Create a Func<> with Roslyn

Question

Inspired by this and this article, I\'m trying to create a dynamic function with Roslyn.

However the mentioned sources are outdated or not complete and I\'m not able

Answer 1

Disclaimer: I haven't actually used Roslyn in anger much at all.

Currently your code declares a variable, but doesn't do anything with it afterwards. Based on this random blog post, it looks like you possibly just need an extra expression after the declaration:

var code = @"Func<int, int> doStuffToInt = i =>
{
   var result = i;
   for (var y = i; y <= i * 2; y++)
   {
      result += y;
   }
   return result;
};
doStuffToInt"; // This is effectively the return statement for the script...

I don't guarantee it'll work, but give it a try :)