Function getUnion

Represents a union set operation, where the union is the elements from both set A and set B.

• Formal definition: A ∪ B = {x: x ∈ A | x ∈ B}
• This method runs in linear time, or O(n * m), where n = |B| (size of set B).
• This method has no side effects, returning a new Set<TElement> instance.

See

Set.prototype.union

Example

// {A, B, C} ∪ {E, F, G} = {A, B, C, D, E, F, G}
getUnion(new Set(['A', 'B', 'C']), new Set(['E', 'F', 'G'])); // new Set(['A', 'B', 'C', 'E', 'F', 'G'])
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