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• how to store dynamically generated pages in html?

  - by Dharmik Bhandari

  I'm working on ASP.net MVC3 Web application that is facing scalability issue. For improving performance I want to store dynamically generated pages in html and serve them from generated html directly rather then querying database for each page request. I'm sure this will dramatically increase performance. Can any one share any hint / example / tutorial on how to do it? And what are challenges? I would also like to know how others are handling performance issue for large e-commerce sites with at-least thousand categories and 200k products with at least 200-500 concurrent visitors? What are the best approaches? Thanks in advance.

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• Painting to Form then to Printer

  - by jp2code

  I often find myself needing to create custom reports that do NOT work with Crystal Reports or Report Viewer. Often, I hack a DataTable together and dumping that into a DataGridView control. It is never pretty, and printing is difficult. What I need is a class that I can call using the OnPaint event, but I've never sat down and written all of the Pen and Brush commands until now. Painting to the screen and painting to a printer both use the Graphics object, so I want to build a class that I'd pass in the Graphics object, my window bounds (a Rectangle), and some data (in the form of an instance of my class) that I'd use to paint a form or a sheet of paper. That sounds like a great concept! Surely, someone has done something like this before. Does anyone know of a book, a website tutorial, or video that goes into this? If someone wants to write all that out for me here, more power to you - but I'd think that would be too much work.

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• Which build tool to teach?

  - by Helper Method

  While similiar questions have been asked, this one's focused on which is best/easiest to teach. I'm giving a weekly tutorial at my university focusing on data structures and algorithms. Fromn time to time I introduce tools which may prove helpful in future projects like JUnit, Mercurial, Eclipse etc.. I plan to show them some kind of build tool but I'm not sure which one to choose. I by myself have very little knowledge about build tools, except a little experience in using make. It's more the concept of a build tool I want to show them, not a special tool per se. Which would be the most easiest/future proof/whatever tool to show them? I've read a little bit about Gradle, which looks nice, but so far I think Ant could be a good choice (it's a Java course I'm giving).

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• Visual Studio CLR project

  - by Vit

  Hi, so I wanted to try my first CLR project in Visual C++. So I created console project, but since every tutorial I found about CLR programming was using C#, or windows forms, I just tried writing standart c++ Hello Word app using iostream (I think code isnt needed in this case) but I though it will give me some compile error, since iostream uses precompiled functions, and CLR app compiles into MSIL. I assumed that CLR programming using C++ means just using C++ syntax, but different functions for I/O and so. So, basicly, what I want to ask is, can any native console C++ app be compiled into MSIL and run by .NET framework?

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• How does git save space and is fast at the same time?

  - by eSKay

  I just saw the first git tutorial at http://blip.tv/play/Aeu2CAI How does git store all the versions of all the files and still be more economical in space than subversion which saves only the latest version of the code? I know this can be done using compression but that would be at the cost of speed, but this also says that git is much faster (though where is gains the max is the fact that most of its operations are offline). So, my guess is that git compresses data extensively it is still faster because uncompression + work is still faster than network_fetch + work Am I correct? even close?

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• How to install the .app file in to iphone device ?

  - by balraj

  hi , I have an .app file and the provisional profile this also contain the devices that has been bounded at the creating of this provisional profile when i use to compile it and install in the iphone via XCODE than it goes successfully in the iphone without any problem with this provisional profile. But when i remove the all provisional and the app file from the iphone and pick the app file and provisional and install it via itunes through a window system it shows me the code sign error even when i sync the iphone through the itunes it get install the provisional in the iphone but unable to install the app file. Is there any proper way via which i can install it on window or any other OS without any fail or any tutorial .. Thanks

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• fb:comment does not work on my application

  - by giffary

  hello! I'm new for facebook developer. I want to add comments box to my application and I follow the tutorial in facebook wiki. It's not work in my application. My Canvas Callback URL is http://122.155.0.71/~facebook/ and I upload xd_receiver.htm to root directory. and I paste the code FB.init("b6e07896a1d0889d9784dea150802587", "/xd_receiver.htm"); to my application. It not show up. When I view this page with firebug. I see . I don't know about xid, where can I create it. Can you help me about this problem? thank you...

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• UIImageView "Sprite Movement" How?

  - by Tate Allen

  Hi all, I am trying to make a game for the iPhone/iPod Touch. I am somewhat new to iPhone programming and extremely new to iPhone game programming so try to bear with me if this is a stupid question. How to I make my character, a UIImageView, move to the right or left, along the x axis. Just a simple translation across the screen. This is very frustrating so if you could link me to a tutorial or something like that, it would be much appreciated. Thanks in advance, Tate

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• Deriving PathInfo class in web routes?

