aaac7fed
 liuqimichale
add
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var arrayReduceRight = require('./_arrayReduceRight'),
baseEachRight = require('./_baseEachRight'),
baseIteratee = require('./_baseIteratee'),
baseReduce = require('./_baseReduce'),
isArray = require('./isArray');
/**
* This method is like `_.reduce` except that it iterates over elements of
* `collection` from right to left.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Collection
* @param {Array|Object} collection The collection to iterate over.
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
* @param {*} [accumulator] The initial value.
* @returns {*} Returns the accumulated value.
* @see _.reduce
* @example
*
* var array = [[0, 1], [2, 3], [4, 5]];
*
* _.reduceRight(array, function(flattened, other) {
* return flattened.concat(other);
* }, []);
* // => [4, 5, 2, 3, 0, 1]
*/
function reduceRight(collection, iteratee, accumulator) {
var func = isArray(collection) ? arrayReduceRight : baseReduce,
initAccum = arguments.length < 3;
return func(collection, baseIteratee(iteratee, 4), accumulator, initAccum, baseEachRight);
}
module.exports = reduceRight;
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