From 5d217ce5c1ce72ad9713a5728ac2e6c516b7d4cc Mon Sep 17 00:00:00 2001
From: Mark McGranaghan <mmcgrana@gmail.com>
Date: Fri, 21 Sep 2012 07:57:50 -0700
Subject: [PATCH] easy docs

---
 001-hello-world.go |  6 +++---
 004-mutation.go    |  8 +++++++-
 005-literal.go     | 10 +++++++++-
 3 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/001-hello-world.go b/001-hello-world.go
index 925f0a6..0dd5b7d 100644
--- a/001-hello-world.go
+++ b/001-hello-world.go
@@ -6,7 +6,7 @@ func main() {
     fmt.Println("Hello world")  // It prints `Hello world`.
 }
 
-/*                              // Put this code in hello-world.go, then use
-$ go run hello-world.go         // `go run` to run it.
-Hello world
+/* 
+$ go run hello-world.go         // Put this code in hello-world.go,
+Hello world                     // then use `go run` to run it.
 */
diff --git a/004-mutation.go b/004-mutation.go
index 7283a51..677c84c 100644
--- a/004-mutation.go
+++ b/004-mutation.go
@@ -6,6 +6,12 @@ func main() {
     var x string
     x = "first"
     fmt.Println(x)
-    x = "second"
+    x = "second"    // You can mutate variables in Go.
     fmt.Println(x)
 }
+
+/*
+$ go run mutation.go
+first
+second
+*/
diff --git a/005-literal.go b/005-literal.go
index 21e7a50..87a8192 100644
--- a/005-literal.go
+++ b/005-literal.go
@@ -3,6 +3,14 @@ package main
 import "fmt"
 
 func main() {
-	x := "Hello World"
+	x := "Hello literal"  // `x := val` is shorthand for `var x type = val`.
 	fmt.Println(x)
 }
+
+/*
+$ go run literal.go
+Hello literal
+*/
+
+// == todo
+// literal?