Recent questions tagged C++

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c++ - How can I make Unicode iostream i/o work in both Windows and Unix-land?

Note: This is a question-with-answer in order to document a technique that others might find useful, and in ... both Windows and Unix-land? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Does it make sense to provide non-const reference getter

Sometimes I need to expose some of the class members. For example in the following example class Mechanic may ... code in such cases. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Override Close Box on Windows 10 Universal Apps UWP

I'm trying to prevent the app from being closed by clicking the Close box on the App Window. For example, having ... how to do this for Win32. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - How can I intercept dlsym calls using LD_PRELOAD?

I want to intercept application's calls to dlsym. I have tried declaring inside the .so that I am preloading ... dlsym inside loaded libdl.so? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - C++11 feature checking

How do I check for presence of individual C++0x/C++11 language features? I know Clang has a nice system ... . Has someone already done that? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Memory Allocation of Static Members in a Class

I posted a question recently: Initialization of Static Class members. Now please check this code: #include< ... since its getting defined? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Calling Excel/DLL/XLL functions from C#

I have a particular function in an Excel addin(xll). The addin is proprietary and we do not have access to ... best solution for that ? Anthony See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - VC++ LNK Errors With GLFW

I'm using VC++ 2010 to work with some OpenGL. However, it's becoming a pain. I keep getting error ... FunGLFW.lib(win32_window.obj) OpenGL Fun See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Stroustrup's Simple_window.h

I am trying to get the graphics examples to work from Stroustrup's Principles and Practices ...C++, to no avail ( ... a long and rocky road -_- See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - How to profile OpenMP bottlenecks

I have a loop that has been parallelized by OpenMP, but due to the nature of the task, there are 4 critical clauses. ... 10.04 with g++ 4.4.3 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - gurobi - Error code = 10004 Unable to retrieve attribute 'X'

I am getting an error in my c++/gurobi file: Error code = 10004 Unable to retrieve ... student_has_projects7.1 student_has_projects7.2 End See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - LINK : fatal error LNK1181: cannot open input file 'libclamav.lib'

I am using Microsoft Visual Studio 2010, and i am working on open source Clamav, my code is given below ... 'libclamav.lib' kindly guide me See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - How to Add Linux Compilation to Cmake Project in Visual Studio

Visual Studio has added lots of new features for C++ in the past year. CMake With the CMake support, I can ... a remote Linux machine? IfSoHow? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - What are "::operator new" and "::operator delete"?

I know new and delete are keywords. int obj = new int; delete obj; int* arr = new int[1024]; delete ... different from new and delete keywords? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - next_permutation for combinations or subsets in powerset

Is there some equivalent library or function that will give me the next combination of a set of values like next_permutation in does for me? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Reading binary data into struct with ifstream

I'm trying to read binary data from a file using ifstream. Specifically, I'm trying to populate this " ... two methods return different results? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Reset cursor in WM_SETCURSOR handler properly

INTRODUCTION AND RELEVANT INFORMATION: I have made an application that needs to change the look of a cursor into ... well. Thank you. Regards. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - How to print a graph in graphviz with multiple properties displayed

My question is based off of: How to print a graph with a single property displayed I am using bundled ... with its capacity and weight. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Assigning Rvalue returned from function to another Rvalue

class Test { public: int n1; }; Test func() { return Test(); } int main() { func() = Test(); ... ? Can someone explain how this syntax works? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - How to measure the time that a piece of code takes to execute?

Suppose I want to measure the time that a certain piece of code takes. For that I would normally do something ... know how they're doing it. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Can multiple threads write into a file simultaneously, if all the threads are writing to different locations?

I am writing the code in c++. Can I run into any kind of race conditions or seg-faults? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - dlopen - Undefined symbol error

I'm using dlopen to load a shared library at run time dlopen("SharedLibarary1.so", RTLD_NOW | RTLD_GLOBAL) ... for the unresolved symbol? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Returning an argument passed by rvalue reference

If I have a class A and functions A f(A &&a) { doSomething(a); return a; } A g(A a) { ... was passed either a temporary or an xvalue. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Generate Random Number Based on Beta Distribution using Boost

I am trying to use Boost to generate random numbers according to the beta distribution using C++. I have seen ... found in beta.hpp. Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - access violation in WM_PAINT not caught

To test this problem I have written a minimal windows application. If I force an access violation in the WM_PAINT ... (hWnd, &ps); break; See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Reading an XML file using QXmlStreamReader

I want to read an XML file using QXmlStreamReader, but I really don't know where the problem is. My function reads the ... << std::endl; } } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - What is the reason for a joinable std::thread not join automatically?

Sometimes it would be useful if a joinable std::thread had the hability to execute thread::join() on its ... really about std::thread itself. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - how to add proxy support to boost::asio?

In my desktop application I added access to various internet resources using boost::asio. All i do is sending ... support to my application? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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