wang kai questions

• Is there some way to get a value's type like c# or java's reflection in OCaml?
• What's different between "250-AUTH LOGIN PLAIN" and "250-AUTH=LOGIN PLAIN"?
• What's use of cmt file in ocaml?
• How to avoid writing regex match twice?
• Which JDBC driver version should I use to access PostgreSQL 9.5?
• How to get value from Either?
• Can I use regex expression in c# with switch case?
• What play's Action really is?

wang kai answers