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• MVC Project for review

  - by parminder

  I am very close to completion of a mvc project which I want to make public. I want people to review my codes and give me the feedback, so that I can improve my codes and make this project better. I will put this code on codeplex or at some other repository soon. Or is there any better way to get it reviewed. Also I havent written any test for that. I dont have much experience in that area, if somebody can do it, I will really be thankful.

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• What is "sentry object" in C++?

  - by Romain Hippeau

  I answered this question, and Potatoswatter answered too as The modern C++ equivalent would be a sentry object: construct it at the beginning of a function, with its constructor implementing call(), and upon return (or abnormal exit), its destructor implements I am not familiar with using sentry objects in C++. I thought they were limited to input and output streams. Could somebody explain to me about C++ sentry objects as well as how to use them as an around interceptor for one or more methods in a class ? i.e. How to do this ? Sentry objects are very similar indeed. On the one hand they require explicit instantiation (and being passed this) but on the other hand you can add to them so that they check not only the invariants of the class but some pre/post conditions for the function at hand.

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• Socket ping-pong performance

  - by Kamil_H

  I have written two simple programs (tried it in C++ and C#). This is pseudo code: -------- Client --------------- for(int i = 0; i < 200.000; i++) { socket_send("ping") socket_receive(buff) } --------- Server ------------- while(1) { socket_receive(buff) socket_send("pong") } I tried it on Windows. Execution time of client is about 45 seconds. Can somebody explain me why this takes so long? I understand that if there were real network connection between client and server the time of one 'ping-pong' would be: generate_ping + send_via_network + generate_pong + send_via_network but here everything is done in 'local' mode. Is there any way to make this inter process ping-pong faster using network sockets (I'm not asking about shared memory for example :) )

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• Active Directory public key use

  - by Chris Meadows

  I have a client who has a requirement to validate users logging into my web application against his active directory using LDAP. In trying to connect using the DirectoryEntry and DirectorySearcher .NET classes, I can connect to his AD Server but not access it. The client's AD server has an SSL Certificate for which he has given me a public key file but I don't know how to use this public key file in my C# code. When I issue the connect command through code, I see, via Wireshark, my application sending the connection request. I then see the server responding with "Server Hello, Certificate, Certificate Request, Server Hello Done". Then my application never responds after that. In using another application, written by somebody else for which I do not have code, I see the same request from the server and then see the application respond with "Certificate, Client Key Exchange" and then the application connects and runs. With that said, my question then becomes, how can I get my C# application to load and send the key file I got from the client?

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• How is 'processing credit card data' defined (PCI)?

  - by Chris

  If i have a web application and i receive credit card data transmitted via a POST request by a web browser over HTTPS and instantly open a socket (SSL) to a remote PCI compilant card processor to forward the data and wait for a response, am i allowed to do that? or is this receiving the data with my application and forwarding it already subject of "processing credit card data"? if i create an iframe that is displayed in a client browser to enter cc data and this iframe posts the data via HTTPS to remote card processor (directly!) is this already a case of processing credit card data? even if my application code 'doesnt touch' the entered data with any event handlers? i'm interested in the definition "credit card data processing". when does it start to be a cc data processing application? can somebody maybe point me to that section in PCI-DSS standard that clearly defines when you start to 'be a processing application'? Thanks,

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• When is it good to start using project management applications?

  - by Mr.Gando

  Hello, I was wondering, when is the right time or the correct project size to start using project management applications ( like Redmine or Trac ). I have a serious project, for now it's only me developing, but I use redmine to set my project versions, issues, and estimations. I think it's a good idea, because you never know when somebody else is going to join the team, and also allows me to organize myself effectively. I ask this question because I was Teaching Assistant at my university for one year in a row for a course, and I got questions about this very very often. While I'm a believer of the KISS principle, I think that learning to use this tools early is a win-win most of the time. I really believe that we can avoid this question to become argumentative, and that there's somewhat of a consensus about this issue, which I consider quite important in todays software development world. So, when is the right time ? what is the correct project/team size ?

