10 examples of 'jquery reduce' in JavaScript

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return function reduce( acc, data ) {
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	var i, j, A, B;
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	// [0] Increment the number of values:
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	acc.N += 1;
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	// [1] Compute the deltas where a delta is the difference between a new value and the corresponding dataset's current mean value...
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	for ( i = 0; i < numMeans; i++ ) {
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		accessor = accessors[ names[ i ] ];
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		deltas[ i ] = accessor( data ) - acc.means[ i ];
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	}
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	// [2] Update the covariance matrix...
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	for ( i = 0; i < numMeans; i++ ) {
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		for ( j = 0; j < numMeans; j++ ) {
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			A = acc.cov[i][j] * (acc.N-1);
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			B = (acc.N-1) / acc.N * deltas[i] * deltas[j];
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			acc.cov[i][j] = ( A + B ) / acc.N;
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		}
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	}
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	// [3] Update the means to incorporate the new values...
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	for ( i = 0; i < numMeans; i++ ) {
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		acc.means[ i ] += deltas[ i ] / acc.N;
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	}
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	return acc;
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}; // end FUNCTION reduce()

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function reduce(array, reducer, index) {
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  return array.reduce(function(prev, current) {
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    return reducer(prev, current[index]);
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  }, array[0][index]);
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}

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function reduce(arr, fn){
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  var res = arr[0];
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  for(var i=1,l=arr.length;i

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function reduce ( arr, fun, base ) {
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  return Array.prototype.reduce.call( arr, fun, base );
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}

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function reduceArr (arr, fn, baseObject = {}) {
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  return arr.reduce((acc, item) => {
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    const [k, v] = fn(item, acc)
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    acc[k] = v
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    return acc
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  }, baseObject)
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}

1
function reduce(func, arr, memo) {
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	var len = arr.length,
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		i = 0,
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		accum = memo;
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	for (; i < len; i++) {
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		accum = func(accum, arr[i]);
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	}
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	return accum;
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}

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function reduce ( f, acc, iterable ) {
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    if ( !isDefined( iterable ) ) return acc;
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    return isArray( iterable ) 
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        ? reduceArray( f, acc, iterable ) 
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        : reduceObject( f, acc, iterable );
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}

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var reduce = function reduce(obj, index) {
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  if (!obj) {
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    return null;
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  }
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  return obj[index];
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};

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export function reduce(obj, func, value) {
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  for (const i in obj) {
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    value = func(value, obj[i], i);
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  }
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  return value;
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}

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function reduce() {
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	var delta = 0,
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		delta_n = 0,
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		term1 = 0;
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	/**
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	* FUNCTION: reduce( acc, data )
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	*	Defines the data reduction.
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	*
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	* @private
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	* @param {object} acc - accumulation object containing the following properties: N, mean, M1, M2, M3. 'N' is the observatio number. 'mean' is the mean accumulator. 'M1' is the difference accumulator. 'M2' is the sum of squared difference accumulator. 'M3' is the cubed difference accumulator.
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	* @param {number} data - numeric stream data
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	* @returns {object} accumulation object
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	*/
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	return function reduce( acc, x ) {
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		acc.N += 1;
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		delta = x - acc.mean;
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		delta_n = delta / acc.N;
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		term1 = delta * delta_n * (acc.N-1);
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		acc.M3 += term1*delta_n*(acc.N-2) - 3*delta_n*acc.M2;
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		acc.M2 += term1;
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		acc.M1 += delta;
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		acc.mean += delta_n;
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		return acc;
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	};
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} // end FUNCTION reduce()