019f8fd211
git-subtree-dir: users/wpcarro git-subtree-mainline:464bbcb15cgit-subtree-split:24f5a642afChange-Id: I6105b3762b79126b3488359c95978cadb3efa789
45 lines
780 B
Go
45 lines
780 B
Go
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)
|
|
}
|