func (c *compositeConsumer) Consume(s functional.Stream) {
consumers := make([]functional.Consumer, len(c.consumers))
for i := range consumers {
consumers[i] = c.consumers[i]
}
c.closeError = functional.MultiConsume(s, c.ptr, c.copier, consumers...)
}
func main() {
conn, err := sqlite.Open("chkbook.db")
if err != nil {
fmt.Println("Error opening file")
return
}
s, err := ChkbkEntries(conn, 1)
if err != nil {
fmt.Printf("Error reading ledger %v", err)
}
expenseTotaler := &Totaler{}
incomeTotaler := &Totaler{Income: true}
printer := Printer{}
err = functional.MultiConsume(s, new(Entry), nil, printer, expenseTotaler, incomeTotaler)
if err != nil {
fmt.Printf("Encountered error closing stream: %v", err)
}
fmt.Printf("Total income: %d\n", incomeTotaler.Total)
fmt.Printf("Total expenses: %d\n", expenseTotaler.Total)
}