package ppx_csv_conv
Install
Dune Dependency
Authors
Maintainers
Sources
sha256=ab4058a7f67c6ec7f7ddcd40d36530812b27947341912c7d3497e0343c1f962b
md5=32663f1561cf99bc49bf3e71ec271a92
README.md.html
ppx_csv_conv
Generate functions to read/write records in csv format.
ppx_csv_conv
generates functions to output some records as a csv file, and read the records back from a list of strings coming from a csv file or a database query.
Usage
Annotate the type: [@@deriving fields, csv]
type t = {
field : ...
....
} [@@deriving fields, csv]
Csv uses fields so fields is also required. Now the functions listed in Csvfields.Csv.Csvable
are included in the module, including conversion to and from string lists, dumping to files, and loading files.
The Csvfields.Csv
module provides the Atom
functor, which accepts a Stringable module to produce the necessary functions for recursive calls:
module Date = struct
include Date
include (Csvfields.Csv.Atom (Date) : Csvfields.Csv.Csvable with type t := t)
end
type t = {
a : float;
b : string;
c : int;
e : Date.t;
} [@@deriving fields, csv]
Generate code/functions with types:
include (Csvfields.Csv.Csvable with type t := t)
(Known) limitations:
No
option
,ref
, orlazy_t
types allowed.No variant types ... nothing other than primitive types and records. You should create your own stringable version of those types and use the
Atom
functor.The name of the type must be
t
.