I’m trying to use LINQ in a C# (Polyglot Notebook). using System.Linq; Environment.GetEnvironmentVariables().Values.Select(x => x) But I’m getting the error: Error: (3,46): error CS1061: ‘ICollection’ does not contain a definition for ‘Select’ and no accessible extension method ‘Select’ accepting a first argument of type ‘ICollection’ could be found (are you missing a using directive or… Read More How to use LINQ in a .dib Polyglot notebook?