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  • assign subset of parent table to objects in R

    - by Brandon
    Hello, I would like to iterate through a table and break it into relvant parts based on the number of visits. I have tried several things but cannot seem to get it to work. I have included the code. for(i in 1:6){ paste("testing.visit",i,"\n",sep="") <- subset(testing,visit_no==2) } But I get the following error. Error in paste("testing.visit", i, "\n", sep = "") <- subset(testing, : target of assignment expands to non-language object Thank you, Brandon

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  • joomla: tinymce editor iframe not loaded

    - by Sanjay
    i have a problem with joomla editor tinymce. it doesnot load iframe in content. this is my iframe code: <iframe marginheight="0" marginwidth="0" src="store-locations.php_files/maps.htm" width="500" frameborder="0" height="330" scrolling="no"></iframe>

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  • How can I launch app store from my application

    - by Tankista
    Im trying to implement button which opens app store application from my app. I use this simple line of code, which opens safari but not app store application. [[UIApplication sharedApplication] openURL:[NSURL URLWithString: @"http://itunes.apple.com/sk/app/tweetie-2/id333903271?mt=8"]]; I dont know whats wrong, is the URL format correct? I was following this document. All related questions in stackoverflow are outofdate I suppose.

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  • iPhone Game Developers - What does your toolchain look like?

    - by slf
    For example: source control: git + adobe drive 3d: google sketchup - *.dae - blender - *.obj 2d: photoshop/illustrator - *.png audio: audacity - *.caf code: ArgoUML, Xcode, Textmate test: OCUnit build: rake, Xcode Feel free to mention any other tools that you think are awesome :) Changed to Community Wiki

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  • Broadcasting

    - by Avik
    Could anyone please provide me with the code or link to send and receive broadcast messages if possible using UDP? I have been stuck in a problem and hope if u guys could help me resolve it. Thanks

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  • C# autocomplete not working for Script# in visual studio

    - by samwa
    Hi I'm using the fantastic project Script# (http://projects.nikhilk.net/ScriptSharp) I can't seem to get the autocomplete feature in VisualStudio 2008 working the .scriptlet files appear as plain text with no code formatting at all the version of Script# I am using is 0.5.6 I am opening the samples project and looking at HelloWorld.scriptlet Cheers Sam

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  • Get compiler generated delegate for an event

    - by Sandor Davidhazi
    I need to know what handlers are subsribed to the CollectionChanged event of the ObservableCollection class. The only solution I found would be to use Delegate.GetInvocationList() on the delegate of the event. The problem is, I can't get Reflection to find the compiler generated delegate. AFAIK the delegate has the same name as the event. I used the following piece of code: PropertyInfo notifyCollectionChangedDelegate = collection.GetType().GetProperty("CollectionChanged", BindingFlags.Instance | BindingFlags.Static | BindingFlags.NonPublic | BindingFlags.FlattenHierarchy);

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  • Reservoir sampling

    - by Codenotguru
    to retrieve k random numbers from an array of undetermined size we use a technique called reservoir sampling. Can anybody briefly highlight how it happens with a sample code??

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  • Lightweight JMS broker

    - by nixau
    Hi, I'm looking for a small and yet efficient enough lightweight JMS broker solution with no or minimum of dependencies. My messaging code should be running in the environment with a lot of dependencies I have no control of. Thus it would make ridiculous to deploy say ActiveMQ solution along with my custom bunch of classes. Thanks for your time.

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  • Controllers and threads

    - by user72185
    Hi, I'm seeing this code in a project and I wonder if it is safe to do: (ASP.NET MVC 2.0) class MyController { void ActionResult SomeAction() { System.Threading.Thread newThread = new System.Threading.Thread(AsyncFunc); newThread.Start(); } void AsyncFunc() { string someString = HttpContext.Request.UrlReferrer.Authority + Url.Action("Index", new { controller = "AnotherAction" } ); } } Is the controller reused, possibly changing the content of HttpContext.Request and Url, or is this fine (except for not using the thread pool). Thanks for info!

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  • How get page size from MemoryStream or Byte ?

