Hi All,
I am trying to print the contents of a file randomizing the lines.
The following code works, but does not exit even after all the lines are
read.
What needs to be done to correct it?
package main
import(
"fmt"
"bufio"
"os"
"math/rand"
"time"
)
func main() {
filename := os.Args[1]
if filename == "" {
panic("No filename")
}
fh,err := os.Open(filename)
if err != nil {
panic(err)
}
scanner := bufio.NewScanner(fh)
c := make(chan string)
for scanner.Scan() {
line := scanner.Text()
err := scanner.Err()
if err != nil {
close(c)
}
go func(l string){
time.Sleep(time.Duration(rand.Intn(30)) * time.Millisecond)
c <- l
}(line)
}
for {
select {
case myline := <- c:
fmt.Println(myline)
default:
break
}
}
}
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