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Jul 4, 2016 · default constructor会调用member的默认构造函数，实际上任何构造函数都会，只要这个member没有出现在初始化列表里；但是对int这样的类型来说，默认构造函数不代表这个字段会被初始化——它们实际上什么都不干，所以字段的值仍然是没有初始化的状态。
Jun 24, 2021 · 补充一点，使用default和自己手写一个空的构造函数还有一点区别，会影响该类是有user define constructor还是default constructor，在进行trivial 或pod这些判断时有区别
Sep 21, 2015 · 上面代码中的构造函数不光是名誉上不算真正的defaulted constructor，而且和implicitly defaulted constructor有一个隐藏区别：implicitly defaulted constructor被隐式声明为noexcept，而这个函数没有noexcept
May 30, 2015 · The implicitly-declared or defaulted default constructor for class T is undefined (until C++11)defined as deleted (since C++11) if any of the following is true: T has a member of reference type without a brace-or-equal initializer. (since C++11) T has a const member without user-defined default constructor or a brace-or-equal initializer (since ...
(although at least one Creator exists): can only instantiate non-static inner class by using default, no-argument constructor。使用静态内部类，或者给内部类添加一个无参构造器都能反序列化。
Sep 26, 2016 · A default constructor that is defaulted and not defined as deleted is implicitly defined when it is odr-used ([basic.def.odr]) to create an object of its class type ([intro.object]) or when it is explicitly defaulted after its first declaration. 2. 意思大体正确，不过后面说得绝对了。类内初始值也可以用来初始化a：
Oct 29, 2011 · Default constructor cannot handle exception type WowApiException thrown by implicit super constructor. Must define an explicit constructor Ich habe allerdings keine Idee, was an dieser Stelle zu tun ist.
高德地图 AMap.pixel is not a constructor 咋回事儿啊？ 今天用vue3 写地图 官网扒的程序 本地一跑就报错 不是构造函数 是咋回事儿 有没有大佬解答一下 显示全部
Jul 27, 2022 · A class type T is const-default-constructible if default-initialization of T would invoke a user-provided constructor of T(not inherited from a base class) or if —— each direct non-variant non-static data member M of T has a default member initializer or, if M is of class type X (or array thereof),X is const-default-constructible ...
Java反射中使用getConstructor()方法来获取构造方法时，为什么getConstructor()中的参数要传入想要获取的…
