A Tour of Go 43 Exercise: Fibonacci closure
演習:fibonacci 関数を実装。
package main import "fmt" // fibonacci is a function that returns // a function that returns an int. func fibonacci() func() int { a,b := 1,1 return func() int { r := a a,b = b,a+b return r } } func main() { f := fibonacci() for i := 0; i < 10; i++ { fmt.Println(f()) } }