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  • Multiuser XML document "database" for asp.net app

    - by Pierreten
    I was thinking about a way to allow multiple users to get CRUD access to an XML document in an asp.net app. The operations would obviously have to be made under the assumption of a multithreaded environment. For perf reasons, would it make sense to cache the document, and use a mutex on that cached version? When would changes be flushed to the physical XML document? Any and all recommendations are appreciated (also "use a database" isn't an option at this point unfortunately)

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  • Facebook connect on Google App Engine with Django Patch

    - by yoav.aviram
    We are building a website on Google App Engine, using django patch. We would like to use Facebook connect for two purposes: Authenticate users. Access user's social data. Searching for a solution in the usual places (google, FB, SO) brigs up a lot of noise, many partial solutions and no clear answer. So the question is this: does anyone has a clear working solution? maybe even a recipe? Thanks.

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  • Is there any way to delete an HttpOnly cookie from C# Selenium tests?

    - by BenA
    I have a set of C# Selenium tests that need to delete a cookie that has the HttpOnly flag set. Unfortunately the DefaultSelenium.GetCookie() and DefaultSelenium.DeleteCookie() commands aren't able to access the cookie, because it has that HttpOnly flag set. I've confirmed this by removing the flag by hand, and checking that subsequent calls to either of those methods are then happily able to manipulate the cookie in question. Is there any other way to do this via the Selenium .NET client driver? All ideas welcome!

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  • How many copies of files are needed by video server?

    - by Trilok
    A quick question. How many copies of the same movie are kept in a video server (a video streaming server)? Suppose a particular video is at max requested by 1000 users at the same instant of time, how many copies would be sufficient so that parallel streams can be provided to each user? Ideally 1 copy would solve the purpose, but what is the optimum number keeping the bandwidth and simultaneous access in mind?

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  • Rails Association Question (addendum)...

    - by keruilin
    My original question and accepted solution was posted here: http://stackoverflow.com/questions/2483640/rails-association-question. Check that out first. My follow-up question is this: I want to return an object that has both the user attributes and the race attributes. That way I can access, for example, the user's name and the fastest_time. How can this be accomplished? I've tried several approaches, but none I've been satisfied with.

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  • joomla : authentication

    - by tom
    hi i am new to joomla . i have made a folder in joomla directory and in this folder i have a some file . i want to authenticate these files from direct access using in url by name? how it is possible? help

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  • General confusion with assembler

    - by gnrlcf
    So I took a look at the x86 assembly language; All the commands are pretty clear but: I don't see anything that can actually trigger something in the computer like: Access RAM and not only CPU registers, read from the HDD, etc. How do you go beyond computations in the CPU with assembler?

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  • MKMap showing detail of annotations

    - by yeohchan
    I have encountered a problem of populating the description for each annotation. Each annotation works, but there is somehow an area when trying to click on it. Here is the code. the one in bold is the one that has the problem. -(void)viewDidLoad{ FlickrFetcher *fetcher=[FlickrFetcher sharedInstance]; NSArray *rec=[fetcher recentGeoTaggedPhotos]; for(NSDictionary *dic in rec){ NSLog(@"%@",dic); NSDictionary *string = [fetcher locationForPhotoID:[dic objectForKey:@"id"]]; double latitude = [[string objectForKey:@"latitude"] doubleValue]; double longitude = [[string objectForKey:@"longitude"]doubleValue]; if(latitude !=0 && latitude != 0 ){ CLLocationCoordinate2D coordinate1 = { latitude,longitude }; **NSDictionary *adress=[NSDictionary dictionaryWithObjectsAndKeys:[dic objectForKey:@"owner"],[dic objectForKey:@"title"],nil];** MKPlacemark *anArea=[[MKPlacemark alloc]initWithCoordinate:coordinate1 addressDictionary:adress]; [mapView addAnnotation:anArea]; } } } Here is what the Flickr class does: #import <Foundation/Foundation.h> #define TEST_HIGH_NETWORK_LATENCY 0 typedef enum { FlickrFetcherPhotoFormatSquare, FlickrFetcherPhotoFormatLarge } FlickrFetcherPhotoFormat; @interface FlickrFetcher : NSObject { NSManagedObjectModel *managedObjectModel; NSManagedObjectContext *managedObjectContext; NSPersistentStoreCoordinator *persistentStoreCoordinator; } // Returns the 'singleton' instance of this class + (id)sharedInstance; // // Local Database Access // // Checks to see if any database exists on disk - (BOOL)databaseExists; // Returns the NSManagedObjectContext for inserting and fetching objects into the store - (NSManagedObjectContext *)managedObjectContext; // Returns an array of objects already in the database for the given Entity Name and Predicate - (NSArray *)fetchManagedObjectsForEntity:(NSString*)entityName withPredicate:(NSPredicate*)predicate; // Returns an NSFetchedResultsController for a given Entity Name and Predicate - (NSFetchedResultsController *)fetchedResultsControllerForEntity:(NSString*)entityName withPredicate:(NSPredicate*)predicate; // // Flickr API access // NOTE: these are blocking methods that wrap the Flickr API and wait on the results of a network request // // Returns an array of Flickr photo information for photos with the given tag - (NSArray *)photosForUser:(NSString *)username; // Returns an array of the most recent geo-tagged photos - (NSArray *)recentGeoTaggedPhotos; // Returns a dictionary of user info for a given user ID. individual photos contain a user ID keyed as "owner" - (NSString *)usernameForUserID:(NSString *)userID; // Returns the photo for a given server, id and secret - (NSData *)dataForPhotoID:(NSString *)photoID fromFarm:(NSString *)farm onServer:(NSString *)server withSecret:(NSString *)secret inFormat:(FlickrFetcherPhotoFormat)format; // Returns a dictionary containing the latitue and longitude where the photo was taken (among other information) - (NSDictionary *)locationForPhotoID:(NSString *)photoID; @end

