c ++是否可以从实例获取对别名的访问（使用）

我的缓冲区的类型和大小由模板设置。 I store the type with a using, and allow access to the size with a method. Everything's fine with the size. Now, can I gain access to the type (like in line Buffer<char,6>::value_type val = 'z'; ) but from an instance of Buffer? 我尝试了注释语...