c – 用于引用指针的可选参数?
发布时间:2020-12-16 10:52:02 所属栏目:百科 来源:网络整理
导读:如何将第二个参数声明为可选参数? template typename Tinline void Delete (T *MemoryToFree,T *MemoryToFree2 = ){ delete MemoryToFree; MemoryToFree = NULL; delete MemoryToFree2; MemoryToFree2 = NULL;} 我在=运算符之后尝试了几个东西,比如NULL,(T
如何将第二个参数声明为可选参数?
template <typename T> inline void Delete (T *&MemoryToFree,T *&MemoryToFree2 = ){ delete MemoryToFree; MemoryToFree = NULL; delete MemoryToFree2; MemoryToFree2 = NULL; } 我在=运算符之后尝试了几个东西,比如NULL,(T *)NULL等.可以这样做吗? 编译器允许我这样做的唯一方法是使用重载… template <typename T,typename T2> inline void Delete (T *&MemoryToFree,T2 *&MemoryToFree2){ delete MemoryToFree; MemoryToFree = NULL; delete MemoryToFree2; MemoryToFree2 = NULL; } 解决方法
你可以重载该功能
template <typename T> inline void Delete (T *&MemoryToFree){ delete MemoryToFree; MemoryToFree = NULL; } template <typename T,T2 *&MemoryToFree2){ delete MemoryToFree; MemoryToFree = NULL; delete MemoryToFree2; MemoryToFree2 = NULL; } (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |