Mor A. questions

Mor A. answers

• How to make dot (composition) and dollar (application) sign for functors?
• Factory of inner class objects
• How can fmap be used with a data constructor?
• How to deal with Haskell's reserved keywords in record fields?
• What does exclamation mark mean before invoking a method in C# 8.0? [duplicate]
• Calculate expression string consists of keys in a std::map