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20 lines
568 B
20 lines
568 B
var baseSum = require('./_baseSum'); |
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/** Used as references for various `Number` constants. */ |
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var NAN = 0 / 0; |
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/** |
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* The base implementation of `_.mean` and `_.meanBy` 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 mean. |
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*/ |
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function baseMean(array, iteratee) { |
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var length = array == null ? 0 : array.length; |
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return length ? (baseSum(array, iteratee) / length) : NAN; |
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} |
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module.exports = baseMean;
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