無垢な仔猫の写真を集めたウェブサイトを訪問したと想像してみてください。かわいい仔猫達の写真の背後には、このウェブサイトの強大な力が隠れています。誰かがウェブサイトにアクセスすると、サイトのオーナーはその訪問者のネット上の行動に関するあらゆる情報を入手できます。その中には、銀行取引情報、SNS上の投稿やメッセージ、メール、オンラインの購買データなどが含まれます。あなたが受ける信用面や金銭面の損害はどれほどのものになるでしょうか。あなたのメッセージが流出し、銀行口座のお金が使い込まれるかもしれません。しかし幸いなことに、実際にはそのような状況は起こりません。それは、SOPとCORSのお陰なのです。 目次 Ajax（Asynchronous JavaScript And XML） インターネットがジャングルではない理由 認証情報を「含める」vs「含めない」 CORSルールの定義 クロスオリジンリ
htmxは、HTMLの属性を追加するだけで、インクリメンタル検索やインライン編集をはじめとするさまざまな動的なUI（User Interface）を実現できるJavaScriptライブラリです。SPA（Single Page Application）フレームワークのような大がかりなビルド環境を用意することなく、すでにあるサーバーサイドアプリケーションに段階的に導入できる点も大きな魅力です。 本記事では、htmxの基本的なしくみや使用方法を紹介したのち、架空のタスク管理アプリケーションを題材に、htmxで実現できるさまざまなインタラクションを紹介します。 htmxの概要 HTMLを拡張するアプローチ htmxの基本的なアイデアは、HTMLの属性を使ってサーバーとの通信およびDOM更新を宣言的に記述するというものです。 たとえば、ボタンがクリックされたらサーバーからデータを取得し、画面の一部を
To jump straight into developing your own Slack app, follow our Quickstart. You can get started right now. Hello there, fellow developer! 👋 Welcome to the Slack API documentation, the place where ideas turn into interactive apps, workflows get automated, and Slack becomes the platform that powers your workday. Our documentation on APIs, SDKs, and tools can assist you in creating apps that make wo
技術部の笹田（ko1）と遠藤（mame）です。クックパッドで Ruby (MRI: Matz Ruby Implementation、いわゆる ruby コマンド) の開発をしています。お金をもらって Ruby を開発しているのでプロの Ruby コミッタです。 本日 12/25 に、ついに Ruby 3.1.0 がリリースされました（Ruby 3.1.0 リリース ）。今年も Ruby 3.1 の NEWS.md ファイルの解説をします。NEWS ファイルとは何か、は以前の記事を見てください。 プロと読み解く Ruby 2.6 NEWS ファイル - クックパッド開発者ブログ プロと読み解くRuby 2.7 NEWS - クックパッド開発者ブログ プロと読み解くRuby 3.0 NEWS - クックパッド開発者ブログ 本記事は新機能を解説することもさることながら、変更が入った背景や苦労な
Today we’re excited to announce the release of TypeScript 5.0! This release brings many new features, while aiming to make TypeScript smaller, simpler, and faster. We’ve implemented the new decorators standard, added functionality to better support ESM projects in Node and bundlers, provided new ways for library authors to control generic inference, expanded our JSDoc functionality, simplified con
ContentsHTMLCSSWeb APIsJavaScriptWeb AppsMediaPrivacySecurityWKWebViewSafari Web ExtensionsWeb InspectorFeedbackAnd More With over 70 additions to WebKit, Safari 15.4 is packed with new web technologies, updates, and fixes. We’ve assembled a huge release as part of our commitment to web developers, and the people who use the web. This is the first big WebKit release of 2022, and we’re just getting
技術部の笹田（ko1）と遠藤（mame）です。クックパッドで Ruby (MRI: Matz Ruby Implementation、いわゆる ruby コマンド) の開発をしています。お金をもらって Ruby を開発しているのでプロの Ruby コミッタです。 昨日 12/25 に、恒例のクリスマスリリースとして、Ruby 3.2.0 がリリースされました（Ruby 3.2.0 リリース）。今年も Ruby 3.2 の NEWS.md ファイルの解説をします。NEWS ファイルとは何か、は以前の記事を見てください。 プロと読み解く Ruby 2.6 NEWS ファイル - クックパッド開発者ブログ プロと読み解くRuby 2.7 NEWS - クックパッド開発者ブログ プロと読み解くRuby 3.0 NEWS - クックパッド開発者ブログ プロと読み解く Ruby 3.1 NEWS -
REST API Design Best Practices Handbook – How to Build a REST API with JavaScript, Node.js, and Express.js
By Jean-Marc Möckel I've created and consumed many API's over the past few years. During that time, I've come across good and bad practices and have experienced nasty situations when consuming and building API's. But there also have been great moments. There are helpful articles online which present many best practices, but many of them lack some practicality in my opinion. Knowing the theory with
I often feel like javascript code in general runs much slower than it could, simply because it’s not optimized properly. Here is a summary of common optimization techniques I’ve found useful. Note that the tradeoff for performance is often readability, so the question of when to go for performance versus readability is a question left to the reader. I’ll also note that talking about optimization n
Introduction In our previous exploration, we delved into the simplicity of HTTP/0.9, a protocol that served as the web’s initial foundation. However, as the internet evolved, so did its needs. Enter HTTP/1.0, a landmark version released in 1996 that laid the groundwork for the web we know today. HTTP/1.0 was a game-changer, introducing features that revolutionized web communication: Headers: Metad
Developers are increasingly relying on AI coding assistants to accelerate our daily workflows. These tools can autocomplete functions, suggest bug fixes, and even generate entire modules or MVPs. Yet, as many of us have learned, the quality of the AI’s output depends largely on the quality of the prompt you provide. In other words, prompt engineering has become an essential skill. A poorly phrased
