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package main
import (
"bufio"
"fmt"
"os"
)
// Call function `f` in a go-routine, passing a reference to a newly created
// channel, `c`, as its only argument. Return a reference to `c` to the caller
// of `act`. When `f` halts, close the channel.
func act(f func(chan interface{})) chan interface{} {
c := make(chan interface{})
go func() {
defer close(c)
f(c)
}()
return c
}
func prompt(msg string) string {
reader := bufio.NewReader(os.Stdin)
fmt.Print(msg)
text, _ := reader.ReadString('\n')
// TODO: Trim trailing newline from the rhs of text.
return text
}
func main() {
c := act(func(c chan interface{}) {
for {
x := <-c
fmt.Printf("[A] Received value: %v\n", x)
}
})
for {
x := prompt("[B] Enter a value: ")
c <- x
}
os.Exit(0)
}
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