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  • How do one improve him/her problem-solving ability ?

    - by gcc
    How can one improve him/her problem-solving ability? Every one says same thing "a real programmer knows how to handle real problem", but they forget how they learn this ability, or where (I know in school, no one gives us any ability, of course in my opinion). If you have any idea except above ones, feel free when you give your advice solve more problems do more exercises, write code, search google then write more ... For me, my question is like "Use complex/known library instead of using your own." In other words,t I want your presonal experience, book recommendation, web page on problem solving. Moreover, look your problem-solving method and give us your personal ability as if it is an algorithm

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  • Mixing Objective-C and C++: Game Loop Parts

    - by Peteyslatts
    I'm trying to write all of my game in C++ except for drawing and game loop timing. Those parts are going to be in Objective-C for iOS. Right now, I have ViewController handling the update cycle, but I want to create a GameModel class that ViewController could update. I want GameModel to be in C++. I know how to integrate these two classes. My problem is how to have these two parts interact with the drawing and image loading. GameModel will keep track of a list of children of type GameObject. These GameObjects update every frame, and then need to pass position and visibility data to whatever class or method will handle drawing. I feel like I'm answering my own question now (talking it out helps) but would it be a good idea to put all of the visible game objects into an array at the end of the update method, return it, and use that to update graphics inside ViewController?

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  • WPF Login Verification Using Active Directory

    - by psheriff
    Back in October of 2009 I created a WPF login screen (Figure 1) that just showed how to create the layout for a login screen. That one sample is probably the most downloaded sample we have. So in this blog post, I thought I would update that screen and also hook it up to show how to authenticate your user against Active Directory. Figure 1: Original WPF Login Screen I have updated not only the code behind for this login screen, but also the look and feel as shown in Figure 2. Figure 2: An Updated WPF Login Screen The UI To create the UI for this login screen you can refer to my October of 2009 blog post to see how to create the borderless window. You can then look at the sample code to see how I created the linear gradient brush for the background. There are just a few differences in this screen compared to the old version. First, I changed the key image and instead of using words for the Cancel and Login buttons, I used some icons. Secondly I added a text box to hold the Domain name that you wish to authenticate against. This text box is automatically filled in if you are connected to a network. In the Window_Loaded event procedure of the winLogin window you can retrieve the user’s domain name from the Environment.UserDomainName property. For example: txtDomain.Text = Environment.UserDomainName The ADHelper Class Instead of coding the call to authenticate the user directly in the login screen I created an ADHelper class. This will make it easier if you want to add additional AD calls in the future. The ADHelper class contains just one method at this time called AuthenticateUser. This method authenticates a user name and password against the specified domain. The login screen will gather the credentials from the user such as their user name and password, and also the domain name to authenticate against. To use this ADHelper class you will need to add a reference to the System.DirectoryServices.dll in .NET. The AuthenticateUser Method In order to authenticate a user against your Active Directory you will need to supply a valid LDAP path string to the constructor of the DirectoryEntry class. The LDAP path string will be in the format LDAP://DomainName. You will also pass in the user name and password to the constructor of the DirectoryEntry class as well. With a DirectoryEntry object populated with this LDAP path string, the user name and password you will now pass this object to the constructor of a DirectorySearcher object. You then perform the FindOne method on the DirectorySearcher object. If the DirectorySearcher object returns a SearchResult then the credentials supplied are valid. If the credentials are not valid on the Active Directory then an exception is thrown. C#public bool AuthenticateUser(string domainName, string userName,  string password){  bool ret = false;   try  {    DirectoryEntry de = new DirectoryEntry("LDAP://" + domainName,                                           userName, password);    DirectorySearcher dsearch = new DirectorySearcher(de);    SearchResult results = null;     results = dsearch.FindOne();     ret = true;  }  catch  {    ret = false;  }   return ret;} Visual Basic Public Function AuthenticateUser(ByVal domainName As String, _ ByVal userName As String, ByVal password As String) As Boolean  Dim ret As Boolean = False   Try    Dim de As New DirectoryEntry("LDAP://" & domainName, _                                 userName, password)    Dim dsearch As New DirectorySearcher(de)    Dim results As SearchResult = Nothing     results = dsearch.FindOne()     ret = True  Catch    ret = False  End Try   Return retEnd Function In the Click event procedure under the Login button you will find the following code that will validate the credentials that the user types into the login window. C#private void btnLogin_Click(object sender, RoutedEventArgs e){  ADHelper ad = new ADHelper();   if(ad.AuthenticateUser(txtDomain.Text,         txtUserName.Text, txtPassword.Password))    DialogResult = true;  else    MessageBox.Show("Unable to Authenticate Using the                      Supplied Credentials");} Visual BasicPrivate Sub btnLogin_Click(ByVal sender As Object, _ ByVal e As RoutedEventArgs)  Dim ad As New ADHelper()   If ad.AuthenticateUser(txtDomain.Text, txtUserName.Text, _                         txtPassword.Password) Then    DialogResult = True  Else    MessageBox.Show("Unable to Authenticate Using the                      Supplied Credentials")  End IfEnd Sub Displaying the Login Screen At some point when your application launches, you will need to display your login screen modally. Below is the code that you would call to display the login form (named winLogin in my sample application). This code is called from the main application form, and thus the owner of the login screen is set to “this”. You then call the ShowDialog method on the login screen to have this form displayed modally. After the user clicks on one of the two buttons you need to check to see what the DialogResult property was set to. The DialogResult property is a nullable type and thus you first need to check to see if the value has been set. C# private void DisplayLoginScreen(){  winLogin win = new winLogin();   win.Owner = this;  win.ShowDialog();  if (win.DialogResult.HasValue && win.DialogResult.Value)    MessageBox.Show("User Logged In");  else    this.Close();} Visual Basic Private Sub DisplayLoginScreen()  Dim win As New winLogin()   win.Owner = Me  win.ShowDialog()  If win.DialogResult.HasValue And win.DialogResult.Value Then    MessageBox.Show("User Logged In")  Else    Me.Close()  End IfEnd Sub Summary Creating a nice looking login screen is fairly simple to do in WPF. Using the Active Directory services from a WPF application should make your desktop programming task easier as you do not need to create your own user authentication system. I hope this article gave you some ideas on how to create a login screen in WPF. NOTE: You can download the complete sample code for this blog entry at my website: http://www.pdsa.com/downloads. Click on Tips & Tricks, then select 'WPF Login Verification Using Active Directory' from the drop down list. Good Luck with your Coding,Paul Sheriff ** SPECIAL OFFER FOR MY BLOG READERS **We frequently offer a FREE gift for readers of my blog. Visit http://www.pdsa.com/Event/Blog for your FREE gift!