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  • Using NSDictionary throughout an iphone project

    - by Guy
    Hi guys, How do you access a NSDictionary in different NSViewControllers. The NSDictionary was initialized in my delegate file. Do I have to import my delegate file to each view controller file or do all my views on top of my delegate know of my NSDictionary? Do I possibly need to declare my Dictionary in each file? -Thanks Guy

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  • How to inject UrlHelper in MVC using Castle Windsor

    - by zaph0d
    I have a component that has a dependency on UrlHelper that I need to register using Castle Windsor. UrlHelper in turn has depdendencies on RequestContext (and RouteCollection). Now my controller has a Url property of type UrlHelper but cannot really access this as far as I can tell. What is the most efficient way to register my UrlHelper dependency (using fluent configuration)?

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  • Deleteing an image in run time

    - by Nadav Stern
    hey, i am trying to delete an image with the method: (the file path is correct by 100%) if(File.Exists(filePath)) File.Delete(filePath); and i am getting the following exception : An unhandled exception of type 'System.IO.IOException' occurred in mscorlib.dll Additional information: The process cannot access the file 'C:\visual_programming\yad2\yad2\bin\Debug\images\1.jpg' because it is being used by another process. thanks in advance for your help

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  • Facebook status update URL

    - by dandu
    Does Facebook provide a URL the user can access that will take him to his profile page with the "What's on your mind" box auto completed with a value provided in the URL? I need something like "http://facebook.com?status=This is my new status message".

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  • How to add values dynamically to I18n?

    - by Dima Goltsman
    I have many ymls in my rails app, and i want to put some of them in other service, so that i can call this from multiple places. the response of this call will be a hash. {"en" : {"test" : {"text1" : "hi english"}, {"text2" : "mambo number %{num}"} }, "es" : {"test" : {"text1" : "hi espaniol"}, {"text2" : "mamboes numeros %{num}"} } } is there a way i can load that hash into I18n translations like I18n.add_translations(some_hash) so i can access them with I18n.t("test.text1") I18n.t("test.text2", :num => 5) how can i achieve it?

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  • How do I debug a difficult-to-reproduce crash with no useful call stack?

