Every iOS app I've shipped over the last nine years started the same way: a Rails developer with a great web app, users who want it in the App Store, and weeks spent on Xcode, signing certificates, and Swift boilerplate that has nothing to do with the actual product.
If there's one universal experience with AI-powered code development tools, it's how they feel like magic until they don't. One moment, you're watching an AI agent slurp up your codebase and deliver a remarkably sharp analysis of its architecture and design choices. And the next, it's spamming the console with "CoreCoreCoreCore" until the scroll-back buffer fills up and you've run out of tokens.
Which Algorithm Is This? If you step back, this maps almost perfectly to the Top K Frequent Elements problem.We usually solve it for integers in a list. Here, the "elements" are audience profiles age and body-type combinations. First, define what an audience profile looks like: case class Profile(age: Int, height: Int, weight: Int) What we want is a function like this:
Coding is simply the act of giving instructions to a computer. Those instructions are written in programming languages that follow specific rules, but at a beginner level, the focus is not on perfection or complexity. It is on learning how to think through problems step by step. Learning to code helps you: understand how websites and applications work break problems into smaller, manageable pieces think logically and clearly about processes build confidence through hands-on creation develop skills that transfer across many roles
React tutorial: Get started with the React libraryDespite the endless churn of new frameworks, React remains the quintessential reactive engine. This updated guide walks you through the fundamentals of React development, including a This is Spinal Tap variant on the canonical counter application. Sometimes, your components just need to go to 11.
OpenAI has introduced ChatGPT Health, a dedicated section inside ChatGPT focused entirely on personal health. It's more than a themed chat - users can discuss symptoms, interpret lab results, track metrics over time, and get clear explanations of medical terms. A key feature is integration with health and fitness services. Users can connect Apple Health, MyFitnessPal, and similar apps so the AI can analyze sleep, activity, nutrition, and wellness trends.
The core idea is three separate attribute layers: inputs (what comes in), internals (working state), and outputs (what goes out). Each is a distinct declaration with its own namespace and type checking. Combined with declarative make calls that define action order, the data flow through a service is visible at a glance: class Payments::Process < ApplicationService::Base input :payment, type: Payment internal :charge_result, type: Servactory::Result output :payment, type: Payment make :validate_status! make :perform_request! make :handle_response! make :assign_payment
Anthropic has launched Claude Sonnet 4.6, an update to the company's hybrid reasoning model that brings improvements in coding consistency and instruction following, Anthropic said. Introduced February 17, Claude Sonnet 4.6 is a full upgrade of the model's skills across coding, computer use, long-context reasoning, agent planning, design, and knowledge work, according to Anthropic. the model also features a 1M token context window in beta.
Logo is a programming language designed in the 60s. Its most famous feature is turtle graphics: the programmer controls the "turtle" (cursor) with instructions like forward, left, right, repeat and the turtle leaves a 'trace' on the screen. Today we'll build a compact, single-file logo interpreter in about 100 lines of pure JavaScript. To keep the code short, we'll only implement the four instructions above, plus color_cycle (not part of the standard Logo) that cycles through 36 HSV hues.
The project behind this post is intentionally a bit over-engineered - in the "let's see what breaks when things grow" sense. That's by design. While a simple recipe example could easily be modelled with plain strings and numbers, cookbook explores more advanced, real-world concerns: extensibility, customisation, validation, and precise handling of numeric values, including floating-point quantities. The recipe domain is just a familiar, low-stakes vehicle for discussing these deeper ideas.
port-killer A powerful cross-platform port management tool for developers. Monitor ports, manage Kubernetes port forwards, integrate Cloudflare Tunnels, and kill processes with one click. Features: 🔍 Auto-discovers all listening TCP ports ⚡ One-click process termination (graceful + force kill) 🔄 Auto-refresh with configurable interval 🔎 Search and filter by port number or process name ⭐ Favorites for quick access to important ports 👁️ Watched ports with notifications 📂 Smart categorization (Web Server, Database, Development, System)
One of my oldest open-source projects - Bob - has celebrated 15 a couple of months ago. Bob is a suite of implementations of the Scheme programming language in Python, including an interpreter, a compiler and a VM. Back then I was doing some hacking on CPython internals and was very curious about how CPython-like bytecode VMs work; Bob was an experiment to find out, by implementing one from scratch for R5RS Scheme.
Using AI to help download photos so we can consolidate all our images into one place. Over the years, [Audrey](https://audrey.feldroy.com) and I have accumulated photos across a variety of services. Flickr, SmugMug, and others all have chunks of our memories sitting on their servers. Some of these services we haven't touched in years, others we pay for but rarely use. It was time to bring everything home.
Structural pattern matching excels at... matching the structure of your objects! For the two examples in this article, we'll be using a number of dataclasses that you can use to build abstract Boolean expressions: from dataclasses import dataclass class Expr: pass @dataclass class And(Expr): exprs: list[Expr] @dataclass class Or(Expr): exprs: list[Expr] @dataclass class Not(Expr): expr: Expr @dataclass class Var(Expr): name: str
