What is a good pattern for using a Global Mutex in C#?

What is a good pattern for using a Global Mutex in C#?

The Mutex class is very misunderstood, and Global mutexes even more so.What is good, safe pattern to use when creating Global mutexes?One that will workRegardless of the locale my machine is inIs guaranteed to release the mutex properlyOpti

What are POD types in C++?

What are POD types in C++?

I've come across this term POD-type a few times... what does it mean? 1:POD stands for Plain Old Data - that is, a class (whether defined with the keyword struct or the keyword class) without constructors, destructors and virtual member

Unified static class between HttpContext and SignalR HubCallerContext

Unified static class between HttpContext and SignalR HubCallerContext

I have a lot of code that depends on HttpContext.Current,and I noticed that requests that come from SignalR hubs have HttpContext.Current == null,so my code breaks, for example:HttpContext.Current.Request.IsAuthenticatedSo I came up with fo

Swift - How to set initial value for NSUserDefaults

Swift - How to set initial value for NSUserDefaults

I have a switch called soundSwitch, I am saving the state of the button using an user default as such:@IBAction func soundsChanged(sender: AnyObject) { if soundSwitch.on{ defaults.setBool(true, forKey: "SoundActive")

Asp.Net MVC3 RC Razor views : syntax for embedding code inside  block

Asp.Net MVC3 RC Razor views : syntax for embedding code inside block

Having trouble embedding c# code inside a javascript block with MVC3 RC1 razor view. What syntax should I use to make this working? I get warnings eg. Expected constant on the isOk variable among other. (Without text tag, the following code

How to select a map pin programmatically

How to select a map pin programmatically

I am new to Maps Concept. Please find the attached image once.when i click the "pin" i am getting message says "Admire your smile" or any text..... Now i want like... when we select the table view, i need to raise that message for that pi

Exhaustive condition of switch case in Swift

Exhaustive condition of switch case in Swift

The Apple documentation says Every switch statement must be exhaustive. That is, every possible value of the type being considered must be matched by one of the switch cases.So in new Xcode I have placed a code like thisprintln(UInt16.mi

cross-user C# mutex

cross-user C# mutex

My app is forced to use a 3rd party module which will blue-screen Windows if two instances are started at the same time on the same machine. To work around the issue, my C# app has a mutex: static Mutex mutex = new Mutex(true, "{MyApp_b

Three curly brackets together in php source code

Three curly brackets together in php source code

I just downloaded complete source code of PHP from php.net (PHP 5.4.0 [tar.bz2]).They are often using three curly brackets together as given below (The following code snippet extracted form ext/ctype/ctype.c.)/* {{{ proto bool ctype_digit(

OCaml explicit type signatures

OCaml explicit type signatures

In Haskell, it is considered good practice to explicitly declare the type signature of your functions, even though it can (usually) be inferred. It seems like this isn't even possible in OCaml, e.g. val add : int -> int -> int ;;gives me an

Map collection of objects

Map collection of objects

I am trying to introduce Automapper into an application for the first time, but I keep getting an error saying I have some invalid arguments.My model:namespace StoreGradesLib.Models{ public class Store { [Key] public int

Powerpoint Viewer control C# / VB / .NET

Powerpoint Viewer control C# / VB / .NET

Anyone know how to make one or how to download a control to view powerpoint documents?I've searched, but the only thing that comes up is this, which is decidedly not free. I'm sure Microsoft must have a control that does this already.Make o

Using SLRequest in iOS 6 with Facebook

Using SLRequest in iOS 6 with Facebook

I'm currently trying to use an SLRequest to post a status on to facebook this is the code i have:ACAccountStore *accountStore = [[ACAccountStore alloc] init]; ACAccountType *accountType = [accountStore accountTypeWithAccountTypeIdentifie

signalR and CustomTypeConverter

signalR and CustomTypeConverter

I'm want to serialize derived type as explained here but for signalRI want to implement my custom converter derived from JsonConverterI added it to signalR as folowsvar serializer = GlobalHost.DependencyResolver.GetService(typeof(JsonSeri

UISplitViewController with multiple Detail View Controller

UISplitViewController with multiple Detail View Controller

I am making a splitView application and i want different detail view controllers for all i have studies a lot found that use apples MultipleDetailView Controllers but it is not fully adopted so that any one can use it so is there any way to

How do I export class functions, but not the entire class in a DLL

How do I export class functions, but not the entire class in a DLL

I have developed a Win32 DLL, providing the details below, and want to create a CLI/C++ wrapper for the functions Connnect and LogOut.I know that entire classes and functions can be exported from a DLL.class CClientLib{ public:CClientLib (v

Define multiple methods with parameters from variadic templates

Define multiple methods with parameters from variadic templates

I want to define a base template class in a way so that it takes variadic template arguments and defines a virtual method for each argument, where the parameter is the argument type.E.g. Base should give me 3 virtual methods: Foo(int), Foo(

Finalizers and Dispose

Finalizers and Dispose

I've got a class named BackgroundWorker that has a thread constantly running. To turn this thread off, an instance variable named stop to needs to be true. To make sure the thread is freed when the class is done being used, I've added IDisp

Make .NET WebBrowser not to share cookies with IE or other Instances

Make .NET WebBrowser not to share cookies with IE or other Instances

Since WebBrowser in C# shares cookies with all other instances of WebBrowsers including IE I would like for a WebBrowser to have it's own cookie container that doesn't share any cookies that was created previously in IE or other instances.

How do I make an ellipse blink?

How do I make an ellipse blink?

I am trying to make a custom control in WPF. I want it to simulate the behavior of a LED that can blink.There are three states to the control: On, Off, and Blinking.I know how to set On and Off through the code behind, but this WPF animati

MVC5 ApplicationUser custom properties

MVC5 ApplicationUser custom properties

I am trying to get to grips with the new Membership system introduced in ASP.NET MVC 5 and I've come across a small issue which I am pretty sure you will be able to help me with.I am going based off this tutorial and have introduced custom

Why does string extraction from a stream set the eof bit?

Why does string extraction from a stream set the eof bit?

Let's say we have a stream containing simply:helloNote that there's no extra \n at the end like there often is in a text file. Now, the following simple code shows that the eof bit is set on the stream after extracting a single std::string.

How to access generic property without knowing the closed generic type

How to access generic property without knowing the closed generic type

I have a generic Type as followspublic class TestGeneric{ public T Data { get; set; } public TestGeneric(T data) { this.Data = data; }}If i have now an object (which is coming from some external source) from which i know

“Variable Undeclared” error when compiling to iOS Device, but not for Simulator

“Variable Undeclared” error when compiling to iOS Device, but not for Simulator

I have an custom UIVIewController that is the base class for other controllers and has an instance of a custom UIView variable that is accessed by inherited the [email protected] BaseViewController : UIViewController {

ASP.net MVC3 - Razor Views and PartialViews with Ajax Postbacks

ASP.net MVC3 - Razor Views and PartialViews with Ajax Postbacks

I have been very unsuccessful in getting this to work!In a [email protected] [email protected]{ ViewBag.Title = "Forgot Password";}ForgotPassword @Html.Partial("_ForgotPasswordUserNameAjax", ViewData.Model)I rend