Is there a default IEqualityComparer implementation that uses ReferenceEquals?
IEqualityComparer
ReferenceEquals
EqualityComparer.Default uses
EqualityComparer.Default
Microsoft provide ObjectReferenceEqualityComparer in System.Data.Entity.Infrastructure. Just use ObjectReferenceEqualityComparer.Default as comparer.
ObjectReferenceEqualityComparer
System.Data.Entity.Infrastructure
ObjectReferenceEqualityComparer.Default