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.
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My first implementation of a linked list in C++
This is my very first implementation of a full-fledged ADT, which could potentially be use-ready. Now, I'm still learning, therefore I would like to ask you what I can do to further improve the ...
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6
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infix_iterator code
I've previously posted this on Stack Overflow, and am considering submitting it to Boost for wider distribution, but thought perhaps it would be best to put it up here for peer review first, and see ...
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5
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Stopwatch template
It's often useful to be able to time code, for instance, to evaluate alternative approaches to the same problem. Because this is a thing I use frequently, I have created this Stopwatch templated ...
- 65.3k
2
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1
answer
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A recursive_count_if Function For Various Type Arbitrary Nested Iterable Implementation in C++
This is a follow-up question for A recursive_count Function For Various Type Arbitrary Nested Iterable Implementation in C++. Thanks to G. Sliepen's answer. Based on the mentioned suggestion, the ...
- 3,996
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8
answers
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Open, write and close a file
I have a small 10-liner function that writes some data to a file using an std::ofstream. I did not explicitly call .close() at ...
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7
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Project Euler #3 - largest prime factor
I was going through the Project Euler problem #3 and made a program to solve it. The problem is as follows:
The prime factors of 13195 are 5, 7, 13 and 29. What is the largest
prime factor of the ...
- 335
6
votes
1
answer
372
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A recursive_transform for std::vector with various return type
This is the follow-up question for A recursive_transform Function For Various Type Nested Iterable With std::variant Implementation in C++ and A get_from_variant function in C++. Thanks to G. Sliepen ...
- 3,996
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1
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Compile-time sieve of Eratosthenes
There are many instances of prime number sieve implementation both here and other places on the web, but I wanted something a little different. In particular, I wanted to create a static array of the ...
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1
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Comparing std::vector<bool> to std::vector<char>
A recent comment to an answer of mine here on Code Review brought up an interesting point. The comment was that one should use std::vector<char> over ...
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4
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C++ string Formatter
I had an uneventful afternoon, so I thought I might try and write a string formatter.
This is based on the documentation I found here.
...
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6
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1
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A Summation Function For Various Type Arbitrary Nested Iterable Implementation in C++
This is the follow-up question for A Summation Function For Arbitrary Nested Vector Implementation in C++. The following code is the improved version based on Zeta's answer. I am trying to enhance ...
- 3,996
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A Summation Function For Boost.MultiArray in C++
This is a follow-up question for
A Summation Function For Arbitrary Nested Vector Implementation In C++ and A Summation Function For Various Type Arbitrary Nested Iterable Implementation in C++. I am ...
- 3,996
3
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0
answers
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A recursive_print Function For Various Type Arbitrary Nested Iterable Implementation in C++
This is a follow-up question for A recursive_transform for std::vector with various return type and A recursive_transform for std::array with various return type. Based on these discussion about the ...
- 3,996
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votes
4
answers
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Seed std::mt19937 from std::random_device
Many people seed their Mersenne Twister engines like this:
std::mt19937 rng(std::random_device{}());
However, this only provides a single ...
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1
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A simple Thread Pool
A very simple Thread pool:
Any work added to the pool will be executed. The destructor will wait for all work to be finished before letting the threads stop. We then join all threads before letting ...
- 94.3k
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3
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Linked list implemented as classes, not imperative code
As an update to previous code I've submitted:
Improvements this time are mainly having everything moved to a class, before I plough on and add more functionality (I've come back to C++ after a few ...
- 505
9
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3
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A Summation Function For Arbitrary Nested Vector Implementation In C++
I am trying to deal with some calculations on nested vector data in C++. The nested vector data may be like std::vector<long double>, ...
- 3,996
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1
answer
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Nisse Server: Part 1 Helper Functions
Getting close to a release of generic server.
So a couple of reviews will be coming this way over the next few weeks. Stating with the lowest levels and working up to the main server. The result is ...
- 94.3k
7
votes
1
answer
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Rock-Paper-Scissors engine
Looking over Rock, Paper, Scissors. C++ from a beginning programmer prompted me to think about how I'd program this simple game in C++. The RockPaperScissors class ...
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6
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0
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C++ string Formatter Again Part-4
Previously asked here.
The code is now available on GitHub.
Since the previous review I have added unit tests.
Since it is big it will come in a couple of parts.
Part 1 | Part 2 | Part 3 | Part 4
...
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6
votes
1
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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 ...
- 94.3k
5
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1
answer
107
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A recursive_count Function For Various Type Arbitrary Nested Iterable Implementation in C++
This is a follow-up question for A Summation Function For Arbitrary Nested Vector Implementation In C++ and A Summation Function For Various Type Arbitrary Nested Iterable Implementation in C++. ...
- 3,996
3
votes
0
answers
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A recursive_count_if Function with Specified value_type for Various Type Arbitrary Nested Iterable Implementation in C++
This is a follow-up question for A recursive_count_if Function For Various Type Arbitrary Nested Iterable Implementation in C++. Thanks to Quuxplusone's answer and G. Sliepen's comments. Based on the ...
- 3,996
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1
answer
220
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A recursive_transform Template Function Implementation with std::invocable concept in C++
This is a follow-up question for A recursive_transform for std::vector with various return type, A recursive_transform Template Function with Execution Policy, A recursive_count_if Template Function ...
