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Articles indexed in April 2010

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  • Is the Desktop Becoming Legacy?

    <b>OSNews:</b> "Now with the rise of mobile devices with touchscreen and wireless network connectivity virtually everywhere, the question becomes valid, what will happen with the desktop computers, are they still needed, or will they follow the workstations on their way to computer museums?"

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  • Time to Abandon AIM

    <b>OStatic</b> "AOL has closed the doors on its Open AIM program. Pidgin developer Mark Doliner where to go from here to support AIM, but maybe it's time to close the door on the protocol altogether."

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  • The Power Behind Cloud Computing

    Virtually Speaking: As more enterprises move their apps to a cloud computing environment, data centers will grow bigger and bigger, and how they are powered will be critical. A recent report by Greenpeace International sheds some light.

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  • SCO UNIX problem: "Cannot create /var/adm/utmp or /var/adm/utmpx"

    - by Maktouch
    Hey everyone, I have an old server that doesn't boot. I don't know the version of unix installed, but I see SCO UNIX. It stops with that error: UX:init: ERROR: Cannot create /var/adm/utmp or /var/adm/utmpx UX:init: ERROR: failed write of utmpx entry: " " UX:init: ERROR: failed write of utmpx entry: " " UX:init: INFO: SINGLE USER MODE After that message, it just stops. I cannot write or press anything. Even CTRL + ALT + DEL does not work. I cannot get into the system. I have tried booting with a DamnSmallLinux LiveCD but it does not recognize the file system on HDA. Is there a way to either log in as root or bypass this error? Thanks.

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  • Installing BBC iPlayer Desktop

    - by PhilPursglove
    I'm trying to install the BBC iPlayer Desktop version so I can catch up with a couple of programmes offline, but when I go to the installer here I get a message which says installation failed. There's an error code 2032. Can anyone suggest a solution to this problem?

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  • Android - how to set keystore

    - by teepusink
    Hi, I'm running a sample application that has a map component to it. The app launch find, but I don't see the map loading. I read sometime ago that it might be caused by keystore mismatch? How do I set keystore? Been trying to find it from google and eclipse but can't find where I can change that. Thanks, Tee

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  • Converting back from toString to Object

    - by MontyBongo
    Is there any way to covert from toString back to the object in Java? For example: Map<String, String> myMap = new HashMap<String, String>(); myMap.put("value1", "test1"); myMap.put("value2", "test2"); String str = myMap.toString(); Is there any way to convert this String back to the Map?

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  • linked list elements gone?

    - by Hristo
    I create a linked list dynamically and initialize the first node in main(), and I add to the list every time I spawn a worker process. Before the worker process exits, I print the list. Also, I print the list inside my sigchld signal handler. in main(): head = NULL; tail = NULL; // linked list to keep track of worker process dll_node_t *node; node = (dll_node_t *) malloc(sizeof(dll_node_t)); // initialize list, allocate memory append_node(node); node->pid = mainPID; // the first node is the MAIN process node->type = MAIN; in a fork()'d process: // add to list dll_node_t *node; node = (dll_node_t *) malloc(sizeof(dll_node_t)); append_node(node); node->pid = mmapFileWorkerStats->childPID; node->workerFileName = mmapFileWorkerStats->workerFileName; node->type = WORK; functions: void append_node(dll_node_t *nodeToAppend) { /* * append param node to end of list */ // if the list is empty if (head == NULL) { // create the first/head node head = nodeToAppend; nodeToAppend->prev = NULL; } else { tail->next = nodeToAppend; nodeToAppend->prev = tail; } // fix the tail to point to the new node tail = nodeToAppend; nodeToAppend->next = NULL; } finally... the signal handler: void chld_signalHandler() { dll_node_t *temp1 = head; while (temp1 != NULL) { printf("2. node's pid: %d\n", temp1->pid); temp1 = temp1->next; } int termChildPID = waitpid(-1, NULL, WNOHANG); dll_node_t *temp = head; while (temp != NULL) { if (temp->pid == termChildPID) { printf("found process: %d\n", temp->pid); } temp = temp->next; } return; } Is it true that upon the worker process exiting, the SIGCHLD signal handler is triggered? If so, that would mean that after I print the tree before exiting, the next thing I do is in the signal handler which is print the tree... which would mean i would print the tree twice? But the tree isn't the same. The node I add in the worker process doesn't exist when I print in the signal handler or at the very end of main(). Any idea why? Thanks, Hristo

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  • Can anyone tell me if this is possible to do in Linq?

