投稿時間:2022-09-12 04:16:45 RSSフィード2022-09-12 04:00 分まとめ(20件)

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海外TECH	MakeUseOf	Why Does Windows Update Itself So Much?	https://www.makeuseof.com/windows-update-frequency/	reason	2022-09-11 18:15:13
海外TECH	DEV Community	Creating an animated typing effect in React	https://dev.to/bcncodeschool/creating-an-animated-typing-effect-in-react-13k0	Creating an animated typing effect in ReactThe idea behind this is that we render text from the state and keep updating state variable one character at a time with a bit of delay Each time state is updated our component will re render showing text typed one character after another So first thing in our React app we will create a component Let s name it TextTyper We will need to have useState and useEffect hooks in it so we can import them right away import React useState useEffect from react const TextTyper gt const typedText setTypedText useState return lt span gt typedText lt span gt export default TextTyperIn state we have declared a variable typedText which is rendered inside span HTML element This would be the variable which we are going to update Let s say we want to print Banana First we will render empty string then we will add B to typedText and see it in the page then we will update it to Ba and so on Let s create a function typingRender It will take arguments the whole phrase to type the updater method which will be our setTypedText and an interval value to tell the function the delay between rendering each character In this function we will use variable localTypingIndex to go through the indexes of characters in the incoming string and take them one by one We will also declare a variable localTyping to mirror what should be in state and add letters to it to put to state import React useState useEffect from react const TextTyper gt const typedText setTypedText useState const typingRender text updater interval gt local counter used to go through indexes of the phrase let localTypingIndex local string to add characters to and put to state let localTyping if text if we have a phrase to type we will start the interval let printer setInterval gt if our local index counter is less than the length of the phrase we keep going if localTypingIndex lt text length we set to state our local string with the phrase updater localTyping text localTypingIndex and increase the local index localTypingIndex else once we reached the end of the phrase we reset local index localTypingIndex clear local string with phrase localTyping clear the interval to stop clearInterval printer interval return lt span gt typedText lt span gt export default TextTyperNow we have our typing function it s time to execute it We want this to happen once when component is initially rendered so we will use useEffect with empty array of dependencies const TextTyper gt const typedText setTypedText useState declare the variable to hold the phraseconst text This will be the phrase printed one by one character declare a variable with the interval of millisecondsconst interval const typingRender text updater interval gt let localTypingIndex let localTyping if text let printer setInterval gt if localTypingIndex lt text length updater localTyping text localTypingIndex localTypingIndex else localTypingIndex localTyping clearInterval printer interval run this effect on first render useEffect gt call the function passing a phrase setter method for state and interval var typingRender text setTypedText interval text interval return lt span gt typedText lt span gt export default TextTyperNow the component will work perfectly fine but we can make it more flexible so all the data for it to work will come via props and we will even set the variable to control inside which HTML element we want to render our phrase import React useState useEffect from react const TextTyper now the phrase interval and HTML element desired will come via props and we have some default values here text interval Markup span gt const typedText setTypedText useState const typingRender text updater interval gt let localTypingIndex let localTyping if text let printer setInterval gt if localTypingIndex lt text length updater localTyping text localTypingIndex localTypingIndex else localTypingIndex localTyping clearInterval printer interval useEffect gt typingRender text setTypedText interval text interval return lt Markup gt typedText lt Markup gt export default TextTyperSo now if we want to use this we can import the component and render it with passing some props importing our component in App jsimport TextTyper from TextTyper function App const textToRender This will be the phrase printed one by one character return lt div className App gt rendering it passing lt TextTyper text textToRender interval Markup code gt lt div gt export default App Here is a link to the working code sandbox You can also install and import this component with npm or yarn	2022-09-11 18:32:54
