GitHub - MarkSFrancis/ienumerable-explained: Teaches the basics and functionality of the LINQ and IEnumerable features of .NET and C#
Example with Option with IEnumerable<string> broken - Sequence contains more than one element · Issue #377 · commandlineparser/commandline · GitHub
![c# - How to convert IEnumerable<IEnumerable<IGrouping<int,string>>> to IEnumerable<IEnumerable<string>> - Stack Overflow c# - How to convert IEnumerable<IEnumerable<IGrouping<int,string>>> to IEnumerable<IEnumerable<string>> - Stack Overflow](https://i.stack.imgur.com/Prtr3.png)