Given the following code:
package main
import (
"fmt"
"math/rand"
"time"
)
func main() {
for i := 0; i < 3; i++ {
go f(i)
}
// prevent main from exiting immediately
var input string
fmt.Scanln(&input)
}
func f(n int) {
for i := 0; i < 10; i++ {
dowork(n, i)
amt := time.Duration(rand.Intn(250))
time.Sleep(time.Millisecond * amt)
}
}
func dowork(goroutine, loopindex int) {
// simulate work
time.Sleep(time.Second * time.Duration(5))
fmt.Printf("gr[%d]: i=%d
", goroutine, loopindex)
}
Can i assume that the 'dowork' function will be executed in parallel?
Is this a correct way of achieving parallelism or is it better to use channels and separate 'dowork' workers for each goroutine?