func Insert(model Model) Model {
counters := model.counters[:] // Copy counters
return Model{
counters: append(counters, Counter{id: model.nextID, counter: c.Model(0)}),
nextID: model.nextID + 1,
}
}
func Init(values ...int) Model {
m := Model{nextID: ID(len(values))}
for id, value := range values {
m.counters = append(m.counters, Counter{id: ID(id), counter: c.Model(value)})
}
return m
}