Scriptaculous?

    - by jpartogi
    Dear all, I am in the middle of the road whether to use jQuery UI or Scriptaculous for drag and drop. I am using Ruby on Rails, and Scriptaculous support in Ruby on Rails is superb with the existence of scriptaculous_helper.rb. But I have already use jQuery for the ajax and DOM manipulation. I do not mind to use scriptaculous since we can use jQuery.noConflict() in the code. I also kind of get the impression that scriptaculous drag and drop is better than jQuery UI drag and drop based on the online demos. So back to the original question, which one would you recommend as a drag and drop library and which one do you think is better than the other? Scriptaculous or jQuery UI?

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  • how to specify the file path in rails over Mongrel web server

    - by erwin
    hi, I have a request to load a swf file, flaMovie.swf from rails. The swf file is located the directory /home/user1/railsproj/flash. I have the code index.rhtml under view directory to show the .swf file, ID=flaMovie WIDTH=250 HEIGHT=250 When I ran the code, I got the error, ActionController::RoutingError (No route matches "/home/user1/railsproj/flash/flaMovie.swf" with {:method=:get}): /vendor/rails/actionpack/lib/action_controller/routing.rb:1441:in recognize_path' /vendor/rails/actionpack/lib/action_controller/routing.rb:1424:inrecognize' /vendor/rails/actionpack/lib/action_controller/dispatcher.rb:170:in handle_request' /vendor/rails/actionpack/lib/action_controller/dispatcher.rb:115:indispatch' /vendor/rails/actionpack/lib/action_controller/dispatcher.rb:126:in dispatch_cgi' /vendor/rails/actionpack/lib/action_controller/dispatcher.rb:9:indispatch' /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/rails.rb:76:in process' /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/rails.rb:74:insynchronize' My rails project is located in /home/user1/railsproj and the web server is Mongrel web server. How to specify the path in the rhtml file so that Mongrel server is able to locate the file? Thanks a lot,

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  • Retrieving accessors in IronRuby

    - by rsteckly
    I'm trying to figure out how to retrieve the value stored in the Person class. The problem is just that after I define an instance of the Person class, I don't know how to retrieve it within the IronRuby code because the instance name is in the .NET part. /*class Person attr_accessor :name def initialize(strname) self.name=strname end end*/ //We start the DLR, in this case starting the Ruby version ScriptEngine engine = IronRuby.Ruby.CreateEngine(); ScriptScope scope = engine.ExecuteFile("c:\\Users\\ron\\RubymineProjects\\untitled\\person.rb"); //We get the class type object person = engine.Runtime.Globals.GetVariable("Person"); //We create an instance object marcy = engine.Operations.CreateInstance(person, "marcy");

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  • Read entire file in Scala?

    - by Brendan OConnor
    What's a simple and canonical way to read an entire file into memory in Scala? (Ideally, with control over character encoding.) The best I can come up with is: scala.io.Source.fromPath("file.txt").getLines.reduceLeft(_+_) or am I supposed to use one of Java's god-awful idioms, the best of which (without using an external library) seems to be: import java.util.Scanner import java.io.File new Scanner(new File("file.txt")).useDelimiter("\\Z").next() From reading mailing list discussions, it's not clear to me that scala.io.Source is even supposed to be the canonical I/O library. I don't understand what its intended purpose is, exactly. ... I'd like something dead-simple and easy to remember. For example, in these languages it's very hard to forget the idiom ... Ruby open("file.txt").read Ruby File.read("file.txt") Python open("file.txt").read()

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  • How to install Nokogiri as a Macruby gem?

