var _curry3 = require('./internal/_curry3');
var _reduce = require('./internal/_reduce');


/**
 * Returns a single item by iterating through the list, successively calling the iterator
 * function and passing it an accumulator value and the current value from the array, and
 * then passing the result to the next call.
 *
 * The iterator function receives two values: *(acc, value)*.  It may use `R.reduced` to
 * shortcut the iteration.
 *
 * Note: `R.reduce` does not skip deleted or unassigned indices (sparse arrays), unlike
 * the native `Array.prototype.reduce` method. For more details on this behavior, see:
 * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce#Description
 * @see R.reduced
 *
 * @func
 * @memberOf R
 * @category List
 * @sig (a,b -> a) -> a -> [b] -> a
 * @param {Function} fn The iterator function. Receives two values, the accumulator and the
 *        current element from the array.
 * @param {*} acc The accumulator value.
 * @param {Array} list The list to iterate over.
 * @return {*} The final, accumulated value.
 * @example
 *
 *      var numbers = [1, 2, 3];
 *      var add = function(a, b) {
 *        return a + b;
 *      };
 *
 *      R.reduce(add, 10, numbers); //=> 16
 */
module.exports = _curry3(_reduce);