default(Nullable(type)) vs default(type)
default(Nullable<long>) == null default(long?) == null default(long) == 0L转载于:https://www.cnblogs.com/dayang12525/p/11636695.html
default(Nullable<long>) == null default(long?) == null default(long) == 0L转载于:https://www.cnblogs.com/dayang12525/p/11636695.html