| Program |
[全てのタグ]の新着質問一覧｜teratail（テラテイル） |
例外がスローされないのは何故か |
https://teratail.com/questions/335031?rss=all
|
例外がスローされないのは何故かpublicnbspinterfacenbspApublicnbspabstractnbspclassnbspBnbspimplementsnbspApublicnbspclassnbspCnbspextendsnbspBpublicnbspclassnbspDnbspextendsnbspCpublicnbspclassnbspMainpublicnbspstaticnbspvoidnbspmainStringnbspargsAnbsparraynbspnbspnewnbspCnbspnullnbspnewnbspDnbspnbspnbspObjectnbspobjArraynbspnbsparrayMainクラスの配列の要素にnullがあるんですが、例外が発生しないそうです。 |
2021-04-25 04:50:08 |
| AWS |
AWSタグが付けられた新着投稿 - Qiita |
AWSアソシエイト試験に向けて4(VPC関係） |
https://qiita.com/shitikakei/items/f1853e5bd53df85d92ab
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上記の設定の場合はへの経路ということになるVPCを作ると以下のようになる。 |
2021-04-25 04:32:13 |
| 海外TECH |
DEV Community |
Ultimate NodeJs Resources |
https://dev.to/dhanushxeno/ultimate-nodejs-resources-1mg4
|
Ultimate NodeJs ResourcesHiThe below is my github repository which gives a combination of all the available resources of NodeJs I will be updating the repository frequently for the updated content regarding Node JsUse it Ultimate NodeJs ResourcesFor more technology related information connect with meTwitter |
2021-04-24 19:23:56 |
| 海外TECH |
DEV Community |
React Hooks | Why useCallback ? |
https://dev.to/bhupendra1011/react-hooks-why-usecallback-5hk8
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React Hooks Why useCallback The ProblemFunctions are First class citizens objects in JS which simply means they behave like objects functions can be stored in variable passed as argument or returned from a function Referential Equality gt gt false greeting Hi greeting Hi false Components Re renderingIn React rendering means creating react elements and displaying on screen this can be caused by state change context change or a parent re render This is will cause re run of the functional Component which will cause any function inside the Component to be destroyed Garbage Collected and created again on each re render ExampleBelow Component renders a Text and button fields value from the text field is saved to localStorage onChange import React from react const fnCount new Set stores only unique valuesexport default function App const name setName React useState gt window localStorage getItem name const count setCount React useState const saveText gt window localStorage setItem name name React useEffect gt saveText saveText fnCount add saveText keeps count of times new fn created console log fnCount return lt div className App gt lt h gt Understanding useCallback lt h gt lt input type text value name onChange e gt setName e target value placeholder Your Name gt lt button onClick gt setCount c gt c gt Count count lt button gt lt div gt In above code fnCount is a Set so it will keep track of number of times function saveText is created on each re render of App component triggered on change of Input field Below is the console log after button clicksOn Component mount fnCount had one entry but on each re render of component saveText fn is re initialized and is brand new so now fnCount has entries for each re render Since saveText is related to name state so should not be re run on button click This is the problem useCallback solves by not letting React to initialize function on each render unless dependencies in useCallback changes Solution const saveText gt window localStorage setItem name name const saveText React useCallback gt window localStorage setItem name name name After wrapping saveText fn with useCallback function count for saveText remains in fnCount mount time after clicks Since on button Click no dependencies of saveText is changed so useCallback returns the memoized or memorized function that was returned last time Example App |
