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  • RMagick returns nil reading JPEG

    - by ysproduction
    When I try to open a JPEG format file in Rails using RMagick, it always return nil with any jpg file. Other file formats open well. $ script/console Loading development environment (Rails 2.3.4) >> require 'RMagick' >> img = Image.read("1.gif").first => 1.gif GIF 230x100 230x100+0+0 PseudoClass 256c 8-bit 2kb >> img = Image.read("1.png").first => 1.png PNG 1280x800 1280x800+0+0 DirectClass 8-bit 156kb >> img = Image.read("1.jpg").first => nil Why this happens?

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  • Machine Learning Algorithm for Peer-to-Peer Nodes

    - by FreshCode
    I want to apply machine learning to a classification problem in a parallel environment. Several independent nodes, each with multiple on/off sensors, can communicate their sensor data with the goal of classifying an event as defined by a heuristic, training data or both. Each peer will be measuring the same data from their unique perspective and will attempt to classify the result while taking into account that any neighbouring node (or its sensors or just the connection to the node) could be faulty. Nodes should function as equal peers and determine the most likely classification by communicating their results. Ultimately each node should make a decision based on their own sensor data and their peers' data. If it matters, false positives are OK for certain classifications (albeit undesirable) but false negatives would be totally unacceptable. Given that each final classification will receive good or bad feedback, what would be an appropriate machine learning algorithm to approach this problem with if the nodes could communicate with each other to determine the most likely classification?

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  • Rails session cookie not getting set

    - by bwizzy
    I have a rails app that is a CMS that uses dynamic subdomains for each site. For some reason when I deployed to production the session cookie is not getting set. I'm thinking this is leading to the "Invalid Authenticity Token" errors that are being thrown everywhere. I have my production.rb setup so that I can share sessions across subdomains. What could be going wrong that the cookie isn't being set at all? #production.rb config.action_controller.session[:domain] = '.domain.com' #environment.rb config.action_controller.session = { :session_key => '_app_session', :secret => '.... nums and chars .....' }

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  • Difficulty screen scraping http://www.momondo.com using nokogiri

    - by Khai Kiong
    I have some difficulty to extract the total price (css selector = '.total') from the flight result. http://www.momondo.com/multicity/?Search=true&TripType=oneway&SegNo=1&SO0=KUL&SD0=KBR&SDP0=31-12-2012&AD=2&CA=0,0&DO=false&NA=false#Search=true&TripType=oneway&SegNo=1&SO0=KUL&SD0=KBR&SDP0=31-12-2012&AD=2&CA=0,0&DO=false&NA=false I get the error "undefined method `text' for nil:NilClass nokogiri ". My code desc "Fetch product prices" task :fetch_details => :environment do require 'nokogiri' require 'open-uri' include ERB::Util OneWayFlight.find_all_by_money(nil).each do |flight| url = "http://www.momondo.com/multicity/Search=true&TripType=oneway&SegNo=1&SO0=KUL&SD0=KBR&SDP0=31-12-2012&AD=2&CA=0,0&DO=false&NA=false#Search=true&TripType=oneway&SegNo=1&SO0=KUL&SD0=KBR&SDP0=31-12-2012&AD=2&CA=0,0&DO=false&NA=false" doc = Nokogiri::HTML(open(url)) price = doc.at_css(".total").text[/[0-9\.]+/] flight.update_attribute(:price, price) end end

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  • Datatype to use for collection of QT buttons

    - by different
    Hi Everyone, I am brand new to QT and need to develop the Mancala game. Since I'm brand new to the QT environment, my plan it to keep things very simple. I will be using the "Push Button" widget as pieces on the game. Since two players play this game, my idea is to have to arrays of buttons. One array for player 1 and the other for player 2. My question is since I am using "Push Button" widgets, how can I group them to iterate through? I notice that QT has both the array and vector data types but I'm confused on how these data types can be used to "group" the buttons. Does anyone know of any sample code or tutorials to look at to learn more? Thanks for your time and any input provided.

