投稿時間:2023-07-30 21:07:22 RSSフィード2023-07-30 21:00 分まとめ(9件)

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python	Pythonタグが付けられた新着投稿 - Qiita	ChatGPTのリクエストを並列化して時短しよう！	https://qiita.com/mekadomio/items/a448745748751de0ac96	chatgpt	2023-07-30 20:02:35
golang	Goタグが付けられた新着投稿 - Qiita	Golang×クリーンアーキテクチャのRest APIでテストを書こう	https://qiita.com/rudy39/items/55f66cef45434838e616	handlerhttp	2023-07-30 20:25:35
海外TECH	DEV Community	Simplifying State Management: A Practical Guide to Using Redux with React	https://dev.to/bilal1718/simplifying-state-management-a-practical-guide-to-using-redux-with-react-poa	Simplifying State Management A Practical Guide to Using Redux with ReactWhen it comes to developing user interfaces with React many professionals choose Redux as their go to state management solution With its predictability and ease of use Redux is a popular choice for managing application state In this informative blog post we will walk you through the process of integrating Redux into your React application starting from the initial setup all the way to connecting your components seamlessly Setting Up Redux To begin using Redux in your React app you need to install two essential packages Redux and React Redux A quick installation can be done via npm or yarn npm install redux react reduxoryarn add redux react redux Creating the Redux Store At the heart of Redux lies the store which holds the entire state tree of your application To create a store you must define a reducer function responsible for updating the state based on dispatched actions The reducer takes in the current state and an action before returning a new state Here s an example of a basic reducer function const initialState counter const reducer state initialState action gt switch action type case INCREMENT return state counter state counter case DECREMENT return state counter state counter default return state Creating Actions Actions act as information carriers that trigger changes within your application s state They are simple JavaScript objects with a type property that describes the type of action being performed Here s an example illustrating how to create actions for incrementing and decrementing a counter const increment gt type INCREMENT const decrement gt type DECREMENT Establishing the Redux Store To create the actual Redux store utilize the createStore function provided by the Redux package and pass in your reducer function import createStore from redux const store createStore reducer Connecting Redux with React Using the Provider component from the React Redux package you can seamlessly connect your React components to the Redux store The Provider component accepts the store as a prop automatically making it accessible to all components within your application Here s how you set up the Provider component in your app s entry point import React from react import ReactDOM from react dom import Provider from react redux import store from store import App from App ReactDOM render lt Provider store store gt lt App gt lt Provider gt document getElementById root Connecting React Components to Redux To access the state and dispatch actions within your React components you ll leverage the connect function provided by React Redux Here s an example demonstrating how to connect a component to Redux using connect import React from react import connect from react redux import increment decrement from actions const Counter counter increment decrement gt return lt div gt lt h gt counter lt h gt lt button onClick increment gt Increment lt button gt lt button onClick decrement gt Decrement lt button gt lt div gt const mapStateToProps state gt counter state counter const mapDispatchToProps increment decrement export default connect mapStateToProps mapDispatchToProps Counter In this example we have successfully connected our Counter component to the Redux store We map the counter state along with the increment and decrement actions as props Working with Redux in your React application may seem daunting at first but it provides an organized approach to managing your application s state Once you grasp the fundamental concepts building more complex applications becomes a breeze Just remember to install the necessary dependencies create your Redux store define actions and reducers connect your components using the Provider and connect and access the state and dispatch actions within your components We hope this blog post has provided you with valuable insights on working with Redux in a React project bilal Muhammad Bilal ·GitHub bilal has repositories available Follow their code on GitHub github com	2023-07-30 11:22:11
海外TECH	DEV Community	PNMP Package Manager: What is it and Why You Should Be Using it - A Comprehensive Guide	https://dev.to/sergioholgado/pnmp-package-manager-what-is-it-and-why-you-should-be-using-it-a-comprehensive-guide-4c66	PNMP Package Manager What is it and Why You Should Be Using it   A Comprehensive GuideEverything about the new Fast disk space efficient package manager that s taking over npm ·PNPM The New npm Challenger Discover the rise of PNPM and why it s taking the development world by storm ·Inside PNPM s Magic Unravel the inner workings of PNPM and its unique approach to package management ·Getting Started with PNPM Step by step guide to effortlessly integrate PNPM into your projects with easy installation and setup ·Mastering PNPM CLI Learn essential CLI commands configuration and shortcuts to enhance your development workflow PNPM The New NPM and Yarn Challengernpm Node Package Manager has long been the industry standard but a new contender has emerged pnpm Pinned Node Package Manager Offering enhanced speed resource efficiency insightful logs and is times more efficient pnpm is positioning itself as a viable alternative to npm showcasing why npm may be falling behind When comparing PNPM and Yarn it becomes evident that PNPM outperforms Yarn in terms of speed regardless of cache type cold or hot The key to PNPM s speed lies in its file linking approach where it simply links files from the global store while Yarn adopts a file copying method from its cache Additionally PNPM ensures efficient disk usage by never saving package versions more than once on a disk clean install installed for the first time with no cache on the system re install install after the first install with cache and lockfile remove node modules and run install with cache remove node modules lock file and run install with lockfile remove node modules and cache and run