Simple Code Reuse with React Hooks
Code reuse is very necessary for scaling. We’ll be looking at what React hooks are and how we can use them to keep our components D.R.Y. What are React Hooks?Hooks are a new feature proposal that lets you use state and other React features without writing a class. They’re currently in React v16.7.0-alpha and being discussed in an open RFC. So it is not recommended to use them in production. Why is
How to Build Faster with Reusable UI Components in React
We all know that React components let you divide your UI into sharable design elements (button, form, form-field, table, spinner etc). These reusable components are self-contained and have well-defined interfaces. As such, they can be reused to build more than one UI instance. Meaning, they can be shared and reused next time you build your application’s UI, or even a brand new application. This sa
Refactoring Patterns: The Rails Middleware Response Handler | Viget
Recently, I have found myself writing more middlewares to handle responses that need to live outside of the main Rails application. The API that Rack provides works well for something trivial, maybe where you want to allow a load balancer to query the application's status: class HealthCheck class Middleware def initialize(application) @application = application end def call(environment) if environ
React Anti-Pattern: Prop-Drilling
This article is also available in a video format. The examples from this article are available for download. The Anti-Pattern In this example, we have an application with two features: Three buttons, A, B, and C, change out a content area, e.g., Apple, Banana, and Cantaloupe (the navigation feature)A Swap Colors button swaps the background and foreground colors of the content areas (the color mana
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TypeScript(ã¾ãŸã¯JavaScript)ã§ã‚¤ãƒ™ãƒ³ãƒˆåを扱ã†å ´åˆã¯ã€"load"ã‚„"click"ç‰ã€ã‚¤ãƒ™ãƒ³ãƒˆåを直書ãã«ã™ã‚‹ã“ã¨ãŒå¤šã„ã¨æ€ã„ã¾ã™ã€‚ã—ã‹ã—ã€ã“ã®ã‚ˆã†ã«ã‚¤ãƒ™ãƒ³ãƒˆåを直書ãã—ãŸã‚³ãƒ¼ãƒ‡ã‚£ãƒ³ã‚°ã‚’è¡Œã†ã¨ã€ãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆãŒå¤§ãããªã‚‹ã»ã©ã‚¿ã‚¤ãƒ”ングミスã«æ°—ã¥ãã«ããã€ãƒã‚°ã®èª˜ç™ºã«ã¤ãªãŒã‚Šã¾ã™ã€‚ã“れを防ããŸã‚ã«ã€String enumsを作りã€ä¸€å…ƒç®¡ç†ã™ã‚‹ã“ã¨ã‚’ãŠè–¦ã‚ã—ã¾ã™ã€‚ イベントåを直書ãã—ãŸå‡¦ç† ã¾ãšã‚ˆã見å—ã‘られるプãƒã‚°ãƒ©ãƒŸãƒ³ã‚°æ–¹æ³•ã§ã™ã€‚ウインドウをクリックã—ãŸæ™‚ã«ã‚¢ãƒ©ãƒ¼ãƒˆã‚’出ã™å‡¦ç†ã¯TypeScriptã§ä¸‹è¨˜ã®ã‚ˆã†ã«è¨˜è¿°ã—ã¾ã™ã€‚ // ウインドウをクリックã—ãŸæ™‚ã®å‡¦ç† window.addEventListener("load", () => alert("ウィンドウã®ãƒãƒ¼ãƒ‰ãŒå®Œäº†ã—ã¾ã—ãŸã€‚")); window.addEventListener("click", () =
Pure functional components in React
As React applications grow in complexity, performance optimization becomes a priority to prevent performance decline. React provides two ways to prevent unnecessary re-renders: PureComponent for class components, and React.memo for functional components. In this tutorial, we’ll learn how to memoize components in React using React.PureComponent and the React.memo API. We’ll cover some of the fundam
Reactã®ãƒ‡ã‚¶ã‚¤ãƒ³ãƒ‘ターン Compound Components - Qiita
コンãƒãƒ¼ãƒãƒ³ãƒˆæŒ‡å‘ã§ã®é–‹ç™ºã‚‚割ã¨æž¯ã‚Œã¦ãã¦ã€æ˜¨å¹´ã‹ã‚‰æµ·å¤–ã§ã¯ã„ã‚ゆるデザインパターンã«åå‰ãŒã¤ã„ã¦ç´¹ä»‹ã•ã‚Œã‚‹ã“ã¨ãŒå¤šããªã£ã¦ãã¾ã—ãŸã€‚ ã“ã®è¨˜äº‹ã§ã¯ãã®å†…ã®ä¸€ã¤ã€Compound Componentsを紹介ã„ãŸã—ã¾ã™ã€‚ ã¾ãŸã‚¿ã‚¤ãƒˆãƒ«ã«ã€ŒReactã®ã€ã¨ã¤ã„ã¦ã¾ã™ãŒã€å®Ÿè£…例ãŒReactãªã ã‘ã§ã‚³ãƒ³ãƒãƒ¼ãƒãƒ³ãƒˆæŒ‡å‘ã§ã‚ã‚Œã°ä»–ã®UIライブラリã§ã‚‚考ãˆæ–¹ã¯æµç”¨å¯èƒ½ã§ã™ã€‚ 完æˆã—ãŸå®Ÿè£…ã¯ã“ã“ã«ç½®ãã¾ã—ãŸã€‚ https://codesandbox.io/s/104lvmynj4 å‚考 Ryan Florence - Compound Components Advanced React Component Patterns Compound Componentsã¨ã¯ ã¯ã˜ã‚ã« Compound ã¨ã„ã†è¨€è‘‰ã§ã™ãŒç›´è¨³ã ã¨å‹•è©žã§ æ··ãœåˆã‚ã›ã‚‹ ã¨ã„ã†æ„味ã§ã™ã€‚実際ã®å®Ÿè£…ã¯æ··ãœåˆã‚ã›ã‚‹ã¨ã„ã†ã‚ˆã‚Šã¯ã€Œçµ„ã¿åˆã‚ã›ã‚‹
エラーã¯å€¤ (Errors are values)
The Go Blogã®æ—¥æœ¬èªžè¨³ã‚’公開ã—ã¦ã„ã¾ã™ã€‚ä¿®æ£ã¯ https://github.com/ymotongpoo/goblog-ja/ ã¾ã§ã€‚ エラーã¯å€¤ Errors are values by Rob Pike Goプãƒã‚°ãƒ©ãƒžã€ç‰¹ã«ã¾ã Goã«ä¸æ…£ã‚Œãªé–‹ç™ºè€…ã«å…±é€šã™ã‚‹è°è«–ã®è©±é¡Œã¨ã„ãˆã°ã€ã‚¨ãƒ©ãƒ¼å‡¦ç†ã®æ–¹æ³•ã§ã—ょã†ã€‚ è°è«–ãŒæ¬¡ã®ã‚ˆã†ãªã‚³ãƒ¼ãƒ‰ã®é€£ç¶šã«ãªã‚‹ã“ã¨ã‚’嘆ãçµè«–ã«è‡³ã‚‹ã“ã¨ãŒã—ã°ã—ã°ã‚ã‚Šã¾ã™ã€‚ if err != nil { return err } 先日ã€ç¢ºèªã§ãã‚‹ã™ã¹ã¦ã®ã‚ªãƒ¼ãƒ—ンソースプãƒã‚¸ã‚§ã‚¯ãƒˆã‚’スã‚ャンã—ã¦ã¿ãŸã¨ã“ã‚ã€ã“ã®ã‚¹ãƒ‹ãƒšãƒƒãƒˆã¯ å…ˆã®ã‚ˆã†ãªé–‹ç™ºè€…ãŒä¿¡ã˜ã¦ã„ã‚‹ã»ã©ã§ã¯ãªãã€ã›ã„ãœã„1ページã«1ã¤ã‹2ã¤ç¾ã‚Œã‚‹ç¨‹åº¦ã§ã‚ã‚‹ã“ã¨ãŒã‚ã‹ã‚Šã¾ã—ãŸã€‚ ãã‚Œã§ã‚‚ãªãŠã€ã„ã¤ã‚‚次ã®ã‚¤ãƒ‡ã‚£ã‚ªãƒ をタイプã—ãªã‘ã‚Œã°ã„ã‘ãªã„ã¨å¼·ãä¿¡ã˜ã¦ã„ã‚‹ã®ã§ã‚ã‚Œã°ã€ ãã‚Œã¯ä½•ã‹ãŒé–“é•ã£ã¦ã„ã¾ã™ã—ã€æ˜Žã‚‰ã‹ã«å•é¡Œã®å¯¾è±¡
Refactoring JavaScript
If your JavaScript is a mess, frameworks can only do so much to help. No matter what framework, "compiles-to-JS" language, or library you use, bugs and performance concerns will always be an issue if the underlying quality of your JavaScript is poor. With this hands-on guide, you’ll learn how test and refactor your existing code to help reduce complexity, improve readability, and gain confidence i
ActiveRecord ã®ãƒ¢ãƒ‡ãƒ«ã‚’æ•´ç†ã™ã‚‹7ã¤ã®ãƒ‘ターン - tkawachi Blog
7 Patterns to Refactor Fat ActiveRecord Models ã¨ã„ã†è¨˜äº‹ãŒã‚ã‚Šã€èªã‚‚ã†èªã‚‚ã†ã¨æ€ã„ã¤ã¤1å¹´ãらã„経ã£ã¦ã—ã¾ã£ãŸã€‚ よã†ã‚„ãèªã‚“ã ã®ã§ç†è§£ã—ãŸå†…容を書ã„ã¦ãŠã。 コード例ã¯å…ƒè¨˜äº‹ã®ã‚‚ã®ã€‚ Rails 㧠thin controller, fat model を心ãŒã‘ã¦ã„ã‚‹ã¨ã€model ãŒãƒžã‚¸ã§æ¿€å¤ªã‚Šã—ã¦ãƒ¤ãƒããªã‚‹ã€‚ 実際ã«è‡ªåˆ†ãŒä»•äº‹ã§æ›¸ã„ã¦ã„ã‚‹ rails アプリも激太りã—ã¦ã¦ãƒ¤ãƒã„。 ã“ã® blog ã®ç†è€…ãŒä½œã£ã¦ã„ã‚‹ CodeClimate 㧠C 判定をもらã†ç¨‹åº¦ã«ã¯è‚¥æº€ä½“åž‹ã«ãªã£ã¦ã„る。 Mixinã«æŠœã出ã•ãªã„! Model ãŒå¤ªã£ã¦ããŸæ™‚ã«è€ƒãˆã‚‹ã®ã¯ ActiveSupport::Concern を使ã£ã¦æ„Ÿå¿ƒäº‹ã‚’抜ã出ã—ã¦ã€Mixin ã«ã™ã‚‹ã“ã¨ã ã¨æ€ã†ã€‚ 実際ã«æ‰‹å…ƒã®ã‚¢ãƒ—リã§ã‚‚ models/concerns/ ãªã‚“ã¦ã„ã†ãƒ‡ã‚£ãƒ¬
