Code-Sage

C# language feature:

  • Generics

applies to

  • classes, interfaces

benefit

  • Facilitates code reuse, type safety, and performance. Generics are commonly used with collection classes.

how to use

  • 1) Insert <T> after class name and specify Type T where desired within class.
  • 2) Declare class object and specify desired type.

note

  • Multiple types may be specified e.g. <T1, T2>

example:

    class GenericList<objectType>{  // 1) Insert `<T>` after class name and
        public void Add(objectType listObject) { } // specify Type `T` where desired within class.
    }

    class Use_of_Generic_Class_Example
    {
        // 2) Declare class object and specify desired type i.e int.
        GenericList<int> NumberList; 
    }
C# articles

csharp v2 +

Anonymous methods * Co- and Contra-variance for delegates * Delegate inference * Generics * Getter and setter separate accessibility * Iterators * Method group conversions (delegates) * Nullable types * Partials * Static classes *

csharp v3 +

Anonymous types * Auto-Implemented properties * Expression trees * Extension methods * Implicitly typed local variables * Lambda expression * Object and collection initializers * Partial methods * Query expressions *

csharp v4 +

Generic co- and contravariance * Named and optional arguments *

csharp v5 +

Asynchronous methods * Caller info attributes *

csharp v6 +

A note for CSharp 6 and beyond * Allow await in catch and finally blocks * Auto property initializers * Default values for Read-only Auto-properties * Dictionary (index) initializers * Exception filters * Expression-bodied members * Import of static type members into namespace * Null propagator (null-conditional operator, succinct null checking) * String interpolation * nameof operator *

csharp v7 +

Binary literals * Deconstruction * Digit separators * Expression bodied constructors and finalizers * Expression bodied getters and setters * Generalized async return types * Local functions * Out variables * Pattern matching * Ref returns and locals * Tuples *