some meta

src/01-hello.go

@@ -3,5 +3,9 @@ package main
 import "fmt"
 
 func main() {
-	fmt.Println("Hello World")
+	fmt.Println("Hello, world")
 }
+
+// == running
+// $ go run 01-hello.go
+// Hello, world

src/xx-errors.go

@@ -17,3 +17,7 @@ func main() {
 	_, e := myFun(42)
 	fmt.Println(e)
 }
+
+// == todo
+// custom errors
+// data conveying errors

src/xx-postgres.go

@@ -50,8 +50,16 @@ func main() {
 	fmt.Println(dropRep)
 }
 
+// == running
 // # start postgres
 // $ createdb gobyexample
 // $ cd xx-postgres
 // $ go get
 // $ ./xx-postgres
+
+// == todo
+// connection pooling
+// concurrency
+// re-connection
+// errors
+// explain

src/xx-redis.go

@@ -63,7 +63,14 @@ func main() {
 	time.Sleep(time.Second)
 }
 
+// == running
 // $ redis-server
 // $ cd xx-redis
 // $ go get
 // $ ./xx-redis
+
+// == todo
+// connection pooling
+// concurrency
+// reconnection
+// errors