query.go
func (iter Enumerator) UCount(p Predicate) uint {
	tally := uint(0)
	for entry := range iter {
		if p(entry) {
			tally++
		}
	}
	return tally
}
func (iter Enumerator) UCount(p Predicate) uint {
	tally := uint(0)
	for entry := range iter {
		if p(entry) {
			tally++
		}
	}
	return tally
}
func ( iter Enumerator ) UCount ( p Predicate ) uint { tally := uint ( 0 ) for entry := range iter { if p ( entry ) { tally ++ } } return tally }
// UCount iterates over a list and keeps a running tally of the number of elements
// satisfy a predicate.
UCount iterates over a list and keeps a running tally of the number of elements satisfy a predicate .