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San Francisco product manager Priscilla Tina built a postcard-sending app called Postcard Press in four hours using Claude Code, launching it in December 2025. The app, which allows users to upload photos and messages fo…
The article introduces Immuto, a new Java annotation processor designed specifically for mapping Java Records, which have been stable since Java 16. Unlike existing mappers built for mutable JavaBeans, Immuto generates c…
The article explains how Power Query, a tool built into Microsoft Excel and Power BI, can be used as an efficient alternative to Python for automating web data extraction in enterprise SEO and analytics workflows. It pro…
Polsia, an AI startup that raised $30 million, was found to have fabricated its key metrics, with its actual recurring revenue being approximately $0 due to a 48% monthly churn rate. An analysis of the company's publicly…
A frontend developer documented their experience building a first Express server from scratch, explaining core concepts like route parameters, query strings, and the `req`/`res` naming convention. The article breaks down…
In 2026, the combination of supply chain attacks and stale credentials is especially dangerous because attackers exploit trusted, unrotated tokens to gain long-term access to critical systems, bypassing strong perimeter …
This article is a comprehensive guide to Git, covering everything from initial setup and configuration to advanced branching strategies. It explains Git as a distributed version control system that tracks code changes, e…
This article summarizes the most impactful features introduced in TypeScript versions 5.4 through 5.8, focusing on practical improvements for daily coding workflows. Key updates include reliable `infer` in template liter…
OpenAI is offering a salary of $295,000 to $445,000 for a safety researcher to prepare for the risks of "recursive self-improvement," where AI systems train better versions of themselves. The company aims to address pote…
The author describes building a personal, offline health record app using Gemma 4, Kilo code, and a Vite/React/SQLite stack to track health issues, expenses, and medication. The app was developed by turning a single prom…
The article describes a method to integrate SVGIcons, a search engine for SVG icons, as a custom connector within Claude AI. This allows developers to search for and discover relevant SVG icons directly within their AI c…
In this development diary entry for BagHolderAI, an AI-run crypto trading startup, the author describes how their automated grid trading bot drained its $500 paper trading budget by repeatedly buying dips without a capit…
The article provides a step-by-step guide to setting up a .NET solution with a console app, class library, and xUnit test project, then demonstrates how to install and run the Stryker mutation testing tool. It shows how …
The article describes a production pattern for implementing multi-tenant row-level security (RLS) in PostgreSQL, arguing that application-layer tenant isolation is unreliable because bugs like missing authorization check…
Creation of **llm-cost-optimizer-node**, an open-source, drop-in client wrapper for OpenAI that automatically reduces API costs by intercepting outgoing prompts, stripping unnecessary filler words (like "the" and "is"), …
Three weeks after publishing an article claiming that his CLAUDE.md file "writes itself," the author found that the file had autonomously added four new rules between April 28th and May 21st, 2026. These rules were gener…
Five practical patterns for validating LLM outputs in production, addressing common failures like malformed JSON, incorrect length, and hallucinated fields. It emphasizes using schema validation with retries and error hi…
A developer is using three AI models to plan a single software feature, then having a fourth model implement it. The process involves Opus 4.7 and GPT-5.5 independently designing a plan, Gemini 3.1 Pro auditing both and …
The author reduced their LLM API costs by 90% by implementing a self-hosted, OpenAI-compatible proxy called freellmapi, which automatically routes non-critical requests across multiple free-tier providers (such as Groq, …
PR Sentinel is an AI-assisted tool that uses Gemma 4 to analyze React and TypeScript code snippets, generating structured engineering feedback focused on maintainability, accessibility, performance, and UI quality. Inspi…