JSON-LD Explained for Personal Websites

79 ethanhawksley 2026-06-21 19:03:15 UTC hawksley.dev Llama Share 19

The user added JSON-LD to their site to aid web crawlers and improve SEO, declaring a new script with MIME type application/ld+json. They described their webpage using JSON-LD nodes such as WebSite, Person, ProfilePage, and BlogPosting to provide metadata and improve search engine results.

Prefer duplication over the wrong abstraction (2016)

355 rafaepta 2026-06-21 17:03:15 UTC sandimetz.com Llama Share 244

The "wrong abstraction" problem occurs when code is modified to accommodate new requirements, leading to conditionals and duplicated logic, making it hard to understand and maintain. The solution is to "go back" and remove the abstraction, inlining code to make it easier to understand and add new features, rather than trying to preserve the existing code.

Beyond All Reason (Free Total Annihilation Inspired RTS)

375 mosiuerbarso 2026-06-21 12:03:15 UTC beyondallreason.info Llama Share 215

The game offers real-time simulation with fully simulated projectile ballistics and terrain deformation, allowing for diverse strategies on each map. Players can choose from over 10 unit classes to balance resource income and production for victory.

(How to Write a (Lisp) Interpreter (In Python)) (2010)

139 tosh 2026-06-21 16:03:15 UTC norvig.com GoogleT5 Share 41

This page describes how to build an interpreter for most of the scheme dialect of lisp. it uses python 3 as the implementation language, and the lambda special form is a good example of scheme syntax. if you are familiar with other languages, you might think that while or for loop would be needed, but scheme manages to do without these just fine. in which we judge lispy on several criteria: ...

Identity verification on Claude

360 bathory 2026-06-21 13:03:15 UTC support.claude.com Llama Share 323

We are implementing identity verification to prevent abuse, enforce policies, and comply with laws, using Persona Identities as our partner. Your verification data is used solely to confirm your identity and is protected by industry-standard security controls.

The minimum viable unit of saleable software

73 brandur 2026-06-21 17:03:15 UTC brandur.org Llama Share 36

The author is considering building a sustainable business around their side project River, a job queue for Go and Postgres, despite the rise of AI-powered software. They argue that while LLMs make software cheaper to build, they don't eliminate the need for human oversight and maintenance.

Show HN: CleverCrow: give tokens to your favorite projects

17 zhubert 2026-06-21 20:03:15 UTC clevercrow.io Llama Share 16

CleverCrow allows community members to fund issues they care about, and the maintainer directs the agent to implement the solution. The agent drafts a plan, iterates until approved, and implements the solution in a credential-less sandbox, with the maintainer reviewing and approving before shipping the code.

An Embedded Linux on a Single Floppy

35 modinfo 2026-06-21 17:03:15 UTC github.com/w84death Llama Share 17

FLOPPINUX is a minimal Linux distribution for old hardware, requiring 20MB RAM and 32-bit x86 CPUs. It's free, open-source, and perfect for reviving old hardware or educational purposes.

Occupancy Math on the AMD MI355X: A From-First-Principles Guide

32 skidrow 2026-06-21 16:03:15 UTC indianspeedster.github.io Llama Share 2

Occupancy is a metric that measures the number of wavefronts resident on a SIMD divided by the maximum that SIMD can hold, and it's set by whichever resource runs out first, including VGPRs, SGPRs, LDS, and workgroup/barrier slots. Maximizing occupancy is not always the goal, as it can be achieved through other means such as increasing ILP (instruction-level parallelism) which can be more ...

A 3D voxel game engine written in APL

133 sph 2026-06-21 09:03:15 UTC github.com/namgyaaal Llama Share 11

This project aims to create a voxel game using APL notation, with installation instructions for macOS and Linux. Compilation on Windows requires SDL3 dev libraries and cmake-gui, with shaders compiled using ./compile_shaders.sh.

15-minute at-home Lyme disease tick test

212 bookofjoe 2026-06-21 00:03:15 UTC bostonglobe.com Llama Share 145

LymeAlert is a 15-minute tick test that can detect Lyme disease, priced at $40 per test. It's designed to help people avoid unnecessary doctor visits and antibiotic doses by testing ticks for the disease.

Loupe – A iOS app that raises awareness about what native apps can see

492 Cider9986 2026-06-20 23:03:15 UTC github.com/mysk-research Llama Share 205

Loupe is an iOS app that shows device fingerprinting data from public APIs, helping users see what apps can quietly learn about their device. It's free and open source, with a Mac version in development.

Developers don't understand CORS (2019)

329 toilet 2026-06-21 02:03:15 UTC fosterelli.co Llama Share 248

Web developers often misunderstand how CORS works, leading to security vulnerabilities like the recent Zoom vulnerability, which was caused by bypassing CORS to access a localhost webserver. A secure implementation would involve implementing a REST API with CORS headers and a Content Security Policy to prevent unauthorized access.

Wildcard (YC W25) is hiring an applied ML engineer

0 2026-06-21 17:03:15 UTC ycombinator.com Llama Share

Wildcard is an agentic commerce optimization platform for ecommerce and retail brands. They're looking for a Founding Applied ML Engineer to help shape the product and company from the earliest stage, with expertise in AI, data, and customer problems.

Show HN: TownSquare, a tiny presence layer for websites

231 cauenapier 2026-06-20 23:03:15 UTC townsquare.cauenapier.com Llama Share 135

TownSquare is a web platform where users can interact without accounts or algorithms, sharing a virtual space. It features simple controls for movement, chat, and social interactions, creating a fun and playful online experience.

