c++ - 在 C++ 中使用私有(private)类时未在此范围内声明错误

Question

我有课

class myClass
{
    private:

       std::list <myInnerClass> mylists;

       class myInnerClass
       {
            // Design for this private class
       }
}

我不明白为什么 std::list <myInnerClass> mylists 这行给我以下错误:

  - Type 'myInnerClass' was not declared in this scope
  - Type 'myInnerClass' could not be resolved

我哪里错了？

Answer 1

在声明之前使用 myInnerClass。

此代码将编译:

class myClass
{
    private:
       class myInnerClass
       {
            // Design for this private class
       }
       std::list <myInnerClass> mylists;
}