What is anonymous namespace in C++?

A namespace with no identifier before an opening brace produces an unnamed namespace. Each translation unit may contain its own unique unnamed namespace. In the previous example, the unnamed namespace permits access to i and variable without using a scope resolution operator. …

What is the syntax of namespace?

Syntax of namespace declaration: namespace – is the keyword used to declare a namespace. namespacename – is the name given to the namespace. int m, n – are the variables in the namespace_name’s scope.

What is inline namespace C++?

Inline namespaces are a library versioning feature akin to symbol versioning, but implemented purely at the C++11 level (ie. cross-platform) instead of being a feature of a specific binary executable format (ie. platform-specific).

What is the use of unnamed namespace?

Unnamed Namespaces They are directly usable in the same program and are used for declaring unique identifiers. In unnamed namespaces, name of the namespace in not mentioned in the declaration of namespace. The name of the namespace is uniquely generated by the compiler.

What is global namespace in C++?

The global namespace is the namespace that contains identifiers defined outside any explicit namespace. Its identifiers are availabe everywhere without additional notation. The function main above, for example, is in the global namespace.

Why do we use using namespace std?

So when we run a program to print something, “using namespace std” says if you find something that is not declared in the current scope go and check std. using namespace std; are used. It is because computer needs to know the code for the cout, cin functionalities and it needs to know which namespace they are defined.

What does using namespace do in C++?

Using namespace, you can define the context in which names are defined. In essence, a namespace defines a scope. C++ has a standard library that contains common functionality you use in building your applications like containers, algorithms, etc.

When should I use namespace C++?

A namespace defines a new scope. They provide a way to avoid name collisions. Namespaces in C++ are most often used to avoid naming collisions. Although namespaces are used extensively in recent C++ code, most older code does not use this facility.

What is use of anonymous namespace in C++?

2)We can have anonymous namespaces (namespace with no name). They are directly usable in the same program and are used for declaring unique identifiers. It also avoids making global static variable. The “anonymous” namespace you have created will only be accessible within the file you created it in.

How to create eventloginstaller class in Microsoft Docs?

Gets or sets the path of the resource file that contains message formatting strings for the source. Gets or sets the path of the resource file that contains message parameter strings for the source. Gets or sets the installer containing the collection that this installer belongs to. Gets or sets the ISite of the Component.

How to create a new event source in eventlog?

You can configure a new source using an EventLogInstaller, or using the CreateEventSource method. You must have administrative rights on the computer to create a new event source. You can create an event source for an existing event log or a new event log.

How to add event log to installers collection?

Allows you to install and configure an event log that your application reads from or writes to when running. The following code example sets the installation properties for a new event source. The code example sets the source name and the event log name, and adds the EventLogInstaller to the Installers collection.

When to use event loginstaller in installutil.exe?

The EventLogInstaller is used by the Installutil.exe (Installer Tool) when installing an event log. The EventLogInstaller class can install event logs only on the local computer.