tour.golang.org solutions

tour.go

/ ***********************************************************/
/ * Exercise: Fibonacci closure, http://tour.golang.org/#44 */
/ ***********************************************************/

package main

import "fmt"

func fibonacci() func() int {
    x, y := 0, 1
	return func() int {
		x,y = y,x+y
        if x == 1 && y == 1 {
            return 0
        }
		return x
	}
}

func main() {
    f := fibonacci2()
    for i := 0; i < 10; i++ {
        fmt.Println(f())
    }
}