Method cross

index/regexp.go:838–847

cross returns the cross product of s and t.

(t stringSet, isSuffix bool)

// cross returns the cross product of s and t.
func (s stringSet) cross(t stringSet, isSuffix bool) stringSet {
	p := stringSet{}
	for _, ss := range s {
		for _, tt := range t {
			p.add(ss + tt)
		}
	}
	p.clean(isSuffix)
	return p
}

// clear empties the set but preserves the storage.
func (s *stringSet) clear() {