Angular-hint in Angular 1.3
With the release of version 1.3, the Angular project comes with a new module called angular-hint, that makes debugging and finding mistakes in the code base easier. It also gives us hints about best practices, so that our code is more maintainable and easier to read. In this article we’ll take a brief look at this module and explore how we can actually use it and what great features it provides. A
Node.js ãƒãƒ¥ãƒ¼ãƒˆãƒªã‚¢ãƒ« | Node ビギナーズブック
本書ã«ã¤ã„㦠本書ã¯ã€Node.jsã§ã®ã‚¢ãƒ—リケーション開発を始ã‚よã†ã¨ã™ã‚‹çš†ã•ã‚“ã«ã€ â€é«˜åº¦ãªâ€JavaScriptã«ã¤ã„ã¦çŸ¥ã‚‹ã¹ãã‚らゆるã“ã¨ã‚’解説ã—ã¾ã™ã€‚ よãã‚ã‚‹â€Hello Worldâ€ãƒãƒ¥ãƒ¼ãƒˆãƒªã‚¢ãƒ«ã®ã€ã¯ã‚‹ã‹ä¸Šã‚’ã„ãã‚‚ã®ã§ã™ã€‚ ステータス è²´æ–¹ãŒèªã‚“ã§ã„ã‚‹ã®ã¯ã€æœ¬æ›¸ã®ã„ã‚ゆる最終版ã¨ãªã‚Šã¾ã™ã€‚ ã¤ã¾ã‚Šæœ¬æ›¸ã¯ã€é–“é•ã„ãŒè¦‹ã¤ã‹ã£ãŸå ´åˆã‚„〠Node.jsã®æ–°ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã«ãŠãˆã‚‹å¤‰æ›´ç‚¹ã‚’åæ˜ ã™ã‚‹æ™‚ã®ã¿ã€æ”¹è¨‚ã•ã‚Œã¾ã™ã€‚ 最終更新日ã¯2012å¹´2月12æ—¥ã§ã™ã€‚ 本書内ã®ã‚³ãƒ¼ãƒ‰ã®ã‚µãƒ³ãƒ—ルã¯ã€Node.jsã®ãƒãƒ¼ã‚¸ãƒ§ãƒ³0.6.10ã§ãƒ†ã‚¹ãƒˆã—ã¦ã„ã¾ã™ã€‚ ターゲットèªè€… 本書ã¯ã€Rubyã€Pythonã€PHPã€Javaã®ã‚ˆã†ãªã€å°‘ãªãã¨ã‚‚ã²ã¨ã¤ã®ã‚ªãƒ–ジェクト指å‘言語をç†è§£ã—ã¦ãŠã‚Šã€ JavaScriptã«ã¤ã„ã¦ã¯ã‚ã¾ã‚ŠçµŒé¨“ãŒãªãã€Node.jsã«ã¤ã„ã¦ã¯å…¨ã経験ãŒãªã„ã¨ã„ã†ã€ 著者ã¨åŒã˜ã‚ˆã†ãªãƒãƒƒ
Tidy Up Your Angular Controllers with Factories and Services — SitePoint
Stay Relevant and Grow Your Career in TechPremium ResultsPublish articles on SitePointDaily curated jobsLearning PathsDiscounts to dev toolsStart Free Trial7 Day Free Trial. Cancel Anytime. There was a time, around five or six years ago, when jQuery was dominating the client side of the web. It read like plain English, it was easy to install, and the learning curve was flat enough for toddlers to
Rails Does Not Define Your Application Architecture
While Rails doesn’t prevent you from creating a well-architected application, it certainly doesn’t give you everything you need. This is not so bad if your application is incredibly simple, but for anything of moderate complexity (and I would argue that any app someone is paying you to produce is going to be moderately complex), Rails leaves a lot of architectural decisions to you. What is applica
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Using renderless components in React to handle data
R-Factor - React & Redux Refactoring Tools
How to Stop Using Callbacks and Start Living | HackerNoon
react-redux-complete-example/src/app/views/enhancers/fetchBefore.js at master · FortechRomania/react-redux-complete-example
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Four OH Fourrrrr | Big Machine
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