    - by Jakub Hampl
    The latest MacRuby release notes (v0.6) state that the authors have managed to get this release working with the SQLite and Nokogiri gems. However when I run sudo macgem install nokogiri I get the following errors: ERROR: Error installing nokogiri: extconf failed: and then a bunch of paths followed by: libxml2 is missing. try 'port install libxml2' or 'yum install libxml2' /Library/Frameworks/MacRuby.framework/Versions/0.6/usr/lib/ruby/Gems/1.9.0/gems/nokogiri-1.4.1/ext/nokogiri/extconf.rb:1:in `<main>': libxml2 is missing. try 'port install libxml2' or 'yum install libxml2' (SystemExit) Anyone knows how to get this working? My platform is Mac OS X 10.6.3. Nokogiri normally (meaining on plain old ruby 1.8.7) installs without a problem.

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  • Why doesn't IronRuby have the same tools that IronPython does?

    - by rsteckly
    Hi, I've been using Ruby as my main scripting language for years but switched to .NET several years ago. I'd like to continue using Ruby (primarily for testing) BUT the toolset for IronRuby is really nonexistent. Why? In Python, meanwhile, there are project templates and full intellisense support. Why isn't there something like that for IronRuby? The only thing I've been able to find on it is "there are no plans for VS integration at this time." Why???

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  • How to unit test internals (organization) of a data structure?

    - by Herms
    I've started working on a little ruby project that will have sample implementations of a number of different data structures and algorithms. Right now it's just for me to refresh on stuff I haven't done for a while, but I'm hoping to have it set up kind of like Ruby Koans, with a bunch of unit tests written for the data structures but the implementations empty (with full implementations in another branch). It could then be used as a nice learning tool or code kata. However, I'm having trouble coming up with a good way to write the tests. I can't just test the public behavior as that won't necessarily tell me about the implementation, and that's kind of important here. For example, the public interfaces of a normal BST and a Red-Black tree would be the same, but the RB Tree has very specific data organization requirements. How would I test that?

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  • Where are the new languages?

    - by Johnson William
    Most now mainstream/popular (interpreted|scripting) programming languages were created around the 1990's. (Perl, Python, Ruby, PHP just to name a few). How many people knew about those languages around 1-2 years after they had been first published? Are there languages with potential of becoming as important as e.g.: Python or PHP being developed at the moment? I mean ... is there someone even seriously trying to create a new one? If the first version of a programming language is published and nearly nobody knows about it, as it was with all the languages I've mentioned above, where could I find out? Is there some sort of "list" or "network" dealing just with non-language-specific news? Is the area where Perl, Python, Ruby and PHP fit in already fully covered? Do you know of concrete examples of new programming languages being seriously developed or rising at the moment? (Except Google's go!)

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  • Remove all problematic characters in an intelligent way in C#

    - by J. Pablo Fernández
    Is there any .Net library to remove all problematic characters of a string and only leave alphanumeric, hyphen and underscore (or similar subset) in an intelligent way? This is for using in URLs, file names, etc. I'm looking for something similar to stringex which can do the following: A simple prelude "simple English".to_url = "simple-english" "it's nothing at all".to_url = "its-nothing-at-all" "rock & roll".to_url = "rock-and-roll" Let's show off "$12 worth of Ruby power".to_url = "12-dollars-worth-of-ruby-power" "10% off if you act now".to_url = "10-percent-off-if-you-act-now" You don't even wanna trust Iconv for this next part "kick it en Français".to_url = "kick-it-en-francais" "rock it Español style".to_url = "rock-it-espanol-style" "tell your readers ??".to_url = "tell-your-readers-ni-hao"

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  • Python comparing string against several regular expressions

    - by maerics
    I'm pretty experienced with Perl and Ruby but new to Python so I'm hoping someone can show me the Pythonic way to accomplish the following task. I want to compare several lines against multiple regular expressions and retrieve the matching group. In Ruby it would be something like this: STDIN.each_line do |line| case line when /^A:(.*?)$/ then puts "FOO: #{$1}" when /^B:(.*?)$/ then puts "BAR: #{$1}" # when ... else puts "NO MATCH: #{line}" end end My attempts in Python are turning out pretty ugly because the matching group is returned from a call to match/search on a regular expression and Python has no assignment in conditionals or switch statements. What's the Pythonic way to do (or think!) about this problem?