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  • Java Transaction Service without the application server

    - by johnny
    Is it possible to have a Java standalone application (no application server attached) that exposes some operations that a client can call and be the one to manage the transactions? I was thinking this application to expose JNDI resources and get a hold of a java:comp/UserTransaction from there, get also a bean from there and call methods A, B and C on it and coordinate the transaction from the client? The application I'm writing isn't complex enough so that I need a big application server around it so I'm thinking to have a standalone JTS inside it that the client could interact with from a transactions point of view. I don't have much experience with distributed transactions and don't really know how to tackle the issue. Is it even possible? Am I getting myself into something beyond what a mere mortal (programmer) can handle? How can I approach this?

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  • list of things to think about for hosting a potentially high traffic website

    - by SpashHit
    I do my own hosting for a few clients on my own VPS server (Lindode). Since my clients so far have been extremely low traffic, I have not had to really dig into some of the considerations that I would need for a higher traffic site. Now I am bidding on a client whose site will be potentially higher (not Facebook or twitter, but higher than Joe's ice cream shop). Is there a list of things I need to think about that I may be missing? I am going to assume, at least at first, that I will be able to handle them on my shared Linode, but I could move to a dedicated Linode if need be. I am not thinking so far of multiple servers, but short of that there are still considerations. For example, mod_perl instead of straight CGI, better backups, etc. What else? In case it matters, the stack will be debian-linux / apache / Perl / mysql / Template Toolkit.

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  • Integrating Code Metrics in TFS 2010 Build

    - by Jakob Ehn
    The build process template and custom activity described in this post is available here: http://cid-ee034c9f620cd58d.office.live.com/self.aspx/BlogSamples/CodeMetricsSample.zip Running code metrics has been available since VS 2008, but only from inside the IDE. Yesterday Microsoft finally releases a Visual Studio Code Metrics Power Tool 10.0, a command line tool that lets you run code metrics on your applications.  This means that it is now possible to perform code metrics analysis on the build server as part of your nightly/QA builds (for example). In this post I will show how you can run the metrics command line tool, and also a custom activity that reads the output and appends the results to the build log, and also fails he build if the metric values exceeds certain (configurable) treshold values. The code metrics tool analyzes all the methods in the assemblies, measuring cyclomatic complexity, class coupling, depth of inheritance and lines of code. Then it calculates a Maintainability Index from these values that is a measure f how maintanable this method is, between 0 (worst) and 100 (best). For information on hwo this value is calculated, see http://blogs.msdn.com/b/codeanalysis/archive/2007/11/20/maintainability-index-range-and-meaning.aspx. After this it aggregates the information and present it at the class, namespace and module level as well. Running Metrics.exe in a build definition Running the actual tool is easy, just use a InvokeProcess activity last in the Compile the Project sequence, reference the metrics.exe file and pass the correct arguments and you will end up with a result XML file in the drop directory. Here is how it is done in the attached build process template: In the above sequence I first assign the path to the code metrics result file ([BinariesDirectory]\result.xml) to a variable called MetricsResultFile, which is then sent to the InvokeProcess activity in the Arguments property. Here are the arguments for the InvokeProcess activity: Note that we tell metrics.exe to analyze all assemblies located in the Binaries folder. You might want to do some more intelligent filtering here, you probably don’t want to analyze all 3rd party assemblies for example. Note also the path to the metrics.exe, this is the default location when you install the Code Metrics power tool. You must of course install the power tool on all build servers. Using the standard output logging (in the Handle Standard Output/Handle Error Output sections), we get the following output when running the build: Integrating Code Metrics into the build Having the results available next to the build result is nice, but we want to have results integrated in the build result itself, and also to affect the outcome of the build. The point of having QA builds that measure, for example, code metrics is to make it very clear how the code being built measures up to the standards of the project/company. Just having a XML file available in the drop location will not cause the developers to improve their code, but a (partially) failing build will! To do this, we need to write a custom activity that parses the metrics result file, logs it to the build log and fails the build if the values frfom the metrics is below/above some predefined treshold values. The custom activity performs the following steps Parses the XML. I’m using Linq 2 XSD for this, since the XML schema for the result file is available, it is vey easy to generate code that lets you query the structure using standard Linq operators. Runs through the metric result hierarchy and logs the metrics for each level and also verifies maintainability index and the cyclomatic complexity with the treshold values. The treshold values are defined in the build process template are are sent in as arguments to the custom activity If the treshold values are exceeded, the activity either fails or partially fails the current build. For more information about the structure of the code metrics result file, read Cameron Skinner's post about it. It is very simpe and easy to understand. I won’t go through the code of the custom activity here, since there is nothing special about it and it is available for download so you can look at it and play with it yourself. The treshold values for Maintainability Index and Cyclomatic Complexity is defined in the build process template, and can be modified per build definition: I have taken the default value for these settings from my colleague Terje Sandström post on Code Metrics - suggestions for approriate limits. You’ll notice that this is quite an improvement compared to using code metrics inside the IDE, where Red/Yellow/Green limits are fixed (and the default values are somewaht strange, see Terjes post for a discussion on this) This is the first version of the code metrics integration with TFS 2010 Build, I will proabably enhance the functionality and the logging (the “tree view” structure in the log becomes quite hard to read) soon. I will also consider adding it to the Community TFS Build Extensions site when it becomes a bit more mature. Another obvious improvement is to extend the data warehouse of TFS and push the metric results back to the warehouse and make it visible in the reports.

