Function unionWith

This method is like union except that it accepts comparator which is invoked to compare elements of arrays. Result values are chosen from the first array in which the value occurs. The comparator is invoked with two arguments: (arrVal, othVal).

Since

5.13.0

See

[[difference]], [[union]], [[unionBy]], [[without]], [[xor]], [[xorBy]]

Example

const objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]
const others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }]

unionWith(objects, others, isEqual)
// => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]
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