adding documentation around time.Ticker

Author: symonk

tickers/main.go

@@ -1,5 +1,37 @@
 package tickers
 
+import (
+	"fmt"
+	"time"
+)
+
+/*
+`Timers` are useful if you want to do something once in the future.
+Tickers are for when you want to do something repeatidly at set
+intervals, thing of `cron` on linux for example.  A ticker will
+periodically tick until told to stop.
+*/
 func Run() {
+	basicTicker()
+}
+
+func basicTicker() {
+	ticker := time.NewTicker(1 * time.Second)
+	done := make(chan bool) // Make a new channel to track if we are 'done'.
 
+	go func() {
+		for {
+			select {
+			case <-done:
+				// We have finished, the ticker has been stopped.
+				return
+			case <-ticker.C:
+				fmt.Println("Ticked again")
+			}
+		}
+	}()
+	time.Sleep(6 * time.Second)
+	ticker.Stop()
+	done <- true
+	fmt.Printf("Stopped the ticker, ticked %d times", len(done))
 }