std – BugsFixing

October 21, 2022 visual-studio

[SOLVED] First Instance of "STD_OUTPUT_HANDLE" Identifier is Undefined

Issue I am using Visual Studio 2019, and my code uses console outputs which change colors frequently. I am including Windows.h in my code, which is the header file that contains SetConsoleTextAttributes, whereas STD_OUTPUT_HANDLE should be initialized by using namespace

August 4, 2022 string

[SOLVED] std::array<char, N> to std::string

Issue What is the best way to convert from a std::array<char, N> to a std::string? I have tried producing a template method but have had no luck. I think my C++ skills just aren’t up to scratch. Is there an

June 10, 2022 algorithm

[SOLVED] C++ Difference between std::lower_bound and std::set::lower_bound?

Issue Recently, while working on a programming problem in C++, I came across something interesting. My algorithm used a really large set and would use std::lower_bound on it a great deal of times. However, after submitting my solution, contrary to

June 9, 2022 numpy

[SOLVED] What is the difference between statistics.stdev() & numpy.std() and which is more precise?

Issue I used this dataset: lst = [81922.00557103065, 82887.70053475935, 80413.01627033792, 81708.86075949368, 82997.38219895288, 84641.50943396226, 81929.82456140351, 82632.24181360201, 77667.98418972333, 73726.47427854454, 86113.2075471698, 83232.98429319372, 79866.66666666667, 83833.74689826302, 81943.06930693069, 77898.64029666255, 77401.47783251232, 80607.59493670886, 78384.5126835781, 82608.69565217392, 80824.8730964467, 84163.70106761566, 74887.38738738738 ] Then statistics.stdev(lst) is 3096.28 and numpy.std(lst) is 3028.23. The

June 9, 2022 regex

[SOLVED] How to find substring like "N_N" in std::string like "SomeSymbolsN_NSomeSymbols" using regular expression

Issue I need to find in source string where substring must be template: <any_symbols><any_number>_<any_number><any_symbols> std::string source_sring = "SomeSymbolsN_NSomeSymbols" where N_N can be any variants. For example: 7_6, 4_2, 11_3, 1_2, … Solution For a simple regex like this you could

May 18, 2022 string

[SOLVED] C++ create string of text and variables

Issue I’m trying to do something very simple and yet, after an hour of so of searching a I can’t find a suitable answer so I must be missing something fairly obvious. I’m trying to dynamically create filenames for use

May 10, 2022 c

[SOLVED] Compile c program with access to stdlib functions, but without _start and all of the libc init functions using gcc

Issue So essentially I want to compile a c program statically with gcc, and I want it to be able to link c stdlib functions, but I want it to start at main, and not include the _start function as

April 27, 2022 file

[SOLVED] How to append to a std::fstream after you got to the end (std::fstream::eof() is true)

Issue I open a file like this (Because it’s part of an exercise and it may require overwriting the file): #include <fstream> //std::fstream. std::fstream file("file.txt", std::ios::in | std::ios::out); And let’s say I have read a file until the end (To

April 19, 2022 arrays

[SOLVED] Mean, Var, and Std

Issue The Task is You are given a 2-D array of size X. Your task is to find: The mean along axis The var along axis The std along axis Input Format The first line contains the space separated values