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baseReduce.js
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define([], function() {
/**
* The base implementation of `_.reduce` and `_.reduceRight` without support
* for callback shorthands or `this` binding, which iterates over `collection`
* using the provided `eachFunc`.
*
* @private
* @param {Array|Object|string} collection The collection to iterate over.
* @param {Function} iteratee The function invoked per iteration.
* @param {*} accumulator The initial value.
* @param {boolean} initFromCollection Specify using the first or last element
* of `collection` as the initial value.
* @param {Function} eachFunc The function to iterate over `collection`.
* @returns {*} Returns the accumulated value.
*/
function baseReduce(collection, iteratee, accumulator, initFromCollection, eachFunc) {
eachFunc(collection, function(value, index, collection) {
accumulator = initFromCollection
? (initFromCollection = false, value)
: iteratee(accumulator, value, index, collection)
});
return accumulator;
}
return baseReduce;
});