// Good: choose between two options as appropriate (see below). import * as ng from '@angular/core'; import {Foo} from './foo'; // Only when needed: default imports. import Button from 'Button'; // Sometimes needed to import libraries for their side effects: import 'jasmine'; import '@polymer/paper-button'; Import paths TypeScript code must use paths to import other TypeScript code. Paths may be r
Pretty Print Raw files are usually minified, and therefore hard to read. Use the Pretty Print option to format it In the background, Chrome is creating a new file (names filename.js:formatted), closing that file will undo the formatting. If doing this each time is getting boring, then there's an experimental setting to auto-enable pretty print for all sources. Under ⋮ → Settings → Experiments Sele
「Postgres で試した？」と聞き返せるようになるまでもしくはなぜ私は雰囲気で技術を語るのか？ — Just use Postgres 読書感想文 - じゃあ、おうちで学べる
はじめに 「Just use Postgres」という言葉を初めて聞いたのは、いつだったか覚えていません。Twitter か Hacker News か、あるいは社内の Slack か。どこで聞いたにせよ、私の反応は決まっていました。「また極端なことを言う人がいる」と。 「それ、〇〇でもできますよ」——この手のフレーズはもう100回は聞いてきました。そして大抵の場合、その〇〇は専用ツールに置き換えられていきます。技術が専門分化していくのは自然な流れです。 全文検索なら Elasticsearch。時系列データなら InfluxDB。メッセージキューなら RabbitMQ。それぞれの分野に専門家がいて、専用のソリューションがあって、ベストプラクティスがあります。「とりあえず Postgres で」なんて、それは思考停止ではないか、と。でも、心のどこかで気になっていたんです。 www.mann
防衛省サイバーコンテスト 2025 writeup - st98 の日記帳 - コピー
2/2に12時間というちょうどよい競技時間で開催された。21時終了だったけれども、11時45分ぐらいに最速で全完して1位🎉 第1回以来4年ぶりの優勝だ。昨年大会の第4回ではヒントの閲覧数で優勝を逃してしまって悔しい思いをしたので、雪辱を果たすことができ嬉しい。開始直後からずっと1位を独走できており、450名以上のプレイヤーがいる中で圧勝だったのも嬉しい。 昨年度や一昨年度はバルクが作問を担当していたが、今回はAGESTが担当していた。これまでの問題と比較すると全体的に易化したように思うが、解くにあたって発想の大きな飛躍を必要とするいわゆる「エスパー要素」のある問題はごく一部を除いて存在しておらず*1、よかったと思う。また、昨年度・一昨年度に引き続きwriteupは公開可能というのもよかった。 戦略というほどの戦略は立てていなかったけれども、とりあえずWebを見た後は全カテゴリを上から見て
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
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 -
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
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
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 .NET & Visual Studio .NET Tools ReSharper C++ Languages & Frameworks K
What's New In DevTools (Chrome 94) | Blog | Chrome for Developers
Use DevTools in your preferred language Chrome DevTools now supports more than 80 languages, allowing you to work in your preferred language! Open Settings, then select your preferred language under the Preferences > Language dropdown and reload DevTools. Preferences" width="800" height="494"> Chromium issue: 1163928 New Nest Hub devices in the Device list You can now simulate the dimensions of Ne
A few months ago, I set myself the challenge of writing a C compiler in 500 lines of Python1, after writing my SDF donut post. How hard could it be? The answer was, pretty hard, even when dropping quite a few features. But it was also pretty interesting, and the result is surprisingly functional and not too hard to understand! There's too much code for me to comprehensively cover in a single blog
Next.js 13 vs Remix: An In-depth case studyLast updated on 29 Sep 2023 by Prateek Surana • - min read When it comes to building web applications, React has been at the forefront for a while now, and its adoption continues to grow. Among the most common approaches to building web applications with React, Next.js stands out as one of the most preferred options. Next.js has also been in the limel
With pen and paper, anyone can write a journal entry, draw a diagram, perform a calculation, or sketch a cartoon. Digital tablets like the iPad or reMarkable can adapt pen and paper into the world of digital media. In doing so, they trade away some of paper’s advantages like cheapness and tangibility. In exchange, we get new computational powers like nondestructive editing and ease of transmission
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
We are excited to announce the release of the new version of Prettier! We have made the migration to using ECMAScript Modules for all our source code. This change has significantly improved the development experience for the Prettier team. Please rest assured that when using Prettier as a library, you can still use it as CommonJS as well. This update comes with several breaking changes. One notabl
Today we are excited to announce the release of TypeScript 5.9! If you’re not familiar with TypeScript, it’s a language that builds on JavaScript by adding syntax for types. With types, TypeScript makes it possible to check your code to avoid bugs ahead of time. The TypeScript type-checker does all this, and is also the foundation of great tooling in your editor and elsewhere, making coding even e