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  • System.AccessViolation in DllImport method after redeploy

    - by gall
    Hi Everyone, My environment: Windows 2003, VS 2008, .NET 3.5 C# .NET application. During loading my application I call method from C++ dll (Knowl.dll) through my third-party dll library (Common.dll) written in C#. After first deploy (from VS to Developing server) evrything works fine. Then I stops Developing Server, doesn't any changes in code and redeploy. Throws AccessViolationException on this imported method. What is it? On second and after redeplies - the same error. Only after deletin source code and recheckout it from CVS I can normally start server. Dll import: [DllImport("Knowl.dll", EntryPoint = "GetBaseName")] private static extern IntPtr getNameDll(); public static string GetName() { IntPtr p = IntPtr.Zero; p = getNameDll(); return Marshal.PtrToStringUni(p); }

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  • MVC architectural question - Where should payment processing go?

    - by Keltex
    This question is related to my ASP.NET MVC 2 development, but it could apply to any MVC environment and a question of where the logic should go. So let's say I have a controller that takes an online payment such as a shopping cart application. And I have the method that accepts the customers' credit card information: public class CartController : Controller CartRepository cartRepository = new CartRepository() [HttpPost] public ActionResult Payment(PaymentViewModel rec) { if(!ModelState.IsValid) { return View(rec); } // process payment here return RedirectToAction("Receipt"); } At the comment process payment here should the payment processing be handled: In the controller? By the repository? Someplace else?

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  • How can I use an Ant foreach iteration with values from a file?

    - by Egon Willighagen
    In our Ant build environment, I have to do the same task for a number of items. The AntContrib foreach task is useful for that. However, the list is in a parameter, where I actually have the list in a file. How can I iterate over items in a file in an foreach-like way in Ant? Something like (pseudo-code): <foreach target="compile-module" listFromFile="$fileWithModules"/> I'm happy to write a custom Task, and welcome any suggestion on possible solutions.

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  • [.NET] Line break in ListView work in Vista/7 but not in XP

    - by karol
    hi, I've got problem. I'm using ListView to show some data and I need to make two lines in one row. I've found solution to make row higher by adding ImageList with specified height and then I add Environment.NewLine to my text. It works in Vista and 7 but in XP instead of new line there are shown squares. I've been trying to add "\n" "\r\n" and ASCII char 10 but ther were still squares! After few days I still don't know what's wrong and I need your help.

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  • Error while trying to deploy blackberry application (Linker Error: 'VerifyError')

    - by Irwin
    Device: Curve 8520 OS: 4.6.1 JDE: 5.0.25 JDK: 1.6 Signed app? Yes. Hello, I'm trying to deploy a blackberry app (called 'ConstituenC') that works fine in the simulator. It uses restricted APIs, so I obtained a key from RIM and applied it via the Java Development Environment. When I attempt to run on my phone (BB Curve, 8520. OS: 4.6.1), it shows an error saying "'ConstituentC' attempts to access a secure API." The following is shown in the BB Event Log: Java Exception: Error starting ConstituentC: Module 'ConstituentC' attempts to access a secure API. Error starting ConstituentC: Module 'ConstituentC' attempts to access a secure API. Linker error: 'VerifyError' for ConstituentC Module 'ConstituentC' attempts to access a secure API module 9621 cannot reference net.rim.blackberry.api.mail.Store CMM: ConstituentC (9621) invalid sig for 0x424252 VM:LINK ConstituentC Any ideas on how this could be resolved?

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  • How do you execute Data Synchronizations between EPMA applications programmatically?

    - by Curtis Inderwiesche
    I would like to schedule a batch job in which a can execute a move of data between two workspace application in Hyperion Fusion Edition for Oracle. The tool provided is called 'Data Synchronization' This tool allows for this type if activity to occur upon request via the workspace environment. How might I do this automatically? I noticed there is a Batch Scheduler for which I can request command line batch file to run at a pre-specified time. However, I do not know what resources are available to show me how to do this for the Data-Synchronizations.

