投稿時間:2023-03-18 14:11:34 RSSフィード2023-03-18 14:00 分まとめ(13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
TECH	Techable（テッカブル）	食品工場の人手不足対策に！食品工場向け人型協働ロボットの月額レンタルサービスを開始	https://techable.jp/archives/200277	foodly	2023-03-18 04:00:54
js	JavaScriptタグが付けられた新着投稿 - Qiita	Google Apps Scriptで作ったウェブアプリからGoogleドライブにファイルをアップロード	https://qiita.com/takatama/items/e394e51107fa53419656	googleapps	2023-03-18 13:31:31
js	JavaScriptタグが付けられた新着投稿 - Qiita	INE BotにLIFFフォームを追加してAirTableにデータを保存してみた。	https://qiita.com/takuymsn0324/items/d4d44dcea98f5e714c27	airtable	2023-03-18 13:05:37
Linux	Ubuntuタグが付けられた新着投稿 - Qiita	Ubuntu でアップデートで問題の発生したカーネルを旧カーネルに戻す	https://qiita.com/nanbuwks/items/f3d3949be8116b62bd5a	etcdefaultgrub	2023-03-18 13:38:25
Git	Gitタグが付けられた新着投稿 - Qiita	Git & GitHub まとめてみた	https://qiita.com/hatti_engineer/items/6f78bb19ff3d853df0ff	gitampgithub	2023-03-18 13:14:14
技術ブログ	Developers.IO	AIに手足ができる！Zapier Natural Language Actions + LangChainがすごいので、試してみた【LangChain・Zapier NLA・OpenAI】	https://dev.classmethod.jp/articles/tried-langchain-with-zapier-nla/	iernaturallanguageactions	2023-03-18 04:48:29
海外TECH	MakeUseOf	Flash Deal Slashes Yeedi Robovac Prices to New Lows	https://www.makeuseof.com/yeedi-robot-vacuum-flash-deal/	discount	2023-03-18 04:05:16
海外TECH	DEV Community	Scope, Hoisting and Closures in Javascript	https://dev.to/tejeswararao123/scope-hoisting-and-closures-in-javascript-5e7o	Scope Hoisting and Closures in Javascript ScopeScope in JavaScript refers to the accessibility of variables functions and objects in a particular part of the code JavaScript uses lexical scoping which means that the scope of a variable or function is determined by its location in the code Before getting into scope we have to know how we can declare variables in javascript There are three methods in javascript to declare variables ie let var and const The variables declared with a var will have function scope Examplefunction foo var a console log a foo Output console log a Error a is not definedIf a variable is declared in a function using var then it can be accessible in the function only but if it is defined in the block it will have block scope it can be accessed anywhere in the programExampleif lt var a console log a console log a Output In javascript nested functions can access variables in their parent function these nested functions are called closures Example function outer var a function inner var b console log a b inner outer Output The variables declared using let and const will have block scope means any variable declared within curly braces cannot accessible from outside of curly braces Exampleif lt var a console log a console log a Output undefinedNested functions can access variables declared in an outer functionIf a variable is declared outside all functions and blocks it will have global scope means it can be accessed from anywhere in the program HoistingIn javascript execution will have two phases one is the creation and another one is execution In the creation phase all variables will be created in memory with the default value undefined and all the functions will store fully Here only variables declared with var and regular functions will be created in the creation phase This is known as hoistingIn the execution phase variable initialization will take placeExampleconsole log hi undefinedconsole log hello reference errorvar hi let hello var hii hi function hi console log hii output ClosuresIn JavaScript a closure is created when a function is defined inside another function and the inner function is returned or passed as a reference to a variable outside its enclosing function The closure captures and retains the values of all the variables that were in scope at the time of its creation even after the outer function has returned Closures allow you to create private variables and functions that are inaccessible from outside the function in which they were definedExamplefunction outerFunction x function innerFunction y return x y return innerFunction let addFive outerFunction console log addFive Output In this example outerFunction returns innerFunction which is then assigned to the variable addFive When addFive is called with an argument of it returns The closure is created when innerFunction is defined inside outerFunction and it captures the value of x which is Even though outerFunction has returned and its local variables are no longer in scope the closure retains the value of x and can still access it when innerFunction is called Applications of closuresPrivate variables and methods Closures can be used to create private variables and methods that are inaccessible from outside the function in which they were defined This can be useful for preventing unintended modifications to your code For example function counter let count function increment count console log count return increment let c counter c Output c Output c Output Memoization Closures can be used to implement memoization which is a technique for caching the results of expensive function calls to improve performance For example function memoize func let cache return function args let key JSON stringify args if cache key console log Retrieving from cache return cache key else console log Calculating result let result func args cache key result return result function fibonacci n if n lt return n return fibonacci n fibonacci n let memoizedFibonacci memoize fibonacci console log memoizedFibonacci Output console log memoizedFibonacci Output Retrieving from cache Callback functions Closures can be used to create callback functions that have access to variables from the parent function This can be useful for implementing event handlers and other asynchronous operations For example function doSomething callback let data hello world setTimeout function callback data function callbackFunction data console log data toUpperCase doSomething callbackFunction Output HELLO WORLD	2023-03-18 04:05:33
金融	ニュース - 保険市場TIMES	フコク生命、小学校とのコラボ企画を実施	https://www.hokende.com/news/blog/entry/2023/03/18/134500	同社は周年プロジェクトの一環として、おやさいクレヨンの配布を行っている。	2023-03-18 13:45:00
海外ニュース	Japan Times latest articles	Will Russia’s Vladimir Putin really ever be arrested?	https://www.japantimes.co.jp/news/2023/03/18/world/politics-diplomacy-world/icc-arrest-warrant-russia-putin-focus/	crime	2023-03-18 13:56:41
ニュース	BBC News - Home	Putin arrest warrant: Biden welcomes ICC's war crimes charges	https://www.bbc.co.uk/news/world-europe-64998165?at_medium=RSS&at_campaign=KARANGA	ukrainian	2023-03-18 04:39:24
ビジネス	東洋経済オンライン	イオンのパート待遇｢大胆改善｣が映す相当な覚悟 パート責任者の時給を正社員と同等に､全体も向上 | 百貨店・量販店・総合スーパー | 東洋経済オンライン	https://toyokeizai.net/articles/-/660522?utm_source=rss&utm_medium=http&utm_campaign=link_back	総合スーパー	2023-03-18 13:30:00
ニュース	Newsweek	プーチン「専用列車」の写真を撮影・投稿してしまったロシア「鉄道オタク」の悲劇	https://www.newsweekjapan.jp/stories/world/2023/03/post-101138.php	「両親に、自分の命が危険にさらされていると話した」政府は列車の外観が分かる画像を公表していないコロトコフは、ロシアが年月にウクライナへの軍事侵攻を開始したカ月後に、ブログを閉鎖。	2023-03-18 13:41:00