session.go

func (iter *Iter) All(result interface{}) error {
	resultv := reflect.ValueOf(result)
	if resultv.Kind() != reflect.Ptr || (resultv.Elem().Kind() != reflect.Slice && resultv.Elem().Kind() != reflect.Interface) {
		panic("result argument must be a slice address")
	}
	slicev := resultv.Elem()

	if resultv.Elem().Kind() == reflect.Interface {
		slicev = slicev.Elem().Slice(0, slicev.Elem().Cap())
	} else {
		slicev = slicev.Slice(0, slicev.Elem().Cap())
	}

	elemt := slicev.Type().Elem()
	i := 0
	for {
		if slicev.Len() == i {
			elemp := reflect.New(elemt)
			if !iter.Next(elemp.Interface()) {
				break
			}
			slicev = reflect.Append(slicev, elemp.Elem())
			slicev = slicev.Slice(0, slicev.Cap())
		} else {
			if !iter.Next(slicev.Index(i).Addr().Interface()) {
				break
			}
		}
		i++
	}
	resultv.Elem().Set(slicev.Slice(0, i))
	return iter.Close()
}