# Module PropList.FieldRO

    module FieldRO: sig .. end

This module defines a read-only field. However, it can only be set through `PropList.Schema.set` if the field is attached to a schema.

    val create : ?schema:('a, 'b) PropList.Schema.t ->
           ?name:PropList.name ->
           ?parse:(?context:'a -> string -> 'c) ->
           ?print:('c -> string) ->
           ?default:'c ->
           ?update:(?context:'a -> 'c -> 'c -> 'c) ->
           ?help:(unit -> string) -> 'b -> PropList.Data.t -> 'c

Create a read-only field. The returned function can be used to retrieve the value of the field.