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package delimited_parsing
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The following are convenience functions that build on Record_builder.field to make it easy to define a t Delimited.Read.t for some record type t.
Example usage:
type t =
{ foo : int
; bar : bool
}
[@@deriving fields]
let read : t Delimited.Read.t =
Delimited.Read.Fields_O.(
Fields.make_creator
~foo:!!Int.of_string
~bar:!?(Option.value_map ~default:true ~f:Bool.of_string)
|> Delimited.Read.Record_builder.build_for_record)val (!!) :
(string -> 'a) ->
(_, 'a) Core.Field.t ->
('a, _, _, _) Record_builder.Make_creator_types.handle_one_fieldReads a single column from a field of a record.
val (!?) :
(string option -> 'a) ->
(_, 'a) Core.Field.t ->
('a, _, _, _) Record_builder.Make_creator_types.handle_one_fieldReads a single column from a field of a record, if the header exists.
( !? ) is to at_header_opt as ( !! ) is to at_header.