#overwrite

ORA-49429: File already exists and OVERWRITE option not specified [string]

文档解释ORA-49429:FilealreadyexistsandOVERWRITEoptionnotspecified[string]Cause:Theclientattemptedtocreateafilethatalreadyexists.Action:EitherremovethefileorusetheOV...

ORA-29533: attempt to overwrite class or resource string while defining or compiling string.string

文档解释ORA-29533:attempttooverwriteclassorresourcestringwhiledefiningorcompilingstring.stringCause:AclassorresourcedefinedbyaSQLJsourceconflictedwithanexistingobje...

overload、override、overwrite的介绍

 答:(1)overload(重载),即函数重载: ①在同一个类中; ②函数名字相同; ③函数参数不同(类型不同、数量不同,两者满足其一即可); ④不以返回值类型不同作为函数重载的条件。 (2)override(覆盖,子类改写父类的虚函数),用于实现C++中多...