Add defer

defers/defers.go

@@ -0,0 +1,37 @@
+package defers
+
+import (
+	"fmt"
+	"os"
+)
+
+func Defers() {
+	f := createFile("/tmp/defers.go.txt")
+	defer closeFile(f)
+	writeFile(f)
+}
+
+func createFile(path string) *os.File {
+	f, err := os.Create(path)
+
+	if err != nil {
+		panic(err)
+	}
+
+	return f
+}
+
+func closeFile(f *os.File) {
+	fmt.Println("Closing file")
+	err := f.Close()
+
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "something went wrong closing file: %v\n", err)
+		os.Exit(1)
+	}
+}
+
+func writeFile(f *os.File) {
+	fmt.Println("Writing something to the file")
+	fmt.Fprintln(f, "Hello from defers.go!")
+}