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  • How to log messages to a log file in a specific path from a bash script

    - by Erik
    How do you log messages to a log file in a specific path from a bash script? A naive implementation would be commands like: echo My message >>/my/custom/path/to/my_script.log But this probably has many disadvantages (no log rotation for example). I could use the 'logger' command, but it does not support logs in custom paths as far as I know and is not easy to configure if you have lots of bash scripts that could use a custom log file. In a scripting language like Ruby all this is quite easy: https://github.com/rudionrails/yell/wiki/101-the-datefile-adapter I could also make my own logger command based on this ruby library and call it from my bash scripts, but I guess there is already a well known solution that provides similar behavior for shell scripts?

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  • Vim: different key mapping for different window

    - by rahul
    My .vimrc file has filetype mappings for different filetypes such as : autocmd FileType sh map gf ... autocmd FileType ruby map gf ... While rewriting a program from one language to another, I have 2 splits, one with a shell script and one with ruby. I would assume that "gf" would take on its mapping based on filetype. However, it can only hold one mapping at a time. Is there any way to declare a mapping only for the existing file/window. I tried ":windo" and ":bufdo" but they work for all windows or buffers.

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  • Finding the best jquery plugins

    - by Lan
    Is there a resource for finding the "best" jquery plugins, or at least just the most used ones? For example, I wanted to find a menu jquery plugin but when I goto the jquery website there are so many to look through and I don't see a way to see how popular each one is. For ruby there's the http://ruby-toolbox.com/ which lists many plugins, how popular they are, info about them, etc. Is there something similar or at least some way to filter through all the jquery plugins? EDIT 1: To shed some more light on this - the "most popular" link on the jquery page is useless. I can't find a way to search through it but even worse, the ratings don't seem to mean much. Ex - the first item, in other words the most popular plugin in that list has 5 stars and TWO votes. Doesn't seem like a very reliable resource to me.

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  • Why could Shark be so slow?

    - by taw
    I'm trying to profile Ruby interpreter. I run shark -i ./ruby bm_sudoku.rb or something like that, the script finishes in less than a second, and then Shark goes to "CHUDData - Analyzing samples... 99.3%.." point and stays there frozen for 10 minutes or so. It finishes eventually, it's just so ridiculously slow it's pretty much unusable. Version I have here is OSX 10.5, shark 4.6.1 (227). Any ideas what that might be?

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  • Whats are basic things you should kept in mind while writing functional tests?

    - by piemesons
    Hello, what kind of functionality should be covered in functional test? How to prioritize what are the functionality that must be covered in functional test. I can understand it depends upon on the project, whats the functionality present the project. Lets take a example of stackoverflow. Suppose we are developing a basic working model of this. What kind of functional test must be covered in this. Just brief what the key points while writing functional tests. (taking any basic functionality from this site just to understand the reference) Still its platform independent question.I am using ruby on rails developer, but keeping ruby on rails as mind will be preferable.

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  • How can I merge CSS definitions in files into inline style attributes, using Perl?

    - by mintywalker
    Many email clients don't like linked CSS stylesheets, or even the embedded <style> tag, but rather want the CSS to appear inline as style attributes on all your markup. BAD: <link rel=stylesheet type="text/css" href="/style.css"> BAD: <style type="text/css">...</style> WORKS: <h1 style="margin: 0">...</h1> However this inline style attribute approach is a right pain to manage. I've found tools for Ruby and PHP that will take a CSS file and some separate markup as input and return you the merged result - a single file of markup with all the CSS converted to style attributes. I'm looking for a Perl solution to this problem, but I've not found one on CPAN or by searching Google. Any pointers? Alternatively, are there CPAN modules one could combine to achieve the same result? Ruby http://code.dunae.ca/premailer.web/ PHP http://www.pelagodesign.com/sidecar/emogrifier/ Perl ?

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