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@Medeah
Created March 10, 2013 08:48
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A Tour of Go 43: Exercise: Fibonacci closure
package main
import "fmt"
// fibonacci is a function that returns
// a function that returns an int.
func fibonacci() func() int {
// we use seed values of F_−2 and F_−1
// that way the first fibonacci number returned will be F_0
a, b := -1, 1
return func() int {
next := a + b
a, b = b, next
return next
}
}
func main() {
f := fibonacci()
for i := 0; i < 10; i++ {
fmt.Println(f())
}
}
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