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  • Replication Services as ETL extraction tool

    - by jorg
    In my last blog post I explained the principles of Replication Services and the possibilities it offers in a BI environment. One of the possibilities I described was the use of snapshot replication as an ETL extraction tool: “Snapshot Replication can also be useful in BI environments, if you don’t need a near real-time copy of the database, you can choose to use this form of replication. Next to an alternative for Transactional Replication it can be used to stage data so it can be transformed and moved into the data warehousing environment afterwards. In many solutions I have seen developers create multiple SSIS packages that simply copies data from one or more source systems to a staging database that figures as source for the ETL process. The creation of these packages takes a lot of (boring) time, while Replication Services can do the same in minutes. It is possible to filter out columns and/or records and it can even apply schema changes automatically so I think it offers enough features here. I don’t know how the performance will be and if it really works as good for this purpose as I expect, but I want to try this out soon!” Well I have tried it out and I must say it worked well. I was able to let replication services do work in a fraction of the time it would cost me to do the same in SSIS. What I did was the following: Configure snapshot replication for some Adventure Works tables, this was quite simple and straightforward. Create an SSIS package that executes the snapshot replication on demand and waits for its completion. This is something that you can’t do with out of the box functionality. While configuring the snapshot replication two SQL Agent Jobs are created, one for the creation of the snapshot and one for the distribution of the snapshot. Unfortunately these jobs are  asynchronous which means that if you execute them they immediately report back if the job started successfully or not, they do not wait for completion and report its result afterwards. So I had to create an SSIS package that executes the jobs and waits for their completion before the rest of the ETL process continues. Fortunately I was able to create the SSIS package with the desired functionality. I have made a step-by-step guide that will help you configure the snapshot replication and I have uploaded the SSIS package you need to execute it. Configure snapshot replication   The first step is to create a publication on the database you want to replicate. Connect to SQL Server Management Studio and right-click Replication, choose for New.. Publication…   The New Publication Wizard appears, click Next Choose your “source” database and click Next Choose Snapshot publication and click Next   You can now select tables and other objects that you want to publish Expand Tables and select the tables that are needed in your ETL process In the next screen you can add filters on the selected tables which can be very useful. Think about selecting only the last x days of data for example. Its possible to filter out rows and/or columns. In this example I did not apply any filters. Schedule the Snapshot Agent to run at a desired time, by doing this a SQL Agent Job is created which we need to execute from a SSIS package later on. Next you need to set the Security Settings for the Snapshot Agent. Click on the Security Settings button.   In this example I ran the Agent under the SQL Server Agent service account. This is not recommended as a security best practice. Fortunately there is an excellent article on TechNet which tells you exactly how to set up the security for replication services. Read it here and make sure you follow the guidelines!   On the next screen choose to create the publication at the end of the wizard Give the publication a name (SnapshotTest) and complete the wizard   The publication is created and the articles (tables in this case) are added Now the publication is created successfully its time to create a new subscription for this publication.   Expand the Replication folder in SSMS and right click Local Subscriptions, choose New Subscriptions   The New Subscription Wizard appears   Select the publisher on which you just created your publication and select the database and publication (SnapshotTest)   You can now choose where the Distribution Agent should run. If it runs at the distributor (push subscriptions) it causes extra processing overhead. If you use a separate server for your ETL process and databases choose to run each agent at its subscriber (pull subscriptions) to reduce the processing overhead at the distributor. Of course we need a database for the subscription and fortunately the Wizard can create it for you. Choose for New database   Give the database the desired name, set the desired options and click OK You can now add multiple SQL Server Subscribers which is not necessary in this case but can be very useful.   You now need to set the security settings for the Distribution Agent. Click on the …. button Again, in this example I ran the Agent under the SQL Server Agent service account. Read the security best practices here   Click Next   Make sure you create a synchronization job schedule again. This job is also necessary in the SSIS package later on. Initialize the subscription at first synchronization Select the first box to create the subscription when finishing this wizard Complete the wizard by clicking Finish The subscription will be created In SSMS you see a new database is created, the subscriber. There are no tables or other objects in the database available yet because the replication jobs did not ran yet. Now expand the SQL Server Agent, go to Jobs and search for the job that creates the snapshot:   Rename this job to “CreateSnapshot” Now search for the job that distributes the snapshot:   Rename this job to “DistributeSnapshot” Create an SSIS package that executes the snapshot replication We now need an SSIS package that will take care of the execution of both jobs. The CreateSnapshot job needs to execute and finish before the DistributeSnapshot job runs. After the DistributeSnapshot job has started the package needs to wait until its finished before the package execution finishes. The Execute SQL Server Agent Job Task is designed to execute SQL Agent Jobs from SSIS. Unfortunately this SSIS task only executes the job and reports back if the job started succesfully or not, it does not report if the job actually completed with success or failure. This is because these jobs are asynchronous. The SSIS package I’ve created does the following: It runs the CreateSnapshot job It checks every 5 seconds if the job is completed with a for loop When the CreateSnapshot job is completed it starts the DistributeSnapshot job And again it waits until the snapshot is delivered before the package will finish successfully Quite simple and the package is ready to use as standalone extract mechanism. After executing the package the replicated tables are added to the subscriber database and are filled with data:   Download the SSIS package here (SSIS 2008) Conclusion In this example I only replicated 5 tables, I could create a SSIS package that does the same in approximately the same amount of time. But if I replicated all the 70+ AdventureWorks tables I would save a lot of time and boring work! With replication services you also benefit from the feature that schema changes are applied automatically which means your entire extract phase wont break. Because a snapshot is created using the bcp utility (bulk copy) it’s also quite fast, so the performance will be quite good. Disadvantages of using snapshot replication as extraction tool is the limitation on source systems. You can only choose SQL Server or Oracle databases to act as a publisher. So if you plan to build an extract phase for your ETL process that will invoke a lot of tables think about replication services, it would save you a lot of time and thanks to the Extract SSIS package I’ve created you can perfectly fit it in your usual SSIS ETL process.

