GO : 斐波纳契数列

 package main

 import "fmt"

 // fibonacci is a function that returns
 // a function that returns an int.
 func fibonacci() func() int {
     pre :=
     cur :=
     return func() int {
         if pre ==  && cur ==  {
             pre =
         } else {
             temp := cur
             cur += pre
             pre = temp
         }

         return cur
     }
 }

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