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  • Detecting I/O errors in a NON BLOCKING SOCKET

    - by ripunjay-tripathi-gmail-com
    I am writing a client - server system in which I used NON-BLOCKING sockets. My problem is to detect error { while performing send() or write() } that may occur while data transfer. Example lets say, while the data is being transferred the peer crashes. Another case there is some network problem, something like wire unplugged etc. As of now, I am using a high level ACK, that peer sends after receiving the complete data. Ripunjay Tripathi

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  • Simplest way to flatten document to a view in RavenDB

    - by degorolls
    Given the following classes: public class Lookup { public string Code { get; set; } public string Name { get; set; } } public class DocA { public string Id { get; set; } public string Name { get; set; } public Lookup Currency { get; set; } } public class ViewA // Simply a flattened version of the doc { public string Id { get; set; } public string Name { get; set; } public string CurrencyName { get; set; } // View just gets the name of the currency } I can create an index that allows client to query the view as follows: public class A_View : AbstractIndexCreationTask<DocA, ViewA> { public A_View() { Map = docs => from doc in docs select new ViewA { Id = doc.Id, Name = doc.Name, CurrencyName = doc.Currency.Name }; Reduce = results => from result in results group on new ViewA { Id = result.Id, Name = result.Name, CurrencyName = result.CurrencyName } into g select new ViewA { Id = g.Key.Id, Name = g.Key.Name, CurrencyName = g.Key.CurrencyName }; } } This certainly works and produces the desired result of a view with the data transformed to the structure required at the client application. However, it is unworkably verbose, will be a maintenance nightmare and is probably fairly inefficient with all the redundant object construction. Is there a simpler way of creating an index with the required structure (ViewA) given a collection of documents (DocA)? FURTHER INFORMATION The issue appears to be that in order to have the index hold the data in the transformed structure (ViewA), we have to do a Reduce. It appears that a Reduce must have both a GROUP ON and a SELECT in order to work as expected so the following are not valid: INVALID REDUCE CLAUSE 1: Reduce = results => from result in results group on new ViewA { Id = result.Id, Name = result.Name, CurrencyName = result.CurrencyName } into g select g.Key; This produces: System.InvalidOperationException: Variable initializer select must have a lambda expression with an object create expression Clearly we need to have the 'select new'. INVALID REDUCE CLAUSE 2: Reduce = results => from result in results select new ViewA { Id = result.Id, Name = result.Name, CurrencyName = result.CurrencyName }; This prduces: System.InvalidCastException: Unable to cast object of type 'ICSharpCode.NRefactory.Ast.IdentifierExpression' to type 'ICSharpCode.NRefactory.Ast.InvocationExpression'. Clearly, we also need to have the 'group on new'. Thanks for any assistance you can provide. (Note: removing the type (ViewA) from the constructor calls has no effect on the above)

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  • Visual Studio 2010 - service pack 1

    - by Jinath Sanjitha
    Hi, Does anybody knows when will Microsoft release (in their plans or in roadmaps) a 'service pack' for Visual Studio 2010. I know it's too early to ask, but my client requires a stable release of VS 2010 + .Net 4.0 before going into development of his project. Thanks.

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  • Which CMS plugins for Wordpress should I use?

    - by abeger
    I'm looking into setting up a very simple site (static pages and an image gallery) with Wordpress for a non-web-savvy client, so I'd like to simplify the Editor role's admin interface as much as possible. Looking through Wordpress's plugin directory, I found several plugins that "CMS-ify" the admin side of things, hiding menu options and the like. Are there any "admin-cleaning" plugins you'd recommend? Are there any other plugins I should look into?

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  • Processing: popen() call to start subprocess?

    - by Mark Harrison
    Here's an example of opening and reading data from a TCP socket. Is there a a popen() call or equivalent that can start a child process and read its output? void setup() { c = new Client(this, "127.0.0.1", 12345); // Replace with your server's IP and port } void draw() { if (c.available() > 0) { input = c.readString(); http://www.processing.org/learning/libraries/sharedcanvasclient.html

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  • SignOut() without postback in ajax login

    - by Romi
    Hi, I have one asp.net Ajax Login using webservices. In this login i call the loogout() client side from hyperlink: Sys.Services.AuthenticationService.logout(null,onLogoutCompleted,null,null); return false; My Webservice make : [WebMethod] public void Logout() { FormsAuthentication.SignOut(); } logout work but my page make one big postback. Some way to make NO postback at logout? Thanks

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  • How to send IM message like Skype in Android ?

