Playing with channels

gotime/src/channels.go

@@ -0,0 +1,31 @@
+package main
+
+import (
+    "fmt"
+    "time"
+    "math"
+)
+
+func sum(a []int, c chan int) {
+    sum := 0
+    for _, v := range a {
+        sum += v
+    }
+    to_sleep := time.Duration(100 * math.Abs(float64(sum))) * time.Millisecond
+    fmt.Printf("Sleeping %s...\n", to_sleep)
+    time.Sleep(to_sleep)
+    c <- sum
+}
+
+func main() {
+    a := []int{7, 2, 8, -9, 4, 0}
+
+    c := make(chan int)
+    go sum(a[:len(a)/2], c)
+    go sum(a[len(a)/2:], c)
+    x := <-c
+    fmt.Printf("x = %d\n", x)
+    y := <-c
+    fmt.Printf("y = %d\n", y)
+    fmt.Println(x, y, x + y)
+}