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  • Proper snowball analyzer configuration when using Grails Searchable Plugin

    - by Wirsbro
    To improve stemming we want to switch from the default analyzer to snowball, however, having a lot of difficulty with the proper settings and would appreciate any help. In Environment: - Sun's Java 1.6.16 - Grails 1.2.2 - Searchable Plug-In 0.5.5 Config.groovy: Have tried both settings: compassSettings = ['compass.engine.analyzer.stemmed.type': 'snowball', 'compass.engine.analyzer.stemmed.name': 'English'] compassSettings = ['compass.engine.analyzer.snowball.type': 'snowball', 'compass.engine.analyzer.snowball.name': 'English', 'compass.engine.analyzer.search.type': 'snowball', 'compass.engine.analyzer.search.name': 'English'] Search.groovy - The Invocation: def searchResult = searchableService.search(params.q, withHighlighter: { highlighter, index, sr if (!sr.highlights) { sr.highlights = [] } try { sr.highlights[index] = highlighter.fragments("content")[0..2].join(" ") } catch (IndexOutOfBoundsException ex) { sr.highlights[index] = highlighter.fragment("content") } }) def suggestion = searchableService.suggestQuery(params.q) if (suggestion != params.q) { searchResult.suggestedQuery = suggestion }

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  • How do I create email addresses for DotNetNuke users using my domain ([email protected]

    - by rwain
    My client wants to create email addresses for all their dotnetnuke users using their domain. The point is to keep the user's email addresses 'private' while still allowing communication through a public email address that they can control. It's not necessary to have a full webmail interface (although that would be nice). I'm thinking it would be enough just to forward any mail on and just act as a gateway. So if an email was sent to [email protected], it would be forwarded on to the email address associated with the dotnetnuke account with username 'rwain'. Is this possible to do in a shared hosting environment? Or do I need to create some custom mail server that does a conversion of the email address and forwards it?

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  • Creating a Web Wrapper for COM and OCX

    - by balexandre
    Hi guys, Today we have a windows application that, using an OCX, creates a web page (visible by a WebBrowser control in a small .NET WinForm application) and communicates through COM to the main application/client. (not relevant but this is Pascal) I'm currently responsible to re create this application in a web environment so we can have the same functionality shared through Web as the user can see the same in a Web Browser. The Windows application has almost 4 years on it and I need to re create everything from scratch, and all the bugs/features find in the future in the Windows Application I have to re create them again in the Web... Ohh well, you can see where this will end. I was thinking... is there any way I can create a Wrapper, even using 3rd party commercial objects, to: Communicate with the COM Object Can expose the content of the OCX (this in my most confortable language, ASP.NET C#, but other are welcome) I was thinking out loud, can this be accomplish with a Java Applet? Any ideas or any point to the right road will be appreciated.

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  • How to detect code duplication during development ?

    - by David Dibben
    We have a fairly large code base, 400K LOC of C++, and code duplication is something of a problem. Are there any tools which can effectively detect duplicated blocks of code? Ideally this would be something that developers could use during development rather than just run occasionally to see where the problems are. It would also be nice if we could integrate such a tool with CruiseControl to give a report after each check in. I had a look at Duploc some time ago, it showed a nice graph but requires a smalltalk environment to use it, which makes running it automatically rather difficult. Free tools would be nice, but if there are some good commercial tools I would also be interested.

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  • Ninject Given Path's format is not supported