Today we are excited to announce the beta release of TypeScript 4.7! To get started using the beta, you can use npm with the following command: npm install typescript@beta You can also get editor support by Downloading for Visual Studio 2022/2019 Following directions for Visual Studio Code and Sublime Text 3. Here’s a quick list of what’s new in TypeScript 4.7! ECMAScript Module Support in Node.js
Deprecation of formatting rules - ESLint - Pluggable JavaScript Linter
In ESLint v8.53.0, scheduled to be released on Friday, November 3, 2023, we will formally deprecate our formatting rules. Formatting rules are those rules that simply enforce code conventions around spacing, semicolons, string formats, etc. For a variety of reasons, which are discussed in this post, this is the right decision for ESLint going forward. However, to understand how we got here, it’s h
In this post I’ll walk through the full implementation of a Virtual DOM in a bit over 200 lines of JavaScript. The result is a full-featured and sufficiently performant virtual DOM library (demos). It’s available on NPM as the smvc package. The main goal is to illustrate the fundamental technique behind tools like React. React, Vue and the Elm language all simplify the creation of interactive web
Today we’re excited to announce the release of TypeScript 4.8! If you’re not yet familiar with TypeScript, it’s a language that builds on JavaScript and adds syntax for types. These types let you put your expectations and assumptions into your code, and those assumptions can then be checked by the TypeScript type-checker. This checking can help avoid typos, calling uninitialized values, mixing up
Object Structure in JavaScript EnginesFrom a developer's perspective, objects in JavaScript are quite flexible and understandable. We can add, remove, and modify object properties on our own. However, few people think about how objects are stored in memory and processed by JS engines. Can a developer's actions, directly or indirectly, impact performance and memory consumption? Let's try to delve i
All JavaScript and TypeScript Features of the last 3 years
TypeScript as envisioned by Stable DiffusionThis article goes through almost all of the changes of the last 3 years (and some from earlier) in JavaScript / ECMAScript and TypeScript . Not all of the following features will be relevant to you or even practical, but they should instead serve to show what’s possible and to deepen your understanding of these languages. There are a lot of TypeScript fe
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
AST vs. Bytecode: Interpreters in the Age of Meta-Compilation
233 AST vs. Bytecode: Interpreters in the Age of Meta-Compilation OCTAVE LAROSE, University of Kent, UK SOPHIE KALEBA, University of Kent, UK HUMPHREY BURCHELL, University of Kent, UK STEFAN MARR, University of Kent, UK Thanks to partial evaluation and meta-tracing, it became practical to build language implementations that reach state-of-the-art peak performance by implementing only an interprete
The product https://joinmastodon.org Mastodon is a free, open-source social network server based on ActivityPub where users can follow friends and discover new ones. On Mastodon, users can publish anything they want: links, pictures, text, and video. All Mastodon servers are interoperable as a federated network. Open source The project is open source at https://github.com/mastodon/mastodon License
WebKit Features in Safari 18.0
ContentsNew in Safari 18Web apps for MacCSSSpatial WebHTMLJavaScriptWeb APICanvasManaged Media SourceWebRTCHTTPSWebGLWeb InspectorPasskeysSafari ExtensionsApple PayDeprecationsBug Fixes and moreUpdating to Safari 18.0Feedback Safari 18.0 is here. Along with iOS 18, iPadOS 18, macOS Sequoia and visionOS 2, today is the day another 53 web platform features, as well as 25 deprecations and 209 resolve
Speeding up the JavaScript ecosystem - Rust and JavaScript Plugins
Over the past year (2024) there has been a strong movement to rewrite JavaScript tools in Rust to make them faster. Rust is well suited for this as it runs much closer to hardware and doesn't rely on garbage collection. This makes it an ideal candidate for computationally intensive tasks. Linting in its basic form is such a task, as it involves parsing and traversing lots of source code. But there
Highlights This is a summary of the significant changes, both breaking and non-breaking, you need to know about when upgrading from ESLint v8.x to ESLint v9.0.0. Installing Because this is a major release, you may not automatically be upgraded by npm. To ensure you are using this version, run: npm i eslint@9.0.0 --save-dev Copy code to clipboard Migration Guide As there are a lot of changes, we’ve
