Our great sponsors
draft | serenity | |
---|---|---|
24 | 240 | |
5,523 | 28,555 | |
1.0% | 2.9% | |
9.6 | 10.0 | |
4 days ago | 2 days ago | |
TeX | C++ | |
- | BSD 2-clause "Simplified" License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
draft
-
C++23: The Next C++ Standard
I should have said the "latest standard", not "spec", if we're being technical. But EVERY bit of official material is very clear about asserting that C++23 is still a preview/in-progress, not a standard. Saying otherwise is, strictly speaking, incorrect.
https://isocpp.org/std/the-standard
https://www.iso.org/standard/79358.html
https://github.com/cplusplus/draft/blob/main/papers/n4951.md
-
Never trust a programmer who says they know C++
[3] https://github.com/cplusplus/draft/releases/tag/n4917
*This is a joke, but only barely so.
-
How to become a C++ Chad ?
pdf
-
Why is the token "designator brace-or-equal-initializer" not defined in the C++ 20 standard document?
I'm currently going through Annex A of C++20, but I can't find the definition of "designator brace-or-equal-initializer", and couldn't find much formal information on it in an obvious way. The newest source on [decl] (https://github.com/cplusplus/draft/blob/main/source/declarations.tex) also doesn't seem to have it. Am I missing anything, or is this a missing definition in the standard grammar?
-
Can sanitizers find the two bugs I wrote in C++?
> I don't have a copy of the standard at hand, can anyone quote the relevant section?
The C++ (draft) standard is on GitHub! [0] Compiling it needs Perl and some LaTeX packages, but is reasonably straightforwards otherwise. In addition, links to specific draft standards can be found on cppreference [1].
But anyways, in the first C++20 post-publication draft (N4868), the wording you're interested in is in multiple sections. Section 22.2.3 Sequence Containers [sequence.reqmts] has Table 78: Optional sequence container operations [tab:container.seq.opt] (starting on page 815), which states that a precondition of pop_back() is that empty() returns false. Section 16.3.2.4 Detailed Specifications [structure.specifications] (page 481) states:
> Preconditions: the conditions that the function assumes to hold whenever it is called; violation of any preconditions results in undefined behavior.
Therefore, calling pop_back() on an empty vector results in undefined behavior.
> Is this something that in practice is implemented in different (exception-throwing) ways?
Based on a quick glance at the major implementations (libc++ 15.0.7 at [2], MSVC at [3], libstdc++ at [4]), it looks like asserts are used. Whether those result in exceptions probably depends on whether the asserts are compiled in in the first place and how they are implemented, but it's definitely not a guaranteed exception.
[0]: https://github.com/cplusplus/draft
[1]: https://en.cppreference.com/w/cpp/links
[2]: https://github.com/llvm/llvm-project/blob/llvmorg-15.0.7/lib...
[3]: https://github.com/llvm/llvm-project/blob/8dfdcc7b7bf66834a7...
[4]: https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=libstdc%2B%2B-v3...
-
How does Rust handle bounds checks that are incorrect in C/C++ due to signed integer conversion?
Which standard specifically are you quoting there? I checked an old and a new C++ draft in https://github.com/cplusplus/draft/tree/main/papers, and in neither one did 6.3 have anything like that.
-
Rust and C++
https://github.com/cplusplus/draft/releases/download/n4917/n4917.pdf (page 1, chapter 1 scope):
-
WG21, aka C++ Standard Committee, October 2022 Mailing
PRs for C++ are at https://github.com/cplusplus/draft But the discussion for a PR is via https://isocpp.org/std/submit-a-proposal
-
My programming language history
C/C++
-
How to overload function parameter to accept either raw pointer or c-array
By the way, https://github.com/cplusplus/draft/releases/tag/n4910 , says
serenity
-
Why does part of the Windows 98 Setup program look older than the rest?
SerenityOS replicates that look and feel. It is also implemented in a dialect of C++ that adheres to some of the good parts of C++98: https://serenityos.org
- SerenityOS
-
XZ: A Microcosm of the interactions in Open Source projects
One example of a useful technique
https://serenityos.org/ apparently only makes source code available. There are no binary images of the OS to install
I think Andreas said this functions like a little test -- if you're not willing to build it from source, then you probably wouldn't be a good contributor anyway.
---
Likewise, my shell project provides source tarballs only, right now - https://www.oilshell.org/release/0.21.0/
It is packaged in a number of places, which I appreciate. That means some other people are willing to do some work.
And they provide good feedback.
I would like it to be more widely available, but yeah I definitely see that you need to "gate" peanut gallery feedback a bit, because it takes up a lot of time.
Of course, it's a tricky balance, because you also want feedback from casual users, to make the project better.
-
Fuzzing Ladybird with tools from Google Project Zero
Indeed, given the existence of `JS::NonnullGCPtr`, `JS::GcPtr` intentionally corresponds to a nullable pointer, so it seems dangerous to convert one to a reference without a null-check.
That said, a naive code search finds what *may* be more cases of this pattern:
https://github.com/search?q=repo%3ASerenityOS%2Fserenity+%2F...
Eg: https://github.com/SerenityOS/serenity/blob/a68b134e6dea5065... -> https://github.com/SerenityOS/serenity/blob/a68b134e6dea5065...
In some of those search results, it is fine because there is a preceding null-check, and obviously I know nothing about this code other than this naive search result, but perhaps it would be prudent to vet all of them.
-
The Ladybird Browser Project
It is a SerenityOS project. You can find the answer to that question in their primary project's FAQ[1].
1. https://github.com/SerenityOS/serenity/blob/master/Documenta...
-
Sane C++ Libraries
https://github.com/SerenityOS/serenity
The best way to write proper exception free C++ is not to use the C++ Standard Library.
-
Serenum: OS from scratch to save computers [video]
I initially confused it with Serenity OS prior to watching the video: https://github.com/SerenityOS/serenity
-
Ask HN: What side projects landed you a job?
My contributions to SerenityOS[0] helped me get my current job. My team lead (who was also my interviewer) was interested in what I did since I listed some of it in my CV, and I showed him some PRs I made and explained what went into each of them. It was really exciting because I didn't have professional experience with low-level development, and basically got the job due to hobby programming.
[0]: https://github.com/SerenityOS/serenity/pulls?q=is%3Apr+autho...
- SerenityOS – a love letter to '90s user interfaces with a custom Unix-like core
-
Bring garbage collected programming languages efficiently to WebAssembly
Definitely not "literally impossible", just a great deal of work. https://github.com/SerenityOS/serenity/tree/master/Ladybird
What are some alternatives?
team - Rust teams structure
Chicago95 - A rendition of everyone's favorite 1995 Microsoft operating system for Linux.
LLVMSharp - LLVM bindings for .NET Standard written in C# using ClangSharp
rust-raspberrypi-OS-tutorials - :books: Learn to write an embedded OS in Rust :crab:
papers
haiku - The Haiku operating system. (Pull requests will be ignored; patches may be sent to https://review.haiku-os.org).
Asciidoctor - :gem: A fast, open source text processor and publishing toolchain, written in Ruby, for converting AsciiDoc content to HTML 5, DocBook 5, and other formats.
linux - Linux kernel source tree
cppwp - HTML version of the current C++ working paper
reactos - A free Windows-compatible Operating System
libhal - A collection of interfaces and abstractions for embedded peripherals and devices using modern C++
redox - Mirror of https://gitlab.redox-os.org/redox-os/redox