Operator as and generic classes

Question

I\'m writing .NET On-the-Fly compiler for CLR scripting and want execution method make generic acceptable:

object Execute()
{
  return type.InvokeMember(..);         


        

Answer 1

It seems like you are just adding a wrapper method for casting to the type the user wants, thus only adding overhead to the execution. For the user, writing

int result = Execute();

isn't much different from

int result = (int)Execute();

You can use the out modifier to write the result into a variable in the caller's scope, and return a boolean flag to tell whether it succeeded:

bool Execute(out T result) where T : class
{
    result = Execute() as T;
    return result != null;
}