I journey my mock interview practice. In Nov. 2017, I came cross the issue to write C# Array.IndexOf, I was confused and did not know that I should write IndexOf as a static function of abstract class Array. I try to learn object-oriented design through C# Array class. Please give me some reasons why C# Array IndexOf is designed to be static but SetValue is public but not static. I read C# Array class source code, I could not figure out why. If the analysis can be based on C# Array class source code, that will be nice.
I learn C# using C# 2000 things starting from Sept. 20, 2017. Here is my post: https://datastructurealgorithmmockinterviewfactsandtips.quora.com/Understanding-C-Array-class
Please advice. I like to learn by myself object-oriented design by asking questions on existing C# Array abstract class.
