c++ - 在C++中使用私有(private)类时未在此作用域错误中声明

我上课

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行会给我以下错误:

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

我哪里错了？

最佳答案

在声明它之前，请先使用myInnerClass。

该代码将编译:

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