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  • R language: open ssh connection

    - by marpo_it
    I am trying to open a remote shell via ssh to send commands from R. As long as I send commands, I need to get results and send new commands that depends on the output of the previous ones. For this reason I am looking for a solution to open a connection and manage it from within the R code until I have finished. I also need to open the connection with ssh key exchange (so without password authentication). Looking at CRAN I didn't find anything useful.

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  • $_SERVER["SCRIPT_URI"] not working? alternative?

    - by Ahmad Fouad
    Hi, This is odd, but for some reason the $_SERVER["SCRIPT_URI"] will not return the domain name when I am in child/sub-pages but will only work on the main page. Not sure if its due to the script (WordPress) or host, but please can you suggest any reliable solution to retrieve the domain name with PHP? I am very thankful in advance, Regards

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  • Calculate Total Value In Gridvew In ASP.net C#

    - by Suryakavitha
    Hi, I am using a website which contains a gridview for view details of Product details... It contains columns like name,area,phnoe no,quantity,price,total.... now i want to calculate toatal value for that i hav to multiply the columns quantity and Price and also put that answer to total column in grid... How Shall i do this? Any one tell me the solution of this! Thanks in advance...

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  • What are pros and cons, If I choose HTML 5 for all new projects?

    - by jitendra
    Everyone, every blog is talking about HTML 5 and giving solution to use HTML in all browsers including IE6. Should we leave XHTML 1.0 now and go for HTML 5 and use JavaScript for IE6 support? Does all other desktop/mobile browser except IE6 supports HTML 5 without adding JavaScript? Will every browser render CSS written for HTML 5 elements? What about Screen- readers? What are pros and cons to choose HTML 5 for all new projects?

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  • Dragging Custom Node in JavaFX

    - by Karussell
    I cannot get it working although I am very close to an acceptable solution. I can drag the Dock if it is only a rectangle. But if I add a node (e.g. an image) to this dock I am not able to get a working solution. Do you have a code snippet, link or other advices for me? Here is my code: public class Dock extends CustomNode { // initialize this with an 64x64 image of your choice // via ImageView { image: Image {..}} public var content: Node[]; public var width = 64; public var height = 64; public var xOffset: Number = 0; public var yOffset: Number = 0; var imgX: Number = 0; var imgY: Number = 0; var distX: Number; var distY: Number; public var rasterX = function (n: Number): Number { var MAX = 4 * 64; if (n < 0) { return 0 } else if (n > MAX) { return MAX } else return n } public var rasterY = rasterX; override protected function create(): Node { Group { // if we place the translate here then the whole dock will flicker //translateX: bind imgX; //translateY: bind imgY; content: [ Rectangle { // ... and here 'content' won't be dragged translateX: bind imgX; translateY: bind imgY; height: bind height width: bind width fill: Color.LIGHTGRAY strokeWidth: 4 stroke: Color.BLACK }, content] onMousePressed: function (e: MouseEvent): Void { xOffset = e.x; yOffset = e.y; // Calculate the distance of the mouse point from the image // top-left corner which will always come out as positive value distX = e.x - imgX; distY = e.y - imgY; } onMouseDragged: function (e: MouseEvent): Void { // Find out the new image postion by subtracting the distance // part from the mouse point. imgX = rasterX(e.x - distX); imgY = rasterY(e.y - distY); } } }

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  • Reopening serial port fails if not closed properly with CloseHandle

    - by superg
    I am working with USB device on Windows that is seen as a virtual serial port. I can communicate with the device using CreateFile and ReadFile functions, but in some cases my application does not call CloseHandle (when my application in development crashes). After that all calls to CreateFile fail (ERROR_ACCESS_DENIED), and the only solution is to log in to my computer again. Is there any way to force closing the open handle (or reopening) programmatically?

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  • [game] How to write ::: in cpp and ??? in c#?

    - by daveny
    These questions are a kind of game, and I did not find the solution for them. It is possible to write ::: in Cpp without using "" or anything like this and the compiler will accept it. (macro-s are prohibited too) And the same is true for C# too, but in C#, you have to write ???. I think Cpp will use the :: scope operator and C# will use '? :' , but I do not know the answers to them. Any idea?

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  • How to get rid of g++ hash_map deprecation warning?

    - by Adam
    When I compile a c++ application I'm writing that makes use of hash_map, I get this warning on g++ 4.3.2: You are using the deprecated header . To eliminate this warning, use an ANSI-standard header file or use hte -Wno-deprecated compiler flag. 9> #include <ext/hash_map> What include replaces this? I've searched for a while on google, and can't find anything except for people having similar problems, but no solution.

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  • Reading Email using Pop3 in C#

    - by Eldila
    I am looking for a method of reading emails using Pop3 in C# 2.0. Currently, I am using code found in CodeProject. However, this solution is less than ideal. The biggest problem is that it doesn't support emails written in unicode.

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  • .Net 3.5 Windows Service hide WCF Service Host

    - by Melursus
    I got a Windows service installed on my development machine (that I made) and I want to interact with it. For a reason I don't know, each time I start the client, a WCF Service Host pop and said that the address is already in use ... which is true ... but how can I do to NOT start that Windows ? Is it because my two projects (server and client) are in the same solution ?

