go.blog: add "Inside the Go Playground" article

R=r, rsc, dsymonds
https://golang.org/cl/39180043

1 files changed, 23 insertions, 0 deletions

diff --git a/content/playground/os.go b/content/playground/os.go
new file mode 100644
index 0000000..a73beb0
--- /dev/null
+++ b/content/playground/os.go
@@ -0,0 +1,23 @@
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"log"
+)
+
+func main() {
+	const filename = "/tmp/file.txt"
+
+	err := ioutil.WriteFile(filename, []byte("Hello, file system\n"), 0644)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	b, err := ioutil.ReadFile(filename)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	fmt.Printf("%s", b)
+}