Category "c++"

Can't use enum class as unordered_map key

I have a class containing an enum class. class Shader { public: enum class Type { Vertex = GL_VERTEX_SHADER, Geometry = GL_GEOMETRY_SHADE

Change default working directory in Qt Creator

Is it possible to change the default Working directory in Qt Creator to specified path? Or is it possible to set Working directory in .pro file? PS: I know ab

Why is memory adress getting printed instead the values of array in c+.+

When I'm trying to print the values of an array, its memory location is getting printed instead of values. What am I doing wrong? int main() { int list[3];

How to make a C++ class iterable from Python using SWIG?

I have a C++ class Collection that manages a std::vector<Element> (a private member of the class). From C++ I can iterate through the vector using the b

Beginner C++ Beverage Survey Tally

I am working on an assignment that is supposed to perform a survey tally on people's favorite beverages. Ideally it will continue asking the user to submit a fa

Skeletal mesh not rendering in UE5

I am trying to follow along with a tutorial that was designed for UE4. However, I was wanting to play around with UE5 (since it just came out). I was able to fi

Controlling Program Flow Between VB and C++

I have a program that runs from VB/Excel and executes a C++ program in the middle of it. I have two (I think related) questions: I capture the return value fr

Macro to repeat a single character multiple number of times

I am learning about macros and I want to know that whether it is possible to create a macro that repeats a given character literal a given number of times. For

What does "Symbol not found / Expected in: flat namespace" actually mean?

When I import a module I built, I get this boost-python related error: Traceback (most recent call last): File "<string>", line 1, in <module> Im

How to Upscale window or renderer in sdl2 for pixelated look?

I want this pixelated look in sdl2 for all the object in my screen

how to use shift operator in cout statement as it is overloaded

I am quite new to C++, I know that shift operator in C++ is overloaded. But as how we can do shift operation within printf statement in C can we do similar shif

QT QTest::keyclick or mouseMove seems don't work with QMenu in my case

I have a simple flow Click on QPushButton QMenu with a couple of actions appears Navigate through the QMenu using key clicks or mouse move. (Triggering actions

QWebChannel after I registered some objects I need to register a new object to the Js but it faills to call this new objects cpp functions

At some I need to register some objects with qwebchannel and futher in the application I need to register a new object to the qwebchannel. The thing is that it

Choco-solver IntVar declaration : How to declare an IntVar with two(or more) boundedDomain?

IntVar v = model.intVar("v", 1, 12, true); // or v= model.intVar("v", 20, 30, true); I want the value of IntVar v not only in [1,12] but also in [20,30] and i

transfer a 2d array from python to c++ and back

I am using python to call methods in a shared C++ library. I am having an issue converting a numpy 2D array to a C++ 2D array. I need to enable the following fu

Creating packet sniffer in c++

I have before created a simple packet sniffer using python, with the following code: import socket import os import time host = "192.168.0.164" if os.name ==

Why is the vector subscript out of range?

I'm trying to code this really simple addition program for practice. It takes in a list of inputs and stores it in a vector. Then it grabs each consecutive elem

Why is value-initialization specified as not calling trivial default constructors?

To value-initialize an object of type T means: ... — if T is a (possibly cv-qualified) class type without a user-provided or deleted default constructor,

Retrieve multiple ArrayFire subarrays from min/max data points

I have an array with sections of touching values in it. For example: 0 0 1 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 2 0 0 0 0 0 0 0 0

Why are unqualified names from nondependent base classes favored over template parameters

The C++ standard says that unqualified names from nondependent base classes are preferred over template parameters. What is the reasoning behind this? The follo