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Construct `std::span<T>` from `const std::vector<T>&`
01/19/2025 by trexxet
Consider the following code: std::vector foo = some_generator_function(); std::span bar {foo}; /* Wrapper for C API that uses bar->data() and bar->size_bytes() * if bar != nullptr, guaranteed not to change any data in bar. * In some cases bar is constructed from a const C array. */ do_smth (&bar); This […]
Is the transition from Embedded Software Engineering into ML/AI too big? [closed]
01/19/2025 by tadm123
I have a background mostly in low level embedded programming, the language that I know the most is C++ by far, then C and Python. Recently I'd gotten into my university's PhD program and thinking of pursuing AI/ML for Biomedicine, I know that Python is mostly used for AI in […]
Eigen writing a function that takes all complex matrices as inputs?
01/19/2025 by Redcrazyguy
I'm trying to write a function for the Kronecker product which takes all the various types of complex matrices (to start), e.g. I can put in a MatrixXcf and a Matrix2cf and it will output the Kronecker product of the two as a MatrixXcf, but I'm running up against a […]
Linker not finding openSSL defines, but finding files when linking in g++ [duplicate]
01/19/2025 by ThatOneKaiser
I'm trying to compile a basic client in c++ using OpenSSL. I have it downloaded and after including it, VSCode and the compiler are recognizing the files(in this case the ssl.h and err.h files). However, when running the compilation, it breaks and doesn't recognize the references within the files. OpenSSl […]
Starting a thread from within a class
01/19/2025 by Richard Klosinski
I needed to create a few threads in C++ and wrote this a few years ago. Im not sure why I created the static cast to spawn the task, but I remember it was the only way I could make the thread in a class. Can anyone please help me […]
Is there a way to link C++ to musl?
01/19/2025 by DarkAtom
I installed the musl-tools package on Ubuntu, which comes with a musl-gcc wrapper for GCC that automatically links C programs to musl instead of glibc. There is, however, no equivalent musl-g++, or anything like that. Here's the program I'm trying to compile: #include int main() { std::cout
CODE IS SHOWING RUNTIME ERROR EVEN THOUGH IT HAS NO ERROR.SUGGEST FIXES [closed]
01/19/2025 by Aditya Barmola
LEETCODE 2035: class Solution { public: int f(vector& nums,int index, int size,int sum,int t,vector&dp){ if(size==nums.size()/2) return abs(t-(2*sum)); if(index>=nums.size()) return INT_MAX; if(dp[index][sum]!=-1) return dp[index][sum]; int take=f(nums,index+1,size+1,sum+nums[index],t,dp); int nottake=f(nums,index+1,size,sum,t,dp); return dp[index][sum]=min(take,nottake); } int minimumDifference(vector& nums) { int t=0; int sum1=0; for(int i=0;i
child button not functioning
01/19/2025 by mal
So basically there is a button, a main window (hwnd), static control (hpage1) and window procedure of hwnd (WndProc). if button's parent is hwnd everything works fine but if hpage1 is the parent I cannot detect if the button is pressed. Also, hpage1's parent is hwnd. I suppose the message […]
Is there a way to create a static array in the .data section, where its length is calculated by the size of the .bss section on the Arduino?
01/19/2025 by Logan Seeley
I'm just wondering if there is a way I can tell the compiler that I want to create a static array inside the .data section of the Arduino's SRAM, where the array's size is calculated using the size of the .bss section. It should technically be possible since the .bss […]
What does the T[1] mean in the concept is_convertible_without_narrowing?
01/19/2025 by Johan
The following concept from C++20 the complete guide (adapted from http://wg21.link/p0870), forbids narrowing conversions. E.g.: float to int (1.9f => 1). template concept ConvertibleWithoutNarrowing = requires (From&& from) { { std::type_identity_t{std::forward(from)}} -> std::same_as; }; The book uses this for a collection C that must not have narrowing conversions when adding […]

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