Learn go language 0x06: Fibonacci closure exercise code in go language journey

* subject

https://tour.go-zh.org/moretypes/26
practice ： Fibonacci closure
Achieve one fibonacci function , It returns a function （ Closure ）, The closure returns a Fibonacci sequence (0, 1, 1, 2, 3, 5, ...).

* Code

package main

import "fmt"

//  Return to one “ return int Function of ”
func fibonacci() func() int {
    
	a := 0
	b := 1
	return func() int {
    
		ret := a
		a = b
		b = b + ret
		return ret
	}
}

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

Output ：

0
1
1
2
3
5
8
13
21
34

Make minor changes to the code , as follows ：

package main

import "fmt"

//  Return to one “ return int Function of ”
func fibonacci() func() int {
    
	a := 0
	b := 1
	return func() int {
    
		ret := a
		a, b = b, a + b	//  Changed here , Updates to the two variables are written on one line 
		return ret
	}
}

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