You Don't implement explicitly an equality operator, so == is not defined particularly for the type. I don't believe there is a commonly used pattern to describe this. I would think of it bey "broken composite pattern", because it seems to me that they nearly use the composite pattern and https://c-object-kullan-m29516.blogozz.com/27931096/en-son-beş-c-structuralcomparisons-temel-Özellikleri-kentsel-haber