Method dispatch for static abstract and static virtual methods declared in interfaces is resolved using the compile time type of an expression. Alternatively, when double is the type argument, the static members declared on the double type are invoked. When the type parameter T denotes the type argument int, the static members declared on int are invoked. For example, the int type implements INumber. The compiler uses the type argument to resolve calls to the methods and operators declared in the interface declaration. For example, the INumber interface declares that T must implement INumber. Furthermore, most interfaces that declare static virtual or static abstract methods declare that one of the type parameters must implement the declared interface. ![]() Therefore, static virtual methods are almost exclusively declared in generic interfaces. Instead, the compiler uses type information available at compile time. The static virtual and static abstract methods declared in interfaces don't have a runtime dispatch mechanism analogous to virtual or abstract methods declared in classes. The compiler must resolve calls to static virtual and static abstract methods at compile time. These interfaces define common mathematical operators that are implemented by many numeric types. You can see examples in the numeric types in the. This feature enables generic algorithms to specify number-like behavior. Interfaces can declare that implementing types must define operators or other static members.
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