···238238 setting of the default value (e.g. 0 and [null] for an integer would be
239239 indistinguishable).
240240241241- To accept null for primitive fields, explicitly use {!Jsont.option}:
241241+ To accept null for primitive fields, explicitly use {!val:Jsont.option}:
242242 {[
243243 (* Accepts null, decodes as None *)
244244 Jsont.Object.mem "count" (Jsont.option Jsont.int) ~dec_absent:None