Hands-On Dependency Injection in Go

Start with simple – get complicated only when you must

As programmers, we should always strive to keep things simple, and resort to complexity when there is no other way. Let's see this principle in action. Try to determine what this next example does in three seconds or less:

func NotSoSimple(ID int64, name string, age int, registered bool) string {  out := &bytes.Buffer{}  out.WriteString(strconv.FormatInt(ID, 10))  out.WriteString("-")  out.WriteString(strings.Replace(name, " ", "_", -1))  out.WriteString("-")  out.WriteString(strconv.Itoa(age))  out.WriteString("-")  out.WriteString(strconv.FormatBool(registered))  return out.String()}

How about this one:

func Simpler(ID int64, name string, age int, registered bool) string { nameWithNoSpaces ...