    - by David M
    I am encountering an odd crash in our software and I'm having a lot of trouble debugging it, and so I am seeking SO's advice on how to tackle it. The crash is an access violation reading a NULL pointer: First chance exception at $00CF0041. Exception class $C0000005 with message 'access violation at 0x00cf0041: read of address 0x00000000'. It only happens 'sometimes' - I haven't managed to figure out any rhyme or reason, yet, for when - and only in the main thread. When it occurs, the call stack contains one incorrect entry: For the main thread, which this is, it should show a large stack full of other items. At this point, all other threads are inactive (mostly sitting in WaitForSingleObject or a similar function.) I have only seen this crash occur in the main thread. It always has the same call stack of one entry, in the same method at the same address. This method may or may not be related - we do use the VCL in our application. My bet, though, is that something (possibly quite a while ago) is corrupting the stack, and the address where it's crashing is effectively random. Note it has been the same address across several builds, though - it's probably not truly random. Here is what I've tried: Trying to reproduce it reliably at a certain point. I have found nothing that reproduces it every time, and a couple of things that occasionally do, or do not, for no apparent reason. These are not 'narrow' enough actions to narrow it down to a particular section of code. It may be timing related, but at the point the IDE breaks in, other threads are usually doing nothing. I can't rule out a threading problem, but think it's unlikely. Building with extra debugging statements (extra debug info, extra asserts, etc.) After doing so, the crash never occurs. Building with Codeguard enabled. After doing so, the crash never occurs and Codeguard shows no errors. My questions: 1. How do I find what code caused the crash? How do I do the equivalent of walking back up the stack? 2. What general advice do you have for how to trace the cause of this crash? I am using Embarcadero RAD Studio 2010 (the project mostly contains C++ Builder code and small amounts of Delphi.)

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  • Finalizing a COM object

    - by Neverrav
    I'm trying to implement a singleton class, that holds a com object inside it. Class implements IDisposable interface, but when I try to implement a finalization method, I get an exception of access to com object from another thread. This happens because clr uses a different thread when finalizes objects. Is there any way to implement such a thing or maybe I just doing something wrong?

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  • Logoff User when browser tab page is closed, ASP.NET MVC

    - by Gopinath
    In one of the ASP.NET MVC apps we would like to logoff the user automatically if he closes the browser tab in which the app is opened. We are using the following code when he authenticates. FormsAuthentication.SetAuthCookie(userName, false) As of now, if we closes the browser window and relaunch it, users are asked to authenticate again. But we want to ask users to authenticate again if they close the tab and try to access any of the website urls.

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  • Understanding Ruby class vs instance methods

    - by randombits
    I have the following code: #!/usr/bin/ruby class Person def self.speak p = self.new puts "Hello" p.chatter end private def chatter puts "Chattering" end end p = Person.new Person.speak I'd like to make chatter private, accessible only within p.. but I want p to be able to access it within the class method. Is there a better way to design this so chatter isn't available to the public, but a "factory" method like self.speak can call chatter?

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  • Facebook.php Changed ?

    - by Chris
    I am making my first Facebook App and nothing is working as stated in the documentation. As an example, I have facebook.php on my server and am calling this line: $friends = $facebook->api_client->friends_get(); but I get a "call to undefined function friends_get()" I see that there is no "friends_get()" function in the facebook.php. I do see there is a friends.get in that long array... but I'm not sure how to access it?

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  • Display all images from outside web root folder using PHP

    - by micmola
    Hello, I want to display all images that are stored outside my web root folder. Please help me. I am only able to display one image repeatedly. For example, if I have 5 images in my folder, only one image is displayed on my browser 5 times. Please help me on this. I've been working on this problem for over a month now. I'm a newbie. Help. Thank you. Here is the code I'm using. images.php <?php // Get our database connector require("includes/copta.php"); // Grab the data from our people table $sql = "select * from people"; $result = mysql_query($sql) or die ("Could not access DB: " . mysql_error()); $imgLocation = " /uploadfile/"; while ($row = mysql_fetch_array($result)) { $imgName = $row["filename"]; $imgPath = $imgLocation . $imgName; echo "<img src=\"call_images.php?imgPath=" . $imgName . "\" alt=\"\"><br/>"; echo $row['id'] . " " . $imgName. "<br />"; } ?> call_images.php <?php // Get our database connector require("includes/copta.php"); $imgLocation = '/ uploadz/'; $sql = "select * from people"; $result = mysql_query($sql) or die ("Could not access DB: " . mysql_error()); while ($row = mysql_fetch_array($result)) { $imgName = $row["filename"]; $imgPath = $imgLocation . $imgName; // Make sure the file exists if(!file_exists($imgPath) || !is_file($imgPath)) { header('HTTP/1.0 404 Not Found'); die('The file does not exist'); } // Make sure the file is an image $imgData = getimagesize($imgPath); if(!$imgData) { header('HTTP/1.0 403 Forbidden'); die('The file you requested is not an image.'); } // Set the appropriate content-type // and provide the content-length. header("Pragma: public"); header("Expires: 0"); header("Cache-Control: must-revalidate, post-check=0, pre-check=0"); header("Content-Type: image/jpg"); header("Content-length: " . filesize($imgPath)); // Print the image data readfile($imgPath); exit(); } ?>

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