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import _curry3 from './internal/_curry3';import _reduce from './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`](#reduced) to shortcut the iteration. * * The arguments' order of [`reduceRight`](#reduceRight)'s iterator function * is *(value, acc)*. * * 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 * * Dispatches to the `reduce` method of the third argument, if present. When * doing so, it is up to the user to handle the [`R.reduced`](#reduced) * shortcuting, as this is not implemented by `reduce`. * * @func * @memberOf R * @since v0.1.0 * @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. * @see R.reduced, R.addIndex, R.reduceRight * @example * *      R.reduce(R.subtract, 0, [1, 2, 3, 4]) // => ((((0 - 1) - 2) - 3) - 4) = -10 *      //          -               -10 *      //         / \              / \ *      //        -   4           -6   4 *      //       / \              / \ *      //      -   3   ==>     -3   3 *      //     / \              / \ *      //    -   2           -1   2 *      //   / \              / \ *      //  0   1            0   1 * * @symb R.reduce(f, a, [b, c, d]) = f(f(f(a, b), c), d) */var reduce = _curry3(_reduce);export default reduce;