<分区>
假设我们有基类 Table
template <typename T>
class Table
{
public:
Table();
virtual ~Table() = default;
private:
// get all column names as list
virtual std::list<std::string> getAllColumnsImpl();
};
我想从基类继承 TestTable 类并覆盖方法 getAllColumnsImpl:
class TestTable :
public Table<TestTable>
{
public:
TestTable();
virtual ~TestTable() = default;
std::string Description;
int Count;
private:
// get all column names as list
std::list<std::string> getAllColumnsImpl() override;
};
一般情况下可以吗？
例如，我有如下链接器错误:
error LNK2019: unresolved external symbol "public: __cdecl Table<class TestTable>::Table<class TestTable>(void)" (??0?$Table@VTestTable@@@@QEAA@XZ) referenced in function "public: __cdecl TestTable::TestTable(void)" (??0TestTable@@QEAA@XZ)