    - by Nakul Chaudhary
    I have images of active report in database, when i get into bytes and convert into memory stream so it can pass to active report viewer then how i get paper size of paper display in active report? My code : Dim repmem As New System.IO.MemoryStream(rptBytes) repmem.Position = 0 Viewer1.Document.Load(repmem)

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  • ckeditor: toggle button in facelets

    - by Shilpa
    I am trying to toggle between CKEditor and textarea in a facelet(.xhtml) file. I have used the same code in a jsp file and it works fine. But in .xhtml file its not doing the toggle between ckeditor and plain editor.It loads ckeditor both the times.Can anyone please let me know what am I missing. Code of xhtml file: <html xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://java.sun.com/jsf/html" xmlns:ckeditor="http://ckeditor.com"> <head> <title>Welcome PAge</title> <script type="text/javascript" src="ckeditor/ckeditor.js"></script> <script type="text/javascript" src="ckeditor/adapters/jquery.js"></script> <script type="text/javascript" src="ckeditor/config.js"></script> </head> <body> <div>Welcome Page!!</div> <h:form> <center><p><h:outputText value="#{userBean.username} logged in"/></p></center> <center> <p> Questions: <h:inputTextarea id="editor1" class="ckeditor" rows="20" cols="75" /> <br></br> </p> </center> <h:commandButton value="Ckeditor" onclick="ckeditor.replace('editor1');" /> <h:commandButton value="Text editor" onclick="ckeditor.instances.editor1.destroy();" /> <h:commandButton value="Get Data" onclick="alert(ckeditor.instances.editor1.getData());" /> <br></br> <br></br> </h:form> </body> </html> Thanks in advance, Shilpa

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  • Where do I find a list of changes and bug fixes for .Net classes from 3.5 -> 4.0?

    - by Nathan Ridley
    I'm having trouble finding a list of the changes and bug fixes that have been made in the .Net framework for .Net 4.0. They're not easy to find, but surely they exist somewhere? Specifically I want to find out what changes and updates have been made for System.Net.HttpWebRequest and System.Net.CookieContainer, as both are quite bugridden in 3.5 and I want to evaluate whether I should write my code for .Net 4.0 or if I should create some custom classes to work around their issues.

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  • jQuery: How to grab RadioButton selection?

    - by Matt
    I need to grab the value of the radiobutton option selected with jQuery. I am using the following code but "str" is undefined in Firebug: //handling Feed vs. Ingredient RadioButton $('[id$=rdoCheck]').change(function() { str = $("input[name='rdoCheck']:checked").val(); //ingredients if (str == "ing") { $('[id$="lblDescription"]').text("Ingredient") } //finished feed else if (str == "ffc") { $('[id$="lblDescription"]').text("Finished") } });

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  • PHP mod rewrite .htaccess file godaddy.com question

    - by max
    I'm new to PHP and i was trying to learn mod rewrite to rewrite my URLs i use godaddy as my hosting company and they say to add the desired code to the body of your .htaccess file how do I mod rewrite my URLs and add it to my .htaccess file? Can some one give me an example of how to do this as well as point me to a good tutorial and or book on how to mod rewrite my URLs?

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  • XSLT: opening but not closing tags

    - by farhad
    Is there a way to open a tag and not close it? For example: <xsl:for-each select="."> <span> </xsl:for-each> This piece of code is not valid because XSLT is not well formed, but is there a way to do a similar thing? Thank you

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  • Google Maps: marker icons are multi over same location, why?

    - by JakiT
    I'm using Google Maps and have the map set to height/width=100%. I noticed that when I resize the browser window, my map marker icons appear to redraw on top of the same location. Meaning, if I should only have 1 map marker icon on "987 Main St", when I resize the browser window - multiple map marker icons are being now draw on top of "987 Main St" that shouldn't be there. Any ideas why this is happening and how to prevent it? UPDATE: Link to actual code

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  • C++ Multithreading with pthread is blocking (including sockets)

