initial import

best-practices/error-handling-2/main.go

@@ -0,0 +1,31 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+)
+
+var err error
+var f *os.File
+
+func write(text string) {
+	if err != nil {
+		return
+	}
+	_, err = fmt.Fprintln(f, text)
+}
+
+func main() {
+	f, err = os.OpenFile("test.txt", os.O_WRONLY, os.ModePerm)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer f.Close()
+	write("Hello world 2")
+	write("Hello world 2")
+	if err != nil {
+		log.Fatal(err)
+	}
+	fmt.Println(f)
+}

best-practices/error-handling-2/test.txt

@@ -0,0 +1,2 @@
+Hello world 2
+Hello world 2