I'm trying to "modernize" some existing code. I have a class which currently has a member variable "Device* device_". It uses new to create an instance in some initialization code and has a "delete device_" in the destructory. Member functions of this class call many other functions that take a Device* as a parameter. This works well, but to "moderni
我试图“现代化”一些现有的代码。 我有一个目前有一个成员变量“Device * device_”的类。 它使用new在一些初始化代码中创建一个实例，并在结构中有一个“delete device_”。 这个类的成员函数调用许多其他将Device *作为参数的函数。 这很好，但为了“代码化”代码，我认为我应该将变量定义为"std::unique_ptr<Device> device_"并删除显式调用，这会使代码更安全，更好。 我的问题是这个 - 那么我该如何
I am confused with unique_ptr and rvalue move philosophy. Let's say we have two collections: std::vector<std::auto_ptr<int>> autoCollection; std::vector<std::unique_ptr<int>> uniqueCollection; Now I would expect the following to fail, as there is no telling what the algorithm is doing internally and maybe making internal pivot copies and the like, thus ripping away
我对unique_ptr和rvalue移动哲学感到困惑。 假设我们有两个集合： std::vector<std::auto_ptr<int>> autoCollection; std::vector<std::unique_ptr<int>> uniqueCollection; 现在我期望以下内容失败，因为没有说明算法在内部执行什么操作，并且可能会制作内部数据透视副本等，从而剥离掉auto_ptr的所有权： std::sort(autoCollection.begin(), autoCollection.end()); 我明白了。 编译器正确地禁
We have an excellent MFC/C++ project that handles the data to and from a legacy database. All classes are exported with AFX_EXT_CLASS (which is dllexport if i am not misunderstanding it). I am currently writing a wrapper so that we can use it in C# applications. This is my first real wrapper, so please bear with me. This is what i have done: Compiled the project with /Yc /Gm- /Clr. It pro
我们有一个优秀的MFC / C ++项目，可处理传入和传出数据库的数据。 所有类都与AFX_EXT_CLASS（如果我不误解它，这是dllexport）导出。 我目前正在编写一个包装器，以便我们可以在C＃应用程序中使用它。 这是我第一次真正的包装，所以请忍受我。 这就是我所做的： 用/ Yc / Gm- / Clr编译项目。 它会生成一个.lib和一个.dll。 我有权访问源代码，因此我在C ++ / Cli项目中添加了头文件的路径。 因此它承认类型。 我
I'm trying to create template functor, which will take as arguments object and member function with any number of parameters. I can't figure out how to write the code correctly with templates. template<typename ItemT, class T, typename ...Args> struct Builder { ItemT operator()(T& object, ItemT (T::*method)(Args...), Args && ... args) { return
我试图创建模板仿函数，它将使用任意数量的参数作为参数对象和成员函数。 我无法弄清楚如何使用模板正确编写代码。 template<typename ItemT, class T, typename ...Args> struct Builder { ItemT operator()(T& object, ItemT (T::*method)(Args...), Args && ... args) { return (object.*method)(std::forward<Args>(args)...); } }; struct Object { int metho
I am attempting to call a templated base class method through a derived class. This is my code struct base { template<typename t> void baseMethod(t s) { std::cout << s; } }; struct der : public base { }; int main() { der d; d.<int>(baseMethod(12)); } The compilation fails and states main.cpp: In function 'int main()': main.cpp:25:5: e
我试图通过派生类调用模板化的基类方法。 这是我的代码 struct base { template<typename t> void baseMethod(t s) { std::cout << s; } }; struct der : public base { }; int main() { der d; d.<int>(baseMethod(12)); } 编译失败并指出 main.cpp：在函数'int main（）'中：main.cpp：25：5：error：expected'unqualified-id before'<'token
How can I get the template definition into a seperate header files? My code compiles when it is included in a single main.cpp. maip.cpp #include <windows.h> #include <tchar.h> template<class T1, class T2> class Base { public: virtual ~Base() {} virtual T1 f1(); virtual T2 f2(); }; template<class T1, class T2> T1 Base<T1, T2>::f1() {return T1();} te
我怎样才能将模板定义转换为独立的头文件？ 我的代码在包含在一个main.cpp中时编译。 maip.cpp #include <windows.h> #include <tchar.h> template<class T1, class T2> class Base { public: virtual ~Base() {} virtual T1 f1(); virtual T2 f2(); }; template<class T1, class T2> T1 Base<T1, T2>::f1() {return T1();} template<class T1, class T2> T2 Base<T1,
I wrote this something-like-stack data structure: template<class T> class Stos { class Element { public: T n; Element* prev; Element(const T& k = 0): n(k), prev(0) {} }; Element* member; Stos(Stos&); public: Stos(const T&); ~Stos(); unsigned int count; T get(); Element* push(const T&); T pop();
我写了这个类似堆栈的数据结构： template<class T> class Stos { class Element { public: T n; Element* prev; Element(const T& k = 0): n(k), prev(0) {} }; Element* member; Stos(Stos&); public: Stos(const T&); ~Stos(); unsigned int count; T get(); Element* push(const T&); T pop(); void mod(const T&am
Possible Duplicate: C++: Easiest way to initialize an STL vector with hardcoded elements I want to initialize a vector like we do in case of an array. Example int vv[2] = {12, 43}; But when I do it like this, vector<int> v(2) = {34, 23}; OR vector<int> v(2); v = {0, 9}; it gives an error: expected primary-expression before '{' token AND error: expected ',
可能重复： C ++：用硬编码元素初始化STL向量的最简单的方法 我想初始化一个向量，就像我们在数组中的情况一样。 例 int vv[2] = {12, 43}; 但是当我这样做时， vector<int> v(2) = {34, 23}; 要么 vector<int> v(2); v = {0, 9}; 它给出了一个错误： 期望在'{'令牌之前的主表达式 和 错误：预期'，'或';' '='令牌之前 分别。 使用新的C ++标准（可能需要在
Following instructions on http://docs.gstreamer.com/display/GstSDK/Installing+on+Windows to install GStreamer and compile tutorials/examples on Windows 7, for compilation using Visual Studio 2010. After installing the SDKs, I try to compile the "hello world" example... Cannot open include file: 'gst/gst.h': No such file or directory. Odd - the tutorials were supposedly configured
按照http://docs.gstreamer.com/display/GstSDK/Installing+on+Windows上的说明安装GStreamer并在Windows 7上编译教程/示例，以便使用Visual Studio 2010进行编译。 安装SDK后，我尝试编译“hello world”示例... Cannot open include file: 'gst/gst.h': No such file or directory. 奇怪 - 教程被认为是配置了这些文件的路径。 不过，我们可以手动添加它们... 将C： gstreamer-sdk 0.10 x86 include gstreamer-0.10
I'm trying to write a Gstreamer plugin in Visual Studio 2010. First, I've downloaded GStreamer package for Windows from http://gstreamer.freedesktop.org/download/. Then, I've added required property sheets and removed the dependency with the Visual Studio runtime as described in http://docs.gstreamer.com/display/GstSDK/Installing+on+Windows. I successfully built some examples fro
我试图在Visual Studio 2010中编写一个Gstreamer插件。 首先，我从http://gstreamer.freedesktop.org/download/下载了用于Windows的GStreamer软件包。 然后，我添加了所需的属性表，并按照http://docs.gstreamer.com/display/GstSDK/Installing+on+Windows中所述，使用Visual Studio运行时删除依赖项。 我成功地从Gstreamer应用程序开发手册中构建了一些示例，所以我认为SDK已正确设置。 现在，我的另一个目标是编写我自