F# пример объединения ООП и ФП при разработке программы

module Person =

type PersonId = PersonId of int
type PersonName = PersonName of string
type Person = { Id : PersonId; Name : PersonName }

let create (id, name) = {Id = id; Name = name}
let getName person = 
     let (PersonName name) = person.Name
     name
    
let getId person =
    let (PersonId id) = person.Id
    id

let show person = 
    printfn "[id = %d; name = %s]" (getId person) (getName person)

type Person with
    static member Create (id, name) = create (PersonId id, PersonName name)   
    member it.Show() = show it

let p = Person.Create (1, "Вася")   

p.Show()