    - by user275561
    So I have been working and trying for a couple of hours. I am creating a BubbleBreaker type of game. I Can do it using for loop or while but I am trying to also get practice in using Linq. Here is what I am trying to do in pesudo code. Each Bubble has a Column and Row Property. If The bubble subtracts one from its Column property and finds the same Color bubble, it should Select it then Subtract -1 and see if two bubbles away there is also a same color bubble. If there is then subtract -2 and so on. So What I am trying to do is var test= _theBubbles.TakeWhile((i, s) => i.BubbleColor== bubble.BubbleColor)//Then somehow tell it to do bubble.Column-s and then Subtract s from bubble.Column So the Idea is to keep looking down the column till the bubble isnt the same

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  • Attempting to update multiple partial views from a single Ajax.ActionLink

    - by mwright
    I have a a partial view which contains other partial views. I am trying to the main partial view ( "MainPartialView" ) from an Ajax.ActionLink in a partial view contained by the main partial view ( "DetailsView" ). Everything appears to be called just fine and I can step through and it executes all of the code on the pages. However, after that is all done it throws this error in a popup box in visual studio: htmlfile: Unknown runtime error This error puts the break point in the MicrosoftAjax.js file, Line 5, Col 83,632, Ch 83632. Any thoughts? Index Page: <script src="../../Scripts/MicrosoftAjax.js" type="text/javascript"></script> <script src="../../Scripts/MicrosoftMvcAjax.js" type="text/javascript"></script> <ul> <% foreach (DomainObject domainObject in Model) { %> <% Html.RenderPartial("MainPartialView", domainObject); %> <% } %> </ul> MainPartialView: <%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<DomainObject>" %> <li> <div id="<%= Model.Id%>"> <%= Ajax.ActionLink("Details", "PartialViewAction", "PartialViewController", new { id = Model.Id, }, new AjaxOptions { UpdateTargetId ="UpdateTargetId" })%> <% Html.RenderPartial("Details", Model); %> <div id="Details"></div> </div> </li> Details: <%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<DomainObject>" %> <% foreach ( var link in Model.Links) {%> <div> <div> <%= link.Name %> </div> <div> <%= Ajax.ActionLink("Submit this Action", "DoAction", "XTrademark", new { id = Model.TrademarkId, id2 = actionStateLink.ActionStateLinkId }, new AjaxOptions{ UpdateTargetId = Model.TrademarkId.ToString()} )%> </div> </div> <br /> <%} %>

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  • Using a message class static method taking in an action to wrap Try/Catch

    - by Chris Marisic
    I have a Result object that lets me pass around a List of event messages and I can check whether an action was successful or not. I've realized I've written this code in alot of places Result result; try { //Do Something ... //New result is automatically a success for not having any errors in it result = new Result(); } catch (Exception exception) { //Extension method that returns a Result from the exception result = exception.ToResult(); } if(result.Success) .... What I'm considering is replacing this usage with public static Result CatchException(Action action) { try { action(); return new Result(); } catch (Exception exception) { return exception.ToResult(); } } And then use it like var result = Result.CatchException(() => _model.Save(something)); Does anyone feel there's anything wrong with this or that I'm trading reusability for obscurity?

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  • AccessViolationException from a combo: Attempted to read or write protected memory

    - by Sparky
    Users are occassionally getting the above error when using our application (VB.Net, Winforms, using v2 of the framework). I'm not able to reproduce it. The callstack is as follows: : System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. at System.Windows.Forms.UnsafeNativeMethods.CallWindowProc(IntPtr wndProc, IntPtr hWnd, Int32 msg, IntPtr wParam, IntPtr lParam) at System.Windows.Forms.NativeWindow.DefWndProc(Message& m) at System.Windows.Forms.Control.DefWndProc(Message& m) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ComboBox.WndProc(Message& m) at ControlEx.AutoCompleteCombo.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) The code for ControlEx.AutoCompleteCombo.WndProc is as follows: Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message) Try If Not m_fReadOnly Then MyBase.WndProc(m) Else Select Case m.Msg Case WM_LBUTTONDOWN, WM_LBUTTONDBLCLK ' do nothing Case Else MyBase.WndProc(m) End Select End If Catch ex As OutOfMemoryException Throw New OutOfMemoryException("Exception during WndProc for combo " & Me.Name, ex) End Try End Sub The error handling was added so we can determine which combo causes the problem when we get an OutOfMemoryException. Any clues as to what causes this would be muchly appreciated! :-)