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• AppData\Roaming folder in windows service project

  - by vikash

  I need a help on getting Special folder in windows service program. I used this code in my Windows Form application: Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData); and got the path, ""C:\Users\\AppData\Roaming"* But if I run the same code in my Winows Service project I got the path: "C:\Windows\ServiceProfiles\LocalService\AppData\Roaming\" But I need the earlier path (got in Windows Form). How do I get the same path in Service projet also. I have user setting file, log, config file in the "C:\Users\\AppData\Roaming" folder. So I have to refer the same path both in my Windows Form application and Windows Service project. Can somebody tell me, what is the difference here and how do i get the same path in both type of project? Thanks, sharath

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• How is Java Platform independent when it needs JVM to run ?

  - by happysoul

  Just started learning Java and I am confused about this whole independent platform thingy. Doesn't independent means that Java code should be able to run on any machine and would need no special software to be installed (JVM in this case has to be present in the machine)? Like, for example, we need to have Turbo C Compiler in order to compile C/C++ source code and then execute it.. The machine has to have the C compiler. guess I am confused..Somebody please explain in simple language or may be direct me to a tutorial that explain things in simple language ? that would be great I am just not getting the concept.

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• C# myths about best practices?

  - by TheMachineCharmer

  My colleague keeps telling me of the things listed in comments. I am confused. Can somebody please demystify these things for me? class Bar { private int _a; public int A { get { return _a; } set { _a = value; } } private Foo _objfoo; public Foo OFoo { get { return _objfoo; } set { _objfoo = value; } } public Bar(int a, Foo foo) { // this is a bad idea A = a; OFoo = foo; } // MYTHS private void Method() { this.A //1 - this._a //2 - use this when inside the class e.g. if(this._a == 2) A //3 - use this outside the class e.g. barObj.A _a //4 - // Not using this.xxx creates threading issues. } } class Foo { // implementation }

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• C# - Google like query engine.-

  - by MRFerocius

  Guys; Hope you are fine. I have to make a Web Project (very simple) I will have a DB with 2 tables. One table has 2 fields. From the WebPage I need a Google like search query, for example I have Movie Title and Movie Review on the Table. I need to be able to search those 2 fields like this: "Best Movie" + Action I will need to make a query to the DB to search for the "Best Movie" string togheter plus optional ACTION word on 2 fields of the table. Am I clear??? :) Does somebody know if this has already been made, and if it´s public and free and where to get it :) Thanks in advanced EDIT: My concern is to translate the Google like Symbols ("", +, -, ~) to build a valid query.

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• SaaS practical basics and projects

  - by Medardas

  So i need some directions. I want to understand Cloud Software as a Service(SaaS) practical initialization. The thing is I want to create a simple cloud service which would let me run programs on this cloud from remote machine. As I understand, I need some kind of specific backbone project to start this system, similar like OpenStack or Apache Cloud for Infostructure as a Service. Of course it may be that I understand it completely wrong and even if there is such project, it is not open source, free. I could also comprehend SaaS building on IaaS, but the thing is, I can't find any practical information at all. Could Somebody indulge me if there is any kind of free licence SaaS project or recommend a related articles or explain everything in a nut case with atleast vague direction.

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• Getting a value of td of a selected tr in jquery

  - by jaeyun

  Below is my table <table> <tr class=chargeTR> <td id=chargeTD> charge1 </td> </tr class=chargeTR> <td id=chargeTD> charge2 </td> </tr> <table> Below is my jquery call $(".chargeTR").each(function() { // this line works fine $.get("process.php", { value: $(this).find("#chargeTD").val(), // I must be doing something wrong here... }, function(theXML){ alert(theXML); }); }); I cannot get the value "charge1" and "charge2". Can somebody please correct me in this? Thank you,

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• Program occasionally stuck when writing to ldap

  - by djerry

  hey guys, I have 2 databases for my program : mysql and ldap. All transactions happen to mysql, but i need ldap to connect to ip-phones. There's an option to synchronise the ldap database. So when the ldap is brand new, and mysql contains like 200+ records, it may want to update. But when inserting all those entries, it "freezes". It never happens at the same record, it's very random. Sometimes after 70 records, sometimes at 200 the program quits inserting, and gets stuck. This is very annoying. My best guess is that ldap can't handle that much inserts in a short time. Code isn't the problem, as it is a random problem. Does this seem familiar to somebody or is it just me? Thanks in advance.