  - by drozzy

  I am reading the web-routes tutorial in Happstack, and I have no idea what this is doing: $(derivePathInfo ''Sitemap) class PathInfo a where toPathSegments :: a -> [String] fromPathSegments :: URLParser a The doc simply says: we use template-haskell to derive an instance of PathInfo for the Sitemap type. but where does it "store" it? I thought haskell had no state, and is PathInfo our own thing, or is it part of happstack? If someone could explain this, for dummies? Thanks.

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• loading files in prolog

  - by cubearth

  hey guys, am a bit of a newbie in Prolog. And am going thru this tutorial on line and it is telling me i can load other prolog files by typing: [filename]. but ever time I try this am getting ERROR: load_files/2: Arguments are not sufficiently instantiated. What am i doing wrong? P.S. the file is in the same directory as the one am working in. and here is a copy of the entire query and error. 12 ?- [KB5]. ERROR: load_files/2: Arguments are not sufficiently instantiated

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• programmatically creating property list from json to include an array

  - by Michael Robinson

  [{"memberid":"18", "useridFK":"30", "loginName":"Johnson", "name":"Frank", "age":"23", "place":"School", },] Someone else posted a similar question but without the fact that it was coming from a JSON deserialization. Quinn had some suggestions but it was confused about where to place/replace the following code (if it's correct): NSDictionary *item1 = [NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:@" member",[NSNumber numberWithInt:3],nil] forKeys:[NSArray arrayWithObjects:@"Title",@"View",nil]]; into this: NSData *jsonData = [jsonreturn dataUsingEncoding:NSUTF32BigEndianStringEncoding]; NSError *error = nil; NSDictionary * dict = [[CJSONDeserializer deserializer] deserializeAsDictionary:jsonData error:&error]; if (dict) { rowsArray = [dict objectForKey:@"member"]; [rowsArray retain]; } My Array.plist needs to look like the following: Root: Dictionary V Rows: Array V Item 0: Dictionary Title: String 18 V Children Array V Item 0 Dictionary Title String 30 etc. Thanks in advance. Every tutorial on JSON only shows a simple array being returned, never a 2-D..It's driving me crazy trying to figure this out.

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• building a web application in eclipse

  - by Noona

  As a concluding assignment for the technologies taught in a data management course, we have to write a web application using the technologies taught throughout the course, this mostly includes xhtml, css, JSP, servelets, JDBC, AJAX, webservices. the project will eventually be deployed using tomcat. we are given the option of choosing the technologies that we see fit. since this is my first time developing a web application I am having some uncertainties about where to start, so for example now I am writing the object classes that will be used in the database and implementing the operations that will be performed on the database, but I am not sure about how to make these operations available to a client through the website, I mean I think I have to write a servlet through which I can extract the request parameters and set the response accordingly, but I would still like a more specific overview of what I am going to do, so if someone can link me to a tutorial with an example that makes use of these technologies while illustrating the stages of the design so that I can see how all these things are linked together in a web project. thanks

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• Linking Libraries in Xcode

  - by Dan

  Hey all, I'm using a powerbook (osx 10.5) and recently downloaded and installed FFTW 3.2 (link text). I've been able to compile and run some simple programs based on the online tutorial using the terminal: g++ main.cpp -lfftw3 -lm however, I can't get the same program to compile in Xcode. I get a linking error, "symbol(s) not found". There is a file called libfftw3.a in /usr/local/lib. How can this be linked? Furthermore, apparently the libraries have to be linked in a particular order, i.e. see: link text thanks for any help

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• load table data on jsp using struts2 with fixed table structure

  - by Zahra

  Hi. I want to have a fixed table structure on my jsp page(3row, 4column). but I want to load data for this table from DataBase with using struts 2. I know if my table structure wasn't fixed I could have just get a List and iterate on it and add a data in every iteration, but how could I do this in this case. also if I don't have enough data to fill table, I want those places to be empty. I didn't find a good example, if you could help me or introduce me a good tutorial, it would be really appreciated. Thanks in advance.

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• Why did Steve Sanderson in his "Pro ASP.NET MVC 2 Framework" book change an example IoC container?

