Read (b0.B000.Op.Read)

type t

val v_op : 
  id:id ->
  mark:mark ->
  created:B0_std.Mtime.span ->
  ?post_exec:(op -> unit) ->
  ?k:(op -> unit) ->
  B0_std.Fpath.t ->
  op

val v : file:B0_std.Fpath.t -> data:string -> t

val get : op -> t

val file : t -> B0_std.Fpath.t

val data : t -> string

val set_data : t -> string -> unit

val discard_data : t -> unit