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35 lines
991 B
JavaScript
35 lines
991 B
JavaScript
6 years ago
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var baseExtremum = require('./_baseExtremum'),
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baseGt = require('./_baseGt'),
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baseIteratee = require('./_baseIteratee');
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/**
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* This method is like `_.max` except that it accepts `iteratee` which is
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* invoked for each element in `array` to generate the criterion by which
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* the value is ranked. The iteratee is invoked with one argument: (value).
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*
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* @static
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* @memberOf _
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* @since 4.0.0
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* @category Math
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* @param {Array} array The array to iterate over.
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* @param {Function} [iteratee=_.identity] The iteratee invoked per element.
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* @returns {*} Returns the maximum value.
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* @example
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*
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* var objects = [{ 'n': 1 }, { 'n': 2 }];
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*
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* _.maxBy(objects, function(o) { return o.n; });
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* // => { 'n': 2 }
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*
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* // The `_.property` iteratee shorthand.
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* _.maxBy(objects, 'n');
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* // => { 'n': 2 }
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*/
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function maxBy(array, iteratee) {
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return (array && array.length)
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? baseExtremum(array, baseIteratee(iteratee, 2), baseGt)
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: undefined;
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}
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module.exports = maxBy;
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