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Category Archives: Domain-Driven Design
Aggregated specifications
An example from my inversion of control talk involves a message formatter. It applies formatting rules to a string. public interface IMessageFomatter { string Format(string message); } Instead of doing all the work in the implementation of this interface, the … Continue reading
Posted in C#, Domain-Driven Design
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More On Value Objects
A few days ago Dylan Beattie wrote a nice post about value objects. He explains the idea in a more palatable way than my attempt: If it’s not clear how to model a particular element in your model, try asking … Continue reading
There is never a collection of Value Objects
Adding to a Value Object property always adds to it, never adds another instance to it. Distinguishing Value Objects by maintaining a collection of them implies identity. It is a mistake to attempt to maintain a collection of Value Objects. … Continue reading
