Recent questions tagged C++

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c++ - How to modify content of the original variable which is passed by value?

There is an existing API function which does only allow the plugin(DLL) to receive three parameters and perform some action ... !"); return 1; } 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++ - Overriding "new" and Logging data about the caller

I'm trying to write a memory profiler and so far have been able to get my custom functions to work for ... calls on ofstream and map.insert. 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++ - rvalues and temporary objects in the FCD

It took me quite some time to understand the difference between an rvalue and a temporary object. But now the final ... have I gone insane? :) 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++ - The procedure entry point could not be located in dynamic link library

I have the following error when open my application. I'm use windows 7 32bit platform, and Qt v5.3.1 with ... know how to solve this problem. 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++ - Vector initialization with double curly braces: std::string vs int

In an answer to this question: Initializing vector<string> with double curly braces it is shown that vector< ... this difference in behavior? 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++ - Are memory orderings: consume, acq_rel and seq_cst ever needed on Intel x86?

C++11 specifies six memory orderings: typedef enum memory_order { memory_order_relaxed, memory_order_consume, memory_order_acquire, ... on x86? 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++ - Visual Studio 2010 library linking order

How do you specify, in Visual Studio 2010, the order in which library files should be linked? I have a ... then I could circumvent the problem. 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 difference between &vector[0] and vector.begin()?

This question is related with item 16 of effective stl book which states that while using vector(lets assume ... difference between the two ? 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++ - Vector constructor with two parameters is parsed as a function declaration

Consider this example: #include <iostream> #include <string> #include <vector> #include <iterator> int main() ... the second workaround 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++ - std::find Object by Member

Scenario I've run into a speedbump while using the STL with what seems like a normal scenario, simplified here: ... , and some have problems. 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++ - disable the randomness in malloc

I'm running this following simple C program: #include <stdio.h> #include <stdlib.h> int main(int argc, ... way to eliminite that randomness ? 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++ - Why can't I catch a luabind::error exception when my lua code throws an error?

When you call a LUA function from c++ and there is a runtime error LuaBind throws a luabind::error exception that you ... 5 with LuaBind 0.9.1. 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++ - SFINAE to make base template always result in error

So I'm designing a sort of my_numeric_cast function to limit the types of conversions available when using a ... expect when instantiating 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++ - Static compilation of Qt 5 fails under mingw with reference to off64_t

I tried to make static qt, and got error during mingw-make. This is text of error. staticqhttpnetworkreply. ... steps from one instructions. 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++ - Value representation of non-trivially copyable types

I'm intrigued by the following paragraph from the standard (§3.9/4 of ISO/IEC 14882:2011(E)): The object ... What is the significance of this? 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++ - Qt Designer, missing "go to slot" in context menu?

I've been watching a Qt tutorial series on YouTube, in which the author shows how to call a function, when a ... purpose? Thanks for your help. 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++ - Boost Range Library: Traversing Two Ranges Sequentially

Boost range library (http://www.boost.org/doc/libs/1_35_0/libs/range/index.html) allows us to abstract a pair of ... a range using r1 and r2? 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 select a value from a list with non-uniform probabilities?

I am looking at the k-means++ initialization algorithm. The following two steps of the algorithm give rise ... probability distribution in C++? 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++ - Any way to accomplish i++ in matlab?

Assuming that srcHoughMatrix is a 3-dimensional matrix : Instead of if (currentRadius >= MINIMUM_ALLOWED_RADIUS ) % we ... ) + 1; 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++ - cmake generate error on windows as it uses as escape seq

I have something such as this in my cmake: set(MyLib_SRC $ENV{MyLib_DIR}/MyLib.cpp) add_library(MyLibrary ... is MyLib_DIR=D:NewDevelopmentLib 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++ - Late Binding COM objects with C++Builder

We're interfacing to some 3rd party COM objects from a C++Builder 2010 application. Currently we import the ... on every single method call? See Question&Answers more detail:os...

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

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366 views

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c++ - Why this regular expression will not compile?

I would like to use regular expression from here: https://www.rfc-editor.org/rfc/rfc3986#appendix-B I am ... use it for validation though. 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++ - constexpr array and std::initializer_list

I was trying to write an compile-time valarray that could be used like this: constexpr array<double> a = ... underlying array at compile-time. 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++ - Are Vertex Array Objects supported in Android OpenGL ES 2.0 using extensions?

I'm trying to write some code that uses VAOs in C++ using the Android NDK to compile. I expect to be ... linker not including GLES2/gl2ext.h? 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++ - No matching constructor for initalization of 'ostream_iterator<int>'

for the code, why error, osteam_iterator is a template class ,why no matching constructor for initalization of ' ... ; cout << 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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425 views

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c++ - Overload ++ operator

I am trying to deal with operator overloading at the first time, and I wrote this code to overload ++ operator to ... ("pause"); return 0; } See Question&Answers more detail:os...

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

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448 views

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c++ - -9'223'372'036'854'775'808LL is unsigned

Since C++20 two's complement representation is the only representation allowed by the standard, with the guaranteed ... I not getting here? See Question&Answers more detail:os...

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

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452 views

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c++ - GCC: --whole-archive recipe for static linking to pthread stopped working in recent gcc versions

Static linking against pthread is a difficult topic on Linux. It used to work to wrap -lpthread as -Wl,-- ... allow static linking to pthread? See Question&Answers more detail:os...

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

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