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- import _curry2 from "./internal/_curry2.js";
- import _dispatchable from "./internal/_dispatchable.js";
- import _xfindLastIndex from "./internal/_xfindLastIndex.js";
- /**
- * Returns the index of the last element of the list which matches the
- * predicate, or `-1` if no element matches.
- *
- * Acts as a transducer if a transformer is given in list position.
- *
- * @func
- * @memberOf R
- * @since v0.1.1
- * @category List
- * @sig (a -> Boolean) -> [a] -> Number
- * @param {Function} fn The predicate function used to determine if the element is the
- * desired one.
- * @param {Array} list The array to consider.
- * @return {Number} The index of the element found, or `-1`.
- * @see R.transduce, R.lastIndexOf
- * @example
- *
- * const xs = [{a: 1, b: 0}, {a:1, b: 1}];
- * R.findLastIndex(R.propEq('a', 1))(xs); //=> 1
- * R.findLastIndex(R.propEq('a', 4))(xs); //=> -1
- */
- var findLastIndex =
- /*#__PURE__*/
- _curry2(
- /*#__PURE__*/
- _dispatchable([], _xfindLastIndex, function findLastIndex(fn, list) {
- var idx = list.length - 1;
- while (idx >= 0) {
- if (fn(list[idx])) {
- return idx;
- }
- idx -= 1;
- }
- return -1;
- }));
- export default findLastIndex;
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