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Interfaces are data structures that contain member definitions and not actual implementation. They are useful when one wants to define a contract between members in different types that have different implementations. One can declare definitions for methods, properties, and indexers. Interface members are implicitly public.
When implementing multiple interfaces that contain a method with the same name and taking parameters of the same type in the same order (i.e. the same signature), similar to Java, C# allows both a single method to cover all interfaces and if necessary specific methods for each interface.
The Size property is an integer that can be read (get) and written (set). Similarly, the Name property is a string that can also be read and modified, but its value is stored in a separate (private) class variable _name. Omitting the set operation in a property definition makes the property read-only, while omitting the get operation makes it ...
This example illustrates the C# idea of properties, which are a special type of class member. Unlike Java, no explicit methods are defined; a public 'property' contains the logic to handle the actions. Note use of the built-in (undeclared) variable value.
A property, in some object-oriented programming languages, is a special sort of class member, intermediate in functionality between a field (or data member) and a method.The syntax for reading and writing of properties is like for fields, but property reads and writes are (usually) translated to 'getter' and 'setter' method calls.
C#: Since version 8.0, C# has support for default interface methods, [7] which have some properties of traits. [8] C++: Used in Standard Template Library and the C++ standard library to support generic container classes [9] [10] and in the Boost TypeTraits library. [11]
The term "fluent interface" was coined in late 2005, though this overall style of interface dates to the invention of method cascading in Smalltalk in the 1970s, and numerous examples in the 1980s. A common example is the iostream library in C++ , which uses the << or >> operators for the message passing, sending multiple data to the same ...
class name definition «inheriting from parentclass». «interfaces: interfaces.» method_and_field_declarations endclass. class name implementation. method_implementations endclass. interface name . members endinterface.