新手问一个 Golang Go语言中实现并发素数筛的问题

• https://go.dev/play/p/CJSIHL3ycKG

func Filter(in <-chan int, out chan<- int, prime int) {
	for {
		i := <-in
		if i%prime != 0 {
			out <- i
		}
	}
}
func Generate(ch chan<- int) {
for i := 2; ; i++ {
ch <- i
}
}
func main() {
ch := make(chan int)
go Generate(ch)
// print the first 10 prime numbers
for i := 0; i < 10; i++ {
prime := <-ch
println("next prime = ", prime)
ch1 := make(chan int)
go Filter(ch, ch1, prime)
ch = ch1
}
}

• https://go.dev/play/p/q0NdUVMjArc

func Filter(in <-chan int, out chan<- int, prime int) {
	for {
		i := <-in
		if i%prime != 0 {
			out <- i
		}
	}
}
func main() {
ch := make(chan int)
go func() {
for i := 2; ; i++ {
ch <- i
}
}()
for i := 0; i &lt; 10; i++ {
	prime := &lt;-ch
	println("next prime = ", prime)
	ch1 := make(chan int)
	go Filter(ch, ch1, prime)
	ch = ch1
}
}

运行后发现上面的代码可以实现并发素数筛的功能, 但是下面的闭包写法就不行, 有没有大佬解释一下?