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• How to send reminder emails based on users input time and day (based on their time zone)

  - by evgelen

  I need to send emails based on users input time and day (based on their time zone)? Kind of a reminder. For Example: User input 2:00pm Eastern Time on my server I have different time zone, how to calculate the time and send the email at users time-zone. Its a web application. What is the best way to accomplish it using asp.net c#? If somebody already done it in the past I will be glad to take a look at source code. Thank you for useful suggestions.

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• Formatting when copying SQL data and pasting in Excel

  - by Mary-Chan

  I want to copy a sql result set and paste it in Excel. But the data I paste in to the spreadsheet doesn't want to recognize Excel formatting. So if I change a column to currency, it doesn't do anything. But...if I double click on a cell, THEN it applies the currency format. But only to that cell. How can I make it automatically recognize the Excel format? I must be something I'm missing. Hopefully somebody can help. :-)

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• CKeditor 3.0 - How to know which toolbar button is clicked

  - by understack

  Hi, I want to update few variables when any of the toolbar button (like bold, italic etc) is clicked. I'm unable to trap 'click' event on any of these buttons. Could somebody give me an example when clicking on 'bold' button would also pop up an alert box? How can I trap 'paste' event? I've googled a lot and searched ckeditor forum but couldn't find any solution. Any pointer would be really helpful. Thanks.

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• How to pass parameters to report model in Reporting Services

  - by savras

  I'm developing report in RS that show top N customers based on some criteria. It also allows to select number of customers and period of time. Is it possible to do it by using report model? Thing that it seems to be difficult is how to pass parameters determined by user. Another thing that in my oppinion is very disappointing is that i cannot use SQL query as dataset query, because it uses odd and elaborate XML. Although report model items seem to map its fields to query or table fields. I m concerning using report models because i need to provide uniform data model (the same tables and fields) for more or less different database schemas. It would be very nice if somebody would explain what can be done with report models and what can not.

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• JTable custom cell renderer to create row header

  - by hhj

  Can somebody please explain how I would create row headers? I already have the data and header texts set in the JTable: all I want to know is how I can use a cell renderer to take that first column (i.e. the row header column) and make it look like the column headers (i.e. the first row). Right now its background is white, so it looks like regular data. I want it to appear gray (or non-opaque I guess??). Oh and it should also not be selectable. Thanks.

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• treating json like an array

  - by tawheed

  I was doing some test with json and ran into serveral issues. hope somebody on this mailing list can help out. localStorage[LOC] = JSON.stringify(track); var boy = localStorage[LOC]; alert(boy); This is the data I get back [{"lat":42.5877511,"lng":-71.7873177,"acc":67,"date":"Sat Apr 14 2012 01:03:46 GMT-0400 (EDT)"}] I was wondering how I could access the json objects like we do in a regular array. For debugging purposes I did something like, alert(boy[0].lat); But the result I got back was undefined

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• What does xp_qv do in SQL Server?

  - by Chris

  Last night one of our SQL servers developed some major problems and after a colleague stopped, started, and all the usual things it started checking and rebuilding databases and is now running an extended stored procedure called "xp_qv". The internet seems to be very short of information on what this procedure does or anythign like that so I was hoping somebody here might be able to help. I should add that I assume it is meant to be running so the question isn't "Can I stop it" or anything like that, its just curiosity in what it is doing in the hope that it will help determine how long before things are usable again...

