remove number for source

src/concurrent-goroutines/concurrent-goroutines.go

@@ -0,0 +1,27 @@
+// ## Concurrent Goroutines
+
+package main
+
+import "time"
+import "math/rand"
+import "fmt"
+
+func f(n int) {
+    for i := 0; i < 10; i++ {
+        fmt.Println(n, ":", i)
+        breakTime := time.Duration(rand.Intn(150))
+        time.Sleep(time.Millisecond * breakTime)
+    }
+}
+
+func main() {
+    for i := 0; i < 5; i++ {
+        f(i)
+    }
+    fmt.Println()
+    for i := 0; i < 5; i++ {
+        go f(i)
+    }
+    var input string
+    fmt.Scanln(&input)
+}