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One of the most common data structures in Software Engineering is the tree. In the .Net framework for instance you can find them in the file system, the controls of a win-forms application, nodes in an XML document etc. A common task with trees is to traverse all nodes to look for a specific node or perform an operation on each node. This is ...

In the project I am currently working on we use a domain model with a quite deep nested structure of classes, code like the following is quite common. // do something with the Adress Console.Writeline(Contract.Parties.Client.Adress.Street); The problem with this is that not all Contacts have a related Parties object and if we do have a ...