Recent questions tagged C++

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c++ - const int *p vs. int const *p - Is const after the type acceptable?

My co-worker is 0 for 2 on questions he has inspired (1, 2), so I thought I'd give him a chance ... doing it, rather that just discouraging 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++ - window border width and height in Win32 - how do I get it?

::GetSystemMetrics (SM_CYBORDER) ...comes back with 1 and I know the title bar is taller than ONE pixel :/ I also ... ... Thanks for any 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++ - Conditionally disabling a copy constructor

Suppose I'm writing a class template C<T> that holds a T value, so C<T> can be copyable only if T ... better options that I haven't considered? 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 is int typically 32 bit on 64 bit compilers?

Why is int typically 32 bit on 64 bit compilers? When I was starting programming, I've been taught int is typically ... although not by a lot... 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 cmake and netbeans play nice?

I'm working on a big project, some might say awesome. The project is being developed in c++ with cmake and ... time a sub directory is added? See Question&Answers more detail:os...

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

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330 views

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c++ - Shift image content with OpenCV

Starting from an image, I would like to shift its content upward of 10 pixels, without changing size and ... perform this operation with OpenCV? 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 access local variables from inside a C++11 anonymous function?

I'm doing a simple normalization on a vector (weights), trying to make use of STL algorithms to make the ... visible to the anonymous function? 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++ - Iterating over a vector in reverse direction

I need to iterate over a vector from the end to the beginnig. The "correct" way is for(std::vector<SomeT>: ... something that doesn't exist :) 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 IntelliSense to reliably work in Visual Studio 2008

Does anyone know how to get IntelliSense to work reliably when working in C/C++ projects? It seems to ... want a decent IntelliSense system. 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++ - Default pure virtual destructor

In C++11, we are able to declare a destructor to be auto generated: struct X { virtual ~X() = default; }; ... has an idea to solve 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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140 views

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c++ - Access index in range-for loop

I have a vector of objects and am iterating through it using a range-for loop. I am using it to print a ... inefficient. Is there a better way? 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++ - Should I use std::for_each?

I'm always trying to learn more about the languages I use (different styles, frameworks, patterns, etc). I've noticed ... asked (e.g. 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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220 views

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c++ - what is correspoding feature for synchronized in java?

synchronized in Java can guarantee safety of thread. What about C++? Thank you! See Question&Answers more detail:os...

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

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594 views

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c++ - Where does CLion store executable files?

I install the CLion on a Ubuntu 14.04. I build my first project with help CMakeLists.txt: Source file: #include ... this folder. Where is 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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191 views

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c++ - Why is a const variable sometimes not required to be captured in a lambda?

Consider the following example: #include <cstdlib> int main() { const int m = 42; [] { m; }(); / ... lambda with no capture-default specified). See Question&Answers more detail:os...

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

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220 views

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c++ - Cygwin Make bash command not found

I installed cygwin with all the packages on windows 7 64 bit. For some reason the make command is giving me an ... have to go to windows xp. See Question&Answers more detail:os...

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

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588 views

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c++ - Pedantic gcc warning: type qualifiers on function return type

When I compiled my C++ code with GCC 4.3 for the first time, (after having compiled it successfully with no ... I should leave off the const? See Question&Answers more detail:os...

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

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165 views

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c++ - Get the last element of a std::string

I was wondering if there's an abbreviation or a more elegant way of getting the last character of a string ... exist. Is there an equivalent? See Question&Answers more detail:os...

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

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229 views

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c++ - compile time polymorphism and runtime polymorphism

I noticed that somewhere polymorphism just refer to virtual function. However, somewhere they include the function ... widely accepted meaning? See Question&Answers more detail:os...

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

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165 views

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c++ - Understanding Iterators in the STL

What exactly are iterators in the C++ STL? In my case, I'm using a list, and I don't understand why you ... I have to dereference or use 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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425 views

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c++ - generate all subsets of size k from a set

I want to generate all the subsets of size k from a set. eg:-say I have a set of 6 elements, ... Hoping of an optimal solution using recursion. See Question&Answers more detail:os...

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

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219 views

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c++ - Examples for Winsock?

What do you guys recommend for a resource for winsock? I have an assignment that we have only have a few days to ... C++. Any tips or resources? See Question&Answers more detail:os...

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

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224 views

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c++ - C++11 ways of finding if a type has member function or supports operator?

There is a (seemingly) nice C++03 way of finding out if a type has a member function or operator: https:/ ... code and use only the standard. See Question&Answers more detail:os...

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

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710 views

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c++ - srand(time(0)) and random number generation

srand(time(0)) is used in C++ to help in the generation of random numbers by seeding rand with a starting ... what it exactly does? 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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243 views

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c++ - HTTPS request with Boost.Asio and OpenSSL

I'm trying to read the ticker symbol at https://mtgox.com/api/0/data/ticker.php from my C++ application ... and turned SSL verification back on. See Question&Answers more detail:os...

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

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159 views

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c++ - Finding all paths down stairs?

I was given the following problem in an interview: Given a staircase with N steps, you can go up with 1 or ... to this problem? Thanks indeed! See Question&Answers more detail:os...

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

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203 views

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c++ - STL algorithms and concurrent programming

Can any of STL algorithms/container operations like std::fill, std::transform be executed in parallel if I ... make it concurrent? 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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223 views

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c++ - Uses of pointers non-type template parameters?

Has anyone ever used pointers/references/pointer-to-member (non-type) template parameters? I'm not aware of ... will be much appreciated! See Question&Answers more detail:os...

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

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