    - by mob-king
    I have to build a feature in my application which allows user to send a skype message. For this I have installed skype lite client for Android (although offically the download has been currently withdrawn from Skype). Now how to initiate the activity from my application OR simply send the chat message without bringing it front, assuming I have skype installed in Android & also signed in already. Any help ? Thanks.

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  • Installation doesn't recognize SQL server 2008 saying Server components not found

    - by Aarthi
    Please answer these 2 questions: Our installation is not recognising the SQL server 2008 and if we try to create a DB, its telling Server components not found. Please tell what may be the issue and why it's not recognising. But our installation proceeds as client installation(if i point to the same instance with DB already created) without any issues. Can we install SQL express 2005 in a machine where SQL server 2008 is already installed. Please clarify.

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  • media center extended

    - by Gil Montag
    Hi, Where can I find resources related to writing your own media center extender client - i.e. an application that will run on another machine at home and remotely render vista's media center on it, allowing to stream movies, live tv etc Thanks, Gil

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  • java asynchronous task.

    - by Tony
    For some of HTTP requests from clients, there was very complex business logic in server side. Some of these business logics doesn't require to response to the client immediately, like sending a email to somebody. Can I put those tasks in an asynchronous method.

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  • Is there a way to detect when a WSS default.aspx page is updated?

    - by Alan
    That is detect when the user makes web part changes and selects to exit editing the page. I want to be able to capture a page event, then create a SharePoint task to instruct a user to translate that page to another language (note that MOSS and variations is not an option because the client wants to use the free version of SharePoint). So the customer wants essentially the same WSS site in multiple languages.

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  • Terminology for mobile computing with a tablet?

    - by Idrise_Coulombe
    This is more of a terminology question... I'm developing an occasionally connected application that will run on a tablet for clinicians or field service workers but I'm struggling with what this type of computing is referred to. Mobile computing as connotations of a phone app. Whereas our clients may be occasionally at their desk. Microsoft uses Smart Client a lot, but I'm not sure if that best describes this scenario or is the common term for this kind of computing.

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  • some userful 3rd party API's for j2me

    - by Vivart
    Fixed Point Integer Math MathFP kSOAP is a SOAP web service client library for constrained Java environments such as Applets or J2ME applications (CLDC / CDC / MIDP). http://sourceforge.net/projects/ksoap2/ kXML is a lean Common XML API with namespace and WAP support that is intended to fit into the JAVA KVM for limited devices like the Palm Pilot. http://sourceforge.net/projects/kxml/ UI library https://lwuit.dev.java.net/ http://www.j2mepolish.org/cms/

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  • What is the difference between a "service account" and an "installed application"?

    - by TheBeatlemaniac
    To my understanding, the main difference is that a service account doesn't require a user to log in for authorization, while an installed application does. I am making an Android app (an "installed application"?) that offers an in-app subscription, and doesn't require the user to log in to an account (a "service account"?). To get a Client ID for the Google Play Developer API, I have to declare it as either an installed application or a service account, and am unsure which to go with.

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  • How does Microsoft generate the Event ID for winqual events?

    - by Tim
    I am curious about the IDs that are used to identify items in winqual. I assume it is some sort of hash. Is this published? Hash of the module name, its version and an offset? That seems appropriate but the size is too small to cover the possibilities unless some truncation/lossy algorithm is used. This seems to be generated with the minidump on the client machine.

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  • Live javascript debugging by recording function calls and parameters

    - by Jenko
    Is there a debugging system that allows me to record javascript function calls and their parameters as they occur? this would allow me to trace and debug applications in live/client situations without the performance hit due to manual logging. Edit: I'm not talking about manually calling functions using a 'console' window and viewing the results, or manually adding 'trace' or 'log' commands into my javascript. I need it to work with any running javascript.

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  • Dealing with development and large javascript files?

    - by maxp
    When dealing with websites with large amount of javascript, i see that these are still usually served to the client as one large javascript file. In the development phase, are the javascript files usually split up (say there are 300 lines of js) to make things abit more manageable, and then merged when the website is 'put live'? Or do the developers just put up with working in one long large file?

