投稿時間:2023-06-28 17:15:37 RSSフィード2023-06-28 17:00 分まとめ(20件)

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python	Pythonタグが付けられた新着投稿 - Qiita	Unicode: バイト列を U+4E03 〜 U+8E0F を使ってエンコードする	https://qiita.com/ikiuo/items/43acb405bb503c94366e	kanji	2023-06-28 16:10:38
Ruby	Rubyタグが付けられた新着投稿 - Qiita	formはないけどDBに保存したい時とFat Model, Skinny Controllerの原則を意識	https://qiita.com/uenomoto/items/d1db82645d75e7fcef4a	fatmodelskinnycontroller	2023-06-28 16:27:33
Docker	dockerタグが付けられた新着投稿 - Qiita	Railsで作ったアプリに気軽にメール送信機能をつけて開発環境で確認してみよう！	https://qiita.com/uenomoto/items/1af0626e18bde4c2e245	mailcatcher	2023-06-28 16:28:28
Docker	dockerタグが付けられた新着投稿 - Qiita	Reactのホットリロードを高速化するためのDocker設定方法	https://qiita.com/hiroki-yod/items/9b065f1b66ebb727f177	docker	2023-06-28 16:24:39
Azure	Azureタグが付けられた新着投稿 - Qiita	Azure Container Registryのリポジトリ世代管理方法を考える	https://qiita.com/shingo_kawahara/items/1daedf0b1073e70ac1a6	azure	2023-06-28 16:32:59
Git	Gitタグが付けられた新着投稿 - Qiita	自分のためだけにまとめる、よく使うgitコマンドたち（ブランチ作成・commit取り消し）	https://qiita.com/mymaicoburi/items/b57ad8fef56519c377d1	commit	2023-06-28 16:47:52
Ruby	Railsタグが付けられた新着投稿 - Qiita	Railsで作ったアプリに気軽にメール送信機能をつけて開発環境で確認してみよう！	https://qiita.com/uenomoto/items/1af0626e18bde4c2e245	mailcatcher	2023-06-28 16:28:28
Ruby	Railsタグが付けられた新着投稿 - Qiita	formはないけどDBに保存したい時とFat Model, Skinny Controllerの原則を意識	https://qiita.com/uenomoto/items/d1db82645d75e7fcef4a	fatmodelskinnycontroller	2023-06-28 16:27:33
海外TECH	DEV Community	React Redux in one shot while building a Project	https://dev.to/lovepreetsingh/react-redux-in-one-shot-while-building-a-project-jbd	React Redux in one shot while building a ProjectReact is extremely powerful when it comes to dynamic websites because It gives us the functionality of using reusable components in other components virtual dom and props passing to the different components But when your project grows It becomes a headache when you pass props under so many levels in your component tree of reactNo I am just kidding React Redux is very easy to learn Note You can also find the YouTube video here for better understanding Drop a subscribe and like for support guys ️ Let s StartSo React Redux is a state management or a global store that you provide to your components in your react component tree And so other components can access it Don t worry we ll see an example of using React Redux while building an App which is responsible for User to sign up and login users are stored in the DB User to add todo tasks and then store to the DB️So when user logs in to our app then his her todo app home looks like this and the homepage of the app looks like this ️Now what we want to do in this todo app is to pass the username that someone entered while logging in to the homepage component of our todo app So that when user clicks on save tasks he she can save tasks on the Database specific to his her username only React ReduxBut before explaining how to do that Let s see what React Redux is and how it works Let suppose there is no react redux and someone want to buy an item from a e commerce store So the properties that we will pass from login to the different components will be like Here we can see that with increase in the component tree level the prop passing or prop drilling will be much more So can we make a global kind of state management store which can store all the states of the components or any other variables So that others can change the state or fetch the latest stateHere we can see now login component can dispatch events or payload that can be stored in the redux store and other components can fetch using selectors Reducers Dispatchers and SelectorsSo in redux context we have reducers slices which means nothing but a slice of pizza If we want to manage the state of user login flow we can define a slice as loginSlice and if we want to manage the state of todo tasks in the store we can define a slice as tasksSlice Slices contains state managed variables and reducers functions to change the state or do any other work Then comes the root Reducer which is a combined reducer of all the slices defined like userSlice tasksSlice etc We use dispatchers to dispatch the payload or event to the store and selectors to fetch the latest state of the store Let s see in the codeNow we want to pass login information of the user to the todo home component via redux store To use react redux make sure you have installed react reduxnpm install reduxjs toolkitnpm install react reduxnpm install reduxLet s define the login Reducerimport createSlice from reduxjs toolkit const initialState user null const loginSlice createSlice name login initialState reducers setUser state action gt state user action payload name clearUser state gt state user null export const setUser clearUser loginSlice actions export default loginSlice reducer To define the root reducer rootReducer jsimport combineReducers from redux import loginReducer from loginReducer const rootReducer combineReducers login loginReducer Add other reducers here if needed export default rootReducer To use this reducer we need to provide a store to our whole app as import React from react import ReactDOM from react dom client import index css import App from App import BrowserRouter from react router dom import createStore from redux import Provider from react redux import rootReducer from Components rootReducer const root ReactDOM createRoot document getElementById root const store createStore rootReducer root render lt React StrictMode gt lt BrowserRouter gt lt Provider store store gt lt App gt lt Provider gt lt BrowserRouter gt lt React StrictMode gt Now while logging in we need to send the payload to our store asimport React useState from react import Login css import useNavigate from react router dom import axios from axios import useDispatch from react