_.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor); // => [2.1]
// The _.property iteratee shorthand. _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x'); // => [{ 'x': 1 }]
_.property