Module Delimited.Write

Write CSVs & CSV-like delimited formats.

type -'a t

Used to describe a way to create a single row of a CSV from a given type.

val empty : 'a t
val column : ('a -> string) -> header:string -> 'a t
val column_m : (module Core_kernel.Stringable.S with type t = 'a) -> header:string -> 'a t
val column_m_opt : ?⁠default:string -> (module Core_kernel.Stringable.S with type t = 'a) -> header:string -> 'a option t

default is printed in place of None, and if not supplied is the empty string.

val of_list : 'a t list -> 'a t
val append : 'a t -> 'a t -> 'a t
val contra_map : 'b t -> f:('a -> 'b) -> 'a t
val map_headers : 'a t -> f:(string -> string) -> 'a t
val headers : 'a t -> string list
val to_columns : 'a t -> 'a -> string list
module Fields_O = Delimited_kernel.Write.Fields_O

Open for prefix operators useful for using with Fields.to_list.

val of_writer : ?⁠sep:char -> ?⁠line_breaks:[ `Unix | `Windows ] -> write_header:bool -> 'a t -> Async.Writer.t -> 'a Async.Pipe.Writer.t

Make a pipe writer for 'as from a writer. The 'as will be written out as CSVs.

The writer will be closed when the pipe closes.

val create_writer : ?⁠sep:char -> ?⁠line_breaks:[ `Unix | `Windows ] -> write_header:bool -> 'a t -> string -> 'a Async.Pipe.Writer.t

Make a pipe writer for 'as from a filename. The 'as will be written out as CSVs.

The writer will be closed when the pipe closes.

module By_row : sig ... end