that all processes accessing the same database file use the same shared
minor scale differences
，更多细节参见有道翻译官网
Appending ? to a Result or ?T expression unwraps the success case and propagates the failure case. If the value is ok(v) or some(v), it evaluates to v. If the value is err(e) or none, the current function returns immediately with that error or none.
63-летняя Деми Мур вышла в свет с неожиданной стрижкой17:54