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.
1,716
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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
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2
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165
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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 ...
4
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2
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First use of std::map in factors and prime factorization program
This is from an older question of mine that I decided to revisit:
Simplifying and optimizing factors and prime factorization generator
In that question, someone suggested I use an ...
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Getting all possible letter combinations of a word
I wrote a simple algorithm for finding all possible letter combinations of a single word. I want to know if my code can be improved in any way, although I'm mostly interested in efficiency.
You can ...
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Modern Vector implementation
Please give me some feedback on my attempt at a vector. I wanted this to be the lowest level concept of a vector that I'm using, so I'm primarily concerned with speed, and I would build wrappers ...
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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 ...
- 72k
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1
answer
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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 (...
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1
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Pet Shelter in C++
The provided code represents an implementation of a Binary Search Tree (BST) in C++, specifically tailored for a "Pet ...
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3
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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 <...
- 72k
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dynamic_pointer_cast for std::unique_ptr
dynamic_pointer_cast is only implemented for std::shared_ptr. I need the same functionality for unique pointers.
The wrinkle is ...
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2
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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)
...
- 229
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Propositional Logic: Proposition Evaluator
We implement a C++ class Proposition that represents a (possibly compound) propositional logic statement made up of named atomic variables combined with the ...
- 72k
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2
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Bidirectional map based on memory manipulation
This is a bidirectional map implementation that stores the values as pairs on the heap, and uses pointer arithmetic for efficient lookup.
codepad link, may be easier to read
...
- 72k
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2
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1k
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SmallVector - std::vector like container on the stack
SmallVector is almost same as std::vector except it keeps its data inside a large array. Similar to ...
- 6,351
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2
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139
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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 ...
- 72k
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1
answer
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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 ...
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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++.
...
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3
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Inline visitor implementation for C++11
I've been looking at getting back into C++11 after a few years and came across the idea of implementing the 'inline' visitor pattern. The idea is that you can specify your visitor class locally in the ...
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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 ...
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Logarithmic random distribution satisfying RandomNumberDistribution concept
I provide logarithmic_distribution to satisfy the C++ RandomNumberDistribution concept implementing the PDF
...
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1
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1
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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 ...
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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/...
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1
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Timeout watchdog using a standby thread
The simple but generic timeout class to be used watching for network connections, user input, filesystem events, and is intended to have a very simple interface specific to only our use cases (i.e. no ...
CommunityBot
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2
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2
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myhash - library with hash functions
I had a file with 2 hash functions (DJB2, NMEA0183), written in C-like way, e.g. something like this:
...
- 72k
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2
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RAII POSIX process created by fork
By analogy with std::thread, I've written an RAII POSIX process:
...
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2
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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 ...
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C++11 Threadpool
I have developed a threadpool using the standard c++11 features and am looking for feedback.
Right now I think the implementation is pretty solid, but as I recently learned about multithreading I'm ...
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1
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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 ...
- 18.9k
4
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2
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179
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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() ...
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1
answer
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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 -...
- 72k
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1
answer
117
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Entity component system for text-based console on Windows
I have written this code base on AsciiEngine. How can I improve this code?
...
- 50.7k
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0
answers
229
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Simple Win32 console library (mimicking almighty SFML) - follow-up
I'm trying to mimic the SFML library to be suitable for text-based games. The library called MSLIB in GitHub here.
Here is a sample of the library implementation. It prints gray square onto the ...
- 72k
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3
answers
2k
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Algorithm to add all lucky numbers under [N] to a Vector
A lucky number is defined as a positive integer whose decimal representation contains only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not. I need to check ...
- 72k
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What can I do better in my C++ serialization implementation?
I want to serialize a class Mango recursively.
...
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Template Matrix Class: implemented some basic functionalities
Basically I have written a matrix class for addition, multiplication and scalar multiplication.
I need your review of the class implementation below in terms of efficiency, memory consumption and new ...
Mast♦
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A binary tree , its copy constructor and assignment operator
I implemented a binary tree in the following code. Its node's copy constructor and assignment operator should copy itself and all its descendents. Similarity a node's destructor should delete itself ...
- 72k
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votes
1
answer
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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, ...
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Parallel factorial algorithm using std::thread
This code calculates the factorial of a number on multiple threads. My issue: it is only a little bit faster than the sequential version of it (and I think I know why, I just can't find a way to solve ...
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1
answer
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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 ...
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Add two fractions or two integers using template class and overloading
Question:
Need to create three classes.
Number
Fraction
Integer
Requirements
The first class should support “display”, “==”, and “+”.
"Display" : This operation displays the Number itself in its ...
- 72k
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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.
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- 144k
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0
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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 ...
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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 ...
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2
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1
answer
570
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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 ...
CommunityBot
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1
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AEC-to-WebAssembly compiler in C++
Now that my new compiler is capable of compiling programs such as the Analog Clock in AEC, I've decided to share the code of that compiler with you, to see what you think about it.
File ...
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4
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Safe Integer Library in C++
I've designed a single-file safe integer library in C++. It catches undefined behavior prior to integer overflows or underflows and throws the respective exceptions. I intend this to be portable, to ...
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2
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C++11 Any class
This is a polymorphic wrapper capable of holding any type. (It is loosely based on boost::any)
In particular, this is useful when you want to store a ...
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1
answer
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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 ...
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1
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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 ...
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