How to find a type of an object in Go?

How do I find the type of an object in Go? In Python, I just use typeof to fetch the type of object. Similarly in Go, is there a way to implement the same ?

I found 3 ways to return a variable’s type at runtime:

Using string formatting:

func typeof(v interface{}) string {
    return fmt.Sprintf("%T", v)
}

Using reflect package

func typeof(v interface{}) string {
    return reflect.TypeOf(v).String()
}

Using type assertions

func typeof(v interface{}) string {
    switch v.(type) {
    case int:
        return "int"
    case float64:
        return "float64"
    //... etc
    default:
        return "unknown"
    }
}

Every method has a different best use case:

• string formatting – short and low footprint (not necessary to import reflect package)
• reflect package – when need more details about the type we have access to the full reflection capabilities
• type assertions – allows grouping types, for example recognize all int32, int64, uint32, uint64 types as “int”