Today we’re excited to announce the release of TypeScript 5.5! 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
web-vitals.js、Google アナリティクス、BigQuery を使用してパフォーマンスを測定する | Google Codelabs
web-vitals.js、Google アナリティクス、BigQuery を使用してパフォーマンスを測定する 1. 始める前に 演習内容 この Codelab で行う内容は次のとおりです。 Google アナリティクス 4 プロパティを BigQuery にリンクします。 web-vitals ライブラリをウェブページに追加します。 web-vitals データを準備して Google アナリティクスに送信します。 BigQuery でウェブに関する主な指標のデータをクエリします。 Google データポータルでダッシュボードを作成し、ウェブに関する主な指標のデータを可視化します。 必要なもの GA4 プロパティを持つ Google アナリティクス アカウント。 Google Cloud アカウント。 Chromium ベースのウェブブラウザ（Google Chrome、Microsof
Update 1.80.1: The update addresses these issues. Update 1.80.2: The update addresses this security issue. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the June 2023 release of Visual Studio Code. There are many updates in this version that we hope you'll like, some of the key highlights include: Accessibility improvements - Accessible V
Join a VS Code Dev Days event near you to learn about AI-assisted development in VS Code. Update 1.70.1: The update addresses these issues. Update 1.70.2: The update addresses these issues. Update 1.70.3: This update is only available for Windows 7 users and is the last release supporting Windows 7. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welc
Today we’re announcing our beta release of TypeScript 4.8! To get started using the beta, you can get it through NuGet, or- use npm with the following command: npm install -D typescript@beta You can also get editor support by Downloading for Visual Studio 2022/2019 Following directions for Visual Studio Code. Here’s a quick list of what’s new in TypeScript 4.8! Improved Intersection Reduction, Uni
【速報】Rails 8.0.0がリリースされました Rails 8.0（v8.0.0タグ）は、7.2.0リリースから半年後のリリースということもあり、メジャーリリースとしてはChangelogの変更件数が少なめなのが特徴です。機能面では、Strong Parametersのexpect追加や、MySQL 5.5のサポート廃止が目につきます。大きなbreaking changesも今のところ見当たりません。 rails/rails at v8.0.0 以下、Rails 8.0のChangelogを件数の多い順に見ていきます。なお、原則として削除のChangelogは、その項目が非推奨化されたときのプルリク情報にリンクしています。 なお、以下の機能にはChangelogがありません。 Action Mailbox Action Mailer 🔗 Active Record（56件） Rail
In this tutorial, you'll learn how the React compiler can help you write more optimized React applications. React is a user interface library that has been doing its job quite well for over a decade. The component architecture, uni-directional data flow, and declarative nature stand out in helping devs building production-ready, scalable software applications. Over the releases (even up until the
Release date: May 8, 2025 Update: Enable Next Edit Suggestions (NES) by default in VS Code Stable (more...). Update 1.100.1: The update addresses these security issues. Update 1.100.2: The update addresses these issues. Update 1.100.3: The update addresses these issues. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the April 2025 release
The year is 2023 and we’ve released Node.js v20. It’s a significant accomplishment, and this article aims to use scientific numbers to assess the state of Node.js’ performance. All the benchmark results contain a reproducible example and hardware details. To reduce the noise for regular readers, the reproducible steps will be collapsed at the beginning of all sections. This article aims to provide
When a single-page application needs to fetch data from a remote source, it needs to do so while remaining responsive and providing feedback to the user during an often slow query. Five patterns help with this. Asynchronous State Handler wraps these queries with meta-queries for the state of the query. Parallel Data Fetching minimizes wait time. Fallback Markup specifies fallback displays in marku
The string is arguably the most essential data type in programming — every programming language and software in the world uses strings in one way or another. It enables humans to easily communicate with sophisticated programs and machines. One thing that would help you a lot as a programmer is understanding how to use and manipulate strings so that you can build programs users love. Regular expres
Welcome to WWDC25! We’ve got lots of exciting announcements about web technology to share with you this week. Don’t miss our seven sessions, including What’s new in Safari and WebKit. Today brings the beta of Safari 26, with 67 new features and 107 improvements. We’ll take a tour of them all in this article. But first — Safari 26? Where is Safari 19? You might have seen today during the WWDC25 Key
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