Questions tagged [c++11]
Code that is written to the 2011 version of the C++ standard, sometimes known by its pre-publication name of "C++0x". Use in conjunction with the 'c++' tag.
1,717
questions
0
votes
0
answers
33
views
Decoupling networking management with the processing of generating messages to be sent which may need some calculation
The code snippet below is used to read/write tcp message. And the messages are sent(i.e. the void Conversation::do_write(std::string content)) by other threads ...
- 459
8
votes
2
answers
835
views
Efficient file-copying utility using threads
The task is to implement simple 2 threaded "copy" tool.
Tool should accept 2 parameters: source filename and target filename.
Copying logic should be organized with help of 2 threads.
First ...
- 181
4
votes
4
answers
1k
views
A thread-safe simple logger
Since the vprintf is not thread-safe, so I use a std::mutex.
It's a pity that there are a lot similar macros(both name and ...
- 459
8
votes
3
answers
116
views
Generic overloading bitwise functions to manipulate the enum type
Thanks to G. Sliepen, who gave me a lot very meaningful & useful advice on my implementation about overloading bit operators for a special scoped enum.
Now I have modified the code snippet to ...
- 459
4
votes
1
answer
692
views
Using builder pattern and facade pattern in real project
The code below is used to upgrade the firmware of three different types of cameras.
I am not good at design patterns. I wonder if it is suitable to use builder pattern and facade pattern here.
Since ...
- 459
2
votes
1
answer
57
views
Overloading bit operators for scoped enum
The code snippet is used to record the status of several cameras.
Since the enum class MODULE_ENABLED should not be used by the customers directly, I marked it as <...
- 459
4
votes
2
answers
188
views
A simple text editor
I just have learned the Command Pattern carefully. I try to use this pattern to implement a simple editor.
Some code may need some improvements, say the instance of ...
- 459
4
votes
1
answer
310
views
c++ quicksort pivots
Is this code for quicksort using the first index as a pivot correct?
Also if I want to use the last or middle index as a pivot how would the whole code change?
...
- 41
5
votes
1
answer
235
views
C++ extended switch for any class
Was thinking about extending the C switch beyond integers. Here is what it came to - will gladly accept any suggestions for improvement.
Note: "Any class" in the title is not quite correct - ...
- 51
4
votes
2
answers
385
views
Class for locking shared disk directory
I'm writing an application to sync files between two directories. In order to prevent simultaneous access to the shared directory from several computers, I implemented blocking of the shared directory....
3
votes
2
answers
189
views
Multithreaded disk scan
I'm writing an application to compare and sync folders on a disks. Scanning the contents of folders is performed in separate threads. I wrote a class to manage scan threads.
The main application class ...
3
votes
1
answer
125
views
std::list reimplementation for practice
I used cppreference list to implement this simplified std::list.
The CXX_STANDARD is 11.
My questions are the usual:
Is the ...
- 39
3
votes
1
answer
131
views
Improving execution time of physics, data acquisition triggering system simulation
Background
I'm attempting to write a physics simulation code, one portion of which involves simulating the triggering system of some equipment. The equipment works as follows: environmental noise (...
7
votes
1
answer
1k
views
Pet Shelter in C++
The provided code represents an implementation of a Binary Search Tree (BST) in C++, specifically tailored for a "Pet ...
4
votes
3
answers
2k
views
O(NlogN) sorting algorithms in C++
The following code is my lab which focused on implementing any 3 known sorting algorithms out there. Since the professor gave us a choice to pick any of them and compare their execution time I chose <...
3
votes
2
answers
136
views
Covid Data Base Hash Map in C++
This is a follow up question to Date Checking in C++
I have these two function prototypes:
void CovidDB::add_covid_data(std::string const COVID_FILE)
...
1
vote
2
answers
150
views
A simple String class and its special member functions
I am learning the behavior of C++'s special member function, using a naive String class as example. (The code is modified from this tutorial) Here is the ...
- 297
3
votes
1
answer
8k
views
Safely starting and stopping a thread owned by a class
If I have a class running its own thread, I almost always try to write it like the following, with the thread started by the constructor. The reason for this is that an object can never be constructed ...
- 205
5
votes
4
answers
978
views
RGB Image Utility Class
I am writing a utility class to store RGB images and do a few utility functions as a way to learn C++.
...
7
votes
2
answers
2k
views
Chess Game with GUI in C++ using SDL2
Introduction
So, I recently completed a chess game with a GUI in Python, using Pygame. Upon research, I learned that Pygame is built on SDL, and since I wanted to practice C++ more, I decided to code ...
- 469
1
vote
1
answer
76
views
Implementing function groups
I have recently decided to build an event library for the Arduino/ESP microcontrollers, the idea is simple - if an action happens, it invokes a function. In the code it requires holding a vector of ...
10
votes
3
answers
3k
views
C++ code for a simple single header logging library
I have been working out on C++ code lately just for fun and decided to make a simple logger in it. The code works fine, but it would be great if someone more knowledgeable could point out any mistakes/...
- 111
5
votes
2
answers
627
views
RAII POSIX process created by fork
By analogy with std::thread, I've written an RAII POSIX process:
...
- 205
2
votes
2
answers
223
views
Memento Pattern with abstract base classes and partial restoring only
Here I illustrate the use of the Memento Pattern to restore certain (but not all) data of a class that has data in abstract base classes. A Spellcaster has spells ...
- 1,371
4
votes
1
answer
236
views
Growable vector on the stack with fixed capacity
Implements most (if not all) applicable member functions from std::vector and std::array
Compatible with C++11, C++14, C++17, C++20
[] operator allows unchecked access, all other member functions ...
