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README.md.html
Delimited
This library contains parsers & generators for CSVs (and CSV-like delimited
formats). It additionally contains some non-csv format parsers.
Reading CSVs
The Delimited.Read
module contains two mechanisms for reading CSVs:
The applicative interface. This interface has a small learning curve but
produces clean, composable and type-safe parsers for the'a
of your choice.Using the pre-built
Row
object & requesting headers/indices directly. This
is a more obvious interface but provides little protection against programmer
error.
In new code you should favour the applicative interface (it's likeCommand.Param
). See the example under example/
or ask a delimited dev for
help if you're not familiar.
Writing CSVs
The Delimited.Write
module contains two mechanisms for writing CSVs:
The main interface. Like the applicative interface for reading CSVs, this
protects fairly well against programmer error and provides clean, composable
and type-safe CSV generators for the'a
of your choice.The row-based interface takes string lists and formats them as CSVs. There
are no checks that you have the correct number or order of columns.
New code should prefer the builder interface. There's an example underexample/
or you can ask a delimited dev for help.
(Technical note: the main writer interface is not an applicative functor.)
Non-CSV parsers
There are two non-csv formats supported for parsing:
Non_csv.character_separated_without_quoting
: like CSVs but no field may
contain newlines or the delimiter character as there is no quotingNon_csv.Positional
: parses fixed-width fields