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  • C++ character to int

    - by Vit
    Hi, what happens when you cin letter to int variable? I tried simple code to add 2 int numbers, first read them, than add them. But when I enter letter, it just fails and prints tons of numbers to screen. But what causes this error? I mean, I expected it to load and use ASCII code of that letter.

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  • properties declared beside the constructor c++

    - by numerical25
    I am very very new to C/C++ and not sure what the method is called. But thats why I am here trying to find the answer. let me show you an example MyClass::MyClass():valueOne(1), valueTwo(2) { //code } Where valueOne and valueTwo class properties that are assigned values outside of the body, what method is this called and why is it done this way. Why not do it this way MyClass::MyClass() { valueOne = 1; valueTwo = 2 //code } if anyone can help me out that will be great. thanks

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  • Can someone tell me why my dataset wont save correctly to the database in simple winforms app?

    - by Mike
    I have been struggling with this all day and I know it is probably something stupid. My code is below. If I call save then exit my program and start again I can save images to my events but if I just call save when I try to add an image and call save again I get a foreign key error. From what I know I thought my save method was updating the database from my dataset so the event associated with the image should exist. Anyway here is my save method... Private Sub Save() Me.Validate() EventsBindingSource.EndEdit() ImagesBindingSource.EndEdit() TableAdapterManager.UpdateAll(EventDataSet) EventDataSet.AcceptChanges() End Sub Am I doing this wrong? Is this enough detail?

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  • Best approach to update a control after an Ajax request?

    - by Cuga
    I have a webpage that fires off an Ajax request which stores some data to a database and I want to update the webpage so that the user can see their changes have been submitted. There are at least 3 ways I can think of accomplishing this: Immediately update the webpage with plain JavaScript by grabbing the contents of the user's inputted text and immediately inserting it where it belongs. Have the ajax call return the stored text as the response, grab the response, and then insert this text where it belongs on the page using JavaScript Have the ajax call return a flag (say, true for successful db write, false otherwise), and if the flag is true, use JavaScript to grab the user's contents from the input control and insert it where it belongs elsewhere on the page Or another method not mentioned...? I don't mean this to be subjective, I just don't know which would be the best method to apply. My instinct tells me to go with the third item (return a flag, then update the field). Is this the best way? Thanks

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  • How to prompt for username and password entry in C# / SQL ASP.NET web app?

    - by salvationishere
    How do I prompt for username and password in my C#/SQL web application? This was developed in VS 2008 on a 32-bit XP. The current connection string I'm using in my web.config file is: <add name="AdventureWorksConnectionString2" connectionString="Data Source=SIDEKICK;Initial Catalog=AdventureWorks;Persist Security Info=false; " providerName="System.Data.SqlClient" /> When I select Basic Authentication it pops up the warning: "The authentication option you have chosen results in passwords being sent over the network without data encryption..." How do I choose this authentication method and still send passwords over securely? So essentially I am looking for the most secure authentication method but that still requires users to input password?

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  • load balance timeout SQL connection string

    - by george9170
    It seems that if there is a sql memory leak somewhere and you dont have time to find it you can use the load balance timeout option in a sql connection string to destory the connection after x seconds. Am i right in assuming I can set the load balance time out to 30-40 seconds and then hunt for the leak latter, while in the mean time the leak will not affect my application too much.

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  • How to yield a single element from for loop in scala?

    - by Julio Faerman
    Much like this question: Functional code for looping with early exit Say the code is def findFirst[T](objects: List[T]):T = { for (obj <- objects) { if (expensiveFunc(obj) != null) return /*???*/ Some(obj) } None } How to yield a single element from a for loop like this in scala? I do not want to use find, as proposed in the original question, i am curious about if and how it could be implemented using the for loop. * UPDATE * First, thanks for all the comments, but i guess i was not clear in the question. I am shooting for something like this: val seven = for { x <- 1 to 10 if x == 7 } return x And that does not compile. The two errors are: - return outside method definition - method main has return statement; needs result type I know find() would be better in this case, i am just learning and exploring the language. And in a more complex case with several iterators, i think finding with for can actually be usefull. Thanks commenters, i'll start a bounty to make up for the bad posing of the question :)

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  • Browser forgets about registered cookie after leaving domain

    - by Sergej Andrejev
    I have following problem. I register a cookie Set-Cookie EhdSite_SessionId=b0ptrr45xgclea55kjqp2o45; path=/; HttpOnly Do something on the same host (user always sends cookie header) Cookie EhdSite_SessionId=b0ptrr45xgclea55kjqp2o45 then I redirect user to other host After filling all the required data user went back to first host Here user doesn't send the cookie Does that mean that without expiration date cookie is destroyed by browser not when closing browser but when leaving the domain