    - by David Osborn
    The Ninject initialization works fine when i run my application directly from VS2010, but if I deploy the application to our custom "plugin" environment I get this error when I run the app and it tries to initialize Ninject. Error during initialization The given path's format is not supported. ERROR : The given path's format is not supported. Type : NotSupportedException Location: System.String CanonicalizePath(System.String, Boolean) Stack Trace: at System.Security.Util.StringExpressionSet.CanonicalizePath(String path, Boolean needFullPath) at System.Security.Util.StringExpressionSet.CreateListFromExpressions(String[] str, Boolean needFullPath) at System.Security.Permissions.FileIOPermission.AddPathList(FileIOPermissionAccess access, AccessControlActions control, String[] pathListOrig, Boolean checkForDuplicates, Boolean needFullPath, Boolean copyPathList) at System.Security.Permissions.FileIOPermission..ctor(FileIOPermissionAccess access, String[] pathList, Boolean checkForDuplicates, Boolean needFullPath) at System.IO.Path.GetFullPath(String path) at Ninject.Modules.ModuleLoader.NormalizePath(String path) at Ninject.Modules.ModuleLoader.GetFilesMatchingPattern(String pattern) at Ninject.Modules.ModuleLoader.b_0(String pattern) at System.Linq.Enumerable.d_142.MoveNext() at System.Linq.Lookup2.Create[TSource](IEnumerable1 source, Func2 keySelector, Func2 elementSelector, IEqualityComparer1 comparer) at System.Linq.GroupedEnumerable3.GetEnumerator() at Ninject.Modules.ModuleLoader.LoadModules(IEnumerable1 patterns) at Ninject.KernelBase.Load(IEnumerable`1 filePatterns) at Ninject.KernelBase..ctor(IComponentContainer components, INinjectSettings settings, INinjectModule[] modules) at Ninject.KernelBase..ctor(INinjectModule[] modules) at MyApp.Ioc.ResolveType.Initialize() at MyApp.Program.Run()

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  • Can somebody explain in a few sentences how these technologies relate: Flex, Flash, Air, ActionScrip

    - by SimpaCar
    I've read about each of these but I still don't understand how they all inter-operate, which are competing technologies, or even really what each of them is distinctly. Flash, Air, Flex... Are these all "containers"/JVM-like runtime environments, in which ActionScript code runs? SWF,FLV,AIR... Are these competing file formats which a Flash, Air or Flex runtime environment executes? ActionScript is a C-like language which compiles to SWF, FLV or AIR files? Sorry, with all the marketing around these terms, some of which are used interchangeably, I am quite lost. Suppose I wanted to write an AIR application... what would that entail? Writing ActionScript, compiling it to a SWF, and then installing the AIR runtime to execute it? How's that different than Flash? If I want to play AIR applications do I need a separate AIR runtime or does Flash execute AIR apps?

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  • why create "EventType clr20r3, P1 w3wp.exe" but don't have detail description of this unhandled exce

    - by Weixiao.Fan
    On the production server, I can see event from system Event Viewer when an asp.net app crash: *EventType clr20r3, P1 w3wp.exe, P2 6.0.3790.3959, P3 45d691cc, P4 app_web_default.aspx.cdcab7d2, P5 0.0.0.0, P6 4b2e4bf0, P7 4, P8 4, P9 system.dividebyzeroexception, P10 NIL.* it belongs to ".NET Runtime 2.0 Error Reporting" category. but I can't find a event which belongs to "ASP.NET 2.0.50727.0" which can give me this exception a detail view: *An unhandled exception occurred and the process was terminated. Application ID: /LM/W3SVC/505951206/Root Process ID: 1112 Exception: System.DivideByZeroException Message: Attempted to divide by zero. StackTrace: at _Default.Foo(Object state) at System.Threading.ExecutionContext.runTryCode(Object userData) at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading._ThreadPoolWaitCallback.PerformWaitCallbackInternal(_ThreadPoolWaitCallback tpWaitCallBack) at System.Threading.ThreadPoolWaitCallback.PerformWaitCallback(Object state) For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp I can find these two event on my dev machine, because of Visual Studio installing? If so, how can I disable this so I can emulate production environment? Great thanks and best regards, Fan

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  • VBA Outlook Mail .display, recording when/if sent manually

    - by ExcelCyclist
    My code displays a message with basic subject, body, attachment. Next the user manually updates and customizes the message and should send it. I want to record when (if) the email is sent. Is this possible or any tips? My environment is Office 2007 with an excel based macro going to Outlook. [Excerpt] Dim OutApp As Outlook.Application Dim OutMail As Outlook.MailItem Set OutApp = CreateObject("Outlook.Application") OutApp.Session.Logon Set OutMail = OutApp.CreateItem(olMailItem) With OutMail .To = Email '.CC = .Subject = Subj .BodyFormat = olFormatHTML .Body = Msg '.HTMLBody = Msg If Not FileAttach = vbNullString Then .Attachments.Add (FileAttach) .Display End With

