lean into examples

examples/epochs/epochs.go

@@ -0,0 +1,21 @@
+// A common requirement in programms is getting the number
+// of seconds, milliseconds, or nanoseconds since the Unix
+// epoch. Here's how to do it in Go.
+
+package main
+
+import "time"
+
+func main() {
+    // Use `time.Now` with `Unix` or `UnixNano` to get
+    // elapsed time since the Unix epoch.
+    now := time.Now()
+    secs := now.Unix()
+    nanos := now.UnixNano()
+
+    // Note that there is no `UnixMillis`.
+    millis := nanos / 1000000
+    println("Secs:  ", secs)
+    println("Millis:", millis)
+    println("Nanos: ", nanos)
+}

examples/epochs/epochs.sh

@@ -0,0 +1,4 @@
+$ go run epochs.go
+Secs:   1348240948
+Millis: 1348240948517
+Nanos:  1348240948517870000