groupBy_.groupBy(list, iteratee, [context])
Splits a collection into sets, grouped by the result of running each value through iteratee. If iteratee is a string instead of a function, groups by the property named by iteratee on each of the values.
1 2 3 4 5 | _.groupBy([1.3, 2.1, 2.4], function(num){ return Math.floor(num); });=> {1: [1.3], 2: [2.1, 2.4]}_.groupBy(['one', 'two', 'three'], 'length');=> {3: ["one", "two"], 5: ["three"]} |
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