[east2west]

I don't miss OOP in Julia but I do feel there need to be more ways to abstract things than multiple dispatch and structs. One thing I do miss is interfaces, which can group functions for a common purpose. I understand it may be not feasible in a dynamic language, but hopefully there will be something above functions as an abstraction mechanism.

[freemint]

Interfaces are not currently defined in the language but socially if you are lucky the package whose abstract type you subtype has a generic test you can call with your new implementation but that is not the standard.