Questions tagged [c++]
C++ is a statically typed, free-form, multi-paradigm, compiled, general-purpose programming language. This tag should be used for any question which requires knowledge or expertise with the C++ programming language. This is a general tag which is used for any of the C++ language standards (C++98, C++11, C++17, etc.). The question should identify the compiler being used, the operating system, and which of the C++ standards is being targeted.
9,357
questions
0
votes
0
answers
28
views
Mocking hardware related library [closed]
I'm having my first attempt at test driven development using Google Test and Google Mock, writing my Arduino project. I wanted to create a common interface for my stepper motor drivers, something like ...
- 31
-2
votes
0
answers
35
views
132 Pattern convert C++ to C [closed]
Given an array of n integers nums, a 132 pattern is a subsequence of three integers nums[i], nums[j] and nums[k] such that i < j < k and nums[i] < nums[k] < nums[j].
Return true if there ...
4
votes
4
answers
2k
views
Yet another shared_ptr implementation for learning purposes
C++ shared_ptr implemented as a coding practice and learning purposes.
It uses std::shared_ptr interface.
Basic tests are included (using single header Catch 2)
Some methods are omitted to keep the ...
- 141
2
votes
2
answers
102
views
Defining hardware components structure
I'm writing firmware for my Arduino project, and I'm struggling with a clean, scalable hardware mapping structure. Initially, I had the following namespace:
...
- 31
3
votes
2
answers
586
views
Banking System in C++ [V2]
this is the second version of my BankingSystem in C++ for the first one go here: Banking System console app in C++
I did quite a lot of changes since the last version mainly spliting the User class ...
- 177
2
votes
0
answers
69
views
C++ Mock Library: Part 6
Parts
C++ Mock Library: Part 1
C++ Mock Library: Part 2
C++ Mock Library: Part 3
C++ Mock Library: Part 4
C++ Mock Library: Part 5
C++ Mock Library: Part 6
Side Note:
I will say the processes of ...
- 93.9k
4
votes
4
answers
2k
views
Banking System console app in C++
I built a banking system in C++ (still a lot of features to do but (I decided to post it here to see what can I change so I wont make those mistakes in the future).
User header and c++ files
Header
<...
- 177
1
vote
0
answers
45
views
C++ Mock Library: Part 5
Parts
C++ Mock Library: Part 1
C++ Mock Library: Part 2
C++ Mock Library: Part 3
C++ Mock Library: Part 4
C++ Mock Library: Part 5
C++ Mock Library: Part 6
Overview
So brief overview:
Part3 was the ...
- 93.9k
-1
votes
0
answers
16
views
In C++, is checking `this == nullptr` inside member functions an acceptable pattern? [migrated]
I have seen C++ classes that check the this pointer to make sure it is not nullptr before using a field.
Here is a simplified ...
- 772
8
votes
3
answers
2k
views
C++ std::optional implementation
Took a shot at implementing a subset of std::optional functionality. A lot of core features are there but some things like converting constructors, etc are missing ...
- 319
1
vote
1
answer
76
views
C++ Structural Requests System with Payload Management
First things first, I'd thank Mr. G. Sliepen and Mr. Davislor regarding their help in the previous questions (C++ System data transfer design) (C++ System data transfer design - Following 1), given ...
- 67
1
vote
0
answers
42
views
C++ Mock Library: Part 4
Parts
C++ Mock Library: Part 1
C++ Mock Library: Part 2
C++ Mock Library: Part 3
C++ Mock Library: Part 4
C++ Mock Library: Part 5
C++ Mock Library: Part 6
Description:
In part 3 I described how I ...
- 93.9k
0
votes
1
answer
43
views
Temperature of a Lennard-Jones system
Are the formulas used in getTemperature() and setTemperature() correct?
...
- 575
2
votes
1
answer
43
views
C++ Mock Library: Part 3
Parts
C++ Mock Library: Part 1
C++ Mock Library: Part 2
C++ Mock Library: Part 3
C++ Mock Library: Part 4
C++ Mock Library: Part 5
C++ Mock Library: Part 6
Define normal use case patterns:
The next ...
