Code-Sage

C# language feature:

  • Delegate inference

applies to

  • delegates

benefit

  • Allows direct assignment of a method to a delegate variable, without first wrapping it in a delegate object.

how to use

  • 1) Define delegate.
  • 2) Declare a function with function body matching delegate signature.
  • 3) Assign function to delegate variable.

see also

  • Anonymous methods, Method group conversions

example:

    delegate void Delegate_Definition(int x); // 1) Define delegate.
    class Delegate_Inference_Example
    {
        // 2) Declare a function with function body matching delegate signature.
        void my_function(int k) { System.Console.WriteLine(k); }

        public void inference_example(){
            // 3) Assign function to delegate variable.
            Delegate_Definition newwaydelegate = my_function;
            
            // Note the above statement is a simpler and equivalent to the following. 
            Delegate_Definition oldwaydelegate = new Delegate_Definition(my_function);
        }
    }
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 *