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Can enum be generic?
Extra Credit: It turns out that a generic restriction on enum is possible in at least one other . NET language besides MSIL: F#. This one is easier to maintain since it’s a well-known language with full Visual Studio IDE support, but you still need a separate project in your solution for it.
Can a generic class be derived from another generic class?
In the same way, you can derive a generic class from another generic class that derived from a generic interface. You may be tempted to derive just any type of class from it. One of the features of generics is that you can create a class that must implement the functionality of a certain abstract class of your choice.
Can I extend enum in Java?
No, we cannot extend an enum in Java. Java enums can extend java. lang. Enum class implicitly, so enum types cannot extend another class.
What are the generic method?
Generic methods are methods that introduce their own type parameters. Static and non-static generic methods are allowed, as well as generic class constructors. The syntax for a generic method includes a list of type parameters, inside angle brackets, which appears before the method’s return type.
Where is generic type constraint?
The where clause in a generic definition specifies constraints on the types that are used as arguments for type parameters in a generic type, method, delegate, or local function. Constraints can specify interfaces, base classes, or require a generic type to be a reference, value, or unmanaged type.
Why do we need a generic enum in C #?
Our generic enum will also rely on an abstract class to provide basic functionality and will itself need to be a class (i.e. a reference type), because it’s not possible for custom value types to inherit from anything other than System.ValueType or System.Enum.
Do you have to instantiate a generic enum by name?
All such constants must be public. You can instantiate a generic enum either by name, index or value. As I dislike throwing exceptions when there is a reasonably graceful alternative, if you try to instantiate a generic enum with an invalid parameter, then null is returned.
Is it possible to access the members of an enum class?
However, since the general type is Enum I can only access the member and methods of the Enum class. So is it possible to implement it the way I meant to or what other approach should I use?
Which is enum inherits from System.ValueType?
All ‘ordinary’ enums inherit from an abstract class called System.Enum which itself inherits from System.ValueType. Enums are therefore value types themselves. The System.Enum class contains a number of static methods which can be applied to any enum, such as GetNames, GetValues, IsDefined, Parse and TryParse.