  - by rem

  I like Steve Sanderson's "Pro ASP.NET MVC Framework" book. It helped me a lot. I have been waiting for its new edition and it is ready now, as we can see in this Steve's blog post It is updated a lot taking into account all new features of ASP.NET MVC 2, .NET 4 and Visual Studio 2010. In addition, "SportsStore" tutorial of this edition uses Ninject instead of first edition's Castle Windsor for DI. I wonder, why? Does it mean that Castle Windsor became a little outdated?

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• cahoots - zend framework application is not running

  - by Gaurav Sharma

  hello everyone, I downloaded cahoots from sourceforge.net. It is a zend framework application. Very nicely done and I must say that it should be a nice tutorial for everyone who is struggling to learn Zend framework. But my problem is that even after reading the instructions this application is still not running. The application just doesn't run at all giving an error message. I have tried my best. no success :( Also I wanted to execute the application as "http://localhost/cahoots" but it runs by this URL "http://localhost/cahoots/public". why is it so.? I am using XAMPP v 1.7.1 with mod-rewrite enabled. Please guide me through the process. Any good tutorials on zend framework with zend tool would be appreciable. I want to learn this framework. Thanks

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• Windows Azure: Exception while creating a blob container

  - by veda

  I followed a tutorial on creating a blob on windows azure. But when I do that, I get an exception error: Error while creating containerThe server encountered an unknown failure: The remote server returned an error: (300) Ambiguous Redirect. The code is : private void SetContainersAndPermission() { try { // create a container var CloudAccountStorage = CloudStorageAccount.FromConfigurationSetting("BlobConnectionString"); cloudBlobClient = CloudAccountStorage.CreateCloudBlobClient(); CloudBlobContainer blobContainer = cloudBlobClient.GetContainerReference("documents"); blobContainer.CreateIfNotExist(); // permissions var containerPermissions = blobContainer.GetPermissions(); containerPermissions.PublicAccess = BlobContainerPublicAccessType.Container; blobContainer.SetPermissions(containerPermissions); } catch(Exception ex) { throw new Exception("Error while creating container" + ex.Message); } } Can anyone tell me How to solve this problem....

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• Extremely basic PHP and Mysql

  - by fighella

  Background: I am more of a designer than a programmer, but have hacked templates for many open source CMS's (Drupal, Joomla, Wordpress) I want to start from scratch in regards to the relations of php and a mysql database. Lets assume I have a working database and php engine locally. What would be my first step to connecting to my database and creating a table... (im happy to be led to an appropriate tutorial...) Many of the tutorials I have seen start with basic php, but I would rather explore the connection between the db and the php.

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• Auto update CSS from SASS/SCSS in Rails?

  - by Vulgrin

  Maybe I'm confused on how SASS/SCSS works within Rails (2.3.8.) but I was under the impression that if I included the option Sass::Plugin.options[:always_update] = true that whenever I changed my SCSS file and then hit the page (controller) again, the SCSS would recompile. I can't seem to get this to work, and can't seem to find a good tutorial / example for it. I've tried setting the above property in the Environment.rb file, but it didn't seem to do anything. I tried putting it in its own initializer with require 'sass' but that doesn't seem to work either. What am I missing? Or am i just forced to keep a terminal open with a sass --watch command running to be able to rapidly debug / change my styles? thx

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• Doctrine Join DQL

  - by koko

  I's like to do a join between 2 tables on a specific ID. At the moment, I have this DQL: $q = Doctrine_Query::create() ->select('e.*, i.itemName, i.itemtypeId') ->from('Model_EventItem e') ->leftJoin('Model_Item i ON e.itemId = i.itemId') ->where('e.eventitemId = ?', $event->eventId) ->orderBy('i.itemName ASC'); The result is empty, although my eventId has a value ... Can you help me please? I there somewhere a tutorial on DQL-joins? I don't get it right with the help of the Doctrine documentation. Thanks! PS I have doctrine working in combination with Zend Framework.

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• google calendar API in iPhone app!