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  • How Does One Make a Sitemap for a Flex Website?

    - by Laxmidi
    Hi, I've got a Flex website and I'm not sure how to make a sitemap for it. For a standard HTML page, sitemaps are straight forward. As Flex sites use a "pageless" architecture, I'm not sure what I should do. If anyone has any suggestions, please let me know. UPDATE: As I understand it, Google doesn't look at anything after the # in a URL. So in a deeplinked Flex site, Google wouldn't see the second page-- where it reads view=12 in the sample sitemap below. Or does Google handle sitemaps differently? Should I go ahead and make a sitemap with all of the deeplinked URLS: http://brainpinata.com/#view=12, http://brainpinata.com/#view=4, etc.           http://www.brainpinata.com/       2010-12-01       weekly       1.0           http://brainpinata.com/#view=12       2010-12-01       weekly       1.0     Thank you. -Laxmidi

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  • Entity/Component based engine rendering separation from logic

    - by Denis Narushevich
    I noticed in Unity3D that each gameObject(entity) have its own renderer component, as far I understand, such component handle rendering logic. I wonder if it is a common practice in entity/component based engines, when single entity have renderer components and logic components such as position, behavior altogether in one box? Such approach sound odd to me, in my understanding entity itself belongs to logic part and shouldn't contain any render specific things inside. With such approach it is impossible to swap renderers, it would require to rewrite all that customized renderers. The way I would do it is, that entity would contain only logic specific components, like AI,transform,scripts plus reference to mesh, or sprite. Then some entity with Camera component would store all references to object that is visible to the camera. And in order to render all that stuff I would have to pass Camera reference to Renderer class and render all sprites,meshes of visible entities. Is such approach somehow wrong?

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  • Game based on Ajax polling for 12 players

    - by Azincourt
    I am planning on writing a small browser game. The webserver is a shared server, with no root / install possible. I want to use AJAX for client/server communication. There will be 12 players. So each player would be polling the server for the current game status every X milliseconds (let's say 200ms). So that would be 200ms x 12 players x 5 = 60 requests per second Can Apache handle those requests? What might be the bottlenecks when using this attempt?

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  • Which GPU with my CPU for 1080p flash?

    - by oshirowanen
    Based on the following site: http://www.adobe.com/products/flashplayer/systemreqs/ I need the following minimum spec to play 1080p flash video via a browser: CPU: 1.8GHz Intel Core Duo, AMD Athlon 64 X2 4200+, or faster processor RAM: 512MB of RAM GPU: 64MB of graphics memory I only have a 2.8GHz Pentium 4 process which is no where near as good as the processor listed above. I don't want to upgrade my processor as I think it will mean I have to change the motherboard etc. So, my question is, what is the cheapest PCI-E GPU I can buy which will allow me to play smooth 1080p flash video via a browser. I think the cheapest I can get is the 8400GS, but am not sure if that will be able to handle 1080p with the processor I have. I have looked at the GT520 and was wondering if this is the cheapest GPU which I need, or if there is something cheaper which will do 1080p with a 2.8GHz Pentium 4. Or, will I have to get something better than a GT520?

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  • how to properly credit authors of MIT license program

    - by kon psych
    Although I have found similar questions on this site they were not what I was looking for. I have modified the source code of an MIT licensed project, and I have added new classes to it as well. Please correct me if I am wrong, but I think that it is legal to add my copyright notice above the license and remove the other one. But how should I attribute the contribution of the previous authors? Should I use a separate file? There are also some html files with no license or copyright notice in them which I also modified. Do I have to handle them differently? My question is different than this question in that I have also modified some of the files of the project I am extending.

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  • tech-ed 2012

    - by foxjazz
    So, am not going to tech-ed this year.I didn't get much benefit from going last year, but I did meet a lot of nice folks.I am working on my first official Silverlight project, and it's going ok.I having a few issues which I may resolve with WCF services.I am still green around the edges with this technology, but I am getting the hang of it slowly.Learning a lot about IQueryable and how to handle databases.Depending on what I am looking todo, I may use some messaging services within the app.It has been a hard study the last month. Learning SL, JQuery, More CSS and website work, code-first.Node.js, SingalRThere seems to be a lot to do to keep up with the technology.Hope to post more often, but am hammering on something new, most of the time.

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  • Polymorphism and passing

    - by Tucker Morgan
    Ok i am going to try and state my question as clearly as possible, but if you have trouble understanding it please just ask for clarification, i really want to figure out how to do this. I am writing a text based RPG, and i have three class that inherit from a super class, they all have special attacks that they can preform, at the same time i have a class that holds the function which handles battles in my game. Now how do i get the unique special abilities functions for whatever role the player chooses into the battle function. Also i am using the vector.push_back method to handle how my sub classes are referenced Please help me your my only hope

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  • python, cluster computing, design help [closed]

    - by j dawg
    I would like to create my own parallel computing server. Can you please point me to some resources I can use to help me develop my server. Sorry, like I said I need help getting started. Yes, I am limited to python, I cannot use C. I am using a bunch of workstations and I want to use all the cpus in those machines. So what I am looking for is blog posts, books, articles that can help me develop my own client/server tools to send code from the client to the servers and spawn python processes based on the number of cpus. I know how to do the subprocessing/multiprocessing part of the program, I do not know how to create the server that will take the client's requests. I also need to figure out what is the best way to handle sending file data, like netcdf files or other spatial data. Any suggestions very welcome.

