Hacker News with Generative AI: C++

Understanding Memory Management, Part 4: Rust Ownership and Borrowing (educatedguesswork.org)
This is the fourth post in my planned multipart series on memory management. Part I covers the basics of memory allocation and how it works in C, and parts II and III covered the basics of C++ memory management, including RAII and smart pointers.
Programming, Memory Management, Rust, C++, C
5 points by ekr____ 8 days ago | 0 comments
How to Secure Existing C and C++ Software Without Memory Safety [pdf] (arxiv.org)
The most important security benefit of software memory safety is easy to state: for C and C++ software, attackers can exploit most bugs and vulnerabilities to gain full, unfettered control of software behavior, whereas this is not true for most bugs in memory-safe software.
Security, C++, Programming Languages
131 points by aw1621107 9 days ago | 86 comments
Taming the UB Monsters in C++ (herbsutter.com)
The C++ community broadly has a lot of hardening work well underway.
C++, Programming Languages, Software Development
87 points by ingve 9 days ago | 123 comments
Msgpack23 – A modern, header-only C++ library for MessagePack (de)serialization (github.com/rwindegger)
msgpack23 is a lightweight library that provides a straightforward approach to serializing and deserializing C++ data structures into the MessagePack format.
C++, MessagePack, Serialization, Libraries, Software
29 points by gjvc 10 days ago | 17 comments
C and C++ prioritize performance over correctness (2023) (swtch.com)
The original ANSI C standard, C89, introduced the concept of “undefined behavior,” which was used both to describe the effect of outright bugs like accessing memory in a freed object and also to capture the fact that existing implementations differed about handling certain aspects of the language, including use of uninitialized values, signed integer overflow, and null pointer handling.
Programming Languages, Software Development, C, C++, Standards
93 points by endorphine 11 days ago | 129 comments
Show HN: Hexi – Modern header-only network binary serialisation for C++ (github.com/EmberEmu)
Hexi is a lightweight, header-only C++23 library for safely handling binary data from arbitrary sources (but primarily network data). It sits somewhere between manually memcpying bytes from network buffers and full-blown serialisation libraries.
C++, Networking, Serialization, Libraries
118 points by Chaosvex 11 days ago | 45 comments
My Favorite C++ Pattern: X Macros (2023) (danilafe.com)
When I first joined the Chapel team, one pattern used in its C++-based compiler made a strong impression on me.
C++, Programming, Patterns, Software Development
131 points by ibobev 14 days ago | 76 comments
Building Node.js on Windows with Clang-cl (joyeecheung.github.io)
Recently Node.js started to support building with clang-cl on Windows.
Node.js, Windows, C++, Compilers
7 points by mpweiher 14 days ago | 2 comments
Writing your own C++ standard library from scratch (blogspot.com)
The C++ standard library (also know as the STL) is, without a doubt, an astounding piece of work. Its scope, performance and incredible backwards compatibility have taken decades of work by many of the world's best programmers. My hat's off to all those people who have contributed to it.
C++, Programming, Software Development, Computer Science
146 points by JNRowe 15 days ago | 131 comments
Shift-to-Middle Array: A Faster Alternative to Std:Deque? (github.com/attilatorda)
The Shift-To-Middle Array is a dynamic array designed to optimize insertions and deletions at both ends, offering a high-performance alternative to std::deque, std::vector, and linked lists.
Data Structures, Algorithms, Performance, C++
128 points by AttilaT 16 days ago | 118 comments
Reversing C++ Virtual Functions (alschwalm.com)
There are a few posts in various parts of the internet discussing reverse engineering C++, and these often address virtual functions to a large or small extent. However, I wanted to take some time to write about dealing with virtual functions in large, ‘enterprisy’ code-bases.
Reverse Engineering, C++, Programming
3 points by ibobev 16 days ago | 0 comments
High-Performance PNG Decoding (blend2d.com)
It's been some time I have written about a High-Performance QOI Codec, which joined other codecs offered by Blend2D library in 2024. The development of image codecs continued and now I would like to announce a new high-performance PNG codec, which is much faster than other available codecs written in C, C++, and other programming languages.
Image Processing, Performance Optimization, PNG, C++, Programming Languages
84 points by PaulHoule 17 days ago | 8 comments
C++26 Expansion Tricks (pydong.org)
P1306 gives us compile time repetition of a statement for each element of a range - what if we instead want the elements as a pack without introducing a new function scope?
C++, Programming Languages, Compilers, Optimization, Language Design
24 points by HeliumHydride 17 days ago | 38 comments
C++26 Expansion Tricks (pydong.org)
P1306 gives us compile time repetition of a statement for each element of a range - what if we instead want the elements as a pack without introducing a new function scope?
C++, Programming Languages, Compilers, Code Optimization, Metaprogramming
4 points by HeliumHydride 18 days ago | 0 comments
TLS Handshake on Sockets (C++) (medium.com)
There are numerous articles on the internet about the TLS handshake algorithm. However, many of them only provide a superficial description. In this article, we will explore a C++ implementation of a specific cipher. This source code relies solely on sockets for networking and utilizes the OpenSSL library exclusively for encryption (RSA, AES, SHA).