    - by Sebastian Büttner
    I am trying to implement a multi threaded application with pthread. I did implement a thread class which looks like the following and I call it later twice (or even more), but it seems to block instead of execute the threads parallel. Here is what I got until now: The Thread Class is an abstract class which has the abstract method "exec" which should contain the thread code in a derive class (I did a sample of this, named DerivedThread) Thread.hpp #ifndef THREAD_H_ #define THREAD_H_ #include <pthread.h> class Thread { public: Thread(); void start(); void join(); virtual int exec() = 0; int exit_code(); private: static void* thread_router(void* arg); void exec_thread(); pthread_t pth_; int code_; }; #endif /* THREAD_H_ */ And Thread.cpp #include <iostream> #include "Thread.hpp" /*****************************/ using namespace std; Thread::Thread(): code_(0) { cout << "[Thread] Init" << endl; } void Thread::start() { cout << "[Thread] Created Thread" << endl; pthread_create( &pth_, NULL, Thread::thread_router, reinterpret_cast<void*>(this)); } void Thread::join() { cout << "[Thread] Join Thread" << endl; pthread_join(pth_, NULL); } int Thread::exit_code() { return code_; } void Thread::exec_thread() { cout << "[Thread] Execute" << endl; code_ = exec(); } void* Thread::thread_router(void* arg) { cout << "[Thread] exec_thread function in thread" << endl; reinterpret_cast<Thread*>(arg)->exec_thread(); return NULL; } DerivedThread.hpp #include "Thread.hpp" class DerivedThread : public Thread { public: DerivedThread(); virtual ~DerivedThread(); int exec(); void Close() = 0; DerivedThread.cpp [...] #include "DerivedThread.cpp" [...] int DerivedThread::exec() { //code to be executed do { cout << "Thread executed" << endl; usleep(1000000); } while (true); //dummy, just to let it run for a while } [...] Basically, I am calling this like the here: DerivedThread *thread; cout << "Creating Thread" << endl; thread = new DerivedThread(); cout << "Created thread, starting..." << endl; thread->start(); cout << "Started thread" << endl; cout << "Creating 2nd Thread" << endl; thread = new DerivedThread(); cout << "Created 2nd thread, starting..." << endl; thread->start(); cout << "Started 2nd thread" << endl; What is working great if I am only starting one of these Threads , but if I start multiple which should run together (not synced, only parallel) . But I discovered, that the thread is created, then as it tries to execute it (via start) the problem seems to block until the thread has closed. After that the next Thread is processed. I thought that pthread would do it unblocked for me, so what did I wrong? A sample output might be: Creating Thread [Thread] Thread Init Created thread, starting... [Thread] Created thread [Thread] exec_thread function in thread [Thread] Execute Thread executed Thread executed Thread executed Thread executed Thread executed Thread executed Thread executed .... Until Thread 1 is not terminated, a Thread 2 won't be created not executed. The process above is executed in an other class. Just for the information: I am trying to create a multi threaded server. The concept is like this: MultiThreadedServer Class has a main loop, like this one: ::inet::ServerSock *sock; //just a simple self made wrapper class for sockets DerivedThread *thread; for (;;) { sock = new ::inet::ServerSock(); this->Socket->accept( *sock ); cout << "Creating Thread" << endl; //Threads (according to code sample above) thread = new DerivedThread(sock); //I did not mentoine the parameter before as it was not neccesary, in fact, I pass the socket handle with the connected socket to the thread cout << "Created thread, starting..." << endl; thread->start(); cout << "Started thread" << endl; } So I thought that this would loop over and over and wait for new connections to accept. and when a new client arrives, I am creating a new thread and give the thread the connected socket as a parameter. In the DerivedThread::exec I am doing the handling for the connected client. Like: [...] do { [...] if (this-sock_-read( Buffer, sizeof(PacketStruc) ) 0) { cout << "[Handler_Base] Recv Packet" << endl; //handle the packet } else { Connected = false; } delete Buffer; } while ( Connected ); So I loop in the created thread as long as the client keeps the connection. I think, that the socket may cause the blocking behaviour. Edit: I figured out, that it is not the read() loop in the DerivedThread Class as I simply replaced it with a loop over a simple cout-usleep part. It did also only execute the first one and after first thread finished, the 2nd one was executed. Many thanks and best regards, Sebastian

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  • Usefulness of Toggle functions

    - by roygbiv
    Is it better to write functions that explicitly do something (i.e. HideForm/ShowForm etc...) or is it better to write 'Toggle' type functions (i.e. ToggleVisibility)? I find Toggle type functions awkard because it's hard to track the state by reading the code. In what situations is a toggle type function useful?

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  • How I can get rid of None values in dictionary?

    - by Vojtech R.
    Something like: for (a,b) in kwargs.iteritems(): if not b : del kwargs[a] This code raise exception because changing of dictionary when iterating. I discover only non pretty solution with another dictionary: res ={} res.update((a,b) for a,b in kwargs.iteritems() if b is not None) Thanks

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