Inheriting from a template class in c++

Let's say we have a template class Area , which has a member variable T area , a T getArea() and a void setArea(T) member functions. I can create an Area object of a specific type by typing Area<int> . Now I have a class Rectangle that inherits the Area class. Since Rectangle itself is not a template, I cannot type Rectangle<int> . How do I specialize the inherited Area typ

继承自c ++中的模板类

假设我们有一个模板类Area ,它具有成员变量T area , T getArea()和void setArea(T)成员函数。 我可以通过键入Area<int>来创建特定类型的Area对象。 现在我有一个继承Area类的Rectangle类。 由于Rectangle本身不是模板,因此我无法键入Rectangle<int> 。 我如何专门化Rectangle对象的继承Area类型? 编辑:对不起,我忘了澄清 - 我的问题是是否有可能继承区域没有专门化,所以它不是继承为区域的整数,但

C++ Composite Template Class Factory

Is it possible to make a composite template class factory without manually specifying all of the combinations? What I mean is if I have these classes: class CompositeBase {}; template< typename C1, typename C2, typename C3 > class Composite : public CompositeBase { private: C1 component1; C2 component2; C3 component3; }; class Component0 {}; //Also have Component1-9 I would

C ++复合模板类工厂

是否有可能在没有手动指定所有组合的情况下制作复合模板类工厂? 我的意思是,如果我有这些类: class CompositeBase {}; template< typename C1, typename C2, typename C3 > class Composite : public CompositeBase { private: C1 component1; C2 component2; C3 component3; }; class Component0 {}; //Also have Component1-9 我想创建一个这样的功能: CompositeBase *CreateComposite(int c1, int

Being extremely pedantic with the way your code is compiled

I would like to find out which is the most extreme error checking flag combination for g++ (4.7). We are not using the new C++11 specification, since we need to cross compile the code with older compilers, and these older compilers (mostly g++ 4.0) often cause problems which simply are ignored by the g++4.7. Right now we use the following set of flags: -Wall -Wcomment -Wformat -Winit-self -an

对代码编译的方式非常迂腐

我想知道哪个是g ++(4.7)中最极端的错误检查标志组合。 我们没有使用新的C ++ 11规范,因为我们需要使用较早的编译器交叉编译代码,而这些较旧的编译器(主要是g ++ 4.0)通常会导致g ++ 4.7忽略的问题。 现在我们使用下面一组标志: -Wall -Wcomment -Wformat -Winit-self -ansi -pedantic-errors -Wno-long-long -Wmissing-include-dirs -Werror -Wextra 但是这种组合并不能识别诸如将double传递给期望int的函数的问题

how to use cmake on mac

this may seems obvious for someone, but not for me. How to use cmake on Mac? Let's say I have a project in Xcode and I want that project link with assimp library. So I download assimp source, generate build with cmake, point Xcode to /include in downloaded source and what then? Where are built libraries? What I only have is Xcode project of that library. Does it generate libraries?

如何在Mac上使用cmake

这对某个人来说似乎很明显,但对我来说却不是这样。 如何在Mac上使用cmake? 比方说,我在Xcode中有一个项目,我希望该项目与assimp库链接。 所以我下载了assimp源文件,用cmake生成了build,将Xcode指向/ include在下载的源代码中,然后呢? 建库的地方在哪里? 我只有这个库的Xcode项目。 它会生成库吗? 如果我使用brew来安装assimp,我只在我的Xcode项目中进行设置: 标题路径是: 在/ usr /本地/包括 库搜

Xcode 5 can't find header files in usr/include

Im working on a C++ project in Xcode with some external header files and Xcode is unable to find header files in usr/include I have also tried adding usr/include in Search Header Files Path but it's not working However Xcode can find all the header files in usr/local/include when I add usr/local/include in Search Header Files but not in usr/include usr/include doesn't work in Header S

Xcode 5在usr / include中找不到头文件

我在Xcode中使用一些外部头文件和Xcode在C ++项目上工作,无法在usr / include中找到头文件 我也尝试在搜索头文件路径中添加usr / include ,但它不起作用然而,当我在搜索头文件中添加usr / local / include但不在usr / include中时,Xcode可以在usr / local / include中找到所有头文件 usr / include在标题搜索路径中不起作用,但usr / local / include作品。 我错过了什么吗? 权限设置或usr / include的任何内容 更

