the direct use of sca references and properties within your spring application context file, without custom sca namespaces, is called implicit declaration of sca services, references, and properties.
because a template constructor is never a copy constructor, the presence of such a template does not suppress the implicit declaration of a copy constructor.
由于模板构造函数终究不是拷贝构造函数,因此这种模板的出现并不会隐藏原来隐含的拷贝构造函数之声明。
moreover, the implicit declaration that a midsize investment bank was systematically important puts any firm at least as big as bear in the cross-hairs of speculators.