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