OpenCV on OSX Mavericks with Xcode

I'm trying to run OpenCV on OSX in Xcode. I have downloaded the code from github. And used cmake to compile it. Next I created a new Xcode project with the following code: #include <opencv2/core/core.hpp> #include <opencv2/highgui/highgui.hpp> #include <iostream> using namespace cv; using namespace std; int main( int argc, char** argv ) { if( argc != 2) {

使用Xcode的OSX Mavericks上的OpenCV

我想在Xcode的OSX上运行OpenCV。 我已经从github下载了代码。 并用cmake编译它。 接下来,我使用以下代码创建了一个新的Xcode项目: #include <opencv2/core/core.hpp> #include <opencv2/highgui/highgui.hpp> #include <iostream> using namespace cv; using namespace std; int main( int argc, char** argv ) { if( argc != 2) { cout <<" Usage: display_image ImageToLoadA

Loading and storing variables using an LLVM pass

I am trying to do this: 1- Insert a variable t1. 2- Insert a call to the chrono function (to get time). 3- Store chrono's return value in t1 4- Insert a call to "function" (a function I wrote) and pass t1 as its parameter. function does some calculations on t1. In code it is: float t1 = std::chrono::duration_cast<chrono::nanoseconds(chrono_steady_clock::now().time_sin

使用LLVM传递加载和存储变量

我正在尝试这样做: 1-插入一个变量t1。 2-向chrono功能插入呼叫(以获得时间)。 3-在t1中存储计时器的返回值 4-将一个调用插入到“函数”(我写的一个函数)并传递t1作为参数。 函数对t1进行一些计算。 在代码中它是: float t1 = std::chrono::duration_cast<chrono::nanoseconds(chrono_steady_clock::now().time_since_epoch().count()); function(t1); 不过,我想在我想修改的程序中插入LLVM pass。 我不确

Replace all uses of an instruction to delete with an Undef value at llvm?

I would like to replace all uses of an instruction, which is a function call that I want to delete, with an Undef value. First, I declare my undef value like this UndefValue *undefval; and then I try to replace all the uses of my instruction currentInst->replaceAllUsesWith(undefval); currentInst is an Instruction* currentInst; value which refers to my current instruction. This causes

用llvm上的Undef值替换要删除指令的所有用法?

我想用一个Undef值替换指令的所有用途,这是一个我想要删除的函数调用。 首先,我宣布我的undef值是这样的 UndefValue *undefval; 然后我尝试替换我的指令的所有用途 currentInst->replaceAllUsesWith(undefval); currentInst是一个 Instruction* currentInst; 值是指我目前的指令。 这会导致LLVM产生以下错误ans断言: opt:/home/troulakis/D​​ocuments/LLVM_Project/llvm/llvm/lib/IR/Value.cpp:332:void llv

LLVM ParseIR Segfault

I'm trying to compile a function ("fun") to LLVM IR and create a Module using the ParseIR function. The program segfaults at the call to ParseIR. I'm using LLVM 3.5 and the code is below. #include <cstdio> #include <iostream> #include <sstream> #include <string> #include "llvm/ADT/StringRef.h" #include "llvm/Bitcode/ReaderWriter.h" #include "llvm/Exec

LLVM ParseIR Segfault

我试图编译一个函数(“fun”)到LLVM IR并使用ParseIR函数创建一个Module。 该程序在ParseIR调用中发生段错误。 我使用的是LLVM 3.5,代码如下。 #include <cstdio> #include <iostream> #include <sstream> #include <string> #include "llvm/ADT/StringRef.h" #include "llvm/Bitcode/ReaderWriter.h" #include "llvm/ExecutionEngine/ExecutionEngine.h" #include "llvm/ExecutionEngine/MCJIT.h"

C++ code migration: handling uninitialized pointers

As per the title, I am planning to move some legacy code developed a decade+ ago for AIX. The problem is the code base is huge. The developers didn't initialize their pointers in the original code. Now while migrating the code to the latest servers, I see some problems with it. I know that the best solution is to run through all the code and initialize all the variables whereever require

C ++代码迁移:处理未初始化的指针

根据标题,我计划移动一些为AIX而开发的遗留代码。 问题是代码库非常庞大。 开发者没有在原始代码中初始化他们的指针。 现在将代码迁移到最新的服务器时,我发现它存在一些问题。 我知道最好的解决方案是运行所有代码并初始化所有变量。 但是,我只是想知道是否有任何其他解决方案可用于解决此问题。 我试过谷歌,但无法找到合适的答案。 最具预防性的长期方法是在宣称的位置初始化所有指针,更改代码以使用适当的智能