// 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
How I built a modern website in 2021September 29th, 2021 — 34 min read For over half of 2021, I worked on a complete rewrite of kentcdodds.com. You're reading this on the rewrite of this site! Are you using dark mode or light mode? Have you signed in and selected your team yet? Have you tried to call into the Call Kent Podcast? This blog post isn't about these and other features of the new site, b
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
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
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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
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
Show navigation JavaScript allows calling a function with a different number of arguments than the expected number of parameters, i.e., one can pass fewer or more arguments than the declared formal parameters. The former case is called under-application and the latter is called over-application. In the under-application case, the remaining parameters get assigned the undefined value. In the over-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
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
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
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
Today we excited to announce the availability of TypeScript 5.7! If you’re not familiar with TypeScript, it’s a language that builds on JavaScript by adding syntax for type declarations and annotations. This syntax can be used by the TypeScript compiler to type-check our code, and it can also be erased to emit clean, idiomatic JavaScript code. Type-checking is helpful because it can catch bugs in
Today we are excited to announce the availability of TypeScript 4.9! If you’re not familiar with TypeScript, it’s a language that builds on JavaScript by adding types and type-checking. Types can describe things like the shapes of our objects, how functions can be called, and whether a property can be null or undefined. TypeScript can check these types to make sure we’re not making mistakes in our
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
潜んでいるリスク、一番苦手なリスクです！どうも、whatasoda です。 モノリシックなサービスでは、サービスの成長とともに 1 つのアプリケーションの中にさまざまな性質の処理が混在するようになります。Node.js のようなシングルスレッドで処理が実行されるランタイムでは、複数の処理を走らせる場合に 1 つしかないスレッドを取り合う形で互いの処理を待機させ合うような振る舞いをすることがあります。 技術スタックを TypeScript に統一しているダイニーでは当然バックエンドの API サーバーを Node.js 上で実行しています。過去、「注文の受付」や「会計処理」といったリアルタイム性が求められる処理と、「売上の集計」や「CSV ファイルの生成」といったバッチ系の重たい処理が一部共存していたことがありました。 そういった環境で実行される処理同士が干渉し合うことで、レイテンシやエラー
Today we’re excited to announce the release of TypeScript 5.8! If you’re not familiar with TypeScript, it’s a language that builds on top of JavaScript by adding syntax for 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 editor tooling like the auto
Toggle dark mode What follows is a brain dump of everything I know about compiling Rust to WebAssembly. Enjoy. Some time ago, I wrote a blog post on how to compile C to WebAssembly without Emscripten, i.e. without the default tool that makes that process easy. In Rust, the tool that makes WebAssembly easy is called wasm-bindgen, and we are going to ditch it! At the same time, Rust is a bit differe
TypeScript and JavaScript have steadily evolved over the last years, and some of the habits we built over the last decades have become obsolete. Some might never have been meaningful. Here's a list of 10 habits that we all should break. If you are interested in more articles and news about web product development and entrepreneurship, please feel free to follow me on Twitter. Onto the examples! Pl
Today we’re excited to announce our Release Candidate (RC) of TypeScript 4.7! Between now and the stable release of TypeScript 4.7, we expect no further changes apart from critical bug fixes. To get started using the RC, you can get it through NuGet, or use npm with the following command: npm install typescript@rc You can also get editor support by Downloading for Visual Studio 2022/2019 Following
Today we’re excited to announce the release of TypeScript 5.4! 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
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
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