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  • How to implement turn-based game engine?

    - by Dvole
    Let's imagine game like Heroes of Might and Magic, or Master of Orion, or your turn-based game of choice. What is the game logic behind making next turn? Are there any materials or books to read about the topic? To be specific, let's imagine game loop: void eventsHandler(); //something that responds to input void gameLogic(); //something that decides whats going to be output on the screen void render(); //this function outputs stuff on screen All those are getting called say 60 times a second. But how turn-based enters here? I might imagine that in gameLogic() there is a function like endTurn() that happens when a player clicks that button, but how do I handle it all? Need insights.

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  • Why do we keep using CSV?

    - by Stephen
    Why do we keep using CSV? I recently made a shift to working the health domain and despite the wonderful work in data transfer standards, all data transfer is in CSV, both for reporting to external organisations, and for data migrations when implementing new systems. Unfortunately the use of CSV is the cause of the endless repetition of the same stupid errors, with the same waste of developer time. (bad escaping, failing to handle null fields etc.) I know we can do better, and anything between JSON and XML (depending on the instance) would be fine. (Most of the time this is data going from one MS SQLserver 2005 to another!) I feel as if each time I see this happening I am literally watching one developer waste anothers time. So why do we keep shafting each other? When will we stop?

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  • Are technical books easy to read on the Kindle (or other small screens) [closed]

    - by Peter Recore
    Possible Duplicate: eBook editions of programming books I am considering getting a kindle or other e reader. (Kindle is my top choice for the eink vs lcd factor) I have been able to try reading fiction on a Kindle, and it seemed pretty nice, even with the small screen. However, most books I buy are actually technical books, which tend to have figures, code samples, and other odd things. How well do the various ereaders handle books like this? In particular, does the kindle render code samples or figures in an easy to read way?

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  • Lost transparency in SDL surfaces drawn manually

    - by Christian Ivicevic
    I want to create SDL_Surface objects for each layer of my 2d tile-based map so that I have to render only one surface per layer rather than too many tiles. With normal tiles which do not have transparent areas this works well, however I am not able to create a SDL_Surface with transparent pixels everywhere to be able to draw some tiles on specific parts which should be visible (I do NOT want the whole surface to appear with a specific opacity - I want to create overlaying tiles where one can look through). Currently I am creating my layers like this to draw with SDL_BlitSurface on them: SDL_Surface* layer = SDL_CreateRGBSurface( SDL_HWSURFACE | SDL_SRCALPHA, layerWidth, layerHeight, 32, 0, 0, 0, 0); If you have a look at this screenshot I have provided here you can see that the bottom layer with no transparent parts gets rendered correctly. However the overlay with the tree tile (which is transparent in the top left corner) is drawn own its own surface which is black and not transparent as expected. The expected result (concerning the transparency) can be seen here Can anyone explain me how to handle surfaces which are actually transparent rather than drawing all my overlay tiles separately?

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  • Customer Spotlight: Land O’Lakes

    - by kellsey.ruppel
    Land O’Lakes, Inc. is one of America’s premier member-owned cooperatives, offering local cooperatives and agricultural producers across the nation an extensive line of agricultural supplies, as well as state-of-the-art production and business services. WinField Solutions, a company within Land O’Lakes, is using Oracle WebCenter to improve online experiences for their customers, partners, and employees. The company’s more than 3,000 seed customers, and its more than 300 internal and external sales force members and business partners, use Oracle WebCenter to handle all aspects of account management and order entry through a consolidated, personalized, secure user interface. Learn more about Land O’Lakes and Oracle WebCenter by reading this interview with Barry Libenson, Land O’Lakes chief information officer, or by watching this video.

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  • top tweets WebLogic Partner Community – September 2012