- 93.9k
3
votes
1
answer
54
views
Type-safe number serialization-deserialization
I have written this code for serializing and deserializing integer and floating point numbers to/from vector/array of bytes. The aim of the code is to provide a simple interface to use, but make it as ...
- 55
2
votes
1
answer
56
views
Finding the kth smallest number where all (hexadecimal) digits are different
I'm mostly trying to understand why the simpler char array mask below (to track which digits have been already used) is much ...
3
votes
1
answer
97
views
C++ Mock Library: Part 2
Parts
C++ Mock Library: Part 1
C++ Mock Library: Part 2
C++ Mock Library: Part 3
C++ Mock Library: Part 4
C++ Mock Library: Part 5
C++ Mock Library: Part 6
Removing redundant MOCK_SYS usage
After ...
- 93.9k
6
votes
1
answer
168
views
C++ Mock Library: Part 1
Parts
C++ Mock Library: Part 1
C++ Mock Library: Part 2
C++ Mock Library: Part 3
C++ Mock Library: Part 4
C++ Mock Library: Part 5
C++ Mock Library: Part 6
Note:
If you see an extra ...
- 93.9k
1
vote
2
answers
141
views
Minimalistic implementation of Leapfrog integration algorithm (2)
Please review this C++ listing of an implementation of Leapfrog integration.
This C++ listing is rewritten according to this review.
...
- 575
13
votes
3
answers
2k
views
A Simple Tetris game made with C++ and ncurses
I made a Tetris game with C++ and ncurses. The game implemented the most core rules of the game such as 7-bag system or familiar rules you know about the Tetris, but lacks some features - for example, ...
- 131
3
votes
2
answers
926
views
C++ std::any Implementation
Took a shot at implementing std::any. I think this should cover a majority of the functionality of the standard version, except there may be some missing auxiliary ...
- 319
2
votes
1
answer
89
views
Minimalistic implementation of Leapfrog integration algorithm
Please review this C++ listing of an implementation of Leapfrog integration.
Was the algorithm implemented correctly?
...
- 575
8
votes
4
answers
2k
views
Plotting the Mandelbrot set efficiently
This is my Mandelbrot set program - it includes Smooth Coloring, perodicity checks, and my approach to biomorphs.
I know of Edge Detection, but I couldn't find a simple explanation that I can ...
1
vote
1
answer
44
views
safe numeric type converter
I have written a function for casting between built in numeric types. I built it to check if the source value is within the range of the destination value, and to provide a nicely legible error if not....
4
votes
2
answers
102
views
Find largest sum not involving consecutive values
There is a question to basically find the largest sum in an array, such that no two elements are chosen adjacent to each other. The concept is to recursively calculate the sum, while considering and ...
- 43
-2
votes
1
answer
54
views
Market Portfolio Binary Search Tree [closed]
I'm trying to solve the following problem here:
First line of input contains the number of days D. The next d lines contains a character c and a number x. If c is B, then buy stock . If c is S, then ...
- 212
2
votes
2
answers
163
views
C++ std::shared_ptr implementation
Took a shot at implementing std::shared_ptr, with a thread-safe refcount and weak count. Didn't do weak_ptr, I'm doing this for ...
- 319
1
vote
1
answer
46
views
Process comma separated input and check format
I have to read console input and store data in the vector of structs. In case of any data format violation I have to print "Malformed Input" and return <...
- 375
4
votes
2
answers
176
views
A memory leak-free RAII wrapper around two raw pointers
As a practice of implementing RAII-enabled class, I prepared a class called DynamicWallet that wraps around two raw pointers. I am well aware that using smart ...
- 321
2
votes
0
answers
34
views
Reusable storage for array of objects V4
Here is a thirdfollow up on Reusable storage for array of objects, Reusable storage for array of objects V2 and Reusable storage for array of objects V3, taking into account the provided answers.
The ...
- 299
4
votes
2
answers
510
views
O(nlogn) Lexicographically minimal rotation code but tle on this particular case
Based on a small suggestion here , this code tries to find lexicographically minimal rotation (question) by successively comparing two adjacent substrings in the very left , that can potentially give ...
- 129
1
vote
0
answers
43
views
C++ registry class which manages game object, components and systems in an ECS
So this is my header file (registry.hpp):
...
