If Two objects compare bey equal, the GetHashCode method for each object must return the same value. However, if two objects do not compare bey equal, the GetHashCode methods for the two object do not have to return different values. = to provide value equality checks (vs the default reference https://titusmblvf.blogpostie.com/50312164/5-basit-teknikleri-için-c-istructuralequatable-kullanımı