    - by JuergenKress
    Send your tweets @wlscommunity #WebLogicCommunity and follow us at http://twitter.com/wlscommunity Oracle Exalogic? VIDEO: Oracle Public Cloud Built on Exalogic!, http://www.youtube.com/watch?v=UGzjDloUw_s&feature=plcp … oracleopenworld #NetBeans Community Day at #JavaOne http://ow.ly/dunFL Oracle Cloud Zone Building an enterprise Cloud? Have Oracle show you the RIGHT way to plan, deploy and monitor enterprise clouds.... http://fb.me/286978S4S OTNArchBeat? Oracle Exalogic X2-2 walk-through with Brad Cameron | @jvzoggel http://pub.vitrue.com/yE7d Oracle Technet? Stash your cash. September OTN Member Offers - discounts on books, more | OTN Blog http://pub.vitrue.com/yTr9 C2B2 Consulting? C2B2 is Speaking at @UKOUG App Server Middleware SIG Meeting 'Real Life #WebLogic Performance Tuning' http://www.c2b2.co.uk/ukoug_application_server_middleware_sig_meeting … @wlscommunity JAXenter.com? From yesterday, @smeyen offers his views on the next generation #Java - do you agree? http://jaxenter.com/next-gen-java-we-don-t-need-another-revolutionary-44334.html … Markus Eisele? Awesome: professor from ITU uploads her programming lectures to #YouTube. Programming classes without having to pay! http://bit.ly/UtkJIW Adam Bien? Real World Java EE 6 Patterns--Rethinking Best Practices Reloaded: A completely rewritten, second, iteration of ... http://bit.ly/Qc3xTH Markus Eisele [blog] #PrimeFaces Push with #Atmosphere on #GlassFish 3.1.2.2 http://goo.gl/fb/jPDzA Lucas Jellema? Forms community event at Oracle Open World - Tuesday, 2nd Oct with the BIG names in Forms - see: http://oracleformsinfo.wordpress.com/2012/08/28/ask-the-product-manager-join-us-at-the-oracle-forms-community-event-at-openworld-2012/ … WebLogic Community WebLogic & Coherence & Cloud presentations for customer meetings http://wp.me/p1LMIb-kw Adam Bien? New Book: Rethinking Best Practices with Java EE 6 is out: http://realworldpatterns.com (fully rewritten, re-edited and reformatted) WebLogic Community? Want to become and WebLogic 12c expert? free WebLogic 12c partner bootcamps &ndash;new locations: Madrid Spain http://wp.me/p1LMIb-kK WebLogic Community? Promote Your WebLogic events at http://oracle.com http://wp.me/p1LMIb-ku OracleBlogs Gartner review Oracle ADF http://ow.ly/1mgkCV Simon Haslam Next #ukoug App Server & MW SIG on 10 Oct: http://www.ukoug.org/events/ukoug-application-server-and-middleware-sig-meeting8/ … Hopefully plenty of good admin stuff! Michel Schildmeijer My book "WebLogic 12c; First look" has been reviewed again..see http://www.amazon.com/review/R28L6E3CC9RPMK/ref=cm_cr_pr_perm?ie=UTF8&ASIN=1849687188&linkCode=&nodeID=&tag= … … Markus Eisele? #Weblogic 11g Interactive Quick Reference Map: http://bit.ly/Ugsq52 #wls #oracle #reference /via @TonyvanEsch Marc? Playing with #syslog server and #weblogic. Is there a simple how-to to configure all the logging from #WLS to #syslog-ng WebLogic Community Java update http://wp.me/p1LMIb-kI WebLogic Community top tweets WebLogic Partner Community &ndash; August 2012 http://wp.me/p1LMIb-kA Andrejus Baranovskis? Oracle University Training: ADF/WebCenter 11g Development in Depth | Andrejus Baranovskis http://fb.me/253ZTS2zp OracleSupport_WLS? How neat is a free tool that allows you to inspect and debug traffic from virtually any application? http://pub.vitrue.com/vXdP WebLogic Community WebLogic Partner Community Newsletter August 2012 http://wp.me/p1LMIb-kn OTNArchBeat Integrating Coherence & Java EE 6 Applications using ActiveCache | Ricardo Ferreira http://pub.vitrue.com/rwGg Adam Bien? Thanks for attending the #javaee #techtalk "Enterprise Java 2.0" I pushed the project and slides to: http://kenai.com/projects/javaee-patterns/sources/hg/show/hacks/techtalk2012?rev=429 … JDeveloper & ADF? How to service-enable Oracle ADF Business Components http://ht.ly/1mcfsZ OracleSupport_WLS? Do you know that #WebLogic 12.1.1.0 is certified for production with JDK 7? @ http://pub.vitrue.com/35Kn Andreas Koop? My latest upload : WebLogic Administration und Deployment mit WLST on @slideshare http://www.slideshare.net/multikoop/weblogic-administration-und-deployment-mit-wlst … OTNArchBeat? Demo for OPN: Oracle Coherence Management with EM Cloud Control 12c http://pub.vitrue.com/reoo Markus Eisele? [blog] Java Champions at #JavaOne 2012 http://goo.gl/fb/Ibb6N #javachampion OracleBlogs Buy This Book!: Oracle Exalogic Elastic Cloud Handbook http://ow.ly/1malM1 WebLogic Community? Coherence Management with EM Cloud Control 12c &ndash;demo for partners http://wp.me/p1LMIb-iE Arun Gupta? Learn how Java can help Internet of Things at Java Embedded at JavaOne: http://bit.ly/POBizh WebLogic Community? Follow WebLogicCommunity on facebook http://www.facebook.com/WebLogicCommunity … #WebLogicCommunity WebLogic Community? Building Java EE in the Cloud–Webcast August 30th 2012 