Data commit

Task/Concurrent-computing/V-(Vlang)/concurrent-computing-1.v

@@ -0,0 +1,23 @@
+import time
+import rand
+import rand.pcg32
+import rand.seed
+
+fn main() {
+    words := ['Enjoy', 'Rosetta', 'Code']
+    seed_u64 := u64(time.now().unix_time_milli())
+    q := chan string{}
+    for i, w in words {
+        go fn (q chan string, w string, seed_u64 u64) {
+            mut rng := pcg32.PCG32RNG{}
+            time_seed := seed.time_seed_array(2)
+            seed_arr := [u32(seed_u64), u32(seed_u64 >> 32), time_seed[0], time_seed[1]]
+            rng.seed(seed_arr)
+            time.sleep(time.Duration(rng.i64n(1_000_000_000)))
+            q <- w
+        }(q, w, seed_u64 + u64(i))
+    }
+    for _ in 0 .. words.len {
+        println(<-q)
+    }
+}

Task/Concurrent-computing/V-(Vlang)/concurrent-computing-2.v

@@ -0,0 +1,19 @@
+import time
+import rand
+import rand.pcg32
+import rand.seed
+
+fn main() {
+    words := ['Enjoy', 'Rosetta', 'Code']
+    mut threads := []thread{} // mutable array to hold the id of the thread
+    for w in words {
+        threads << go fn (w string) { // record the thread
+            mut rng := pcg32.PCG32RNG{}
+            time_seed := seed.time_seed_array(4) // the time derived array to seed the random generator
+            rng.seed(time_seed)
+            time.sleep(time.Duration(rng.i64n(1_000_000_000)))
+            println(w)
+        }(w)
+    }
+    threads.wait() // join the thread waiting. wait() is defined for threads and arrays of threads
+}