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  • Google Docs iphone library error reporting

    - by phil harris
    I'm in the process of adding a Google Docs interface to my iPhone app, and I'm largely following the example in the GoogleDocs.m file from Tom Saxton's example app. The objective-c library I'm using is from http://code.google.com/p/gdata-objectivec-client/wiki/GDataObjCIntroduction The library file used is from gdata-objectivec-client-1.10.0.zip. This service:username:password method is a slight variant of the one found in the Saxton file GoogleDocs.m starting at line 351: - (void)service:(NSString *)username password:(NSString *)password { if(service == nil) { service = [[[GDataServiceGoogleDocs alloc] init] autorelease]; [service setUserAgent:s_strUserAgent]; [service setShouldCacheDatedData:NO]; [service setServiceShouldFollowNextLinks:NO]; (void)[service authenticateWithDelegate:self didAuthenticateSelector:@selector(ticket:authenticatedWithError:)]; } // update the username/password each time the service is requested if (username != nil && [username length] && password != nil && [password length]) [service setUserCredentialsWithUsername:username password:password]; else [service setUserCredentialsWithUsername:nil password:nil]; } // associated callback for service:username:password: method - (void)ticket:(GDataServiceTicket *)ticket authenticatedWithError:(NSError *)error { NSLog(@"%@",@"authenticatedWithError called"); if(error == nil) [self selectBackupRestore]; else { NSLog(@"error code(%d)", [error code]); NSLog(@"error domain(%d)", [error domain]); NSLog(@"localizedDescription(%@)", error.localizedDescription); NSLog(@"localizedFailureReason(%@)", error.localizedFailureReason); NSLog(@"localizedRecoveryOptions(%@)", error.localizedRecoveryOptions); NSLog(@"localizedRecoverySuggestion(%@)", error.localizedRecoverySuggestion); } } Please note the service:username:password method and the callback compile and run fine. The problem is that the callback is passing a non-nil NSError object. I added an NSLog() for every error reporting attribute of NSError and the (Xcode) log output of a test run is below. [Session started at 2010-05-27 12:27:16 -0700.] 2010-05-27 12:27:38.778 iFilebox[74596:207] authenticatedWithError called 2010-05-27 12:27:38.779 iFilebox[74596:207] error code(-1) 2010-05-27 12:27:38.780 iFilebox[74596:207] error domain(499324) 2010-05-27 12:27:38.781 iFilebox[74596:207] localizedDescription(Operation could not be completed. (com.google.GDataServiceDomain error -1.)) 2010-05-27 12:27:38.782 iFilebox[74596:207] localizedFailureReason((null)) 2010-05-27 12:27:38.782 iFilebox[74596:207] localizedRecoveryOptions((null)) 2010-05-27 12:27:38.783 iFilebox[74596:207] localizedRecoverySuggestion((null)) My essential question is in the error reporting. I was hoping the localizedDescription would be more specific of the error. All I get for the error code value is -1, and the only description of the error is "Operation could not be completed. (com.google.GDataServiceDomain error -1.". Not very helpful. Does anyone know what a GDataServiceDomain error -1 is? Where can I find a full list of all error codes returned, and a description of what they mean?

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  • Wcf service operation contract change

    - by pdiddy
    I recently added a parameter to one of the method of a wcf. It was a string parameter. The thing is that I didn't update the service reference on the client side but I was still able to call the wcf service ..... Wasn't it suppose to break?

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  • python hbase exception

    - by kula
    when i use client.mutateRow(self.tableName, row, mutations) to write data to hbase . there is a exception, IOError: IOError(message="Trying to contact region server Some server, retryOnlyOne=true, index=0, islastrow=true, tries=9, numtries=10, i=0, listsize=1, region=test,,1276665207312 for region test,,1276665207312, row 'hello', but failed after 10 attempts.\nExceptions:\n") i use http://pypi.python.org/pypi/hbase-thrift/0.20.4 to write hbase. seems it is a library bug. anyone can help me ?

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  • CompareValidator issue on Firefox

    - by costin
    Hi, I need to validate a date in a web forms application. For this I use a CompareValidator with Operator="DataTypeCheck" Type="Date" The problem is that this Validator doesn't work properly on Firefox with 2 digit years. ( javascript error: m[2] is undefined) With a 4 digits year it's working properly. This problem is described also here: https://connect.microsoft.com/VisualStudio/feedback/details/355573/comparevalidator-client-side-bug-two-digit-year-in-mozilla-based-browsers-throws-js-exception Does anyone know a nice workaround for this? Thanks

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