The daily ledger

llm-gemini 0.37

Release: llm-gemini 0.37 Google launched Gemini 4 Hydrogen today - the lowest cost member of the Gemini 4 family. It's actually not too far off the price of its much bigger siblings, Carbon and Argon. I'm finding Gemini…

Embedded HALs and safety

I am currently writing Rust code for a microcontroller, and I am trying to get a better understanding of how safety works here. I am also writing a blog post alongside it, so I want to be precise about it. I have the…

How Behaviour-Driven Development (BDD) Happened-airhacks.fm podcast

Subscribe to airhacks.fm podcast via: spotify| iTunes The #422 airhacks.fm episode with Daniel Terhorst-North (@tastapod@mas.to) about: Daniel Terhorst-North explains how BDD grew out of teaching TDD without the word…

Forrester Consulting Finds IntelliJ IDEA Delivered 155% ROI and Highlights Open Approach to AI

We’re excited to share Forrester’s newly released Total Economic Impact™ (TEI) study of IntelliJ IDEA, which JetBrains commissioned to understand how IntelliJ IDEA has delivered value historically and how it continues…

Node.js 27.0.0-alpha.0.1.0 (Alpha)

A Bootiful Podcast: Atomikos founder Guy Pardon on distributed transactions, data integrity, and more

Hi, Spring fans! Tired of worrying whether your data is actually correct? In this episode, we dive into the world of distributed transactions with Guy Pardon, founder of Atomikos, and unpack the technology that keeps…

Reading a golf swing from a 9-axis IMU on a TV box: the calibration notes that actually mattered

A small sensor strapped near the shaft, a TV box rendering the shot, and a player who expects the ball to go where they aimed. Six months of that taught us that the hard part is never the fusion math — it is agreeing on…

False Sharing and Cache Lines: One Padded Field, a Measurable Slowdown

Imagine two threads that never touch each other’s data. No locks, no shared variables, no contention in the code. Yet the program runs several times slower than it should. This is false sharing, and it is one of the few…

Free gold price and exchange rate API: no key, JSON

Crystal Ball Markets publishes three free JSON files: exchange rates against the US dollar for 60 currencies, the gold price in local money for 69 countries, and live quotes for 212 markets. There is no key and no…

Roman Numerals Are a Subtractive Notation: Parsing Them Backwards Is a Bug Factory

Roman Numerals Are a Subtractive Notation: Parsing Them Backwards Is a Bug Factory Roman numerals look like a simple lookup table. They are not — they are a positional system with a subtractive rule, and almost every…

Solving for the Rate: Why r = n((A/P)^(1/(nt)) - 1) Breaks in Real Code

Solving for the Rate: Why r = n((A/P)^(1/(nt)) - 1) Breaks in Real Code You rarely need to quote an interest rate. You need to back one out of a number you already have: an advertised APY, a loan's effective cost, a…

Loan Payment Math: The Fixed-Payment Formula and the Five Bugs Around It

Loan Payment Math: The Fixed-Payment Formula and the Five Bugs Around It The fixed-payment loan formula is one of the most reproduced snippets on the internet, and most copies are subtly wrong in the same three places:…

I Built a Cheapest Fuel Station Map from Spanish Open Data

Spain publishes the price of every public fuel station as open data. The feed is refreshed every 30 minutes, contains roughly 11,500 stations and needs no API key. That sounded like a good small project: download the…

Writing a forex position size calculator in JavaScript: the pip value bugs

Most forex position size calculators online are one formula: lots = risk / (stop_pips × pip_value) That formula is right. The bugs live in the two inputs nobody explains: the pip value, and what you do with the number…

Free OpenAI-compatible LLM APIs in 2026: how to switch `base_url` in Python and JS

Free OpenAI-compatible LLM APIs in 2026: how to switch base_url in Python and JS You do not need a new SDK for every free LLM API. If a provider documents an OpenAI-compatible endpoint, the official Python and…

I built a tool that films websites being built, commit by commit

I wanted coding videos that people who don't code could enjoy too. Most "speed coding" videos are a sped-up screen recording: lots of scrolling, a terminal, then a website appears at the end. Non-developers have no idea…

Сколько стоит сайт в 2026 году: честные цифры от веб-студии

Каждый месяц к нам в студию приходят с одним и тем же вопросом: «Сколько стоит сайт?» Самый частый ответ — «зависит от задач», и никого он не устраивает. Поэтому решили честно: вот реальные диапазоны цен на 2026 год и…

How to connect with MERN stack developers community? can anyone help me ?

QR codes for print: the module math behind "make it bigger"

"The QR code doesn't scan" is almost never a bug in the generator. It's usually a print size problem, and print size is simple math once you know what a QR code is made of. Here's the math, with numbers from the qrcode…

RAG Retrieval Lost 40 Points When Distracting Passages Grew to 2.68M

A reproducible test of BM25, embeddings, and parent documents shows why author-written evals overrate search, and why answer position in context matters. The post RAG Retrieval Lost 40 Points When Distracting Passages…