View source for Keyword arguments

"We show the Haskell implementation of keyword arguments, which goes
well beyond records (e.g., in permitting the re-use of labels). Keyword
arguments indeed look just like regular, positional arguments. However,
keyword arguments may appear in any order.  Furthermore, one may
associate defaults with some keywords; the corresponding arguments may
then be omitted. It is a type error to omit a required keyword argument.
The latter property is in stark contrast with the conventional way of
emulating keyword arguments via records."

[http://okmij.org/ftp/Haskell/types.html#keyword-args Genuine keyword arguments]

[[Category:Idioms]]