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  • What are options for GWT to C++ communication?

    - by seas
    I am looking for GWT to C++ communication solution. Currently I am trying to figure out how to run WSDL in GWT, but actually, have absolutely no experience in WSDL, and only little in GWT. So, my question is about feasibility of working with WSDL in GWT (and how?) and other approaches would also be interesting if exist. I am trying to avoid coding Java on the server and coding JavaScript on client.

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  • [Flex] Caching canvas into ByteArray

    - by Eugene
    Task: (all in code, not visual) create a canvas, place into it some labels and draw some lines, then cache it as byteArray. The problem is that if I cache an object that is already drawed on the screen, it works great, but if I cache a canvas, that have been created few lines earlier, this results white image. Is there any solution to cache a display object, that was created in code, but not intended to be displayed at all?

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  • Restricting Edit and Delete in Ruby on Rails

    - by phleet
    I want to be able to edit and delete resources myself, but not allow users of the application to do so. Is there an easy way of doing this in Rails? An incomplete solution would be just to remove the "delete" and "edit" buttons from the index view, but that doesn't disable their ability to do so via direct HTTP requests. Running Rails 2.2.2 and ruby 1.8.7

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  • Where do I put common code for if and elif?

    - by Vishal
    For the example below: if a == 100: # Five lines of code elif a == 200: # Five lines of code Five lines of code is common and repeating how can I avoid it? I know about putting it a function or if a == 100 or a == 200: # Five lines of code if a == 100: # Do something elif a == 200: # Do something Any other cleaner solution?

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  • How to build many projects with the same svn revision number with hudson?

    - by tangens
    I'm just starting with hudson and I'd like to build my projects like my handmade solution did before: Retrieve the current svn revision number rev. Build all projects (each with individual result) with the revision number rev. Start again with step 1 regardless if there were any changes in the meantime (to detect nondeterministic errors that don't occur on every test run). How can I configure this with hudson?

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  • Ruby 1.9 and Rackspace's email api (SOAP)

    - by kjs3
    Is anyone out there working with SOAP on Ruby 1.9? Rackspace has email addresses for $2/month and an api to programmatically create/destroy accounts which looks like the best I've found. Fusemail has $2 addresses too but you need a minimum of 80 to get access to the api. So, I either need to find a solution to working with Rackspace or a different email host.

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  • waiting for 2 different events in a single thread

    - by João Portela
    component A (in C++) - is blocked waiting for alarm signals (not relevant) and IO signals (1 udp socket). has one handler for each of these. component B (java) - has to receive the same information the component A udp socket receives. periodicaly gives instructions that should be sent through component A udp socket. How to join both components? it is strongly desirable that: the changes to attach component B to component A are minimal (its not my code and it is not very pleasent to mess with). the time taken by the new operations (usually communicating with component B) interfere very little with the usual processing time of component A - this means that if the operations are going to take a "some" time I would rather use a thread or something to do them. note: since component A receives udp packets more frequently that it has component B instructions to forward, if necessary, it can only forward the instructions (when available) from the IO handler. my initial ideia was to develop a component C (in C++) that would sit inside the component A code (is this called an adapter?) that when instanciated starts the java process and makes the necessary connections (that not so little overhead in the initialization is not a problem). It would have 2 stacks, one for the data to give component B (lets call it Bstack) and for the data to give component A (lets call it Astack). It would sit on its thread (lets call it new-thread) waiting for data to be available in Bstack to send it over udp, and listen on the udp socket to put data on the Astack. This means that the changes to component A are only: when it receives a new UDP packet put it on the Bstack, and if there is something on the Astack sent it over its UDP socket (I decided for this because this socket would only be used in the main thread). One of the problems is that I don't know how to wait for both of these events at the same time using only one thread. so my questions are: Do I really need to use the main thread to send the data over component A socket or can I do it from the new-thread? (I think the answer is no, but I'm not sure about race conditions on sockets) how to I wait for both events? boost::condition_variable or something similar seems the solution in the case of the stack and boost::asio::io_service io_service.run() seems like the thing to use for the socket. Is there any other alternative solution for this problem that I'm not aware of? Thanks for reading this long text but I really wanted you to understand the problem.

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  • jQuery resize width on firefox

    - by LM35DT
    I'm doing some experiments with jquery n widths for a liquid column and I'm not sure why it isn't working on firefox. It works fine on IE6,7,8 Chrome, Opera(sluggish). I found some articles about firefox not recognizing the .resize attribute but no explanation/solution =\ $(document).ready(function(){ $(midCol).width((window,$(window).width()) - 470) $(window).resize(function(){$(midCol).width((window,$(window).width()) - 470) }) });

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  • Settings File as Dictionary with Serialization

    - by AKRamkumar
    This is a three part question. One: Would using a Dictionary<String,Object> be a good way of saving data where it would be Dictionary<Key,Value> as the basis? Two: What would be a better way without using app.settings or xml? Three: How would you serialize this(Or the better solution) into a binary format that is compact and serializes quickly?

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