Difference returns a new set which contains items which are in in the first set but not in the others.

Intersection returns a new set which contains items that only exist in all given sets.

New creates and initializes a new Set.

NewWithSize creates a new Set and gives make map a size hint.

SymmetricDifference returns a new set which s is the difference of items which are in one of either, but not in both.

Union is the merger of multiple sets.

Set is the main set structure that holds all the data and methods used to working with the set.