我不明白"ch=ch1“的意思,为什么它可以打印质数?有人能给我解释一下吗?我正在学习Go。
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.package main
package main
import "fmt"
// Send the sequence 2, 3, 4, ... to channel 'ch'.
func generate(ch chan int) {
for i := 2; ; i++ {
ch <- i // Send 'i' to channel 'ch'.
}
}
// Copy the values from channel 'in' to channel 'out',
// removing those divisible by 'prime'.
func filter(in, out chan int, prime int) {
for {
i := <-in // Receive value of new variable 'i' from 'in'.
if i%prime != 0 {
out <- i // Send 'i' to channel 'out'.
}
}
}
// The prime sieve: Daisy-chain filter processes together.
func main() {
ch := make(chan int) // Create a new channel.
go generate(ch) // Start generate() as a goroutine.
for {
prime := <-ch
fmt.Print(prime, " ")
ch1 := make(chan int)
go filter(ch, ch1, prime)
ch = ch1
}
}有人能给我解释一下这些代码吗?我已经学了好几天了。
发布于 2019-05-20 18:23:33
ch是当前频道。循环如下:
从
ch1,它是所有不能被2.=整除的整数的通道,ch = ch1,您可以告知当前通道是所有整数的通道,且不能被2整除。ch1创建为当前通道,但没有可被3整除的数字。ch1指定为当前通道。因此,现在当前通道是所有数字的通道,不能被2整除,也不能被3.整除
https://stackoverflow.com/questions/56218409
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