2021-04-24 19:17:17 |
| 海外TECH |
DEV Community |
vue 3 ecommerce |
https://dev.to/tefoh/vue-3-ecommerce-1j7h
|
vue ecommercei create a repo a simple ecommerce template with cart and use a lot of things that a vue developer needs for basic app ui maybe not perfect but these what i used in this project a good folder structure sort by feature build a cart with vuexuse pluginscreate components for vanilla js librariescountdown timerdropdownslidersgalleryratingsource code demo i hope this will be useful for you |
2021-04-24 19:14:14 |
| Apple |
AppleInsider - Frontpage News |
Hermes has exclusive $699 AirTag Travel Tag, $570 iPhone 12 MagSafe case |
https://appleinsider.com/articles/21/04/24/hermes-sells-699-airtag-travel-tag-and-570-iphone-12-magsafe-case-as-own-store-exclusives?utm_medium=rss
|
Hermes has exclusive AirTag Travel Tag iPhone MagSafe caseThe luxury leather brand Hermes has introduced a fourth option in its AirTag accessory range one that is only available from the company s own store along with a new leather iPhone case As part of Apple s AirTag launch a raft of accessories were also announced giving consumers many different ways to carry around the tracking device This included Hermes which currently offers three options through Apple s online retail site However Hermes own store offers one more AirTag option that isn t available from Apple and can only be bought directly As spotted by Robb Report Hermes sells the AirTag Travel Tag Read more |
2021-04-24 19:46:26 |
| Apple |
AppleInsider - Frontpage News |
How to color balance Apple TV with the iPhone |
https://appleinsider.com/articles/21/04/24/how-to-color-balance-your-apple-tv-with-your-iphone?utm_medium=rss
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How to color balance Apple TV with the iPhoneColor balancing arriving in tvOS will help you get the best picture possible from your Apple TV and television by using your iPhone Here s how to use the new television calibration tool Avid watchers of TV shows and movies generally want to have the ideal image shown on their television For most people the default settings of a television may be good enough for their purposes but some spend time tweaking the picture settings to their preferred configuration This fine tuning of the image isn t necessarily a task that many people would want to go down especially given the complexity of the task for some television menus What s more setting the display settings on a television for one set top box may make the image perfect on that pairing of hardware but it may not be suitable for another connected device like a game console Read more |
2021-04-24 19:51:19 |
| Apple |
AppleInsider - Frontpage News |
Best purple iPhone 12 deals: free phone offers, cash discounts |
https://appleinsider.com/articles/21/04/23/best-purple-iphone-12-deals-free-phone-offers-cash-discounts?utm_medium=rss
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Best purple iPhone deals free phone offers cash discountsApple s purple iPhone is officially available for pre order and AppleInsider has rounded up the best iPhone deals on the new shade from leading wireless carriers Purple iPhone savingsAnnounced during this week s Apple Event the purple iPhone is perfect for spring and looks great with or without a case To celebrate the launch our Deals team has compiled a list of the best pre order incentives available from leading wireless carriers Read more |