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• Events raised by BackgroundWorker not executed on expected thread

  - by Topdown

  A winforms dialog is using BackgroundWorker to perform some asynchronous operations with significant success. On occasion, the async process being run by the background worker will need to raise events to the winforms app for user response (a message that asks the user if they wish to cancel), the response of which captured in an CancelEventArgs type of the event. Being an implementation of threading, I would have expected the RaiseEvent of the worker to fire, and then the worker would continue, hence requiring me to pause the worker until the response is received. Instead however, the worker is held to wait for the code executed by the raise event to complete. It seems like method I am calling via the event call is actually on the worker thread used by the background worker, and I am surprised, since I expected to see it on the Main Thread which is where the mainform is running. Also surprisingly, there are no cross thread exceptions thrown. Can somebody please explain why this is not as I expect?

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• How To Get Type Info Without Using Generics?

  - by DaveDev

  Hi Guys I have an object obj that is passed into a helper method. public static MyTagGenerateTag<T>(this HtmlHelper htmlHelper, T obj /*, ... */) { Type t = typeof(T); foreach (PropertyInfo prop in t.GetProperties()) { object propValue = prop.GetValue(obj, null); string stringValue = propValue.ToString(); dictionary.Add(prop.Name, stringValue); } // implement GenerateTag } I've been told this is not a correct use of generics. Can somebody tell me if I can achieve the same result without specifying a generic type? If so, how? I would probably change the signature so it'd be like: public static MyTag GenerateTag(this HtmlHelper htmlHelper, object obj /*, ... */) { Type t = typeof(obj); // implement GenerateTag } but Type t = typeof(obj); is impossible. Any suggestions? Thanks Dave

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• How to unmangle exported symbols from C++ in dynamic libraries in XCode on OSX

  - by Gerald

  I've been trying to develop a dynamic library in C++ that can be run-time loaded in an application. I finally got it working, but it's a little ugly. I have a function that takes a pointer to a C++ class as an argument, which looks like this: bool registerGrindPlugin( Grind::PluginManager* mgr ); But of course it's being exported as: _Z19registerGrindPluginPN5Grind13PluginManagerE I tried a .c file with a simple function and it exported fine as "registerGrindPlugin", but of course I can't pass a C++ class as the argument that way. Soo... my question is, is there a way to unmangle or alias the exported symbol so that I don't have to use a monstrosity like Z19registerGrindPluginPN5Grind13PluginManagerE in my dlsym call? I did see something about -alias_list as a linker option, but I haven't quite figured out how to use it in XCode. If that is the solution, can somebody provide some more details on how to use this?

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• Objective c key path operators @avg,@max .....

  - by davide

  arr = [[NSMutableArray alloc]init]; [arr addObject:[NSNumber numberWithInt:4]]; [arr addObject:[NSNumber numberWithInt:45]]; [arr addObject:[NSNumber numberWithInt:23]]; [arr addObject:[NSNumber numberWithInt:12]]; NSLog(@"The avg = %@", [arr valueForKeyPath:@"@avg.intValue"]); This code works fine, but why? valueForKeyPath:@"@avg.intValue" is requesting (int) from each NSNumber, but we are outputting a %@ string in the log. If i try to output a decimal %d i get a number that possibly is a pointer to something. Can somebody explain why the integers become NSNumbers when i call the @avg operator?

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• How do I fix a font compatibilty issue from Mac to Windows, using Adobe Flash CS4?

  - by Michel Carroll

  Hi, I need to edit a Flash movie that somebody else developed in Adobe Flash CS3 on a Mac. I'm using Adobe Flash CS4 on Windows (Vista). However, the font that shows up on my computer is much bigger than on the .SWF that he produced. He used a custom font, which I had to add to my system Fonts folder. Because Adobe Flash detected the right fonts on my computer, it didn't map them to substitute fonts. I verified that Flash is indeed using the same font files that he used. I believe the fonts are being rendered differently because I'm using Windows. How do I fix this?

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