491   function arrayAggregator(array, setter, iteratee, accumulator) {  argument
497       setter(accumulator, value, iteratee(value), array);
499     return accumulator;
675   function arrayReduce(array, iteratee, accumulator, initAccum) {  argument
680       accumulator = array[++index];
683       accumulator = iteratee(accumulator, array[index], index, array);
685     return accumulator;
700   function arrayReduceRight(array, iteratee, accumulator, initAccum) {  argument
703       accumulator = array[--length];
706       accumulator = iteratee(accumulator, array[length], length, array);
708     return accumulator;
910   function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) {  argument
912       accumulator = initAccum
914         : iteratee(accumulator, value, index, collection);
916     return accumulator;
2508     function baseAggregator(collection, setter, iteratee, accumulator) {  argument
2510         setter(accumulator, value, iteratee(value), collection);
2512       return accumulator;
3196     function baseInverter(object, setter, iteratee, accumulator) {  argument
3198         setter(accumulator, iteratee(value), key, object);
3200       return accumulator;
4821             accumulator = initializer ? initializer() : {};
4823         return func(collection, setter, getIteratee(iteratee, 2), accumulator);
9677     function reduce(collection, iteratee, accumulator) {
9681       return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEach);
9706     function reduceRight(collection, iteratee, accumulator) {
9710       return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEachRight);
13788     function transform(object, iteratee, accumulator) {
13793       if (accumulator == null) {
13796           accumulator = isArr ? new Ctor : [];
13799           accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {};
13802           accumulator = {};
13806         return iteratee(accumulator, value, index, object);
13808       return accumulator;