How to improve Julia (in 2.0 taking from [research] languages): E.g. 2nd class functions

[mbauman]

Let’s keep the discussion on effects centralized in

Are there any plans for Julia to adopt an effects system?

It seems that industry programming languages such as Rust or Scala are studying the implementation of an effects system. Is there any Julep about it? For reference: Rust: Extending Rust's Effect System Scala: CanThrow Capabilities