A Tour of Go - Exercise: Fibonacci closure

exercise-fibonacci-closure.go

// https://tour.golang.org/moretypes/26
package main

import "fmt"

// fibonacci is a function that returns
// a function that returns an int.
func fibonacci() func() int {
    a, b := 1, 0
    return func() int {
        a, b = b, a+b
        return a
    }
}

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