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What is a value object in programming?
In computer science, a value object is a small object that represents a simple entity whose equality is not based on identity: i.e. two value objects are equal when they have the same value, not necessarily being the same object. Examples of value objects are objects representing an amount of money or a date range.
Is object a value?
Every object has an identity, a type and a value. The value of some objects can change. Objects whose value can change are said to be mutable; objects whose value is unchangeable once they are created are called immutable. E.g.
Can a Value Object have another Value Object?
Yes, you can have value objects inside other value objects.
How to use Domain Driven Design in C #?
Domain Driven Design (DDD) encourages the use of immutable value objects in domain models. Learn about how to use DDD in your C# coding projects today.
What does DDD mean for immutable value objects?
DDD guides us to think about behaviors in our entities, not just setting and getting property values. FixAuthorName represents a behavior needed to solve a particular problem. Just because PersonFullName is immutable, doesn’t mean the type can’t be smart.
What is the key property of a value object?
The key property of a Value Object it that it has no identity. It is defined only by it’s attributes, and any other instance with identical attribute values can be substituted. Los Techies had a good explanation on their blog a while back, and it has been asked on StackOverflow.
What’s the difference between entities and value objects?
3 distinction between Entities and Value Objects. Identifier vs structural equality: Entities have identifier,entities are the same if they have the same identifier. Value Objects on beyond the hand have structural equality, we consider two value objects equal when all the fields are the same.