Data commit

Task/Concurrent-computing/Go/concurrent-computing-1.go

@@ -0,0 +1,23 @@
+package main
+
+import (
+    "fmt"
+    "golang.org/x/exp/rand"
+    "time"
+)
+
+func main() {
+    words := []string{"Enjoy", "Rosetta", "Code"}
+    seed := uint64(time.Now().UnixNano())
+    q := make(chan string)
+    for i, w := range words {
+        go func(w string, seed uint64) {
+            r := rand.New(rand.NewSource(seed))
+            time.Sleep(time.Duration(r.Int63n(1e9)))
+            q <- w
+        }(w, seed+uint64(i))
+    }
+    for i := 0; i < len(words); i++ {
+        fmt.Println(<-q)
+    }
+}

Task/Concurrent-computing/Go/concurrent-computing-2.go

@@ -0,0 +1,25 @@
+package main
+
+import (
+    "log"
+    "math/rand"
+    "os"
+    "sync"
+    "time"
+)
+
+func main() {
+    words := []string{"Enjoy", "Rosetta", "Code"}
+    rand.Seed(time.Now().UnixNano())
+    l := log.New(os.Stdout, "", 0)
+    var q sync.WaitGroup
+    q.Add(len(words))
+    for _, w := range words {
+        w := w
+        time.AfterFunc(time.Duration(rand.Int63n(1e9)), func() {
+            l.Println(w)
+            q.Done()
+        })
+    }
+    q.Wait()
+}

Task/Concurrent-computing/Go/concurrent-computing-3.go

@@ -0,0 +1,25 @@
+package main
+
+import "fmt"
+
+func main() {
+    w1 := make(chan bool, 1)
+    w2 := make(chan bool, 1)
+    w3 := make(chan bool, 1)
+    for i := 0; i < 3; i++ {
+        w1 <- true
+        w2 <- true
+        w3 <- true
+        fmt.Println()
+        for i := 0; i < 3; i++ {
+            select {
+            case <-w1:
+                fmt.Println("Enjoy")
+            case <-w2:
+                fmt.Println("Rosetta")
+            case <-w3:
+                fmt.Println("Code")
+            }
+        }
+    }
+}