public override int GetHashCode()
{
unchecked
{
var hashCode = (EditionName != null ? EditionName.GetHashCode() : 0);
hashCode = (hashCode * 397) ^ EditionDate.GetHashCode();
hashCode = (hashCode * 397) ^ EditionCirculation;
return(hashCode);
}
}
public override int GetHashCode()
{
int hashCode = 1328352786;
hashCode = hashCode * -1521134295 + EqualityComparer <string> .Default.GetHashCode(EditionName);
hashCode = hashCode * -1521134295 + EditionDate.GetHashCode();
hashCode = hashCode * -1521134295 + _editionCirculation.GetHashCode();
return(hashCode);
}