module Contact:sig
..end
type
contact = {
|
phone_number : |
|
first_name : |
|
last_name : |
|
user_id : |
val create : phone_number:string ->
first_name:string ->
?last_name:string option ->
?user_id:int option -> unit -> contact
contact
in a concise manner
Read a contact
out of some JSON
val read : Yojson.Safe.json -> contact
module Out:sig
..end