Value Objects to the rescue!

Value objects represent typed values, that have no conceptual identity, in your domain. They can help you write better code that is less error-prone, more performant and more expressive. Wow!

Paul Milian
Sep 8, 2019 · 8 min read
A lego super man
A lego super man
Photo by Esteban Lopez on Unsplash

Domain-Driven Design

Image of the book “Domain-Driven Design”
Image of the book “Domain-Driven Design”
the blue book

Main Characteristics

1. Value Equality

2. Immutability

3. Self-Validation

Example of a value object


Reduce Primitive Obsession

Image for post
Image for post

Type safety

private float distance;
void sendEmail(String email, String subject, String body);
sendEmail("Some subject", "Some content", "");
sendEmail(EmailAddress recipient, Subject subject, Content content);
sendEmail(Email email);



Reduce duplication

The meme image of two spider man pointing at each other
The meme image of two spider man pointing at each other

Easier to read

Better performance




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