Value objects

Value objects are not unique. When deciding whether to model something as a value object, ask the following questions:

• Is this object immutable?
• Does it measure, quantify, or describe a domain concept?
• Can it be compared to other objects of the same type by just its values?

If you are still unsure, you can treat something as a value object and then upgrade it to an entity later.

// Product is a value object that models a CoffeeCo product.
type Product struct {
	ItemName  string
	BasePrice money.Money
}