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• JDBC: Does the connection break if i lose reference to the Connection object?

  - by wretrOvian

  Hi. If i have the following method - public static void C() { Connection con = DriverManager.getConnection(); .... // code return; } and i dont call con.close() , will the connection terminate automatically once the method returns?

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• WebView load javascript on the fly

  - by ADAM

  I have the following code which loads and html file into a webview - (void)awakeFromNib{ NSString *resourcesPath = [[NSBundle mainBundle] resourcePath]; NSString *htmlPath = [resourcesPath stringByAppendingString:@"/main.html"]; [[self mainFrame] loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:htmlPath]]]; } How would i dynamically load a css file (in the most efficient manner) as it does not suit to have the css file link in the html file

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• Passing template into boost function

  - by Ockonal

  template <class EventType> class IEvent; class IEventable; typedef boost::function<void (IEventable&, IEvent&)> behaviorRef; What is the right way for passing template class IEvent into boost function? With this code I get: error: functional cast expression list treated as compound expression error: template argument 1 is invalid error: invalid type in declaration before ‘;’ token

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• Why does this generate a segmentation fault?

  - by avd

  #include<stdio.h> void foo(int **arr) { arr[1][1]++; } main() { int arr[20][20]; printf("%d\n",arr[1][1]); foo((int**)arr); printf("%d\n",arr[1][1]); }

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• C++ list<T>::iterator cant be used in derived class template

  - by Roman Pfneudl

  g++ compiler gives this error: expected `;' before 'it' template <typename T> class myList : public std::list<T> { public: void foo () { std::list<T>::iterator it; // compiler error as above mentioned, why ??? } }; Thanks.

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• Resolve instance - Autofac

  - by user137348

  I'm trying to figure out how to resolve a instance somewhere in the code. At the application startup I registered a type static void Main() { var builder = new ContainerBuilder(); builder.RegisterType<Foo>().As<IFoo>(); } Now, how can I resolve an instance somewhere in the code ? In structure mam there is a static object ObjectFactory.GetInstance<IFoo>()

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• Custom route does not work in ASP.net MVC 3

  - by user603007

  I am trying to implement my custom route in ASP.net MVC 3 but I get this error: The resource cannot be found. global.asax public static void RegisterRoutes(RouteCollection routes) { routes.IgnoreRoute("{resource}.axd/{*pathInfo}"); routes.MapRoute( "mycontroller", // Route name "{controller}/{name}", // URL with parameters new { controller = "MyController", action = "Search" } // Parameter defaults ); } MyController.cs public class MyController : Controller { public ActionResult Search(string name) { return Content(name); } }

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• "The operation has timed out" when trying to send email

  - by user1718859

  protected void Button1_Click(object sender, EventArgs e) { try { SmtpClient sm = new SmtpClient(); MailMessage ms = new MailMessage(); ms.To.Add(new MailAddress(TextBox1 .Text )); ms.Subject = TextBox2.Text; ms.Body = TextBox3.Text; ms.IsBodyHtml = true; sm.Send(ms); } catch (Exception el) { Response.Write(el.Message); } }

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• What CLR do when compare T with null, and T is a struct?

  - by Fujiy

  private static void SaveOrRemove<T>(string key, T value) { if (value == null) { Console.WriteLine("Remove: " +key); } .... } If I call passing 0 to value: SaveOrRemove("MyKey", 0), the condition (value == null) is false, then CLR dont make a (value == default(T)). What really happens?

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• question about interface

  - by davit-datuashvili

  i have posted this question http://stackoverflow.com/questions/2874487/how-can-i-implement-this-python-snippet-in-java i have compiled it now i need to use in main project public static void main(String[]args){ } ? can anybody show me example?

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• question about interface

  - by davit-datuashvili

  i have posted this question http://stackoverflow.com/questions/2874487/how-can-i-implement-this-python-snippet-in-java i have compiled it now i need to use in main project public static void main(String[]args){ } ? can anybody show me example?

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• question about interface

  - by davit-datuashvili

  i have posted this question http://stackoverflow.com/questions/2874487/how-can-i-implement-this-python-snippet-in-java i have compiled it now i need to use in main project public static void main(String[]args){ } ? can anybody show me example?

