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| 1 | import { addIndex, map } from 'ramda';
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| 2 |
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| 3 | /**
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| 4 | * {@link http://ramdajs.com/docs/#map|R.map} function that more closely resembles Array.prototype.map.
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| 5 | * It takes two new parameters to its callback function: the current index, and the entire list.
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| 6 | *
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| 7 | * `mapIndexed` implementation is simple : `
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| 8 | * const mapIndexed = R.addIndex(R.map);
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| 9 | * `
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| 10 | * @func mapIndexed
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| 11 | * @memberOf RA
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| 12 | * @since {@link https://char0n.github.io/ramda-adjunct/2.5.0|v2.5.0}
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| 13 | * @category List
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| 14 | * @typedef Idx = Number
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| 15 | * @sig Functor f => ((a, Idx, f a) => b) => f a -> f b
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| 16 | * @param {Function} fn The function to be called on every element of the input `list`
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| 17 | * @param {Array} list The list to be iterated over
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| 18 | * @return {Array} The new list
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| 19 | * @see {@link http://ramdajs.com/docs/#addIndex|R.addIndex}, {@link http://ramdajs.com/docs/#map|R.map}
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| 20 | * @example
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| 21 | *
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| 22 | * RA.mapIndexed((val, idx, list) => idx + '-' + val, ['f', 'o', 'o', 'b', 'a', 'r']);
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| 23 | * //=> ['0-f', '1-o', '2-o', '3-b', '4-a', '5-r']
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| 24 | */
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| 25 | const mapIndexed = addIndex(map);
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| 26 |
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| 27 | export default mapIndexed;
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