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					25 lines
				
				600 B
			
		
		
			
		
	
	
					25 lines
				
				600 B
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											3 years ago
										 
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								/**
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								 * The base implementation of `_.sum` and `_.sumBy` without support for
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								 * iteratee shorthands.
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								 *
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								 * @private
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								 * @param {Array} array The array to iterate over.
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								 * @param {Function} iteratee The function invoked per iteration.
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								 * @returns {number} Returns the sum.
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								 */
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								function baseSum(array, iteratee) {
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								  var result,
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								      index = -1,
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								      length = array.length;
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								  while (++index < length) {
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								    var current = iteratee(array[index]);
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								    if (current !== undefined) {
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								      result = result === undefined ? current : (result + current);
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								    }
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								  }
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								  return result;
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								}
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								module.exports = baseSum;
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