Recent questions tagged C++

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c++ - Accept all types as argument in function

How can I in C++ make a function accept every Object, so I can give it numbers, String or other Objects. I am ... . I hope it's more clear now! 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++ - Remove blinking underscore on console / cmd prompt

This probably something very simple, but Google doesn't seem to have the answer. Is there a simple command ... blinking underscore on and off? 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 write files to current directory instead of bazel-out

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

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c++ - STL less operator and "invalid operator<" error

I have some code that compiles fine in VS 10.0 but after inserting a few items into the Orders map below ... , MY_order_t > Orders[5]; 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++ - difference between cin.get() and cin.getline()

I am new to programming, and I have some questions on get() and getline() functions in C++. My ... queue, thus potentially causing 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++ - How to get printf style compile-time warnings or errors

I would like to write a routine like printf, not functionally-wise, but rather I'd like the routine to have ... interested in are gcc and msvc 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 change the executable output directory for Win32 builds, in CMake?

My problem is as such : I'm developing a small parser using Visual Studio 2010. I use CMake as a build ... would you do that using CMake ? 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 to do to make application Large Address Aware?

I am currently in process of making our application Large Address Aware. As experience has shown, there are ... application Large Address Aware? 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 do you draw text in DirectX 11?

In DirectX 10 you could use the font interface provided by D3DX10. In DirectX 11 you are supposed to use ... simple text with DirectX 11? 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++ - unordered_multimap - iterating the result of find() yields elements with different value

The multimap in C++ seems to work really odd, i would like to know why #include <iostream> #include <unordered_map ... a compiler or stl bug? 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++ - Priority Queue Comparison

I'm trying to declare a priority queue in c++ using a custom comparison function... So , I declare the ... but without using a class? 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++ - Multiple main CPP files in VisualStudio?

I have a sample directory of some software, which contains multiple files with multiple main functions. May I ... of some manual operations. 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 resize QMessageBox?

I have a QMessageBox which I'd like it to be bigger. It's a simple QMessageBox with two standard buttons, Ok ... size "by hand"? 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++ - How to translate the buttons in qmessagebox?

I have a QMessageBox like this: QMessageBox::question(this, tr("Sure want to quit?"), tr("Sure to quit?"), ... no place to place a tr()? 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++ - ANSI C equivalent of try/catch?

I have some C code I'm working with, and I'm finding errors when the code is running but have little info about how ... i) ); item->release(); } 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++ - Garbage Collection in C++11

I have been looking through and playing with different features of C++11, specifically in Visual Studio 2010. ... answer on its 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++ - When is the use of std::ref necessary?

Consider: std::tuple<int , const A&> func (const A& a) { return std::make_tuple( 0 , std::ref(a) ); } Is the ... .first) , e.second ); } } }; 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++ - D_WIN32_WINNT compiler warning with Boost

Not sure what to make of this error. Added -D_WIN32_WINNT=0x0501 to Visual Studio's "Command Line" ... project's Preprocessor Definitions. 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 Tail Call Optimization and RAII Co-Exist?

I can't think of a true RAII language that also has tail call optimization in the specs, but I ... the defacto TCO implementation requirements? 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 pre-increment operator gives rvalue in C?

In C++, pre-increment operator gives lvalue because incremented object itself is returned, not a copy. But in C, it gives rvalue. Why? 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 get a std::set of keys to a std::map

I was writing an algorithm this morning and I ran into a curious situation. I have two std::maps. I want to ... in boost can not be used. 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++ - OpenCV - Surf Algorithm - Giving lots of false positives

I am learning OpenCV and have started exploring the SURF Algorithm for image matching. I have created a sample image ... ptpairs ); 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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c++ - Snake Algorithm - opencv active contour - not working so well

I'm actually working on a contour detection for head side. As pictures are taken in front of a white wall, ... be very appreciated. 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++ - Using recursion and backtracking to generate all possible combinations

I'm trying to implement a class that will generate all possible unordered n-tuples or combinations given a ... for your thorough response! 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 detect file accesses in Linux?

I have a bunch of flows and data processing applications that I occasionally need to spy on, meaning I need to ... more easily are welcome too. 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++ - Library headers and #define

I wasn't sure what to search for for this one. So excuse me if this is simple. But let me outline the scenario ... for this is extra credit =D. 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++ - Permutation of String letters: How to remove repeated permutations?

Here is a standard function to print the permutations of characters of a string: void permute(char *a, int i, int ... happen? -- Thanks Alok Kr. 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++ - Difference between double pointer and array of pointers

In a normal c/c++ program we write main function as either int main(int c, char **argv) or int main( ... . Can any one explain the difference? See Question&Answers more detail:os...

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

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