Extension for c program

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Binary Executables file produced as the output of the program called the linker. The linker link together a number of object files to produce a binary file that can be directly executed. In other operating system Binary Executables file have. We may make mistakes spelling, program bug, typing mistake and etc.

We highly respect your findings. The following example demonstrates the rules that the C compiler follows in determining whether to bind a method call to an instance method on the type, or to an extension method. The static class Extensions contains extension methods defined for any type that implements IMyInterface.

Classes A , B , and C all implement the interface. The MethodB extension method is never called because its name and signature exactly match methods already implemented by the classes. When the compiler can't find an instance method with a matching signature, it will bind to a matching extension method if one exists. In the past, it was common to create "Collection Classes" that implemented the System.

While there's nothing wrong with creating this type of collection object, the same functionality can be achieved by using an extension on the System.

Extensions have the advantage of allowing the functionality to be called from any collection such as an System. Array or System. An example of this using an Array of Int32 can be found earlier in this article. When using an Onion Architecture or other layered application design, it's common to have a set of Domain Entities or Data Transfer Objects that can be used to communicate across application boundaries. These objects generally contain no functionality, or only minimal functionality that applies to all layers of the application.

Extension methods can be used to add functionality that is specific to each application layer without loading the object down with methods not needed or wanted in other layers. Rather than creating new objects when reusable functionality needs to be created, we can often extend an existing type, such as a. As an example, if we don't use extension methods, we might create an Engine or Query class to do the work of executing a query on a SQL Server that may be called from multiple places in our code.

However we can instead extend the System. SqlConnection class using extension methods to perform that query from anywhere we have a connection to a SQL Server. Other examples might be to add common functionality to the System. String class, extend the data processing capabilities of the System. File and System. Stream objects, and System. Exception objects for specific error handling functionality.