Recent questions tagged C++

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c++ - Remove an array element and shift the remaining ones

How do I remove an element of an array and shift the remaining elements down. So, if I have an array, array[ ... in the least amount of code? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - How to make Visual Studio use the native amd64 toolchain

How can I get Visual Studio 2012 to use the native amd64 toolchain, rather than the default x86_amd64 cross-compiler? I ... but not in the IDE. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Why does the standard differentiate between direct-list-initialization and copy-list-initialization?

We know that T v(x); is called direct-initialization, while T v = x; is called copy-initialization, meaning ... ) do the exact same thing? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Visual Studio 2010 not autolinking static libraries from projects that are dependencies as it should be supposed to

Create a new solution with a C++ console command-line project Create a new project, a C++ static library ... It worked in Visual Studio 2008. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Capturing perfectly-forwarded variable in lambda

template<typename T> void doSomething(T&& mStuff) { auto lambda([&mStuff]{ doStuff(std::forward<T>(mStuff)); ... variable is a parameter pack? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Get a file name from a path

What is the simplest way to get the file name that from a path? string filename = "C:\MyDirectory\MyFile. ... get "MyFile". without extension. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - How to construct a std::string from a std::vector<char>?

Short of (the obvious) building a C style string first then using that to create a std::string, is there a ... string from a vector of chars? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ Vector, what happens whenever it expands/reallocate on stack?

I'm new to C++ and I'm using the vector class on my project. I found it quite useful because I can ... does the class vector solve this problem? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - What is useful about a reference-to-array parameter?

I recently found some code like this: typedef int TenInts[10]; void foo(TenInts &arr); What can you do ... think this is a duplicate question. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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556 views

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c++ - VBOs with std::vector

I've written a model loader in C++ an OpenGL. I've used std::vectors to store my vertex data, but now I ... want to solve the type error first. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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246 views

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c++ - Do current x86 architectures support non-temporal loads (from "normal" memory)?

I am aware of multiple questions on this topic, however, I haven't seen any clear answers nor any benchmark ... :_MM_HINT_NTA before the loop :( See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Technically, how do variadic functions work? How does printf work?

I know I can use va_arg to write my own variadic functions, but how do variadic functions work under the ... did not apply to the questioner See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - A good example for boost::algorithm::join

I recently wanted to use boost::algorithm::join but I couldn't find any usage examples and I didn't want to ... a container of strings? Thanks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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200 views

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c++ - Similar String algorithm

I'm looking for an algorithm, or at least theory of operation on how you would find similar text in two ... topic of similar string algorithms. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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409 views

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c++ - Can Google Mock a method with a smart pointer return type?

I have a factory that returns a smart pointer. Regardless of what smart pointer I use, I can't get Google Mock to ... 7. I'm not using CLI. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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398 views

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c++ - Can I turn unsigned char into char and vice versa?

I want to use a function that expects data like this: void process(char *data_in, int data_len); So it's just ... answer same in C and C++? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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266 views

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c++ - What is the meaning of clang's -Wweak-vtables?

I basically do not understand clang's -Wweak-vtables. Here is what I observed so far: Case one: (triggers ... not have a virtual destructor? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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320 views

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c++ - Get home directory in Linux

I need a way to get user home directory in C++ program running on Linux. If the same code works on Unix, ... my program is running by root user? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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438 views

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c++ - Converting data from glReadPixels() to OpenCV::Mat

I want to get every OpenGL frame from an animation with glReadPixels() and convert the data to OpenCV::Mat. I know ... to top. top to bottom. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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464 views

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c++ - Replacing WinMain() with main() function in Win32 programs

I searched a little bit on StackOverflow and Google but couldn't get the idea. I want to start my application with ... Do the stuff } } Thanks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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422 views

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c++ - Calling the base class constructor from the derived class constructor

I have a question: Say I have originally these classes which I can't change (let's say because they're taken from a ... Farm()... so any idea? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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570 views

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c++ - Receiving RTSP stream using FFMPEG library

I have an IPCamera on my LAN streaming video using RTSP. I have been able to capture and display it successfully ... good URL to direct me). See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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190 views

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c++ - Is there actually a reason why overloaded && and || don't short circuit?

The short circuiting behaviour of the operators && and || is an amazing tool for programmers. But why do ... technical reasoning behind this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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367 views

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c++ - error LNK2038: mismatch detected for '_ITERATOR_DEBUG_LEVEL': value '0' doesn't match value '2' in main.obj

I have read a lot of solutions to my problem but none helped. I tried clean, rebuild. Reinstalled visual 2010 ... files but also didnt help. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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279 views

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c++ - lvalue to rvalue implicit conversion

I see the term "lvalue-to-rvalue conversion" used in many places throughout the C++ standard. This kind ... prvalue is considered a conversion. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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508 views

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c++ - Linking different libraries for Debug and Release builds in Cmake on windows?

So I've got a library I'm compiling and I need to link different third party things in depending on if it ... note I'm using visual studio See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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480 views

1 answer

c++ - Is a destructor called when an object goes out of scope?

For example: int main() { Foo *leedle = new Foo(); return 0; } class Foo { private: somePointer* bar; public: ... a usable test case, I'm sorry. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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293 views

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c++ - How to print pthread_t

Searched, but don't come across a satisfying answer. I know there's no a portable way to print a pthread_t. ... How does gdb assign short tids? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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