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  • Performing complex query with Dynamics CRM 4.0

    - by dub
    Hi, I have two custom entites, Product and ProductType, linked together in many-to-one relationship. Product has a lookup field to ProductType. I'm trying to write a query to fetch Type1 products with a price over 100, and Type2 products with a price lower than 100. Here's how I would do it in SQL : select * from Product P inner join ProductType T on T.Id = P.TypeId where (T.Code = 'Type1' and P.Price >= 100) or (T.Code = 'Type2' and P.Price < 100) I can't figure out a way to build a QueryExpression to do exactly that. I know I could do it with two queries, but I'd like to minimize roundtrips to the server. Is there a way to perform that query in only one operation ? Thanks!

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  • Retrieving data from facebook in a winform

    - by gillyb
    Hey, I understand that using the facebook API I need an api key to connect, but I still don't understand how i would go about doing this, and how can i retrieve information upon users using the API (i'm only interested in retrieving the information that is publicly available e.g: username, birthdate, and other info that a specific user left public) I downloaded the facebook development kit, and tried adding the FacebookService control, but i don't get it... All the examples/samples i found on the internet are older than the version i have and therefore work a little different.. Can someone please post an example of how i would connect, using a certain API key, and retrieve someones public info/public photos (if there are any) ?? Thanks. :)

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  • Web Application Nat Traversal

    - by pbreault
    We are deploying web applications in java using tomcat on client machines across the country. Once they are installed, we want to allow a remote access to these web applications through a central server, but we do not want our clients to have to open ports on their routers. Is there a way to tunnel the http traffic in a way that the central server can access the web application that is behind the firewall ? The central server has a static ip address and we have full control over it. We don't need to access the filesystem, we only want to access the web application itself through a browser.

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  • svndumpfilter2 + Windows HowTo

    - by dr
    How do you get svndumpfilter2 or svndumpfilter3 working in Windows? type dump_file | svndumpfilter2 exclude xyz filtered_dump_file has no idea what svndumpfilter2 is regardless of where I put the script file.

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  • Does RabbitMq do round-robin from the exchange to the queues

    - by Lancelot
    Hi, I am currently evaluating message queue systems and RabbitMq seems like a good candidate, so I'm digging a little more into it. To give a little context I'm looking to have something like one exchange load balancing the message publishing to multiple queues. I don't want to replicate the messages, so a fanout exchange is not an option. Also the reason I'm thinking of having multiple queues vs one queue handling the round-robin w/ the consumers, is that I don't want our single point of failure to be at the queue level. Sounds like I could add some logic on the publisher side to simulate that behavior by editing the routing key and having the appropriate bindings in place. But that's kind of a passive approach that wouldn't take the pace of the message consumption on each queue into account, potentially leading to fill up one queue if the consumer applications for that queue are dead. I was looking for a more pro-active way from the exchange entity side, that would decide where to send the next message based on each queue size or something of that nature. I read about Alice and the available RESTful APIs but that seems kind of a heavy duty solution to implement fast routing decisions. Anyone knows if round-robin between the exchange the queues is feasible w/ RabbitMQ then? Thanks.

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  • What should I really release as open source when I use Berkeley DB (JE)?

    - by Ersin Er
    The Berkeley DB (JE) license information says: "...Redistributions in any form must be accompanied by information on how to obtain complete source code for the DB software and any accompanying software that uses the DB software.... For an executable file, complete source code means the source code for all modules it contains. It does not include source code for modules or files that typically accompany the major components of the operating system on which the executable file runs." If I build an abstraction level on top of BDB JE, should I open source only that library or any software that uses BDB JE indirectly?

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