海外TECH	DEV Community	Primitives and References in JavaScript.	https://dev.to/sujithvsuresh/primitives-and-references-in-javascript-1jmb	Primitives and References in JavaScript PrimitiveString boolean number are primitive type Let s take a look at an example of it let number let num number number console log num Output Here whenever we are assigning the variable number to the variable num we are actually copying the value of number to the variable num So even if we change the value of variable number it won t affect the value of num And this behaviour is called primitive ReferenceArray and objects are reference type in js Let s look at an example const person name Max const secondPerson person person name Ajith console log secondPerson Output name Ajith In the above code block the object person is assigned to the variable secondPerson And then we change the value of name in object person from Max to Ajith And then we console the secondPerson we can see that the value of secondPerson has also changed It is because the variable secondPerson actually stores a pointer which points to the memory location of the object person So whenever we change something in person it will also affect secondPerson In order to avoid this behaviour we can use spread operator to copy the values inside an array or object to a new array or objects which is assigned to a new variable	2022-09-11 18:04:19
Apple	AppleInsider - Frontpage News	Apple taking 85% of Globalstar network for Emergency SOS	https://appleinsider.com/articles/22/09/09/apple-taking-85-of-globalstar-network-for-emergency-sos?utm_medium=rss	Apple taking of Globalstar network for Emergency SOSAn SEC filing from Globalstar reveals that Apple plans to use of its current and future network capacity for its services to iPhone consumers and pay for future satellite upgrades Apple makes it as simple as possible to locate a satelliteThe entire iPhone family will have a brand new feature called Emergency SOS via Satellite An Form K filing published on September from the Securities and Exchange Commission shows just how much Globalstar network capacity Apple will use at Read more	2022-09-11 18:40:41
ニュース	@日本経済新聞 電子版	メタバースに看板広告　HIKKYや博報堂系、普及後押し https://t.co/YpWXVZ6DKG	https://twitter.com/nikkei/statuses/1569032443675701250	hikky	2022-09-11 18:37:40
ニュース	BBC News - Home	England v South Africa: Broad, Stokes, Robinson & Anderson set up victory push	https://www.bbc.co.uk/sport/cricket/62864995?at_medium=RSS&at_campaign=KARANGA	England v South Africa Broad Stokes Robinson amp Anderson set up victory pushEngland are closing in on a series clinching victory over South Africa after a supreme bowling display on the fourth day of the third Test at The Oval	2022-09-11 18:36:33
ニュース	BBC News - Home	BMW PGA Championship: Shane Lowry holds off Rory McIlroy & Jon Rahm	https://www.bbc.co.uk/sport/golf/62871758?at_medium=RSS&at_campaign=KARANGA	BMW PGA Championship Shane Lowry holds off Rory McIlroy amp Jon RahmIreland s Shane Lowry birdies the th to beat Jon Rahm and Rory McIlroy to the BMW PGA Championship title by one stroke at Wentworth	2022-09-11 18:14:06
ニュース	BBC News - Home	England v South Africa: Crawley, Broad, Stokes, Robinson & Anderson star at The Oval	https://www.bbc.co.uk/sport/av/cricket/62868946?at_medium=RSS&at_campaign=KARANGA	England v South Africa Crawley Broad Stokes Robinson amp Anderson star at The OvalZak Crawley and England s bowlers star as the hosts close in on a series clinching victory over South Africa at The Oval	2022-09-11 18:11:26
ニュース	BBC News - Home	US Open: Alfie Hewett beat Shingo Kunieda to win wheelchair singles title	https://www.bbc.co.uk/sport/disability-sport/62871810?at_medium=RSS&at_campaign=KARANGA	US Open Alfie Hewett beat Shingo Kunieda to win wheelchair singles titleBritain s Alfie Hewett beats Shingo Kunieda to win the US Open men s wheelchair title and secure his sixth major singles trophy	2022-09-11 18:39:03
ビジネス	ダイヤモンド・オンライン - 新着記事	急激な円安、日銀が静観できる理由 - WSJ PickUp	https://diamond.jp/articles/-/309527	wsjpickup	2022-09-12 03:55:00
ビジネス	ダイヤモンド・オンライン - 新着記事	経営者はピカイチだけど事業はイマイチの会社、経営者はイマイチだけど事業はピカイチの会社、どっちを選ぶ？ - 投資家の思考法	https://diamond.jp/articles/-/308907	その思考法が書かれたのが『ビジネスエリートになるための投資家の思考法』奥野一成である。	2022-09-12 03:50:00
ビジネス	ダイヤモンド・オンライン - 新着記事	【精神科医が教える】 「負の感情」で周りに迷惑をかける人が 決定的に誤解していること - 精神科医Tomyが教える　１秒で不安が吹き飛ぶ言葉	https://diamond.jp/articles/-/308596	【精神科医が教える】「負の感情」で周りに迷惑をかける人が決定的に誤解していること精神科医Tomyが教える秒で不安が吹き飛ぶ言葉増刷を重ねて好評多々の感動小説『精神科医Tomyが教える心の荷物の手放し方』の出発点となった「秒シリーズ」の第弾『精神科医Tomyが教える秒で不安が吹き飛ぶ言葉』から、きょうのひと言仕事でもプライベートでも、誰かに怒りの感情を抱いてしまうことってありますよね怒りを抱く原因はいろいろとありますが、そのうちのひとつは、相手に対する「期待」があります。	2022-09-12 03:45:00
ビジネス	ダイヤモンド・オンライン - 新着記事	【言葉を変えて弱みを強みに変える！】「古いもの」編 - 「A4」1枚チラシで今すぐ売上をあげるすごい方法	https://diamond.jp/articles/-/309332		2022-09-12 03:40:00
ビジネス	ダイヤモンド・オンライン - 新着記事	予算は過去2番目の水準、ドーマー命題で分かる日本財政への処方箋 - 数字は語る	https://diamond.jp/articles/-/309531	子育て支援	2022-09-12 03:35:00
ビジネス	ダイヤモンド・オンライン - 新着記事	メットライフ生命副社長に聞く、「顧客思い」3年連続1位の理由 - ダイヤモンド保険ラボ	https://diamond.jp/articles/-/309526	保険会社	2022-09-12 03:30:00
ビジネス	ダイヤモンド・オンライン - 新着記事	大学寮の部屋改装に100万円　いまどきの米学生 - WSJ PickUp	https://diamond.jp/articles/-/309528	wsjpickup	2022-09-12 03:25:00
ビジネス	ダイヤモンド・オンライン - 新着記事	中国の監視国家モデル、相反する二つの顔 - WSJ PickUp	https://diamond.jp/articles/-/309529	wsjpickup	2022-09-12 03:20:00
ビジネス	ダイヤモンド・オンライン - 新着記事	「マイペースゆえに成績が伸びる子、勉強が遅れる子」親の向き合い方に決定的差 - ひとりっ子の学力の伸ばし方	https://diamond.jp/articles/-/306918	自己肯定感	2022-09-12 03:15:00
ビジネス	ダイヤモンド・オンライン - 新着記事	「他人の不幸を喜ぶ人」が無意識に抱えているたった1つの厄介な感情【書籍オンライン編集部セレクション】 - 武器としての組織心理学	https://diamond.jp/articles/-/309113	人間関係	2022-09-12 03:10:00
海外TECH	reddit	Ohtani hits his 34th home run of the season after picking up his 12th win on the mound last night!	https://www.reddit.com/r/baseball/comments/xbpkr6/ohtani_hits_his_34th_home_run_of_the_season_after/	Ohtani hits his th home run of the season after picking up his th win on the mound last night submitted by u Blazingbee to r baseball link comments	2022-09-11 18:18:45