Hacker News with Generative AI: Code

What Is the Difference Between a Block, a Proc, and a Lambda in Ruby? (2013) (awaxman.com)
While it looks like these are all very similar, there are subtle differences that I will cover below.

Ruby, Programming Languages, Code, Development, Syntax

83 points by Tomte 5 days ago | 52 comments

LoCoDiff: Natural Long Context Code Benchmark (abanteai.github.io)
LoCoDiff is a novel long-context benchmark with several unique strengths:

Benchmarking, Software, Code, Artificial Intelligence

6 points by ja3k 15 days ago | 0 comments

What I've learned from jj (zerowidth.com)
I recently started using the Jujutsu version control system, and it’s changed how I think about working with code.

Software Development, Programming, Code, Jujutsu

217 points by eproxus 21 days ago | 136 comments

Frankenstein's `__init__` (ohadravid.github.io)
Inspired by a recent post about the woes of __init__ methods in Python, I thought I’d share the untold story of the absolute craziest __init__ I’ve come across in a production codebase.

Python, Software Development, Programming, Code, Humor

99 points by todsacerdoti 34 days ago | 69 comments

Claude Code: Best practices for agentic coding (anthropic.com)
Claude Code is a command line tool for agentic coding. This post covers tips and tricks that have proven effective for using Claude Code across various codebases, languages, and environments.

Code, AI, Programming, Tools, Best Practices

614 points by sqs 34 days ago | 257 comments

V0, Cursor, Manus, Same.dev, Lovable, Devin and Replit Agent System Full Prompts (github.com/x1xhlol)
🚀 I managed to obtain FULL official v0, Manus, Cursor, Same.dev, Lovable, Devin & Replit Agent system prompts and internal tools.

AI, Code, Programming, Tools

9 points by redbell 35 days ago | 0 comments

Simple Denoising Diffusion (github.com/utkuozbulak)
This repository contains a bare-bone implementation of denoising diffusion [1,2] in PyTorch, with majority of its code taken from The Annotated Diffusion and Phil Wang's diffusion repository.

Machine Learning, Diffusion Models, PyTorch, Open Source, Code

36 points by jvkersch 51 days ago | 0 comments

How Big Is OpenVMS? (vmssoftware.com)
This question was asked during my Boot Camp presentation last fall in Boston, and over the past 35 years dozens of times people have asked, how big is VMS? That translates into "how many lines of code are in VMS"? I thought it was time to at least make a stab at pursuing some insight into the answer. I wrote some command procedures to count the number of source lines in .B32, .B64, .C, .MAR, .M64, and .S files.

Operating Systems, Programming, Software, Code, Size

12 points by jandeboevrie 52 days ago | 0 comments

Show HN: CASCII – Put Diagrams in Your Code (cascii.app)

Programming, Code, Visualization, Tools

12 points by ftr1200 68 days ago | 4 comments

Show HN: Fork of Claude-code working with local and other LLM providers (github.com/dnakov)
Terminal-based AI coding tool that can use any model that supports the OpenAI-style API.

Code, AI Tools, OpenAI API, GitHub

177 points by npace12 80 days ago | 38 comments

DeepDive in everything of Llama3: revealing detailed insights and implementation (github.com/therealoliver)
Achieve the llama3 inference step-by-step, grasp the core concepts, master the process derivation, implement the code.

Generative AI, AI, Deep Learning, Code

222 points by therealoliver 91 days ago | 14 comments

Implementing LLaMA3 in 100 Lines of Pure Jax (saurabhalone.com)
In this post, we'll implement llama3 from scratch using pure jax in just 100 lines of code. Why jax? Because I think it has good aesthetics. Also jax looks like a NumPy wrapper but it has some cool features like xla; a linear algebra accelerator, jit, vmap, pmap etc., which makes your training go brr brr.

Machine Learning, Python, Open Source, Code

167 points by jxmorris12 94 days ago | 22 comments

Evaluating RAG for large scale codebases (qodo.ai)
In a previous post, we introduced our approach to building a RAG-based system—designed to power generative AI coding assistants with the essential context needed to complete tasks and enhance code quality in large scale enterprise environments.

Generative AI, Code, AI Assistants, Enterprise

41 points by GavCo 98 days ago | 10 comments

My Co-Founder threw away 90% of the code I wrote (ycombinator.com)
TL;DR: This is an appreciation post for all those co-founders who take our messy, hacky code, and somehow transform it into maintainable, production-ready software.