- 145
2
votes
1
answer
75
views
C++ Chess Engine - Initialization of Magic Bitboard Attack Tables
I've just completed the generation of magic bitboard attack tables for bishops and rooks in my C++ chess engine.
Main Questions
The functions generateMagicNumbers()...
- 203
1
vote
1
answer
45
views
Reusable storage for array of objects V3
Here is a second follow up on Reusable storage for array of objects and Reusable storage for array of objects V2, taking into account the provided answers.
The following code should be compliant at ...
- 299
3
votes
1
answer
48
views
Reusable storage for array of objects V2
Here is a follow up on Reusable storage for array of objects, taking into account the provided answers.
The following code should be compliant at least with gcc, <...
- 299
4
votes
3
answers
234
views
C++ custom string class implementation
I recently had an interview where I was tasked with implementing a custom C++ string class without using the STL. The interviewer provided the function signatures and variable declarations, specifying ...
- 111
11
votes
2
answers
2k
views
CAT: Cat Approved TUIs
Cat
Hello everyone! I am working on this TUI framework which aims to abstract the ncurses library. I was wondering how understandable it is, and what I can improve! Any feedback is welcome!!
My ...
- 111
4
votes
1
answer
93
views
C++ custom vector class implementation
I've developed a custom vector class in C++, complete with functionalities like assignment, push_back(), emplace_back(), pop_back(), clear(), and size(). I would greatly appreciate any feedback on ...
- 111
2
votes
1
answer
35
views
Comparison of Named parameters and the Java Builder pattern in C++
OK writing a C++ wrapper on top of openSSL.
Setting up the SSL_CTX* object. There are a whole bunch of extra functions to specify functionality on how this object ...
- 93.9k
1
vote
0
answers
56
views
Binary Search Tree Universe
In the world of Binary Search Tree (BST) enthusiasts, where collecting and trading BSTs is a craze, you have a beloved BST with n nodes. In this scenario:
(a) Identifying Swapped Nodes and Common ...
- 212
4
votes
2
answers
331
views
Reusable storage for array of objects
My goal is to have a memory pool non-template class that is used to store arrays of objects.
The same memory pool object must be reusable for a different array (difference size, different type and/or ...
- 299
1
vote
1
answer
97
views
Parsing Tokens in a Toy Interpreter
I'm working on a homework writing a toy interpreter. All the expressions in this language are prefix expressions. The language has a lot of lexical tokens and I wrote code as follows:
...
- 23
5
votes
2
answers
442
views
std::chrono compatible clock using CLOCK_MONOTONIC_RAW
We're using std::chrono::steady_clock for most of our internal queues and relative timings. However, we're on a POSIX platform and ...
- 389
4
votes
2
answers
76
views
C++ Neuron Spike Raster Deserializer
Please help me establish a solid foundation for this computational neuroscience project. I'd like to make sure I'm moving forward with something reasonable before I begin tackling the more complex ...
- 43
2
votes
0
answers
70
views
1
vote
0
answers
55
views
An Updated recursive_transform Template Function Implementation in C++
This is a follow-up question for A recursive_transform_view Template Function Implementation and A recursive_transform_view Template Function which returns a view in C++. In those implementations ...
- 3,918
1
vote
1
answer
57
views
Program to find all possible legal words and their scores in a Wordfeud (or Scrabble) game
To anyone who doesn't know WordFeud, but is familiar with Scrabble, WordFeud is just a variation with different letter bonus placements.
The code below is complete and runnable. Given a WordFeud board ...
- 500
2
votes
1
answer
43
views
Find perfect and amicable numbers
I've been playing with perfect, amicable and social numbers lately, and created a class for investigating these. At present, it has functions to return the perfect and amicable numbers in a specified ...
- 70.8k
5
votes
1
answer
366
views
Print abcabc... in three threads
I want to implement the following case
Input - integer number n
Start 3 threads. The first thread prints 'a', the second prints 'b', the third prints 'c', then the ...
- 375
3
votes
1
answer
66
views
C++ Readers-Writer Lock using Asio's Strands
The locking mechanism is implemented in the class RW_Lock.
The saved_async_completion_handler structure is used in ...
- 133