Today we’re excited to announce the release of TypeScript 5.3! If you’re not familiar with TypeScript, it’s a language that adds type syntax to JavaScript to bring type-checking. Type-checking can catch all sorts of issues like typos and forgetting to check for null and undefined. But types go beyond type-checking – the same analyses of TypeScript’s type-checker are used for rich editor tooling li
Today we are announcing the availability of TypeScript 5.7 Beta. To get started using the beta, you can get it through npm with the following command: npm install -D typescript@beta Let’s take a look at what’s new in TypeScript 5.7! Checks for Never-Initialized Variables For a long time, TypeScript has been able to catch issues when a variable has not yet been initialized in all prior branches. le
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
Update 1.78.1: The update addresses this security issue. Update 1.78.2: The update addresses these issues. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the April 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 - Better scre
Today we are excited to announce the availability of TypeScript 5.5 Beta. To get started using the beta, you can get it through NuGet, or through npm with the following command: npm install -D typescript@beta Here’s a quick list of what’s new in TypeScript 5.5! Inferred Type Predicates Control Flow Narrowing for Constant Indexed Accesses Type Imports in JSDoc Regular Expression Syntax Checking Iso
Today we are excited to announce the availability of the release candidate of TypeScript 5.5. To get started using the RC, you can get it through NuGet, or through npm with the following command: npm install -D typescript@rc Here’s a quick list of what’s new in TypeScript 5.5! Inferred Type Predicates Control Flow Narrowing for Constant Indexed Accesses Type Imports in JSDoc Regular Expression Syn
Today we’re excited to announce our Release Candidate (RC) of TypeScript 4.8. Between now and the stable release of TypeScript 4.8, we expect no further changes apart from critical bug fixes. To get started using the RC, you can get it through NuGet, or use npm with the following command: npm install -D typescript@rc You can also get editor support by Downloading for Visual Studio 2022/2019 Follow
環境 第1章 Deviseをはじめよう 001 Deviseを使ってみよう 002 ヘルパーを使ってみよう 第2章 モジュールを使う 003 モジュールとは？ モジュールの種類 モジュールのカラム モジュールのルーティング モジュールのコントローラーとビュー モジュールのメソッド モジュールのメール送信 モジュールの設定 004 Registerableモジュール コントローラーとルーティング 設定 参考 005 Database Authenticatableモジュール コントローラーとルーティング カラム 設定 メソッド メール 参考 006 Rememberableモジュール カラム 設定 メソッド 参考 007 Recoverableモジュール コントローラーとルーティング カラム 設定 メソッド メール 参考 008 Validatableモジュール バリデーション項目 設定 参
Indoor VivantsAnton Sviridov. I love reinventing the wheel and I usually use Scala for that. TL;DR We are deploying an app to Cloudflare using Scala.js We are using ScalablyTyped We are using Scala 3 heavily Code on Github Deployed app Cloudflare API bindings Welcome to the "Put ma Scala on yo cloud" series I want to say that I'm kicking off a blog series, but even I don't believe that. If I did,
TypeScript Function Syntaxes
TypeScript Function SyntaxesFebruary 25th, 2021 — 15 min read In JavaScript itself, there are lots of ways to write functions. Add TypeScript to the mix and all of a sudden it's a lot to think about. So with the help of some friends, I've put together this list of various function forms you'll typically need/run into with simple examples. Keep in mind that there are TONS of combinations of differe
皆さんこんにちは。自宅のダイナゼノンが、カイゼルグリッドナイトになりました。おっくんです。 去る 2021 年 8 月 10 日に Deno 1.13 がリリースされました。 今回も、リリースノートを参考に 変更事項の気になるところを紹介したいと思います。 実行環境 Docker イメージ denoland/deno:centos(確認時点では Deno 1.13.0 でした) Deno 1.13 Deno 1.13 での変更事項をDeno 1.13 リリースノートを元に確認します。 ネイティブ HTTP サーバー API が安定化しました。 Deno 1.9 より登場した ネイティブ HTTP サーバー API が安定化し、利用に当たって --unstable の付与が不要になりました。 Rust の高速な HTTP サーバー hyper Webサーバーを JavaScript API
Modern Javascript: Everything you missed over the last 10 years
Modern Javascript: Everything you missed over the last 10 years (ECMAScript 2020)JavaScript has come a long way since I knew it as the “D” in DHTML. For anyone like me, who’s been reluctant to use the latest syntax that could require polyfills or a transpiler, I’ve written this cheatsheet to get you caught up on all the goodness that’s widely supported in modern browsers. I’ve made this page conci
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Google TypeScript Style Guide
How I built a modern website in 2021
The Prompt Engineering Playbook for Programmers
JavaScript Best Practices | The WebStorm Blog
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