2021-04-24 19:14:44 |
| Apple |
AppleInsider - Frontpage News |
Apple AR headset & 48-megapixel iPhone coming in 2022, says Ming-Chi Kuo |
https://appleinsider.com/articles/21/04/23/apple-expected-to-launch-ar-headset-and-48-megapixel-iphone-in-2022?utm_medium=rss
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Apple AR headset amp megapixel iPhone coming in says Ming Chi KuoAalyst Ming Chi Kuo says at least one new iPhone in will feature a megapixel camera and that Apple will launch an Apple AR headset then Credit Andrew O Hara AppleInsiderDoubling down on his previous predictions for Apple hardware analyst Ming Chi Kuo has told investors that he still expects Apple to release an AR headset and megapixel iPhone He s now further basing this on his research that shows Apple has been altering the mix of its suppliers Read more |
2021-04-24 19:55:32 |
| Apple |
AppleInsider - Frontpage News |
Initial engraved AirTag preorders sold out in minutes |
https://appleinsider.com/articles/21/04/23/initial-engraved-airtag-preorders-sold-out-in-minutes?utm_medium=rss
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Initial engraved AirTag preorders sold out in minutesApple s estimated shipping dates for an engraved four pack AirTag began slipping within five minutes of pre orders being opened Apple AirTagThe new AirTag appears to have exceeded Apple s expectations with engraved and non engraved versions soon slipping back from their original April delivery date The new order dates are changing fast enough that users are reporting inconsistent results across the US online Apple Store as well as overseas Read more |
2021-04-24 19:53:50 |
| Apple |
AppleInsider - Frontpage News |
New, thicker 12.9-inch iPad Pro can't use previous Magic Keyboard |
https://appleinsider.com/articles/21/04/23/new-thicker-129-inch-ipad-pro-cant-use-previous-magic-keyboard?utm_medium=rss
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New thicker inch iPad Pro can x t use previous Magic KeyboardBuyers of the new inch iPad Pro will not be able to use the previous model s Magic Keyboard Credit Andrew O Hara AppleInsiderAs noted by AppleInsider after the new iPad Pro launch Apple has been listing the Magic Keyboard as new prompting speculation about revisions to the design It s now been revealed that there is a change and it is to do with accommodating the new iPad Pro s mm thicker chassis Read more |
2021-04-24 19:58:22 |
| 海外TECH |
Engadget |
Supreme Court asked to review case against border device searches |
https://www.engadget.com/aclu-supreme-court-airport-device-searches-190406882.html
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Supreme Court asked to review case against border device searchesThe ACLU and EFF have asked the Supreme Court to hear a challenge against warrantless phone and laptop searches at borders including airports |
2021-04-24 19:04:06 |
| 海外科学 |
NYT > Science |
Halting the Vast Release of Methane Is Critical for Climate, U.N. Says |
https://www.nytimes.com/2021/04/24/climate/methane-leaks-united-nations.html
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Halting the Vast Release of Methane Is Critical for Climate U N SaysA major United Nations report will declare that slashing emissions of methane the main component of natural gas is far more vital than previously thought |
2021-04-24 19:36:35 |
| 海外ニュース |
Japan Times latest articles |
Urawa and Sendai share spoils as WE League preseason begins |
https://www.japantimes.co.jp/sports/2021/04/24/soccer/weleague-urawa-sendai-preseason/
