Difference between revisions of "Keyword arguments"
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| + | "We show the Haskell implementation of keyword arguments, which goes |
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| + | well beyond records (e.g., in permitting the re-use of labels). Keyword |
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| + | arguments indeed look just like regular, positional arguments. However, |
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| + | keyword arguments may appear in any order. Furthermore, one may |
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| + | associate defaults with some keywords; the corresponding arguments may |
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| + | then be omitted. It is a type error to omit a required keyword argument. |
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| + | The latter property is in stark contrast with the conventional way of |
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| + | emulating keyword arguments via records." |
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| + | |||
| + | [http://okmij.org/ftp/Haskell/types.html#keyword-args Genuine keyword arguments] |
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| + | [[Category:Idioms]] |
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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."