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  • comparing int values in android

    - by user1183066
    I am making an android game that is checking the players health value when this method is being runned. But however, it's not reacting. It doesn't do anything, when the value is less than 3, it shouldn't do anything, but when it is equal to 3, it should run a method. Please help me and thanks SO much in advance! This is the code that i am using: private void checkLivesLeftValue() { if (livesLeftValue == 3) { //Message to display: "You lost! onMethod(); } else { livesLeftValue = livesLeftValue + 1; } }

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  • Using TDD: "top down" vs. "bottom up"

    - by Christian Mustica
    Since I'm a TDD newbie, I'm currently developing a tiny C# console application in order to practice (because practice makes perfect, right?). I started by making a simple sketchup of how the application could be organized (class-wise) and started developing all domain classes that I could identify, one by one (test first, of course). In the end, the classes have to be integrated together in order to make the application runnable, i.e. placing necessary code in the Main method which calls the necessary logic. However, I don't see how I can do this last integration step in a "test first" manner. I suppose I wouldn't be having these issues had I used a "top down" approach. The question is: how would I do that? Should I have started by testing the Main() method? If anyone could give me some pointers, it will be much appreciated.

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  • Refactor the following two C++ methods to move out duplicate code

    - by ossandcad
    I have the following two methods that (as you can see) are similar in most of its statements except for one (see below for details) unsigned int CSWX::getLineParameters(const SURFACE & surface, vector<double> & params) { VARIANT varParams; surface->getPlaneParams(varParams); // this is the line of code that is different SafeDoubleArray sdParams(varParams); for( int i = 0 ; i < sdParams.getSize() ; ++i ) { params.push_back(sdParams[i]); } if( params.size() > 0 ) return 0; return 1; } unsigned int CSWX::getPlaneParameters(const CURVE & curve, vector<double> & params) { VARIANT varParams; curve->get_LineParams(varParams); // this is the line of code that is different SafeDoubleArray sdParams(varParams); for( int i = 0 ; i < sdParams.getSize() ; ++i ) { params.push_back(sdParams[i]); } if( params.size() > 0 ) return 0; return 1; } Is there any technique that I can use to move the common lines of code of the two methods out to a separate method, that could be called from the two variations - OR - possibly combine the two methods to a single method? The following are the restrictions: The classes SURFACE and CURVE are from 3rd party libraries and hence unmodifiable. (If it helps they are both derived from IDispatch) There are even more similar classes (e.g. FACE) that could fit into this "template" (not C++ template, just the flow of lines of code) I know the following could (possibly?) be implemented as solutions but am really hoping there is a better solution: I could add a 3rd parameter to the 2 methods - e.g. an enum - that identifies the 1st parameter (e.g. enum::input_type_surface, enum::input_type_curve) I could pass in an IDispatch and try dynamic_cast< and test which cast is NON_NULL and do an if-else to call the right method (e.g. getPlaneParams() vs. get_LineParams()) The following is not a restriction but would be a requirement because of my teammates resistance: Not implement a new class that inherits from SURFACE/CURVE etc. (They would much prefer to solve it using the enum solution I stated above)

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  • Whats the difference between \z and \Z in a regular expression and when and how do I use it?

    - by Mister M. Bean
    From http://java.sun.com/j2se/1.5.0/docs/api/java/util/regex/Pattern.html: \Z The end of the input but for the final terminator, if any \z The end of the input But what does it mean in practice? Can you give me an example when I use either the \Z or \z. In my test I thought that "StackOverflow\n".matches("StackOverflow\\z") will return true and "StackOverflow\n".matches("StackOverflow\\Z") returns false. But actually both return false. Where is the mistake?

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  • Html.ActionLink in a button

    - by Pomster
    I Am trying to connect to a method in my controller, with a button. I can connect though this link: @Html.ActionLink("Print", "Print", new { id = Model.SalesContractId}) But i Don't want a link, i want my button on my dialog to do it. I have tried the following: $('#btnDialogPrint').click(function () { location.href = '<%= Url.Action("Print", "Print", new { id = Model.SalesContractId}) %>'; }); But it just redirect me to a page that say bad request. namespace Contract.Controllers { public class ContractController : Controller { CompassEntities db = new CompassEntities(); public ActionResult Print(int id) { return View(""); // This can be removed and Print code may be added } Don't worry about the code inside i will get to that once i get inside this method. Could i maybe attach a link here? <input type="button" value="Print" id="btnDialogPrint" />

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  • C++ : Swapping template class elements of different types?