Software Development, Startups, Code, Collaboration

21 points by imaginaryspaces 106 days ago | 17 comments

Five coding hats (dubroy.com)
Early in my career, I was convinced there was “good code” and “bad code”. That you could look at something and — without knowing anything about the context — pass judgement on it.

Software, Programming, Code, Career, Opinion

66 points by azhenley 108 days ago | 1 comments

Tülu 3 405B – GPT-4o performance with open-source data, code, and recipes (twitter.com)

Open Source, AI, Performance, Code

6 points by rvnx 113 days ago | 0 comments

Yek: Serialize your code repo (or part of it) to feed into any LLM (github.com/bodo-run)
A fast Rust based tool to read text-based files in a repository or directory, chunk them, and serialize them for LLM consumption.

Rust, Code, Serialization, GitHub

205 points by mohsen1 125 days ago | 74 comments

CodeMic: A new way to talk about code (codemic.io)

Code, Programming, Software, User Interfaces

189 points by seansh 152 days ago | 58 comments

Multilspy: Building a common LSP client handtuned for all Language servers (github.com/microsoft)
This repository hosts multilspy, a library developed as part of research conducted for NeruIPS 2023 paper titled "Monitor-Guided Decoding of Code LMs with Static Analysis of Repository Context" ("Guiding Language Models of Code with Global Context using Monitors" on Arxiv).

Language Models, Code, Research, Software Development, GitHub

98 points by LakshyAAAgrawal 157 days ago | 14 comments

In C some things aren't what they seem – The Craft of Coding (wordpress.com)
In C it is possible to make up things that don’t exist. For example this can lead to operators being created when they don’t exist, at least in the eyes of the programmer. Take the “–>” operator. This operator doesn’t exist, but can function as if it does. Here is an example program:

Programming, C Programming, Software Development, Code

4 points by rbanffy 158 days ago | 0 comments

Preferring throwaway code over design docs (softwaredoug.com)

Software Development, Code, Design, Documentation

327 points by softwaredoug 160 days ago | 172 comments

Dissecting M8trix (tilde.town)
m8trix by HellMood is one of my favorite demos. It packs a pretty cool Matrix-style effect in only 8 bytes:

Code, Web Development, Demos, Computer Graphics

17 points by todsacerdoti 181 days ago | 0 comments

ChibiHash: Small, Fast 64 bit hash function (nrk.neocities.org)
If you need a small and fast 64 bit hash function that can be copy-pasted easily, then here's one that I cooked up in an hour or so: chibihash64.h.

Cryptography, Algorithms, Programming, Hash Functions, Code

104 points by thunderbong 187 days ago | 31 comments

What does f(x) mean in C++? (biowpn.github.io)
It is universally agreed that C++ is a complex language. One reason is that its syntax is highly overloaded, meaning that the same code could mean many different things. Let’s do a simple mental exersice by considering the following code:

C++, Programming, Syntax, Code, Programming Languages

6 points by linkdd 192 days ago | 1 comments

OpenCoder: A True Open-Source Approach to Code LLMs (medium.com)
OpenCoder is an open and reproducible code LLM.

Open-Source, Generative AI, Code

4 points by algoghostf 193 days ago | 0 comments

The Art of Manually Editing Hunks (kennyballou.com)
There's a certain art to editing hunks, seemingly arcane. Hunks are blocks of changes typically found in unified diff patch files, or, more commonly today, found in Git patches.

Code, Version Control, Git, Software Development

25 points by alraj 198 days ago | 18 comments

Show HN: Super Simple CRC32 Implementation (github.com/dch82)
super simple crc32 calculator written by dch82

Software, Algorithms, Code, Cryptography

14 points by dch82 206 days ago | 16 comments

Ask HN: Any AI tools that help you make sense of a large repo? (ycombinator.com)
I'm trying to understand some large codebases. Current LLMs can understand code snippets but not large repositories with their complex structures.

AI, Code, Software Development, Tools

5 points by zh2408 211 days ago | 2 comments

Smallest Self Reproducing Program (ioccc-src.github.io)
Nearly every year, one or more people would submit what they claimed was the world’s smallest self reproducing program. While the sizes of these submissions varied, a quick glance would reveal that they were too big, until this entry came along.

Programming, Code, Competition, Optimization

7 points by greggyb 214 days ago | 1 comments

Why does ++[[]][+[]]+[+[]] return the string "10"? (stackoverflow.com)
This is valid and returns the string "10" in JavaScript (more examples here):

JavaScript, Programming, Code, Puzzles, Tricky Code

32 points by downboots 228 days ago | 29 comments