install with cache and node modules only remove lockfile and install gain with node modules and lockfile remove cache and run install again with node modules remove cache and lockfile and install again Downsides of using PNPMDue to its flat tree structure pnpm does not support the lock files produced by NPM However there exists a convenient command that enables the conversion of NPM Yarn lock files into a pnpm compatible format It s important to note that pnpm cannot publish packages with bundledDependencies However it is worth mentioning that even on NPM using bundledDependencies is not a recommended practice Instead the preferred approach is to employ a package bundler such as webpack rollup or ESBuild to handle the bundling process effectively This ensures a more efficient and manageable packaging of dependencies for the project Inside PNPM s Magic When utilizing npm having projects with the same dependency would lead to separate copies of that dependency being saved on the disk However pnpm adopts a smarter approach by storing dependencies in a content addressable store resulting in the following benefits Efficient Storage Utilization When depending on different versions of the same dependency pnpm optimizes disk usage by only adding the files that differ to the store Suppose a dependency contains files and a new version introduces changes in just one file In that case running pnpm update will only add the modified file to the store instead of cloning the entire dependency substantially reducing storage overhead Centralized File Storage Instead of using the flatten tree structure PNPM uses a symbolic link structure this approach results in all dependency files being consolidated into a single location on the disk During the installation process pnpm creates hard links from this central repository to each project eliminating the need for redundant copies This innovative approach allows different projects to share dependencies of the same version saving considerable disk space The cumulative result of these optimizations is a significant reduction in disk space consumption directly proportional to the number of projects and their associated dependencies Additionally pnpm achieves faster installations due to its streamlined approach making it a highly efficient package manager choice for developers Getting Started with PNPM InstallationInstalling with Windows Powershell iwr useb iexInstalling with NPM·Node js already installed npm install g pnpm·Node js not installed included in package as exe npm install g pnpm exeInstall with Chocolateychoco install pnpmpnpm installThe pnpm install command is used to install project dependencies It creates a non flat node modules structure in a content addressable store optimizing storage and providing faster installations It also supports multi package installations in a repository pnpm installpnpm addThe pnpm add command allows you to add new dependencies to your project It automatically updates the package json file and installs the new package pnpm addpnpm updateThe pnpm update command helps update dependencies to their latest versions It efficiently updates only the changed files in the content addressable store reducing the disk space required pnpm updatepnpm removeTo remove dependencies from the project you can use the pnpm remove command It removes the specified packages and updates the package json file accordingly pnpm remove·pnpm listThe pnpm list command displays a tree like view of the project s dependencies It shows all installed packages and their respective versions pnpm list·pnpm store statusThe pnpm store status command provides an overview of the content addressable store s status displaying its size and the number of packages stored pnpm store status·pnpm store pruneTo optimize disk space usage you can use the pnpm store prune command It removes unreferenced packages from the store pnmp store prune·pnpm publishThe pnpm publish command enables developers to publish their packages to registries and share them with the community When you publish a package using PNPM it employs the content addressable store to optimize the publishing process Instead of duplicating package files for each version PNPM links common files from the store drastically reducing the size of the published package This intelligent approach leads to faster publishing times and more efficient storage usage on the registry contributing to a better overall developer experience pnpm publish PNPM WorkspacesPNPM s Workspaces feature allows developers to manage multiple packages within a monorepository with remarkable ease By defining a single package json file at the root of the repository and specifying the individual packages as workspaces PNPM treats them as interdependent projects When you run pnpm installat the root of the repository PNPM installs dependencies for all workspaces ensuring consistency across the entire project This centralized approach streamlines development facilitates code sharing and simplifies the maintenance of complex projects name my monorepo private true workspaces packages	2023-07-30 11:09:56
ニュース	BBC News - Home	Sunak orders review of low traffic neighbourhoods in pro-motorist message	https://www.bbc.co.uk/news/uk-politics-66351785?at_medium=RSS&at_campaign=KARANGA	people	2023-07-30 11:37:16
ニュース	BBC News - Home	Niger coup leader warns regional and Western powers against military intervention	https://www.bbc.co.uk/news/world-africa-66353284?at_medium=RSS&at_campaign=KARANGA	france	2023-07-30 11:49:05
ニュース	BBC News - Home	Women's World Cup 2023: Colombia's Linda Caicedo opens scoring against Germany	https://www.bbc.co.uk/sport/av/football/66354224?at_medium=RSS&at_campaign=KARANGA	Women x s World Cup Colombia x s Linda Caicedo opens scoring against GermanyWatch as Colombia s year old Linda Caicedo opens the scoring against Germany with a brilliant individual goal at the Women s World Cup	2023-07-30 11:49:00
ニュース	BBC News - Home	Colombia stun Germany with added-time winner	https://www.bbc.co.uk/sport/football/66352255?at_medium=RSS&at_campaign=KARANGA	world	2023-07-30 11:55:23
ニュース	BBC News - Home	Manchester United: Erik ten Hag on Rasmus Hojlund, Andre Onana and Glazers	https://www.bbc.co.uk/sport/football/66353364?at_medium=RSS&at_campaign=KARANGA	Manchester United Erik ten Hag on Rasmus Hojlund Andre Onana and GlazersManchester United manager Erik ten Hag challenges his side to raise the bar and find consistency to achieve the targets he has set them	2023-07-30 11:21:26