    - by metamemetics
    template< class T1, class T2 > class Pair { T1 first; T2 second; }; I'm being asked to write a swap() method so that the first element becomes the second and the second the first. I have: Pair<T2,T1> swap() { return Pair<T2,T1>(second, first); } But this returns a new object rather than swapping, where I think it needs to be a void method that changes its own data members. Is this possible to do since T1 and T2 are potentially different class types? In other words I can't simply set temp=first, first=second, second=temp because it would try to convert them to different types. I'm not sure why you would potentially want to have a template object that changes order of its types as it seems that would cause confusion but that appears to be what I'm being asked to do.

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  • An Alternative to Views?

    - by Abs
    Hello all, I am just reading this article and I came across this: Filter: Remove any functions in the WHERE clause, don't include views in your Transact-SQL code, may need additional indexes. If I do not use views, what are the alternatives? I mean, in my situation, I want to select some data from a table and then use a few other select queries to work on the subset of data from the first select query? How can I do this efficiently? Thanks all

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  • Rails Application expecting me to restart my webrick server for any change in my controller.

    - by Vamsi
    I am working on an existing Rails 2.3.x application, So I was working on it and it was a messy code with great difficulty I was able to run the application. But now for every small change in one of my controller it is expecting me to restart my serer otherwise the changes are not reflecting back, Let's take an example scenario here, Let's just say in one of the before_filter method I just added a puts statement on top of the method and it was not printing in the log, after I restart the server it is printing, Can some one please let me know if I am missing something here.

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  • App crashes on back button / Activities & Intents

    - by paradroid666
    I have an android application which starts a new activity Intent startAuthorization = new Intent(AndroidActivity, AuthorizeUser.class); startActivityForResult(startAuthorization,4711); When that new activity is done (a ok button is clicked) I call setResult(RESULT_OK, returnResult); finish(); Which works fine. In case the user doesn't click the okay button but uses the return button of the phone (this arrow pointing around to the left) the application has a force close. I have set a breakpoint on the first line of my method onActivityResult but the debugger never stops there. I have no idea where the issue comes up - how can I find out? Is there a method I have to overwrite to handle this back button?

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  • javascript string difference

    - by Konrad
    What is the difference (if any) between the javascript strings defined below? var str1 = "Somestring"; var str2 = 'Somestring'; "" and '' mean two very different things to me predominantly writing code in C++ :-) EDIT: If there is no difference why are there two ways of achieving the same thing and which is considered better practice to use and why. Thanks!

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  • [js] how combine 2 functions on submit?

    - by Mahmoud
    hey there, as you can see, i have to functions first to check if all forms are not empty and the second function is to verify the captcher, when i combine them together both work at the same time, i want to first to verify the first function, when that function returns true then the other function starts, here is the code that i used on form <form action="reg.php" method="post" enctype="application/x-www-form-urlencoded" onsubmit=" Checking(this); return jcap();" > As you can see both function execute at the same time so i tried this <form action="reg.php" method="post" enctype="application/x-www-form-urlencoded" onsubmit=" if(Checking(this) == true ){ return jcap();}" > is bypass both

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  • Get Dataset returned from an ajax enabled wcf service....

    - by Pandiya Chendur
    I call an ajax enabled wcf service method , <script type="text/javascript"> function GetEmployee() { Service.GetEmployeeData('1','5',onGetDataSuccess); } function onGetDataSuccess(result) { Iteratejsondata(result) } </script> and my method is , [OperationContract] public string GetEmployeeData(int currentPage,int pageSize) { DataSet ds = GetEmployeeViewData(currentPage,pageSize); return GetJSONString(ds.Tables[0]); } My Dataset ds contains three datatable but i am using the first one for my records... Other two datatables have values how can i get them in result... function onGetDataSuccess(result) { Iteratejsondata(result) } Any suggestion...

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  • Scala : reference is ambiguous (imported twice)

    - by tk
    I want to use a method as a parameter of another method of the same class. I have a class and objects which are companions: class mM(var elem:Matrix){ //apply a function on a dimension rows (1) or cols (2) def app(func:Iterable[Double]=>Double)(dim : Int) : Matrix = { ... } //utility function def logsumexp(): Double = {...} } object mM{ def apply(elem:Matrix):mM={new mM(elem)} def logsumexp(elem:Iterable[Double]): Double ={ this.apply(elem.asInstanceOf[Matrix]).logsumexp() } } Normally I use logsumexp like this mM(matrix).logsumexp but if want to apply it to the rows I can't use mM(matrix).app(mM.logsumexp)(1), I get the error: error: reference to mM is ambiguous; it is imported twice in the same scope by import mM and import mM What is the most elegant solution ? Should I change logsumexp() to another class ? Thanks,=)

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