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keonhacai on ..I..03/07/2025
keonhacai mang đến trải nghiệm cá cược chuyên nghiệp, với hệ thống kèo cược cập nhật nhanh chóng và giao…
keonhacai5 on A Twitter03/07/2025
keonhacai5 mang đến trải nghiệm cá cược chuyên nghiệp với tỷ lệ kèo chính xác, hệ thống bảo mật cao…
natalia on ..I..03/07/2025
I love your take on this issue! You’ve explained it in a way that’s easy to follow. For others who…
Kèo nhà cái on ..I..03/07/2025
Kèo nhà cái là nơi cập nhật kèo cược nhanh chóng, chính xác, hỗ trợ người chơi đưa ra quyết…
keonhacai5 on A Twitter03/07/2025
keonhacai5 hỗ trợ người chơi phân tích kèo bóng đá chuyên sâu, giúp họ đánh giá và đưa ra lựa…

keonhacai on ..I..03/07/2025
keonhacai mang đến trải nghiệm cá cược chuyên nghiệp, với hệ thống kèo cược cập nhật nhanh chóng và giao…
keonhacai5 on A Twitter03/07/2025
keonhacai5 mang đến trải nghiệm cá cược chuyên nghiệp với tỷ lệ kèo chính xác, hệ thống bảo mật cao…
natalia on ..I..03/07/2025
I love your take on this issue! You’ve explained it in a way that’s easy to follow. For others who…
Kèo nhà cái on ..I..03/07/2025
Kèo nhà cái là nơi cập nhật kèo cược nhanh chóng, chính xác, hỗ trợ người chơi đưa ra quyết…
keonhacai5 on A Twitter03/07/2025
keonhacai5 hỗ trợ người chơi phân tích kèo bóng đá chuyên sâu, giúp họ đánh giá và đưa ra lựa…

Casting between pointer to aggregate classes with a common member and another deriving member
03/07/2025 by galinette
I have a base and derived class: struct Base { std::vector bars; std::unique_ptr fruit_ptr; } struct Derived : public Base { Foo foo; } And a template class joining an int and another object: template struct WithCounter { int counter = 0; T payload; } Is there any way I […]
Friend extern "С" function with enum return type
03/07/2025 by Xeenych Xeenych
I have to interface with a С function, but this code doesn't compile. // c_enum.h #pragma once typedef enum { val1 = 0 } c_style_enum_t; c_style_enum_t c_func(); // my_class.hpp #pragma once extern "С" { #include "c_enum.h" } class my_class { public: private: friend c_style_enum_t ::c_func(); }; Gcc prints an errror: […]
Placement new + reinterpret_cast + pointer arithmetic = UB?
03/07/2025 by Avi
Similar to the example from the std::aligned_storage page here, imagine I have the following: template class SlotArray { static_assert(!std::is_array_v); static_assert(!std::is_void_v); using StorageType = std::aligned_storage_t; public: template T* alloc(Args... args) { std::size_t index = claimIndex(); return ::new(&slots[index]) T(std::forward(args)...); } void free(T* value) { static_assert(sizeof(std::ptrdiff_t)
Using Eigen::Ref<> to pass matrix row as lvalue
03/07/2025 by Rob McDonald
I'm having trouble passing a matrix .row(i) as an lvalue reference. I think this should be solvable with Eigen::Ref, but I'm having difficulty. The large code block at the bottom of this post currently works. A profile of this code looks like this: 100% fbatch 47.1% void de_casteljau 44.8% Eigen::internal::dense_assignment_loop::run […]
Using libarchive How to find files on current directory without searching subdirectory
03/07/2025 by senthil
This example .tar file which contains the files and folders. - >Parentdir1 > Parentdir2 > file1 > file2 > directory3(It contains 10 subfolder and 5000 files) I want to find the "file2" file on tar. It recursively iterates files on "directory3" after that found "file2". I I need a solution […]
C++ nonmember binary operator with private inheritance
03/07/2025 by Topological Sort
As has been pointed out elsewhere, the community thinks C++ binary operators like == should be nonmember functions. This presents a problem for me with private inheritance. #include class Parent { public: Parent(int arg = 0) {} int member() const { return member_; } private: int member_; }; bool operator== […]
Compilation using GitHub workflow
03/07/2025 by Papus
I'm following this tutorial. I've done all the needed steps with no errors using below workflow (as shown in the tutorial): name: C/C++ CI on: push: branches: [ main ] pull_request: branches: [ main ] jobs: build-and-test: runs-on: ubuntu-latest steps: - uses: actions/checkout@v2 - name: install cppunit run: sudo apt […]
std::cout problems with specific german characters ( Ä, Ö, Ü )
03/07/2025 by Hank Gordon
I currently work on a project on a Raspberry Pi using c++. I have problems streaming german special characters to the terminal. I wrote a logger::log() function and use it inside a classmethod. If I call the logger::log() function directly in main() it works fine. If I call a certain […]
Is struct/union initialisation with pointers-to-members possible?
03/07/2025 by notgapriel
Was looking through cppreference and could not find anything similar to what I would like to use. I would like to explicitly initialise only a single member of a struct/union. For this reason I can't use the U{value1,value2} syntax (seems to be referred to as "declaration list" syntax) for structs, […]
Why does my for loop with condition i=0;i<v.size()-1 run for one iteration even when size of v is zero in C++ [duplicate]
03/07/2025 by Copper
for(int i=0;i

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