Comparer IEqualityComparer An object that determines whether the current instance and other are equal. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. This is really amazing code and works great for .Safi Standard libraries. If you are in a .NET Core 2.1 https://c-object-kullan-m96299.wikibyby.com/792406/değil_hakkında_detaylar_bilinen_c_istructuralequatable_kullanımı