more

README

@@ -1,8 +1,17 @@
+= next
+write blog post on Go on Heroku
+market blog post on Go on Heroku
+proof ebook toolchain
+
+= vision
+must-have book for hackers interested in Go
+sold at a significant price and producing real revenue
+notable example of ebook product and marketing
+
 = values
 design
-curation
-excellence
-excitement
+empathy
+creativity
 
 = validation
 private emails
@@ -55,7 +64,6 @@ gobyexample.com signups
 * web app
 * hipache port
 * templating
-* scatter-gather
 * ssh
 * environment variables
 * dns
@@ -71,3 +79,5 @@ gobyexample.com signups
 * sort-by
 * errors
 * compilation
+* time
+* time duration

src/xx-elapsed.go

@@ -0,0 +1,10 @@
+package main
+
+import ("time"; "fmt")
+
+func main() {
+	start := time.Now()
+	time.Sleep(3 * time.Second)
+	finish := time.Now()
+	fmt.Println(finish.Sub(start))
+}

src/xx-epoch.go

@@ -0,0 +1,13 @@
+package main
+
+import ("time"; "fmt")
+
+func main() {
+	now := time.Now()
+	secs := now.Unix()
+	nanos := now.UnixNano()
+	millis := nanos / 1000000
+	fmt.Println("Seconds since epoch:", secs)
+	fmt.Println("Millis  since epoch:", millis)
+	fmt.Println("Nanos   since epoch:", nanos)
+}

src/xx-scatter-gather.go

@@ -0,0 +1,21 @@
+package main
+
+import ("sync"; "time"; "math/rand"; "fmt")
+
+func main() {
+	times := new([20]int)
+	wait := new(sync.WaitGroup)
+	for i := 0; i < 20; i++ {
+		n := i
+	  	wait.Add(1)
+	  	go func() {
+	  	  	opTime := rand.Intn(2000)
+	  	  	time.Sleep(time.Duration(opTime) * time.Millisecond)
+	  	  	fmt.Println(n)
+	  	  	times[n] = opTime
+	  	  	wait.Done()
+	  	}()
+	}
+	wait.Wait()
+	fmt.Println(*times)
+}