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lib.lists: add replicate
`replicate` returns n copies of an element as a list. Co-Authored-By: Silvan Mosberger <contact@infinisil.com>
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@ -87,7 +87,7 @@ let
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updateManyAttrsByPath;
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inherit (self.lists) singleton forEach foldr fold foldl foldl' imap0 imap1
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concatMap flatten remove findSingle findFirst any all count
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optional optionals toList range partition zipListsWith zipLists
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optional optionals toList range replicate partition zipListsWith zipLists
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reverseList listDfs toposort sort naturalSort compareLists take
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drop sublist last init crossLists unique intersectLists
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subtractLists mutuallyExclusive groupBy groupBy';
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@ -303,6 +303,18 @@ rec {
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else
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genList (n: first + n) (last - first + 1);
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/* Return a list with `n` copies of an element.
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Type: replicate :: int -> a -> [a]
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Example:
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replicate 3 "a"
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=> [ "a" "a" "a" ]
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replicate 2 true
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=> [ true true ]
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*/
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replicate = n: elem: genList (_: elem) n;
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/* Splits the elements of a list in two lists, `right` and
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`wrong`, depending on the evaluation of a predicate.
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@ -459,6 +459,11 @@ runTests {
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expected = [2 30 40 42];
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};
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testReplicate = {
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expr = replicate 3 "a";
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expected = ["a" "a" "a"];
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};
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testToIntShouldConvertStringToInt = {
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expr = toInt "27";
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expected = 27;
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