for v := range ch {
    // do something with v
}

//read channel until it closes or error-condition
for {
    if input, open := <-ch; !open {
        break
    }
    fmt.Printf("%s", input)
}

ch := make(chan int) // Allocate a channel.
// Start something in a goroutine; when it completes, signal on the channel.
go func() {
    // doSomething
    ch <- 1 // Send a signal; value does not matter.
}()
doSomethingElseForAWhile()
<-ch // Wait for goroutine to finish; discard sent value.

func pump() chan int {
    ch := make(chan int)
    go func() {
        for i := 0; ; i++ {
            ch <- i
        }
    }()
    return ch
}

timeout := make(chan bool, 1)
go func() {
    time.Sleep(1e9) // one second  
    timeout <- true
}()
select {
    case <-ch:
    // a read from ch has occurred
    case <-timeout:
    // the read from ch has timed out
}

func Worker(in, out chan *Task) {
    for {
        t := <-in
        process(t)
        out <- t
    }
}