F# and duck-typing

Question

Let\'s say I defined in F# the following two types:

type Dog = { DogName:string; Age:int }
type Cat = { CatName:string; Age:int }

I was exp

Answer 1

FSharp.Interop.Dynamic (on nuget) provides a DLR based implementation of the dynamic operator (real dynamic duck typing)

let isOld x = x?Age >= 65