Difference between revisions of "Keyword arguments"
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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."