How create a generic Func delegate

Question

I have this method

    public static T F<T>(T arg)
    {
        return arg;
    }

and I want to create a Func delegate to F. I try this

public Func<T, T> FuncF = F;

but it's not syntactically correct. How I can do that.

Answer 1

Only classes and methods can be generic in and of themselves. A field that uses generic parameters must be within a generic class context:

public class Test<T>
{
    public static T F(T arg)
    {
        return arg;
    }

    public Func<T, T> FuncF = F;
}

Or if the type parameter for F should not be connected to FuncF, then just use a different name for one of the parameters:

public class Test<T>
{
    public static U F<U>(U arg)
    {
        return arg;
    }

    public Func<T, T> FuncF = F;
}