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• deleteRowsAtIndexPaths- crahes application [closed]

  - by Tushar Chutani

  (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath { if (editingStyle == UITableViewCellEditingStyleDelete) { NSLog(@"delet it"); // Delete the row from the data source. [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:YES]; } else if (editingStyle == UITableViewCellEditingStyleInsert) { // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view. } } why is this crashing my application

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• Rewriting a statement using LINQ(C#)

  - by Thinking

  Is it possible to write the folowing using lambda(C#) private static void GetRecordList(List<CustomerInfo> lstCustinfo) { for (int i = 1; i <= 5; i++) { if (i % 2 == 0) lstCustinfo.Add(new CustomerInfo { CountryCode = "USA", CustomerAddress = "US Address" + i.ToString(), CustomerName = "US Customer Name" + i.ToString(), ForeignAmount = i * 50 }); else lstCustinfo.Add(new CustomerInfo { CountryCode = "UK", CustomerAddress = "UK Address" + i.ToString(), CustomerName = "UK Customer Name" + i.ToString(), ForeignAmount = i * 80 }); } }

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• TableView Background image going over cell textLabel

  - by Alex Trott

  Currently my tableview looks like this: as you can see, cell.textLabel and cell.detailTextLable both load this background, and i can't work out how to get them to stop loading the background, and for it only to be the backing on the cell. Here's my current code to change the cell: - (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath { [cell setBackgroundColor:[UIColor colorWithPatternImage:[UIImage imageNamed:@"tableCell.png"]]]; } How can i get round this problem? Thanks in advance.

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• What is the purpose of using a reference to a reference in C++?

  - by SilverSun

  In my adventures studying the boost libraries, I've come across function signatures that have parameters which are a reference to a reference to an object. Example: void function(int && i); What is the purpose/benefit of doing it this way rather than simply taking a reference to an object? I assume there is one if it's in boost.

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• Are compilers smart enough to detect a no-op function?

  - by 0x80

  If I write a function like this: void doMaybeNothing() { #ifndef IM_LAZY doSomething(); #endif } Are modern compilers smart enough to detect a no-op function and optimize so that there are no cycles wasted? Or is there always a small performance impact?

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• C++ static array leading to memory leak?

  - by MDonovin

  Lets say I have something like... void foo() { char c[100]; printf("this function does nothing useful"); } When foo is called, it creates the array on the stack, and when it goes out of scope, is the memory deallocated automatically? Or is c destroyed, but the memory remains allocated, with no way to access it/get it back except restarting the computer?

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• Delegates with explicit "this" pointer?

  - by Qwertie

  Is it possible to adapt a method like this function "F" class C { public void F(int i); } to a delegate like Action<C,int>? I have this vague recollection that Microsoft was working on supporting this kind of adaptation. But maybe I misremembered!

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• Create a custom button

  - by Beppi Menozzi

  Sorry if this is too basic. I created a new class that extends Button: public class MyButton extends Button { private Context ctx; public MyButton(Context context) { super(context); ctx = context; } private void click() { // DO WHAT I NEED (FOR EXAMPLE CHANGE BACKGROUND) } } How can make it possible that, when I setOnClickListener() from another class where I instantiated this object, the click() method is called automatically? Thanks.

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• How to concatenate two arrays in Java?

  - by Antti Sykäri

  I need to concatenate two String arrays in Java. void f(String[] first, String[] second) { String[] both = ??? } What is the easiest way to do this?

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• saving an image object in sql server database from action method

  - by user3532152

  [HttpPost] public void Test(HttpPostedFileBase file) { UsersContext db = new UsersContext(); byte[] image = new byte[file.ContentLength]; file.InputStream.Read(image, 0, image.Length); CrimeReport i = new CrimeReport { ImageId=1, ImageName="Anjli",ImageContent = image, Active=true }; db.CrimeReports.Add(i); db.SaveChanges(); } I am getting an exception on db.CrimeReports.Add(i);

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• Root base class in C++

  - by Littlesmith

  Every object in .NET inherits (directly or indirectly) from the common root base "Object". Is there such a common object root in C++? How do I pass any object to a function? public void DoSomeStuff(object o) { ... }

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• what is return type of new in c++?

  - by kam

  Hi All, in c, Malloc returns void* but in c++, what new returns? double d = new int; what is it return? Thanks, Arul

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• How to declare strings in enum in C

  - by Sridevi

  Hello, typedef enum testCaseId { "TC-HIW-0019" = 0, "TC-HIW-0020", "TC-HIW-0021" } testCaseId; I need my test cases to be represented in enum. In my test function, I need to switch between the test cases like: void testfunc(uint8_t no) { switch(no) { case 0: case 1: default: } } So can anyone help on how to use enum to declare strings.

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