投稿時間:2023-01-09 11:09:26 RSSフィード2023-01-09 11:00 分まとめ(12件)

カテゴリー等	サイト名等	記事タイトル・トレンドワード等	リンクURL	頻出ワード・要約等/検索ボリューム	登録日
Linux	Ubuntuタグが付けられた新着投稿 - Qiita	攻撃者心理が知りたくてペネトレーションテスト学習環境を整えた話	https://qiita.com/___q/items/32d83ea977e2b909d333	取捨選択	2023-01-09 10:58:38
AWS	AWSタグが付けられた新着投稿 - Qiita	【AWS】API Gatewayで配列パラメーターを受取る	https://qiita.com/ling350181/items/723b0dcc89fc6a01366d	multiv	2023-01-09 10:33:17
Docker	dockerタグが付けられた新着投稿 - Qiita	Simh Emulator on Docker	https://qiita.com/suzanHud/items/9e56c12d43467bd8a01e	cobol	2023-01-09 10:25:01
海外TECH	DEV Community	React & TypeScript: How to use Context API and useReducer with Firestore Database?	https://dev.to/elhamnajeebullah/react-typescript-how-to-use-context-api-and-usereducer-with-firestore-database-1oik	React amp TypeScript How to use Context API and useReducer with Firestore Database Here is an example of how you could create a React Context API and use the useReducer hook with TypeScript to manage state for a list of Amazon products stored in a Firestore database and more explanation for the code import React createContext useReducer Reducer useEffect from react import db from firebase Create a context for the productsexport const ProductsContext createContext lt products Product dispatch React Dispatch lt ProductAction gt gt products dispatch gt Define the types for the state and actionstype Product id string name string price number type ProductAction type ADD product Product type DELETE id string type UPDATE id string product Product type SET products Product Define the reducer functionconst productsReducer Reducer lt Product ProductAction gt state action gt switch action type case ADD return state action product case DELETE return state filter product gt product id action id case UPDATE return state map product gt product id action id action product product case SET return action products default return state Create a provider component for the products contextconst ProductsProvider React FC children gt const products dispatch useReducer productsReducer Load the products from the Firestore database when the component mounts useEffect gt const unsubscribe db collection products onSnapshot snapshot gt const products Product snapshot forEach doc gt products push id doc id doc data dispatch type SET products Unsubscribe from the snapshot listener when the component unmounts return gt unsubscribe Return the products context provider with the current state and dispatch function return lt ProductsContext Provider value products dispatch gt children This is just to show you how to use React and Typescript with Context API and useReducer hook not a complete app Got any questions please leave a comment	2023-01-09 01:18:20
海外科学	NYT > Science	Sync Your Calendar With the Solar System	https://www.nytimes.com/explain/2023/01/01/science/astronomy-space-calendar	event	2023-01-09 01:53:24
海外ニュース	Japan Times latest articles	Navigating perfect economic storms	https://www.japantimes.co.jp/opinion/2023/01/09/commentary/world-commentary/indonesia-covid-lessons/	performance	2023-01-09 10:00:50
ニュース	BBC News - Home	Brazil Congress: Lula vows to punish supporters of Bolsonaro after riot	https://www.bbc.co.uk/news/world-latin-america-64204860?at_medium=RSS&at_campaign=KARANGA	court	2023-01-09 01:52:10
ニュース	BBC News - Home	Prince Harry attacks lack of royal defence for Meghan after Jeremy Clarkson column	https://www.bbc.co.uk/news/uk-64205474?at_medium=RSS&at_campaign=KARANGA	recent	2023-01-09 01:53:36
ニュース	BBC News - Home	The Papers: Harry interview reaction and 'US China fears'	https://www.bbc.co.uk/news/blogs-the-papers-64206354?at_medium=RSS&at_campaign=KARANGA	china	2023-01-09 01:02:44
ニュース	BBC News - Home	Brazil Congress: ‘Sad to think we’ve come to this point’	https://www.bbc.co.uk/news/world-latin-america-64206854?at_medium=RSS&at_campaign=KARANGA	brasilia	2023-01-09 01:31:31
北海道	北海道新聞	催涙弾響く官庁エリア、ブラジル　支持者「あすも来る」と気勢	https://www.hokkaido-np.co.jp/article/784934/	警官隊	2023-01-09 10:31:00
北海道	北海道新聞	ミシャ流サッカー、円熟６年目　主力の穴補う新布陣　コンサドーレ	https://www.hokkaido-np.co.jp/article/784899/	監督	2023-01-09 10:23:21