redux import setUser from loginReducer const Login gt const navigate useNavigate const name setName useState const password setPassword useState const dispatch useDispatch const handleLogin async gt try const response await axios get http localhost users console log response const user response data find userData gt userData name name amp amp userData password password if user console log Login successful dispatch setUser user Redirect to the homepage or any other desired page navigate home state username name else console error Login failed Handle login failure e g show an error message catch error console error Error logging in error Handle login error e g show an error message const handleSignUp gt navigate signup return Focus on how we are dispatching the payload using useDispatch hookNow on the todo homepage to fetch the user stored in the store by the login componentimport React useEffect useRef useState from react import Todo css import axios from axios import useSelector from react redux const Todo gt const username useSelector state gt state login user const tasks setTasks useState const taskInputRef useRef null That s it you have successfully integrated your app with Redux That was it for today Subscribe our YouTube channel to show your support to our efforts ️	2023-06-28 07:21:48
海外TECH	DEV Community	How To Spy on Classes	https://dev.to/zirkelc/how-to-spy-on-classes-5hh5	How To Spy on ClassesSpying in Jest allows us to mock classes while keeping the original implementation intact A spy can help us verify if a certain method was invoked without interfering with its functionality However the process of spying can vary especially when dealing with class methods versus simple functions There are three main scenarios we need to deal with spying on static methods spying on methods of a single instance and spying on methods of all instances of a class Spying on Static MethodsStatic methods are associated with the class itself not with any specific instance of the class This makes spying on them relatively straightforward We simply reference the class and specify which static method we want to spy on class Person static hello return Hello I am a static method goodbye return Goodbye I am an instance method test should call static method gt Spy on the static method const spy jest spyOn Person hello Invoke the static method Person hello Test if the static method has been called expect spy toHaveBeenCalled Spying on Methods of a Single InstanceIn scenarios where we have access to a particular instance of the class we can set a spy on any of this instance s methods We simply reference the instance and the method we want to spy on class Person static hello return Hello I am a static method goodbye return Goodbye I am an instance method test should call instance method of single object gt Create an instance of the class const person new Person Spy on the instance method const spy jest spyOn person goodbye Invoke the method on the instance person goodbye Test if the method on the instance has been called expect spy toHaveBeenCalled Spying on Methods of All InstancesIn many real world cases we may not have access to the specific instance of the class we want to spy on This instance might be hidden in a module we are testing and not directly exported or accessible from our test case In such situations we may choose to spy on all instances of a class To do this we reference the prototype of the class and the method we want to spy class Person static hello return Hello I am a static method goodbye return Goodbye I am an instance method Create an instance and call the instance methodfunction goodbye const person new Person return person goodbye test should call instance method of all objects gt Spy on the instance method for all instances const spy jest spyOn Person prototype goodbye Call function without access to underlying instance goodbye goodbye Test if the method has been called on any instance expect spy toHaveBeenCalledTimes I hope you found this post helpful If you have any questions or comments feel free to leave them below If you d like to connect with me you can find me on LinkedIn or GitHub Thanks for reading	2023-06-28 07:16:19
金融	JPX マーケットニュース	[OSE]有価証券オプションの調整後の権利行使価格：日本電信電話（株）	https://www.jpx.co.jp/news/2020/20230628-01.html	日本電信電話	2023-06-28 16:20:00
ニュース	BBC News - Home	Estimated 700,000 pupils in unsafe or ageing schools in England, says watchdog	https://www.bbc.co.uk/news/education-66030635?at_medium=RSS&at_campaign=KARANGA	conditions	2023-06-28 07:23:34
ニュース	BBC News - Home	Senior doctors back strike action in England	https://www.bbc.co.uk/news/health-65992178?at_medium=RSS&at_campaign=KARANGA	england	2023-06-28 07:10:43
ニュース	BBC News - Home	Declan Rice: Arsenal make third bid worth £105m for West Ham midfielder	https://www.bbc.co.uk/sport/football/66039046?at_medium=RSS&at_campaign=KARANGA	declan	2023-06-28 07:39:23
ニュース	BBC News - Home	Harry Kane: Bayern Munich set to make improved offer for Tottenham forward	https://www.bbc.co.uk/sport/football/66030410?at_medium=RSS&at_campaign=KARANGA	harry	2023-06-28 07:34:12
ビジネス	不景気.com	大塚バッティングセンターが閉店、現存施設で日本最古 - 不景気com	https://www.fukeiki.com/2023/06/otsuka-batting-center.html	東京都豊島区	2023-06-28 07:58:18
IT	週刊アスキー	夏限定の「くりーむパン 塩キャラメル」は必見！ 小田急百貨店 新宿店、「八天堂」が期間限定出店。「とげぬき福寿庵」も登場	https://weekly.ascii.jp/elem/000/004/142/4142951/	塩キャラメル	2023-06-28 16:30:00
IT	週刊アスキー	7つの美味しさを詰めたクッキー缶「ブルターニュ クッキーアソルティ〈缶〉シトロン」	https://weekly.ascii.jp/elem/000/004/142/4142941/	期間	2023-06-28 16:15:00
IT	週刊アスキー	『ハチャウマ』が「BitSummit Let's Go!!」に出展決定！ウマ娘たちの大感謝祭を遊べるチャンス	https://weekly.ascii.jp/elem/000/004/142/4142955/	bitsummitletsgo	2023-06-28 16:15:00
IT	週刊アスキー	『ウマ娘』新ストーリーイベント「#summer #besties」を6月29日より開催！	https://weekly.ascii.jp/elem/000/004/142/4142952/	cygames	2023-06-28 16:05:00