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Newest 'reinventing-the-wheel' Questions - Code Review Stack Exchange
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Learn more about TeamsQuestions tagged [reinventing-the-wheel]
For when you know you are reinventing the wheel, but are doing it anyways. Questions with this tag involve code that is already fully implemented (such as from a library).
1,046 questions
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1
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1
answer
38
views
Implement a simple image captcha test yourself in Java and JS
First of all: I was looking for a simple image captcha solution for a website, but all I found were "Over-the-top" solutions for me. So I decided to write something to self.
I mainly use two ...
9
votes
2
answers
786
views
My shared_ptr implementation
I would like to ask for a code review of my shared_ptr<T> implementation for design, code style. Any nitpicks will extremely useful for me. The features ...
5
votes
2
answers
129
views
constexpr friendly vector with static storage and no allocation
My take 2 on constexpr friendly StaticVector.
If the value_type is trivial, it can be user in constexpr functions normally.
If the value_type is not trivial, it uses placement new / destroy and ...
7
votes
5
answers
393
views
Custom hash function as Bash script
I'm looking for a (possibly cryptographic strong) hash function in Bash with the following properties:
The input is only a string with 4 lower-case characters: aaaa to zzzz
The output should be a ...
10
votes
3
answers
2k
views
C++ std::optional implementation for tech interview
I'm preparing for entry-level C++ developer interview and decided to implement some of std:: members. Here's my implementation of std::optional. I would be grateful ...
1
vote
2
answers
135
views
Implementation of my multidict in Python
I need a code review for my implementation of my multidict in Python.
I'm not sure that my method below is implemented the best way:
...
6
votes
1
answer
216
views
Histogram of Image using std::map in C++
This is a follow-up question for An Updated Multi-dimensional Image Data Structure with Variadic Template Functions in C++ and histogram Template Function Implementation for Image in C++. Considering ...
7
votes
2
answers
672
views
histogram Template Function Implementation for Image in C++
This is a follow-up question for An Updated Multi-dimensional Image Data Structure with Variadic Template Functions in C++. I implemented histogram template ...
5
votes
1
answer
60
views
QT 6 C++ Model View View Model Graphic Photo Size Reducer Tool
This is my first attempt at using the QT portable graphic system. I need to learn QT to pursue some of the positions I am interested in.
I realize the photo size reducer problem may be getting boring, ...
9
votes
4
answers
1k
views
C++20 Singly Linked List with Iterator
Below is the code I wrote to implement a singly linked list. To keep things simple, I omitted things like copy constructor. Aside from general feedback, here are some specifics I would like addressed:
...
10
votes
4
answers
1k
views
Linear version of std::bit_ceil that computes the smallest power of 2 that is no smaller than the input integer
I am not looking for feedback on the algorithm itself, but rather on the implementation; things like modern C++20 writing, style, proper ways to test and handle the validity of input (should I be ...
4
votes
2
answers
416
views
Arena/Region Allocator in C++ (rev 2)
2nd revision of original post: Arena/Region Allocator in C++
Context, changes
Trying to get a better grasp on low-level memory management, I implemented an arena allocator in C++. It's a rough ...
9
votes
1
answer
649
views
Arena/Region allocator in C++
Update: 2nd revision on separate post: Arena/Region Allocator in C++ (rev 2)
Original Post
Trying to get a better grasp on low-level memory management, I implemented an arena allocator in C++.
It's a ...
5
votes
1
answer
76
views
Command Line Photo Size Reduction Tool - version 3
This is the third version of the photo size reduction tool for code review. The previous reviews are Resize 200 photos quickly in C++ using opencv and Photo Reduction Tool version 2 - Possible ...
7
votes
1
answer
273
views
Errors as values and Generic Option, Result types in C++
I wanted to get an in-depth view of both Templates and Concepts in C++, so I made this library. https://github.com/Hernanatn/errores--
I'd like to ask:
is this a proper use of concepts?
is the code ...
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