Practice concurrency in golang

Uploading some snippets I created to help me better understand concurrency in
general and specifically concurrency in golang.

go/waitgroups.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"fmt"
+	"sync"
+	"time"
+)
+
+func saySomething(x string, wg *sync.WaitGroup) {
+	defer wg.Done()
+	fmt.Println(x)
+	time.Sleep(time.Second)
+	fmt.Printf("Finished saying \"%s\"\n", x)
+}
+
+func main() {
+	var wg sync.WaitGroup
+	var things = [5]string{"chicken", "panini", "cheeseburger", "rice", "bread"}
+	for i := 0; i < 5; i += 1 {
+		wg.Add(1)
+		go saySomething(things[i], &wg)
+	}
+	wg.Wait()
+}