Tauri 2.0 Stable Release
We are very proud to finally announce the stable release for the new major version of Tauri. Welcome to Tauri 2.0! What is Tauri? In a Tauri application the frontend is written in your favorite web frontend stack. This runs inside the operating system WebView and communicates with the application core written mostly in Rust. When Should I Use Tauri? If you check any of the boxes below, you should
Today we are excited to announce the availability of TypeScript 6.0! If you are not familiar with TypeScript, it’s a language that builds on JavaScript by adding syntax for types, which enables type-checking to catch errors, and provide rich editor tooling. You can learn more about TypeScript and how to get started on the TypeScript website. But if you’re already familiar with the language, you ca
WebKit Features in Safari 16.4
Mar 27, 2023 by Patrick Angle, Marcos Caceres, Razvan Caliman, Jon Davis, Brady Eidson, Timothy Hatcher, Ryosuke Niwa, and Jen Simmons ContentsWeb Push on iOS and iPadOSImprovements for Web AppsWeb ComponentsCSSHTMLJavaScript and WebAssemblyWeb APIImages, Video, and AudioWKWebViewDeveloper ToolingWeb InspectorSafari Web ExtensionsSafari Content BlockersNew Restrictions in Lockdown ModeMore Improve
GitHub - modelcontextprotocol/servers: Model Context Protocol Servers
Official integrations are maintained by companies building production ready MCP servers for their platforms. 21st.dev Magic - Create crafted UI components inspired by the best 21st.dev design engineers. 2slides - An MCP server that provides tools to convert content into slides/PPT/presentation or generate slides/PPT/presentation with user intention. ActionKit by Paragon - Connect to 130+ SaaS inte
IDEs CLion DataGrip DataSpell Fleet GoLand IntelliJ IDEA PhpStorm PyCharm RustRover Rider RubyMine WebStorm Plugins & Services Big Data Tools Code With Me JetBrains Platform Scala Toolbox App Writerside JetBrains AI Grazie Junie JetBrains for Data Kineto Team Tools Datalore Space TeamCity Upsource YouTrack Hub Qodana CodeCanvas Matter .NET & Visual Studio .NET Tools ReSharper C++ Languages & Frame
Introducing Ezno
Ezno is an experimental compiler I have been working on and off for a while. In short, it is a JavaScript compiler featuring checking, correctness and performance for building full-stack (rendering on the client and server) websites. This post is just an overview of some of the features I have been working on which I think are quite cool as well an overview on the project philosophy ;) It is still
How modern browsers work
Note: For those eager to dive deep into how browsers work, an excellent resource is Browser Engineering by Pavel Panchekha and Chris Harrelson (available at browser.engineering). Please do check it out. This article is an overview of how browsers work. Web developers often treat the browser as a black box that magically transforms HTML, CSS, and JavaScript into interactive web applications. In tru
Cloudflare Workers + Hono ワークショップ - ServerlessDays Tokyo 2023
Cloudflare Workers + Hono ワークショップ 資料はこちら => workshops.yusuke.run #serverlessdays Yusuke Wada 2023-09-24 ServerlessDays Tokyo 2023 workshops.yusuke.run アジェンダ ワークショップについて Workers イントロダクション Hono イントロダクション 基本編 プロキシ編 Web API編 フルスタック編 AI編 Honoをより深く知る その他 1. ワークショップについて 1.1 対象 対象者 Cloudflareでのアプリケーション作成に興味のある方 Honoを使ってみたい方 フロント、バックエンド問いません 前提条件 Wranglerが動く環境をつくっておく npx wrangler が動く JavaScriptに対する知識があるとよい
Skills are custom instructions that extend Claude's capabilities for specific tasks or domains. When you create a skill via a SKILL.md file, you're teaching Claude how to handle specific scenarios more effectively. The power of skills lies in their ability to encode institutional knowledge, standardize outputs, and handle complex multi-step workflows that would otherwise require repeated explanati
Remote DOM lets you take a tree of DOM elements created in a sandboxed JavaScript environment, and render them to the DOM in a different JavaScript environment. This allows you to isolate potentially-untrusted code off the main thread, but still allow that code to render a controlled set of UI elements to the main page. The easiest way to use Remote DOM is to synchronize elements between a hidden
