Luca Bolognese's WebLog

Other posts: Part II - Making the class better Part III - Using a struct Part IV - A class with a special value Value objects are objects for which the identity is based on their state instead of their pointer in memory. For example, a...

Other posts: Part I - Using a class Part III - Using a struct Part IV - A class with a special value In the previous post I showed how to trivially implement a value object. The code works but it has several issues. Some are very simple...

Other posts: Part I - Using a class Part II - Making the class better Part IV - A class with a special value In Part II I talked about the asymmetry created by using 'null' as the special value for our little DateSpan domain. We also noticed...

Other posts: Part I - Using a class Part II - Making the class better Part III - Using a struct In the last post we looked at structs as ways to implement immutable value objects and we discovered that they have several issues. A good thing about the...

Here is a quick implementation of XIRR (using Excel nomenclature) written in C#. Disclaimer : this is a super simple Bisection-based implementation. People tend to prefer the Newton method, but this is simpler and works for the app I'm writing. I decided...