Keyword arguments: Difference between revisions
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"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]] | |||
Latest revision as of 15:18, 6 February 2021
"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."