September 7, 2024 Hacker News Reddit Lobsters RussianI want to provide a smooth experience to my site visitors, so I work on accessibility and ensure it works without JavaScript enabled. I care about page load time because some pages contain large illustrations, so I minify my HTML. But one thing makes turning my blog light as a feather a pain in the ass. The hurdleSee, a major win in traffic redu
Today, we are excited to announce the launch of .NET 10, the most productive, modern, secure, intelligent, and performant release of .NET yet. It’s the result of another year of effort from thousands of developers around the world. This release includes thousands of performance, security, and functional improvements across the entire .NET stack-from languages and developer tools to workloads-enabl
Pull Request ごとに S3 + CloudFront へ SPA のプレビュー環境をデプロイする - Classi開発者ブログ
Classi でソフトウェアエンジニアをやっている koki です。 S3 + CloudFront でホスティングしている SPA (Single Page Application) で Pull Request ごとにプレビュー環境をデプロイする仕組みを作ってみたところ、かなり体験が良かったので紹介します。 前提 Classi で提供している学習トレーニング機能には、それを裏で支えるコンテンツ管理システム ( 以下、内部 CMS ) が存在しています。 この内部 CMS については以下の記事でも簡単に紹介されているので、こちらをご参照ください。 tech.classi.jp 内部 CMS のフロントエンドは Angular を使用した SPA になっており、 Amazon S3 と Amazon Cloudfront を使用してホスティングされています。 抱えていた課題 / つくったも
Functional programming is finally going mainstream Object-oriented and imperative programming aren’t going away, but functional programming is finding its way into more codebases. Klint Finley // July 12, 2022 Paul Louth had a great development team at Meddbase, the healthcare software company he founded in 2005. But as the company grew, so did their bug count. That’s expected, up to a point. More
Assessing Claude Mythos Preview’s cybersecurity capabilities April 7, 2026 Nicholas Carlini, Newton Cheng, Keane Lucas, Michael Moore, Milad Nasr, Vinay Prabhushankar, Winnie Xiao Hakeem Angulu, Evyatar Ben Asher, Jackie Bow, Keir Bradwell, Ben Buchanan, David Forsythe, Daniel Freeman, Alex Gaynor, Xinyang Ge, Logan Graham, Kyla Guru, Hasnain Lakhani, Matt McNiece, Mojtaba Mehrara, Renee Nichol, A
Today we’re excited to announce the availability of TypeScript 4.7! If you’re not yet familiar with TypeScript, it’s a language that builds on JavaScript and adds syntax for types. Types help describe what kinds of values you’re working with and what kinds of functions you’re calling. TypeScript can use this information to help you avoid about mistakes like typos, missing arguments, or forgetting
Mitchell Hashimoto was behind Vagrant, Packer, Consul, Terraform, Vault, Nomad, Waypoint and now builds Ghostty and Vouch. In this interview, we talk about terminals, Zig and open source. You’ve been interviewed a lot. Why do people like to interview you? In interviews, everyone comes from a different angle. Many people want to know how the software engineering to business founder mindset transiti
Nic Jansma (@nicj) is a software developer at Akamai building high-performance websites, apps and open-source tools. Table of Contents The JS Self-Profiling API What is Sampled Profiling? Downsides to Sampled Profiling API Document Policy API Shape Sample Interval Buffer Who to Profile When to Profile Specific Operations User Interactions Page Load Overhead Anatomy of a Profile Beaconing Size Comp
Today we’re excited to announce our beta release of TypeScript 5.0! This release brings many new features, while aiming to make TypeScript, smaller, simpler, and faster. We’ve implemented the new decorators standard, functionality to better support ESM projects in Node and bundlers, new ways for library authors to control generic inference, expanded our JSDoc functionality, simplified configuratio
Today we’re excited to announce the release of TypeScript 5.2! If you’re not familiar with TypeScript, it’s a language that builds on top of JavaScript by making it possible to declare and describe types. Writing types in our code allows us to explain intent and have other tools check our code to catch mistakes like typos, issues with null and undefined, and more. Types also power TypeScript’s edi
WebKit Features in Safari 17.0
Sep 18, 2023 by Jen Simmons and the Safari / WebKit Team Today’s the day for Safari 17.0. It’s now available for iOS 17 and iPadOS 17. [Update September 26th] And now, Safari 17.0 is available for macOS Ventura, and macOS Monterey, and macOS Sonoma. Safari 17.0 is also available in the vision OS Simulator, where you can test your website by downloading the latest beta of Xcode 15, which supports t