Cryptography, C++, Networking
6 points by paketick 18 days ago | 0 comments
C++26: Deprecating or removing library features (sandordargo.com)
In the previous article, we discussed what language features are removed from C++26. In this one, we are going to cover both language features that are finally removed after a few years of deprecation, and also those that are getting deprecated by C++26.
C++, Programming Languages, Software Development, Deprecation
46 points by pjmlp 20 days ago | 50 comments
ALP Rust is faster than C++ (spiraldb.com)
A recent HackerNews post titled Zlib-rs is faster than C was discussed in the usual way that HackerNews posts are, with one highly upvoted comment asking:
Programming Languages, Rust, C++, Performance
16 points by gatesn 22 days ago | 1 comments
Speeding up C++ code with template lambdas (lemire.me)
Let us consider a simple C++ function which divides all values in a range of integers:
C++, Optimization, Performance, Software Development, Programming
8 points by ingve 23 days ago | 1 comments
Show HN: Cppmatch – Rust-Like Pattern Matching and Error Handling for C++ (github.com/Rucadi)
A lightweight header-only Clang/GCC compatible C++ library for expressive pattern matching and error handling.
C++, Rust, Programming Languages, Software, Open Source
42 points by Rucadi 23 days ago | 9 comments
Speeding up C++ code with template lambdas (lemire.me)
Let us consider a simple C++ function which divides all values in a range of integers:
C++, Optimization, Performance, Programming, Template Lambdas
10 points by jandeboevrie 24 days ago | 2 comments
I Recreated Photoshop in C++ (f055.net)
As I’m getting older I look back on all the things I’ve done as a creative developer, and I see so many cool projects! But I never wrote down any development stories, and most of these projects, even as successful when released, got lost in time as years go by. That’s why I’m starting my new posts series „That time I” where I look back on my most interesting projects.
Programming, Software, C++, Personal Projects, Retrospectives
5 points by todsacerdoti 25 days ago | 1 comments
A Guide to Undefined Behavior in C and C++ (2010) (regehr.org)
Programming languages typically make a distinction between normal program actions and erroneous actions. For Turing-complete languages we cannot reliably decide offline whether a program has the potential to execute an error; we have to just run it and see.
C, C++, Programming Languages, Software Development, Undefined Behavior
79 points by GarethX 26 days ago | 64 comments
Show HN: VSC – An open source 3D Rendering Engine in C++ (github.com/WW92030-STORAGE)
"VSC (VOUGA-SHREINER-CANTH) Verified is A real-time 3D rendering engine written entirely using software with the intention of being portable."
Open Source, 3D Rendering, C++, Software, Gaming
101 points by NormalExisting 28 days ago | 34 comments
Understanding Memory Management, Part 3: C++ Smart Pointers (educatedguesswork.org)
This is the third post in my planned multipart series on memory management. In part I we covered the basics of memory allocation and how it works in C, and in part II we covered the basics of C++ memory management, including the RAII idiom for memory management. In this post, we'll be looking at a powerful technique called "smart pointers" that lets you use RAII-style idioms but for pointers rather than objects.
C++, Memory Management, Programming, Smart Pointers
5 points by ekr____ 28 days ago | 0 comments
How std::any Works (fluentcpp.com)
In the previous post we’ve seen a very nice technique to use value semantics with inheritance and virtual methods, which was made possible by std::any.
C++, Programming, Software Development, Data Structures
6 points by HeliumHydride 28 days ago | 0 comments
C++ creator calls for help to defend programming language from 'serious attacks' (theregister.com)
Bjarne Stroustrup, creator of C++, has issued a call for the C++ community to defend the programming language, which has been shunned by cybersecurity agencies and technical experts in recent years for its memory safety shortcomings.
C++, Programming Languages, Cybersecurity, Security
7 points by ABS 29 days ago | 1 comments
Compiling C++ with the Clang API (maskray.me)
This post describes how to compile a single C++ source file to an object file with the Clang API.
C++, Programming, Compilers
103 points by ingve 30 days ago | 20 comments
Understanding Memory Management, Part 2: C++ and RAII (educatedguesswork.org)
This is the second post in my planned multipart[1] series on memory management. In part I we covered the basics of memory allocation and how it works in C, where the programmer is responsible for manually allocating and freeing memory. In this post, we'll start looking at memory management in C++, which provides a number of much fancier affordances.
C++, Memory Management, Programming, Software Development
40 points by ibobev 31 days ago | 18 comments
Improving on std:count_if()'s auto-vectorization (nicula.xyz)
C++, Optimization, Performance, Programming, Algorithms
134 points by nicula 31 days ago | 45 comments
Investigating an argument-dependent lookup issue and working around it (microsoft.com)
C++/WinRT pull request 1225 fixed a problem with a call to invoke. What’s the problem, why did it show up all of a sudden, and what can you do if you are stuck on an older version of C++/WinRT?
C++, Software Development, Debugging, Programming, Windows
46 points by luu 33 days ago | 3 comments