https://weblogiccommunity.wordpress.com/2012/08/27/building-java-ee-in-the-cloudwebcast-august-30th-2012/ … #WebLogicCommunity #Java #oracle #opn WebLogic Community? Call for WebLogic Community newsletter content. Please send @wlscommunity #WebLogicCommunity OracleSupport_WLS? The #weblogic wasp: lots of tips, Q&A and examples http://pub.vitrue.com/v0bw Frank Nimphius? Free ADF Best Practices Webinar by Andrejus Baranovskis for ODTUG (18, 2012 12:00 PM - 1:00 PM EDT) http://bit.ly/OiSWbi ADF Code Corner Webcast- Friday September 14, 8:30 AM - 9.00 AM (CET) - ADF as a basis of Fusion Apps (in English) - with Chris Muir: http://bit.ly/OiQVMb Oracle WebLogic? New blog post: Developing Custom User Principal Object http://pub.vitrue.com/ltam JAX London? Just 4days left to get in on the early bird special, don't miss out!! http://jaxlondon.com/ #JAXLondon #Java WebLogic Community Building Java EE in the Cloud&ndash;Webcast August 30th 2012 http://wp.me/p1LMIb-kE Andrejus Baranovskis? New Record Master-Detail Validation and ADF BC Groovy Use Case http://fb.me/1D2NEIl8g JAX London? Don't miss out!!! Only 6 days left to make use of our early bird offer #JAXLondon #JAVA http://jaxlondon.com/ Michel Schildmeijer Qualogy launches Proof of Concept Center for Oracle Fusion Applications http://www.qualogy.com/qualogy-launches-proof-of-concept-center-for-oracle-fusion-applications/ … via @Qualogy_news OracleSupport_WLS ?Need to troubleshoot redeployment failure in #Weblogic? Check this http://pub.vitrue.com/auhz OracleEnterpriseMgr? Blog : Managing Oracle #Exalogic Elastic #Cloud with Oracle Enterprise Manager Ops Center http://ow.ly/dd40e #em12c ODTUG? Want free advanced technical ADF training?Join @andrejusb for an @odtug webinar! check out his blog for more info http://bit.ly/SvKJDq chriscmuir Oracle Open World 2012 and ADF EMG http://zite.to/QyusZE OTNArchBeat? Boost your infrastructure with Coherence into the Cloud | Nino Guarnacci http://pub.vitrue.com/v3aJ WebLogic Community? Presentations & Training material OFM Summer Camps & Impressions & Feedback http://wp.me/p1LMIb-ks Arun Gupta? Java EE 6 pocket guide by O'Reilly available for pre-order from Amazon: http://amzn.to/O6YyoP and B&N: http://bit.ly/NjWLk1 OTNArchBeat Joining the Existing Cluster in Coherence | A. Fuat Sungur http://pub.vitrue.com/6uLh Andrejus Baranovskis Sample Application for Switching Application Module Data Sources http://fb.me/1PSURUzch OTNArchBeat Oracle WebLogic DevCast: Building Java EE in the Cloud - August 30 - 10am PT/ 1pm ET http://pub.vitrue.com/xXg0 OTNArchBeat? GlassFish Community Event at #javaone - Sept 30 -11am – 1pm -Moscone South. Register Now! http://pub.vitrue.com/p2f5 OracleSupport_WLS? Connecting To HTTPS Site Using Simple Java Program When Using Proxy http://pub.vitrue.com/stVv Michel Schildmeijer? Before you go to #OOW take the sneak preview of WebLogic 12c with you: http://www.qualogy.com/ga-nog-niet-naar-oow-en-neem-mee-weblogic-12c/ … via @Qualogy_news Simon Haslam? Even more great ADF content at #oow2012 this year including a packed ADF EMG day on Sunday: https://blogs.oracle.com/onesizedoesntfitall/entry/the_year_after_the_year … OracleBlogs ExaLogic trainings for partners http://ow.ly/1m6a5D Robin? First presentation on DOAG conference (thanks to @Steffen2042) "Weblogic Server for Dummies". Now I´m pretty excited :) http://www.doag.org/de/events/konferenzen/doag-2012.html … Markus Eisele There is a #facebook page for the upcoming #Java Mission Control (JRockit Mission Control for #Hotspot)! ttp://on.fb.me/Q31oyA Adam Bien? The almost free #javaee workshop in Rapperswil has only 60 registrations so far: http://www.adam-bien.com/roller/abien/entry/enterprise_java_2_0_swiss … What's the problem? :-) WebLogic Community ExaLogic trainings for partners http://wp.me/p1LMIb-iC OracleBlogs How to install Oracle Weblogic Server using Generic Package installer? http://ow.ly/1m5ms7 OracleSupport_WLS #Weblogic Server new blog post - Developing Custom User Principal Object http://pub.vitrue.com/ltam OracleBlogs? Architects and Architecture at JavaOne 2012 http://ow.ly/1m4oS5 WebLogic Community Are you WebLogic or Application Grid Specialized? Do you get Recognized? Get your plaque https://weblogiccommunity.wordpress.com/2012/08/21/plaques-weblogic-application-grid-specialization/ … #WebLogicCommunity #opn WebLogic Community? Plaques WebLogic & Application Grid Specialization http://wp.me/p1LMIb-iA JDeveloper & ADF? First Steps With Oracle Application Testing Suite: Recording a Test With OpenScript http://dlvr.it/222npy WebLogic Partner Community For regular information become a member in the WebLogic Partner Community please visit: http://www.oracle.com/partners/goto/wls-emea ( OPN account required). If you need support with your account please contact the Oracle Partner Business Center. Blog Twitter LinkedIn Mix Forum Wiki Technorati Tags: twitter,WebLogic,WebLogic Community,Oracle,OPN,Jürgen Kress

