func (s *SDayCollect) Init(startdate epochdate.Date, enddate epochdate.Date) {
if !s.isinit {
panic("Not in init mode")
}
if enddate.Before(startdate) {
panic("Startdate must be before enddate")
}
filldate := startdate
for filldate.Before(enddate + 1) {
s.EmptyDay(filldate)
filldate += 1
}
s.isinit = false
}