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  • Opera Mobile for Windows + Reported Screen Size

    - by Antony Scott
    I know this isn't a direct programming question, but's it's kinda relevant as I'm trying to get a good testing environment set up before I embark on my latest project. I'm trying to set up Opera Mobile for Windows to allow me to test a new website. The UserAgent I get is a fairly generic one, so my workaround is to tweak my mobile.browser file to have the correct screen width and height of the target device. Is it possible to add to the list of "fake" user agents that Opera Mobile for Windows can pretend to be? It currently supports S60, Android and Windows Mobile.

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  • How to set AeDebug to get a minidump with the name of the process ?

    - by JC Martin
    I have to perform some post mortem debugging on a C++ project. Known way to perform is to set the cdb debugger as a minidump generator and to process the dumps collects afterwards. I read nearly the whole web and I didn't find a solution to produce a minidump with the name of the process that has crashed Is there a way to set AeDebug\Debugger registry variable in such a manner that cdb generates a dump file with the name of the process ? When I encapsulate the call to cdb.exe in a batch file, it starts well but stays blocked on the symbol searching. I must perform a Ctrl+C in order to stop the batch, then the minidump, with the correct process name, is created... but of course I can't set up such a thing in an unattended production environment... Has anybody done that before ?

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  • Robust fault tolerant MySQL replication

    - by Joshua
    Is there any way to get a fault tolerant MySQL replication? I am in an environment that has many networking issues. It appears that replication gets an error and just stops. I need it to continue to work and recover from these faults. There is some wrapper software that checks the state of replication and restarts it in the case of losing its log position. Is there an alternative? Note: Replication is done from an embedded computer with MySQL 4.1 to a external computer that has MySQL 5.0.45

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  • Avoid generating empty STDOUT and STDERR files with Sun Grid Engine (SGE) and array jobs

    - by vy32
    I am running array jobs with Sun Grid Engine (SGE). My carefully scripted array job workers generate no stdout and no stderr when they function properly. Unfortunately, SGE insists on creating an empty stdout and stderr file for each run. Sun's manual states: STDOUT and STDERR of array job tasks will be written into dif- ferent files with the default location .['e'|'o']'.' In order to change this default, the -e and -o options (see above) can be used together with the pseudo-environment-vari- ables $HOME, $USER, $JOB_ID, $JOB_NAME, $HOSTNAME, and $SGE_TASK_ID. Note, that you can use the output redirection to divert the out- put of all tasks into the same file, but the result of this is undefined. I would like to have the output files suppressed if they are empty. Is there any way to do this?

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  • Modifing settings in Django

    - by Cato Johnston
    I'm trying to get Django's manage.py to run with modified settings files. I have three settings files settings.py preview.py live.py settings.py contains my base settings but on live & preview sites I point the ['DJANGO_SETTINGS_MODULE'] to live or preview which in turn load the base file and any settings specific to that environment. This works fine, until I try to run migrations using manage.py I updated the manage.py file to import settings.preview but now when I try to run syncdb or migrate I get this error: django.core.exceptions.ImproperlyConfigured: You haven't set the DATABASE_ENGINE setting yet. My settings file has this in it though: DATABASE_ENGINE = 'mysql' How can I get this to work?

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  • Setting up java configurations in eclipse..Param files

    - by Charlie
    I'm going to be using ECJ for doing genetic programming and I haven't touched java in years. I'm working on setting up the eclipse environment and I'm catching a few snags. The ECJ source has several packages, and several sample programs come along with it. I ran one sample program (called tutorial1) by going to the run configurations and adding -file pathToParamsFile to the program arguments. This made it point to the params file of that tutorial and run that sample. In a new example I am testing (from the package gui) there are TWO params files. I tried pointing to just one param file and a program ran in the console, but there was supposed to be a GUI which did not load. I'm not sure what I'm doing wrong. Any help would be greaaatly appreciated.

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