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34 lines
1.1 KiB
TypeScript
34 lines
1.1 KiB
TypeScript
// Loaded from https://deno.land/x/ramda@v0.27.2/source/insertAll.js
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import _curry3 from './internal/_curry3.js';
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/**
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* Inserts the sub-list into the list, at the specified `index`. _Note that this is not
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* destructive_: it returns a copy of the list with the changes.
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* <small>No lists have been harmed in the application of this function.</small>
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*
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* @func
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* @memberOf R
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* @since v0.9.0
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* @category List
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* @sig Number -> [a] -> [a] -> [a]
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* @param {Number} index The position to insert the sub-list
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* @param {Array} elts The sub-list to insert into the Array
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* @param {Array} list The list to insert the sub-list into
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* @return {Array} A new Array with `elts` inserted starting at `index`.
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* @example
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*
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* R.insertAll(2, ['x','y','z'], [1,2,3,4]); //=> [1,2,'x','y','z',3,4]
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*/
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var insertAll = _curry3(function insertAll(idx, elts, list) {
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idx = idx < list.length && idx >= 0 ? idx : list.length;
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return [].concat(
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Array.prototype.slice.call(list, 0, idx),
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elts,
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Array.prototype.slice.call(list, idx)
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);
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});
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export default insertAll;
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