Difference returns a new RangeSet with regions in a that are absent from b.

Intersection returns a new RangeSet with intersecting regions from a and b.

New returns a new RangeSet.

Union returns a new RangeSet with the union of regions from a and b.

Range is 0-based half-open.

RangeSet acts like a bitvector where the interval values for true can be extracted.