channel-cast.go

package main

import "fmt"

func main() {

  	// read and write
	ch1 := make(chan int)
	fmt.Printf("ch1=%t\n", ch1)

	// read only
	ch2 := (<-chan int)(ch1)
	fmt.Printf("ch2=%t\n", ch2)

	// send only
	ch3 := (chan<- int)(ch1)
	fmt.Printf("ch3=%t\n", ch3)
}