  - by totato

  I just add gcal to my project according to this tutorial http://www.youtube.com/watch?v=it_9H0GxRNI but 12 errors is appeared: "_SecItemAdd", referenced from: -[GDataOAuthKeychain setPassword:forService:account:error:] in GDataOAuthViewControllerTouch.o "_kSecMatchLimit", referenced from: _kSecMatchLimit$non_lazy_ptr in GDataOAuthViewControllerTouch.o "_kSecClassGenericPassword", referenced from: _kSecClassGenericPassword$non_lazy_ptr in GDataOAuthViewControllerTouch.o "_SecItemDelete", referenced from: -[GDataOAuthKeychain removePasswordForService:account:error:] in GDataOAuthViewControllerTouch.o "_kSecAttrGeneric", referenced from: _kSecAttrGeneric$non_lazy_ptr in GDataOAuthViewControllerTouch.o "_SecItemCopyMatching", referenced from: -[GDataOAuthKeychain passwordForService:account:error:] in GDataOAuthViewControllerTouch.o "_kSecValueData", referenced from: _kSecValueData$non_lazy_ptr in GDataOAuthViewControllerTouch.o "_kSecReturnData", referenced from: _kSecReturnData$non_lazy_ptr in GDataOAuthViewControllerTouch.o "_kSecAttrAccount", referenced from: _kSecAttrAccount$non_lazy_ptr in GDataOAuthViewControllerTouch.o "_kSecClass", referenced from: _kSecClass$non_lazy_ptr in GDataOAuthViewControllerTouch.o "_kSecAttrService", referenced from: _kSecAttrService$non_lazy_ptr in GDataOAuthViewControllerTouch.o "_kSecMatchLimitOne", referenced from: _kSecMatchLimitOne$non_lazy_ptr in GDataOAuthViewControllerTouch.o ld: symbol(s) not found collect2: ld returned 1 exit status Build failed (12 errors, 1 warning) And no errors appears in console! what is the problem? :(

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• Socket programming and telnet with VB.net

  - by Mike

  I'm writing a GUI-based app in VB.net that talks to a LambdaMOO server via telnet, sends commands to display the object hierarchy, then parses the output and creates a visual representation of the object hierarchy. So my question is: is there some kind of "telnet client" class for .NET to simplify the sending and receiving of data, or do I have to write my own using the socket API? Does Mono have something like this? Barring an easy solution, does anyone have a good tutorial they can point to for telnet client programming in VB.net?

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• ADT will not allow creation of Android Activity

  - by NewShelbyWoo

  I installed the ADT bundle from http://developer.android.com/sdk/index.html yesterday, and I was following a basic Hello World tutorial. I created a new Android Application Project with a Blank Activity named MainActivity. The resulting project has an empty src folder and empty res\layout folder. There is a R.java file in the gen folder but it has no reference to MainActivity. This is what the SDK manager says I have installed Android SDK Tools v 22.6 Android SDK Platform-tools v 19.0.1 Android SDK Build-tools v 19 SDK Platform v 3 ARM EABI v7a System Image v 2 Android Support Library v 19.0.1 Google USB Driver v 9 I also tried manually creating an activity by right clicking the src folder and going to Android Activity, but when I hit Finish on the creation wizard, nothing happens. Does anyone have any clues as to what's going on? Did I miss a key component to install or something?

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• Trouble Avoiding Microsoft Outlook's Email Warning

  - by talbright

  I have a set of records in Microsoft Access that I am trying to send in an Email. The email feature works great. Except a warning message pops up every time a message is ready to send, and the user has to click "Allow" or "Deny" for every email sent. I looked up a workaround, and have been following the tutorial for it: http://www.everythingaccess.com/tutorials.asp?ID=Outlook-Send-E-mail-Without-Security-Warning. My problem is that when I put my message in the function it always returns false, and the message fails. Any help would be appreciated. Dim sendMail As Boolean Dim strMessage As String strMessage = Some Message sendMail = FnSafeSendEmail(![Email Id], "Subject", strMessage) The entire "FnSafeSendEmail" function can be found in the link provided. These are the parameters though. Public Function FnSendMailSafe(strTo As String, _ strCC As String, _ strBCC As String, _ strSubject As String, _ strMessageBody As String, _ Optional strAttachments As String) As Boolean The error is thrown on this line of the function. Dim blnSuccessful As Boolean blnSuccessful = objOutlook.FnSendMailSafe(strTo, strCC, strBCC, _ strSubject, strMessageBody, _ strAttachmentPaths)

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• how can get data from another Table

  - by Pushpendra Kuntal

  I am designing a project in asp.net mvc3, i have designed my database in sql server, add i am using ado.net. This is my controller action public ViewResult ProductFormulationIndex() { return View(db.ProductFormulation.ToList()); } means i want to display all fields of ProductFormulation table. this is my table:- and this is my productCategory Table in my ProductFormulationIndex.cshtml i want to display Code of ProductCategory Table, not only id. So what should i do in controller or in Model for it ? you may suggest tutorial related to it. Thanks in advance.

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