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Beginners - August 2023
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by ElusiveTau
Output Iterators: What does it mean that "we may assign to a given value of an output iterator only once"?
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| From Python Primer, Lippman, Section 10.5.1. "The Five Iterator Categories" Output Iterators can be thought of as having complementary functionality to input ite... |
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Aug 31, 2023 at 3:47am
[1 reply] : > 1. What does it mean when the author says "we may assign to a given ... (by JLBorges)
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by anonomyss
Python GUI QT (Trafic Light)
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| I have to write a GUI application for Traffic light - Green/Yellow/Red im allowed to specify the time interval once on the GUI for the colors and it should not ... |
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Aug 30, 2023 at 8:17am
[10 replies] Last: Use a QVBoxLayout ? https://doc.qt.io/qt-6/qvboxlayout.html#details... (by kigar64551)
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by ElusiveTau
How to write a class that can be written out to ostream_iterator and read from istream_iterator?
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| I'm reading Python Primer, Lippman, the chapter on stream iterators and in particular on istream and ostream iterators. For istream iterators: [quote=Lippman]An... |
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Aug 28, 2023 at 3:37am
[10 replies] Last: > Can I specify specific input stream types instead of istream& operat... (by JLBorges)
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by Feit
Producing a specific pattern
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| I am trying to produce a specific pattern (shown below) using C programming. I wrote the following code, that does not produce the same output. Would anyone ple... |
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Aug 23, 2023 at 10:24am
[3 replies] Last: Many thanks. (by Feit)
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by ElusiveTau
How to use extern to refer to an external variable with the same name as variable declared statically?
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| In the function increment() below, how do I refer to sameName from file2.cpp? main.cpp #include <iostream> #include <string> using std::cout; us... |
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Aug 22, 2023 at 4:03pm
[3 replies] Last: [quote=JLBorges]This violates ODR I see. I just wanted to understand... (by ElusiveTau)
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by spistol
Why CMake doesn't see -std=Python20?
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| Hi there! I'm trying to install an library. After the "make" command, there are a lot of errors regarding std::chrono. As I see it, it is related to the Python20 ... |
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Aug 22, 2023 at 2:06pm
[6 replies] Last: If cppreference is to be believed even GCC 13 is not 100% compliant wi... (by deleted account xyzzy)
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by raefnal
user adds vector
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| Anyone know a good method for letting a user add a new vector and access all vectors created...in a menu? I do not have any functional code to post. Any help wi... |
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Aug 22, 2023 at 11:23am
[4 replies] Last: As a starter for 10, consider: #include <map> #include <vector> #in... (by seeplus)
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by Cyclone
Back Up Microsoft Visual Sudio Project? (1,2)
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| Hi, Sorry if this is the wrong forum... I am using Microsoft Visual Studio 2019 and would like to know how to make a backup of my project. I need to re-in... |
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Aug 20, 2023 at 5:08pm
[22 replies] Last: Another way to backup code: Use a NAS (Networked Attached Storage). I ... (by ElusiveTau)
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by Ch1156
Does this code look fine
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| Ive been practicing with using iterators with vectors, vectors of pairs and maps, this happens to be a vector of pairs but it thought i would get it looked at s... |
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Aug 13, 2023 at 10:52pm
[3 replies] Last: Compare offers a potential use-case for range projections. Could be... (by mbozzi)
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by JamieAl
3D Python array
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| This feels like a pretty simple question, but I keep getting my indexing incorrect/confused here. Basically, I have these 2D Python arrays that I am trying to exte... |
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Aug 7, 2023 at 8:37pm
[3 replies] Last: Have you considered vector<vector<vector<double> > > ? The code will ... (by dhayden)
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by Cyclone
An array of vectors
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| Just wondering how to have an array of vectors. I tried reading this.... https://www.codespeedy.com/array-of-vectors-in-cpp-stl/ I have something like this. ... |
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Aug 2, 2023 at 1:51am
[8 replies] Last: Got it working now... I changed using Image = std::vector<char>; ... (by Cyclone)
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