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  • Sorting and Paging a Grid of Data in ASP.NET MVC

    This article is the fifth installment in an ongoing series on displaying a grid of data in an ASP.NET MVC application. Previous articles in this series examined how to sort, page, and filter a grid of data, but none have looked at combining one or more of these features in a single grid. This article and the next one show how to merge these features into a single grid. In particular, this article looks at displaying a grid that can handle both sorting and paging. The subsequent article will examine combining sorting, paging and filtering. Like with its predecessors, this article offers step-by-step instructions and includes a complete, working demo available for download at the end of the article. Read on to learn more! Read More >

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  • What is this code?

    - by Aerovistae
    This is from the Evolution of a Programmer "joke", at the "Master Programmer" level. It seems to be C++, but I don't know what all this bloated extra stuff is, nor did any Google searches turn up anything except the joke I took it from. Can anyone tell me more about what I'm reading here? [ uuid(2573F8F4-CFEE-101A-9A9F-00AA00342820) ] library LHello { // bring in the master library importlib("actimp.tlb"); importlib("actexp.tlb"); // bring in my interfaces #include "pshlo.idl" [ uuid(2573F8F5-CFEE-101A-9A9F-00AA00342820) ] cotype THello { interface IHello; interface IPersistFile; }; }; [ exe, uuid(2573F890-CFEE-101A-9A9F-00AA00342820) ] module CHelloLib { // some code related header files importheader(<windows.h>); importheader(<ole2.h>); importheader(<except.hxx>); importheader("pshlo.h"); importheader("shlo.hxx"); importheader("mycls.hxx"); // needed typelibs importlib("actimp.tlb"); importlib("actexp.tlb"); importlib("thlo.tlb"); [ uuid(2573F891-CFEE-101A-9A9F-00AA00342820), aggregatable ] coclass CHello { cotype THello; }; }; #include "ipfix.hxx" extern HANDLE hEvent; class CHello : public CHelloBase { public: IPFIX(CLSID_CHello); CHello(IUnknown *pUnk); ~CHello(); HRESULT __stdcall PrintSz(LPWSTR pwszString); private: static int cObjRef; }; #include <windows.h> #include <ole2.h> #include <stdio.h> #include <stdlib.h> #include "thlo.h" #include "pshlo.h" #include "shlo.hxx" #include "mycls.hxx" int CHello:cObjRef = 0; CHello::CHello(IUnknown *pUnk) : CHelloBase(pUnk) { cObjRef++; return; } HRESULT __stdcall CHello::PrintSz(LPWSTR pwszString) { printf("%ws\n", pwszString); return(ResultFromScode(S_OK)); } CHello::~CHello(void) { // when the object count goes to zero, stop the server cObjRef--; if( cObjRef == 0 ) PulseEvent(hEvent); return; } #include <windows.h> #include <ole2.h> #include "pshlo.h" #include "shlo.hxx" #include "mycls.hxx" HANDLE hEvent; int _cdecl main( int argc, char * argv[] ) { ULONG ulRef; DWORD dwRegistration; CHelloCF *pCF = new CHelloCF(); hEvent = CreateEvent(NULL, FALSE, FALSE, NULL); // Initialize the OLE libraries CoInitiali, NULL); // Initialize the OLE libraries CoInitializeEx(NULL, COINIT_MULTITHREADED); CoRegisterClassObject(CLSID_CHello, pCF, CLSCTX_LOCAL_SERVER, REGCLS_MULTIPLEUSE, &dwRegistration); // wait on an event to stop WaitForSingleObject(hEvent, INFINITE); // revoke and release the class object CoRevokeClassObject(dwRegistration); ulRef = pCF->Release(); // Tell OLE we are going away. CoUninitialize(); return(0); } extern CLSID CLSID_CHello; extern UUID LIBID_CHelloLib; CLSID CLSID_CHello = { /* 2573F891-CFEE-101A-9A9F-00AA00342820 */ 0x2573F891, 0xCFEE, 0x101A, { 0x9A, 0x9F, 0x00, 0xAA, 0x00, 0x34, 0x28, 0x20 } }; UUID LIBID_CHelloLib = { /* 2573F890-CFEE-101A-9A9F-00AA00342820 */ 0x2573F890, 0xCFEE, 0x101A, { 0x9A, 0x9F, 0x00, 0xAA, 0x00, 0x34, 0x28, 0x20 } }; #include <windows.h> #include <ole2.h> #include <stdlib.h> #include <string.h> #include <stdio.h> #include "pshlo.h" #include "shlo.hxx" #include "clsid.h" int _cdecl main( int argc, char * argv[] ) { HRESULT hRslt; IHello *pHello; ULONG ulCnt; IMoniker * pmk; WCHAR wcsT[_MAX_PATH]; WCHAR wcsPath[2 * _MAX_PATH]; // get object path wcsPath[0] = '\0'; wcsT[0] = '\0'; if( argc > 1) { mbstowcs(wcsPath, argv[1], strlen(argv[1]) + 1); wcsupr(wcsPath); } else { fprintf(stderr, "Object path must be specified\n"); return(1); } // get print string if(argc > 2) mbstowcs(wcsT, argv[2], strlen(argv[2]) + 1); else wcscpy(wcsT, L"Hello World"); printf("Linking to object %ws\n", wcsPath); printf("Text String %ws\n", wcsT); // Initialize the OLE libraries hRslt = CoInitializeEx(NULL, COINIT_MULTITHREADED); if(SUCCEEDED(hRslt)) { hRslt = CreateFileMoniker(wcsPath, &pmk); if(SUCCEEDED(hRslt)) hRslt = BindMoniker(pmk, 0, IID_IHello, (void **)&pHello); if(SUCCEEDED(hRslt)) { // print a string out pHello->PrintSz(wcsT); Sleep(2000); ulCnt = pHello->Release(); } else printf("Failure to connect, status: %lx", hRslt); // Tell OLE we are going away. CoUninitialize(); } return(0); }

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  • Screen goes nuts and unreadable

    - by ChazD
    Running Ubuntu 10.10 in its own partition, also have Oracle Virtualbox 4 with Windows XP. Because i previously had a problem with a dark screen when i let the laptop on and i didn't use it for a long while i had set Power settings to Never sleep, never let the Display sleep. Monitor on install set to Laptop resolution 1400 by 1050, refresh rate 60 Hz, rotation Normal. The problem was when the computer was left on and i returned after about an hour, the screen was unreadable, similar to what used to happen to graphics cards before multisync became normal. So it appears as though the graphics card was asked to use a resolution it couldn't handle and went nuts. I had to power off the system, on restart everything was fine. Thanks for any suggestions. ChazD

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  • Chrome Apps Office Hours

    Chrome Apps Office Hours Ask and vote for questions here: goo.gl Now that you've got a handle on what Chrome Apps are and what they can do, we're going to build an app live, and dive into the new Windowing API to show you how you can completely configure the look and feel of your Chrome App window. We'll also explain more about Content Security Policy, and how it might affect your development. Remember, we want to hear from you! What are the APIs that you're most interested and excited about? Tell us at goo.gl so we can cover the things you're most interested in first! Be sure to add this event to your calendar and tune in next Tuesday! From: GoogleDevelopers Views: 1504 36 ratings Time: 44:00 More in Science & Technology

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