- 3,996
3
votes
1
answer
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A recursive_count_if Function with Automatic Type Deducing from Lambda for Various Type Arbitrary Nested Iterable Implementation in C++
This is a follow-up question for A recursive_count_if Function For Various Type Arbitrary Nested Iterable Implementation in C++ and A recursive_count_if Function with Specified value_type for Various ...
- 3,996
3
votes
1
answer
71
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A recursive_count_if Function with Unwrap Level for Various Type Arbitrary Nested Iterable Implementation in C++
This is a follow-up question for A recursive_count_if Function For Various Type Arbitrary Nested Iterable Implementation in C++, A recursive_count_if Function with Specified value_type for Various ...
- 3,996
3
votes
0
answers
339
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C++ Crypto: Part 4- Scram
Looking around for modern Crypto libraries.
Could not find anything good.
I know I probably did this all wrong so work with me here. There will be four different reviews for four structures that build ...
- 94.3k
3
votes
1
answer
107
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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 ...
- 94.3k
2
votes
1
answer
45
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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 ...
- 94.3k
2
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1
answer
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A recursive_transform Template Function with Execution Policy
This is a follow-up question for A recursive_transform for std::vector with various return type, A recursive_transform Function For Various Type Nested Iterable With std::variant Implementation in C++ ...
- 3,996
2
votes
0
answers
78
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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 ...
- 94.3k
1
vote
0
answers
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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 ...
- 94.3k
1
vote
0
answers
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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 ...
- 94.3k
38
votes
6
answers
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Parser written in PHP is 5.6x faster than the same C++ program in a similar test (g++ 4.8.5)
I'm absolutely dumbfounded by this. I was trying to demonstrate to myself how much faster C++ is than even modern PHP. I ran a simple CSV parsing program in both that have the same output. The CSV ...
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JSON Serializer
Carrying on from:
Yet another C++ Json Parser
Yet another C++ Json Parser (Recursive)
All the code is available from git hub: ThorsSerializer but only reviewing a small section here.
The idea is ...
- 94.3k
31
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2
answers
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Dynamically call lambda based on stream input
Some context: I have code that looks like this (minor issue noted here):
...
- 94.3k
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6
answers
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Conversion between enum and string in C++ class header
I have the following redundant-feeling design to convert between enums and strings regarding a class that stores enums. The ...
- 431
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votes
1
answer
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Stream that opens an HTTP GET and then acts like a normal C++ istream
Needed a quick stream to get JSON objects.
...
- 94.3k
6
votes
1
answer
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Recursive Breadth First Search for Knights Tour
This was written as an experiment in performance, based on another question here on CodeReview. Input into the algorithm is the number of squares on one edge of the chess board, the point of origin, ...
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6
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2
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A Simple Cluster Generator v0.2
[NOTE] This question can be depreciated in favor of version 0.3.
This is a code revision of a previous post and works well.
Code has been reworked to be far more clear and concise, thanks to ...
- 533
5
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2
answers
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Nisse Server: Part 2 Socket Layer
Getting close to a release of generic server.
Nisse Server: Part 1 Helper Functions
Here is the socket layer code.
This has previously been reviewed here. But there have been some changes.
Socket.h
...
- 94.3k
5
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1
answer
200
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A recursive_transform Template Function with Unwrap Level for Various Type Arbitrary Nested Iterable Implementation in C++
This is a follow-up question for A recursive_transform Template Function Implementation with std::invocable concept in C++ and A recursive_transform Template Function Implementation with ...
- 3,996
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1
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Nisse Server: Part 3 Stream Layer
Getting close to a release of generic server.
Nisse Server: Part 1 Helper Functions
Nisse Server: Part 2 Socket Layer
Here is the stream layer code.
This basically provides a ...
- 94.3k
5
votes
1
answer
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Knights Tour - Improved Refactored Recursive Breadth First Search for
The development and testing was performed on a Dell M6400 Laptop (Intel Core 2 Duo) running Centos 7, g++ compiler version 4.8.5, compiler switches -O3 -std=c++0x -D__cplusplus=201103L. (machine ...
- 23.5k
5
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1
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Overhauled tokenizer for markargs
In the previous post I've started writing a tokenizer for my imaginary programming language (which I decided to name markargs; trivia at the end of the post).
Problem definition:
Read the line and ...
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3
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1
answer
228
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std::array and std::vector Type Arbitrary Nested Iterable Generator Functions Implementation in C++
This is a follow-up question for the previous questions about recursive functions, including A Summation Function For Arbitrary Nested Vector Implementation In C++, A recursive_count_if Function For ...
- 3,996
3
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1
answer
203
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A recursive_transform Function For Various Type Nested Iterable With std::variant Implementation in C++
This is a follow-up question for A TransformAll Function For Various Type Arbitrary Nested Iterable Implementation in C++. The following code is the improved version based on G. Sliepen's answer. In ...
- 3,996
2
votes
1
answer
100
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An arithmetic_mean Function For Various Type Arbitrary Nested Iterable Implementation in C++
This is a follow-up question for A recursive_count Function For Various Type Arbitrary Nested Iterable Implementation in C++ and A Summation Function For Boost.MultiArray in C++. I am trying to ...
- 3,996
2
votes
1
answer
103
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A recursive_transform Template Function Implementation with std::invocable Concept and Execution Policy in C++
This is a follow-up question for A recursive_transform Template Function Implementation with std::invocable concept in C++ and A recursive_transform Template ...
- 3,996
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1
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invocable_traits v4
Update: there is a new version of this code: v5 is posted here
Goal: implement traits that for anything callable return its arity, return type and the argument types. Since pointers to data members ...
