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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; | |