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on this file was d24f17c, checked in by Aleksandar Panovski <apano77@…>, 15 months ago |
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[d24f17c] | 1 | var _curry2 =
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| 2 | /*#__PURE__*/
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| 3 | require("./internal/_curry2.js");
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| 4 |
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| 5 | var _isArray =
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| 6 | /*#__PURE__*/
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| 7 | require("./internal/_isArray.js");
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| 8 |
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| 9 | var equals =
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| 10 | /*#__PURE__*/
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| 11 | require("./equals.js");
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| 12 | /**
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| 13 | * Returns the position of the last occurrence of an item in an array, or -1 if
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| 14 | * the item is not included in the array. [`R.equals`](#equals) is used to
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| 15 | * determine equality.
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| 16 | *
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| 17 | * @func
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| 18 | * @memberOf R
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| 19 | * @since v0.1.0
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| 20 | * @category List
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| 21 | * @sig a -> [a] -> Number
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| 22 | * @param {*} target The item to find.
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| 23 | * @param {Array} xs The array to search in.
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| 24 | * @return {Number} the index of the target, or -1 if the target is not found.
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| 25 | * @see R.indexOf, R.findLastIndex
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| 26 | * @example
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| 27 | *
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| 28 | * R.lastIndexOf(3, [-1,3,3,0,1,2,3,4]); //=> 6
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| 29 | * R.lastIndexOf(10, [1,2,3,4]); //=> -1
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| 30 | */
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| 31 |
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| 32 |
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| 33 | var lastIndexOf =
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| 34 | /*#__PURE__*/
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| 35 | _curry2(function lastIndexOf(target, xs) {
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| 36 | if (typeof xs.lastIndexOf === 'function' && !_isArray(xs)) {
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| 37 | return xs.lastIndexOf(target);
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| 38 | } else {
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| 39 | var idx = xs.length - 1;
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| 40 |
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| 41 | while (idx >= 0) {
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| 42 | if (equals(xs[idx], target)) {
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| 43 | return idx;
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| 44 | }
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| 45 |
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| 46 | idx -= 1;
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| 47 | }
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| 48 |
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| 49 | return -1;
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| 50 | }
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| 51 | });
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| 52 |
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| 53 | module.exports = lastIndexOf; |
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