Today we are announcing the beta release of TypeScript 6.0! To get started using the beta, you can get it through npm with the following command: npm install -D typescript@beta TypeScript 6.0 is a unique release in that we intend for it to be the last release based on the current JavaScript codebase. As announced last year (with recent updates here), we are working on a new codebase for the TypeSc
On January 14, 2006, John Resig introduced a JavaScript library called jQuery at BarCamp in New York City. Now, 20 years later, the jQuery team is happy to announce the final release of jQuery 4.0.0. After a long development cycle and several pre-releases, jQuery 4.0.0 brings many improvements and modernizations. It is the first major version release in almost 10 years and includes some breaking c
WebKit Features in Safari 17.4
ContentsArchitectural improvementsWeb AppsForm elementsCSSWeb APIJavaScriptMediaSVGWebGLWeb AssemblyWeb InspectorChanges to SafariSafari ExtensionsWeb AuthenticationBug Fixes and moreUpdating to Safari 17.4Feedback Just like Safari 15.4 and Safari 16.4, this March’s release of Safari 17.4 is a significant one for web developers. We’re proud to announce another 46 features and 146 bug fixes. You ca
Node.js 18.x runtime now available in AWS Lambda | Amazon Web Services
AWS Compute Blog Node.js 18.x runtime now available in AWS Lambda This post is written by Suraj Tripathi, Cloud Consultant, AppDev. You can now develop AWS Lambda functions using the Node.js 18 runtime. This version is in active LTS status and considered ready for general use. When creating or updating functions, specify a runtime parameter value of nodejs18.x or use the appropriate container base
Today we’re excited to announce the release of TypeScript 5.6! If you’re not familiar with TypeScript, it’s a language that builds on top of JavaScript by adding syntax for types. Types describe the shapes we expect of our variables, parameters, and functions, and the TypeScript type-checker can help catch issues like typos, missing properties, and bad function calls before we even run our code. T
Golang Mini Reference 2022: A Quick Guide to the Modern Go Programming Language (REVIEW COPY)
Golang Mini Reference 2022 A Quick Guide to the Modern Go Programming Language (REVIEW COPY) Harry Yoon Version 0.9.0, 2022-08-24 REVIEW COPY This is review copy, not to be shared or distributed to others. Please forward any feedback or comments to the author. • feedback@codingbookspress.com The book is tentatively scheduled to be published on September 14th, 2022. We hope that when the release da
Introduction to Go 1.21 The latest Go release, version 1.21, arrives six months after Go 1.20. Most of its changes are in the implementation of the toolchain, runtime, and libraries. As always, the release maintains the Go 1 promise of compatibility; in fact, Go 1.21 improves upon that promise. We expect almost all Go programs to continue to compile and run as before. Go 1.21 introduces a small ch
Posted on September 8, 2025 I get asked on my stream and at talks I give, “What is it like to work in Haskell in production, full-time?” From November of 2020 until August 2025, I was employed at Mercury where I wrote code in Haskell. During that time I also started up a live video stream where I’ve built several libraries, games, and applications in Haskell for an audience. This post is a summary
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CORSガイドの決定版 | POSTD
HTMLを拡張し、JSなしで動的UIを作る「htmx」 | gihyo.jp
Slack platform overview | Slack Developer Docs
プロと読み解く Ruby 3.1 NEWS - クックパッド開発者ブログ
Announcing TypeScript 5.0 - TypeScript
New WebKit Features in Safari 15.4
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Optimizing Javascript for fun and for profit
HTTP/1.0 From Scratch
The Prompt Engineering Playbook for Programmers
Announcing TypeScript 6.0 - TypeScript
JavaScript Best Practices | The WebStorm Blog
How to create Skills for Claude: steps and examples | Claude
GitHub - Shopify/remote-dom
WebP: The WebPage compression format
Announcing .NET 10 - .NET Blog
Functional programming is finally going mainstream
Claude Mythos Preview \ red.anthropic.com
Announcing TypeScript 4.7 - TypeScript
Interview With Mitchell Hashimoto
JS Self-Profiling API In Practice
Announcing TypeScript 5.0 Beta - TypeScript
Announcing TypeScript 5.2 - TypeScript
Announcing TypeScript 6.0 Beta - TypeScript
jQuery 4.0.0 | Official jQuery Blog
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Agentultra - Using Haskell in Production