- 43
4
votes
2
answers
185
views
Dependency problem with field changes
The Observer Pattern is used here to notify changes in a Person's data. For example, when age changes, the value of can_vote() ...
- 1,371
3
votes
1
answer
3k
views
Wordle game in C++
I am a programmer who likes making clones of games. Having completed a version of Wordle in Python, I challenged myself with making a version of it in C++. This includes a solver as well (add a flag -...
- 469
0
votes
1
answer
512
views
What can I do better in my C++ serialization implementation?
I want to serialize a class Mango recursively.
...
3
votes
1
answer
126
views
Queue using circular linked list
I'm reading through Algorithms Fourth Edition by Sedgewick and doing some of the practice exercises in C++11 instead of Java. Exercise 1.3.29 is to write a Queue that uses a circular linked list, ...
- 137
4
votes
1
answer
3k
views
Timer thread implementation
I've implemented a timer thread whose job is to call functions at a certain interval. The functions may be called multiple times if their interval > 0 millisec otherwise only one time. Even if the ...
0
votes
1
answer
544
views
Count the number of objects created statically and dynamically in C++
I have written below program to count the number of static and dynamically created object of the class.
...
1
vote
0
answers
24
views
Return type-erased object to the caller, use typesafe cast in a subsequent call [closed]
Libraries might need to return "context" objects to the caller, and then require the same object in subsequent calls. In some cases, the user is not required to know what's the concrete type ...
- 11
1
vote
3
answers
2k
views
Any bettter way to achieve this lookup table?
What I need:
I need a lookup table. Once the keywords are all found, then the value of the std::unordered_map is returned.And I don't care about the sequence of the ...
- 459
2
votes
1
answer
867
views
Modify a string by identifying a substring, and replace it and the characters following it with a newly computed substring
I'm working on a string manipulation code in C++ for my internship project, where I have to find a substring within a string and essentially replace it and some characters following it with a newly ...
- 29
1
vote
1
answer
147
views
Connect Four in C++
This is a library that implements the logic of Connect Four.
There's nothing related to graphics or user input here. This library is supposed to be integrated into any environment where one could run ...
- 1,053
0
votes
1
answer
116
views
Data Wrapper Class with Automatic Saving and Locked Read/Write Accessors
This is a wrapper for a synchronized data structure that:
Saves periodically
Keeps track of dirty flag automatically (set when a write access is requested)
Maintains a lock on data
Only allows access ...
- 421
3
votes
1
answer
274
views
Lock-free, thread-safe trie container
This is a Trie data structure for mapping strings to integers or pointers in O(n) time. Based on the idea that we never delete anything from the container, we can perform concurrent read/write ...
- 421
1
vote
1
answer
402
views
Low-Latency Multithreaded Logger
My goal was to have a logger that does the blocking file I/O in a separate thread.
A few notes:
I made it a singleton rather than having a global "logger" variable, or a bunch of loggers ...
- 421
2
votes
1
answer
344
views
Leaky Bucket Algorithm with no Queue
Basic implementation of a leaky bucket, the idea is you call it by saying I will allow e.g. 5 login attempts per 60 seconds.
...
- 421
0
votes
1
answer
328
views
Decorator Pattern with member functions
Motivation: without SaveDecorator, we would have to write:
...
- 1,371
1
vote
1
answer
122
views
Memento Pattern between sister classes
The following is my usage of the Memento Pattern when one class uses the copy constructor of a sister class (a separate derived class of the base class) and wishes to revert to the previous class. ...
- 1,371
1
vote
2
answers
262
views
Simple terminal TicTacToe
Coming from JavaScript, I needed to learn C++ recently, so I thought a great way to start is to create a simple terminal-based tic-tac-toe game. I encountered some difficulties especially with multi-...
- 149
3
votes
2
answers
996
views
Accessing multiple dynamic libraries with the same extern C methods
I have multiple pre-compiled dynamic libraries that use the same extern "C" function names. The functions can behave differently for each dynamic library. ...
- 443
2
votes
1
answer
207
views
C++ template and inheritance - Generic Sqrt Decomposition
So I tried implementing a easily extendable solution for Sqrt decompostion, I deduced that only identity value, operation and block update logic change and rest of the code is same. So i created 3 ...
4
votes
2
answers
1k
views
Custom implementation to provide an immutable range of a vector without copying it
Edit: A new and improved version can be found in this question, based on the feedback!
I needed to pass a const reference to part of a std::vector without copy.
...
- 405
2
votes
1
answer
249
views
A proxy class as a generic replacement for getters and setters v2
Have you ever written proxy objects, instead of using a setter and a getter method? In that case, I'm interested in your opinion on the following design for a templated proxy.
This is a second version,...
- 2,015
3
votes
2
answers
268
views
C++11(14/17/20) Thread Management
I'm implementing something of a thread janitor in modern C++. What I've got works, and while it's not organized in the way I'd like yet, I'd like some feedback on the fundamentals. Thank you in ...
- 307
2
votes
2
answers
535
views
How to avoid excessive for loops in C++ [closed]
I have been trying to write a small test program and I was trying to think of any potential optimization I could do, especially if there is any chance to avoid some of the for loops.
The program has ...
- 31
1
vote
1
answer
506
views
Win32 UI with tabs and buttons
I am making a UI library for the fun of it, and decided to use move semantics instead of pointers with new/delete.
Everything is working, but I am not satisfied.
Given this code:
...
- 122
7
votes
2
answers
5k
views
Time duration conversion with units
I recently was asked to upgrade some C++11 code to add a feature by which the user can set a time duration from the command line of the program. The requirement was to have a default time of 1500 ms ...
- 66.5k