Running MicroVMs in Proxmox VE, the Easy Way

193 zdw 2026-06-21 06:03:15 UTC taoofmac.com Llama Share 33

The user created a Debian package called pve-microvm that adds QEMU's microvm machine type as a first-class managed guest in Proxmox VE, allowing for fast and isolated VMs with a custom kernel and minimal virtio-only environment. The package supports 21 guest OS types, including Linux, NetBSD, and Plan9, and provides features like sub-300ms boot times, virtio devices, and vsock CID for ...

System call instrumentation on Linux/x86‑64 using memory‑indirect calls, part I

34 matt_d 2026-06-21 15:03:15 UTC humprog.org Llama Share 13

The user is exploring ways to instrument system calls in Linux x86-64 userland without the double-trap overhead, and has been researching various approaches including instruction punning, zpoline, and E9Patch. The user has also been investigating the use of segmentation features in x86 processors to find a 2-byte form that can indirect through the local descriptor table to reach the intended ...

Proportional-Integral-Derivative (PID) controllers

77 dhorthy 2026-06-21 05:03:15 UTC en.wikipedia.org Llama Share 45

A PID controller is a feedback-based control loop mechanism used in industrial control systems to manage machines and processes with continuous control and automatic adjustment. It compares the desired target value with the actual value of the system and applies corrective actions to bring the system to the desired setpoint using proportional, integral, and derivative methods.

Cocktail Optimization, an Integer Programming Problem

13 ftgregg 2026-06-21 19:03:15 UTC bunkum.us Llama Share 2

You compared custom branch-and-bound algorithms to Google's OR Tools for vehicle routing and found OR Tools to be significantly better. Mixed integer linear programming solvers like glpk.js outperform custom algorithms for similar problems.

Djevops: Self-Host Django Easily

4 mherrmann 2026-06-21 20:03:15 UTC github.com/mherrmann Prefix Share 0

djevops is a command-line tool for deploying your Django web app to a Linux VPS. It runs and manages all necessary components (database, Redis, etc.) on your server. Unlike other tools, djevops does not use Docker. This makes it possible to "push to prod" in seconds. Compared to Ansible, djevops' specialization on Django lets you write significantly less code. The flip side is ...

Slow breathing modulates brain function and risk behavior

355 croes 2026-06-20 23:03:15 UTC cell.com Llama Share 100

Prolonged exhalation breathing can increase cardiac parasympathetic activity, leading to enhanced reward sensitivity and increased risky choices. This effect is associated with changes in brain activity in regions involved in reward processing, such as the ventromedial prefrontal cortex and precuneus.

Excessive nil pointer checks in Go

83 ingve 2026-06-21 06:03:15 UTC konradreiche.com Llama Share 63

Defensive programming in Go should focus on checking inputs, bounds, and pointers before dereferencing them, but not with nil checks that silently handle impossible states. Instead, establish invariants and model intentional optional states to ensure the system can rely on guarantees, rather than relying on fear-driven clutter with nil checks.

Burnout is real for open source maintainers

99 theanonymousone 2026-06-21 17:03:15 UTC openjsf.org Llama Share 49

Lodash creator John-David Dalton stepped back from the project due to personal reasons, then rebuilt a sustainable path forward with community support. The project now has shared responsibility and modern infrastructure to ensure long-term maintenance.

Fossil Fuels Are 40% of Freight Shipping Tonnage, but Half Its Fuel Use

120 choult 2026-06-21 15:03:15 UTC cleantechnica.com Llama Share 87

The maritime fuel problem is not about replacing fossil fuels with alternative molecules, but about reducing demand due to declining fossil cargo and electrifiable segments growing. Batteries and shore power are suited for inland shipping, ferries, and short-sea routes, reducing the need for alternative fuels.

Show HN: Pulse – Dashboard for Claude Code, approve tool calls from your phone

22 nikitadvd 2026-06-21 17:03:15 UTC github.com/nikitadoudikov Llama Share 10

Pulse is a local dashboard for Claude Code that shows spending, session context, and lets you approve tool calls from your phone. It reads session files, aggregates numbers, and provides live updates with no network calls or analytics.

Renting a sewing machine from the library

325 sohkamyung 2026-06-20 23:03:15 UTC bbc.com Llama Share 191

Finland's libraries are thriving as community service centers, offering more than just books, and promoting social inclusion and democracy. They are valued for their role in helping societies function, with over 700 libraries serving Finland's 5.6 million people.

The brain was not designed for this much bad news

338 colinprince 2026-06-21 06:03:15 UTC sciencedaily.com Llama Share 287

Humans are overwhelmed by bad news due to their natural negativity bias, which was adaptive in the past but now causes stress and fatigue. To manage news fatigue, people can contain news consumption, choose depth over volume, and identify actions they can take to feel more in control.

Two Qwen3 models on one DGX Spark: the residency math

80 devashish86 2026-06-21 11:03:15 UTC devashish.me Llama Share 36

The author set up a DGX Spark with multiple vLLM containers to serve two Qwen3 models, but faced memory issues due to incorrect gpu_memory_utilization settings. The solution involved adjusting the settings to account for CUDA framework overhead and Mamba state alignment.

Epoll vs. io_uring in Linux

246 Sibexico 2026-06-21 00:03:15 UTC sibexi.co Llama Share 59

The user discusses the differences between epoll and io_uring for handling asynchronous I/O on Linux, highlighting io_uring's efficiency and reduced syscall overhead. io_uring is recommended for modern Linux projects due to its improved performance and architectural changes.

The Commodore Callback 8020 smart flip phone

106 Audiophilip 2026-06-21 13:03:15 UTC wired.me Llama Share 91

Commodore's Callback 8020 is a smartphone with a Linux-based Sailfish OS, running essential apps without social media or browsers. It's designed for digital minimalism, with a focus on intentional use and a price starting at $500.