type person = {Name: string; Age: int} with // Defines person record
member this.print() =
printfn "%s, %i" this.Name this.Age
let user = {Name = "John Doe"; Age = 27} // creates a new person
user.print() // John Doe, 27
type person = {Name: string; Age: int} // Defines person record
let user1 = {Name = "John Doe"; Age = 27} // creates a new person
let user2 = {user1 with Age = 28} // creates a copy, with different Age
let user3 = {user1 with Name = "Jane Doe"; Age = 29} //creates ...
