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Last change
on this file since d24f17c was d24f17c, checked in by Aleksandar Panovski <apano77@…>, 15 months ago |
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| [d24f17c] | 1 | import { curry, addIndex, filter, pipe, modulo, identical, nthArg, __ } from 'ramda';
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| 2 |
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| 3 | /**
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| 4 | * When given a number n and an array, returns an array containing every nth element.
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| 5 | *
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| 6 | * @func skipTake
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| 7 | * @memberOf RA
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| 8 | * @category List
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| 9 | * @since {@link https://char0n.github.io/ramda-adjunct/2.26.0|v2.26.0}
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| 10 | * @sig Number -> [a] -> [a]
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| 11 | * @param {number} the nth element to extract
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| 12 | * @param {Array} value the input array
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| 13 | * @return {Array} An array containing every nth element
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| 14 | * @example
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| 15 | *
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| 16 | * RA.skipTake(2, [1,2,3,4]) //=> [1, 3]
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| 17 | * RA.skipTake(3, R.range(0, 20)); //=> [0, 3, 6, 9, 12, 15, 18]
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| 18 | */
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| 19 |
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| 20 | var skipTake = curry(function (n, list) {
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| 21 | return addIndex(filter)(pipe(nthArg(1), modulo(__, n), identical(0)))(list);
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| 22 | });
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| 23 | export default skipTake; |
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