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Urawa and Sendai share spoils as WE League preseason beginsNadeshiko Japan regular Yuika Sugasawa s penalty kick was negated by Hinata Miyazawa s second half equalizer in front of a healthy fans at Komaba Stadium |
2021-04-25 04:04:16 |
| ニュース |
BBC News - Home |
Biden says Armenian mass killing was genocide |
https://www.bbc.co.uk/news/world-us-canada-56874811
|
immediate |
2021-04-24 19:01:48 |
| ニュース |
BBC News - Home |
Covid-19: Hancock welcomes over half of UK getting first jab |
https://www.bbc.co.uk/news/uk-56875151
|
people |
2021-04-24 19:01:20 |
| ニュース |
BBC News - Home |
West Ham United 0-1 Chelsea: Timo Werner earns Blues key win in race for top four |
https://www.bbc.co.uk/sport/football/56782077
|
West Ham United Chelsea Timo Werner earns Blues key win in race for top fourChelsea take a huge step towards securing a Champions League spot as Timo Werner s first goal since February helps Thomas Tuchel s side beat top four rivals West Ham |
2021-04-24 19:12:14 |
| ビジネス |
ダイヤモンド・オンライン - 新着記事 |
三男一女東大理III合格佐藤ママ、「10歳の壁」を甘くみてない？ 春に遊んでしまった子どもの親御さんへ - from AERAdot. |
https://diamond.jp/articles/-/268993
|
三男一女東大理III合格佐藤ママ、「歳の壁」を甘くみてない春に遊んでしまった子どもの親御さんへfromAERAdot今週から新学期がスタートしました。 |
2021-04-25 04:55:00 |
| ビジネス |
ダイヤモンド・オンライン - 新着記事 |
マッキンゼー流！R＆Dの生産性を「30％」アップ！“診断・デザイン・実行”の手法【動画】 - マッキンゼー流！R&Dの極意 |
https://diamond.jp/articles/-/268304
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マッキンゼー流RDの生産性を「」アップ“診断・デザイン・実行の手法【動画】マッキンゼー流RampampDの極意マッキンゼー流「RD生産性変革」の極意が分かるRDの生産性を向上させ、技術革新を実現する秘策とは『マッキンゼー流RDの極意』全回最終回は、組織変革を実現するためのつのステップを解説します。 |
2021-04-25 04:52:00 |
| ビジネス |
ダイヤモンド・オンライン - 新着記事 |
「オンライン会議できちんと見える」カーディガンの羽織り方とは？ - 男のオフビジネス |
https://diamond.jp/articles/-/268991
|
自宅 |
2021-04-25 04:50:00 |
| ビジネス |
ダイヤモンド・オンライン - 新着記事 |
長崎空港と福岡空港から気軽に行ける世界遺産・五島列島の魅力 - 地球の歩き方ニュース＆レポート |
https://diamond.jp/articles/-/269122
|
世界遺産 |
2021-04-25 04:45:00 |
| ビジネス |
ダイヤモンド・オンライン - 新着記事 |
新日本酒紀行「出雲富士」 - 新日本酒紀行 |
https://diamond.jp/articles/-/267715
|
中国山地 |
2021-04-25 04:40:00 |
| ビジネス |
ダイヤモンド・オンライン - 新着記事 |
がん再発の予防を期待できるワクチン、米国で臨床試験が進行中 - ヘルスデーニュース |
https://diamond.jp/articles/-/268995
|
marcbaum |
2021-04-25 04:35:00 |
| ビジネス |
ダイヤモンド・オンライン - 新着記事 |
金脈の発見…ゴールドラッシュがアメリカにもたらした「もっとも大きなメリット」とは？ - 世界史は化学でできている |
https://diamond.jp/articles/-/269401
|
化学という学問の知的探求の営みを伝えると同時に、人間の夢や欲望を形にしてきた「化学」の実学として面白さを、著者の親切な文章と、図解、イラストも用いながら、やわらかく読者に届ける、白熱のサイエンスエンターテイメント『世界史は化学でできている』。 |
2021-04-25 04:30:00 |
| ビジネス |
ダイヤモンド・オンライン - 新着記事 |
発達障害の僕が発見した「いつも少し遅刻する人」に根本的に欠けている考え方 - 発達障害サバイバルガイド |
https://diamond.jp/articles/-/267498
|
|
2021-04-25 04:25:00 |
| ビジネス |
ダイヤモンド・オンライン - 新着記事 |
ビジョンを社内に浸透させるために、 経営トップが必ずしなければいけない たった1つのこと - 経営トップの仕事 |
https://diamond.jp/articles/-/269441
|
ビジョンを社内に浸透させるために、経営トップが必ずしなければいけないたったつのこと経営トップの仕事ビジョン策定のためには、事業実態を把握することが必須になる。 |
2021-04-25 04:20:00 |
| ビジネス |
ダイヤモンド・オンライン - 新着記事 |
銀行の担保評価と借入のバランスが崩れ、 継続した融資が受けられなくなった場合、 どう対処すればいいのか？ - ハーバード式不動産投資術 |
https://diamond.jp/articles/-/269021
|
銀行の担保評価と借入のバランスが崩れ、継続した融資が受けられなくなった場合、どう対処すればいいのかハーバード式不動産投資術不動産投資で資産を形成するために重要なのは、まずは小さな資産を指数関数的に増やすイメージを掴んでもらうこと。 |
2021-04-25 04:15:00 |
| ビジネス |
ダイヤモンド・オンライン - 新着記事 |
【宇田川元一】 私が「同じ方向を向くことが大切だ」 に強く反論する理由 - 組織が変わる |
https://diamond.jp/articles/-/268567
|
そこで今回、「HRアワード」書籍部門最優秀賞を受賞した『他者と働く』著者・宇田川元一氏が最新刊『組織が変わるー行き詰まりから一歩抜け出す対話の方法on』で、新しい対話の方法「on」を初公開した。 |
2021-04-25 04:10:00 |
| ビジネス |
ダイヤモンド・オンライン - 新着記事 |
ノーベル賞学者が本気で解説！ SF小説に登場する「シリコン生命体」は存在するのか？ - WHAT IS LIFE?（ホワット・イズ・ライフ？）生命とは何か |
https://diamond.jp/articles/-/269395
|
|
2021-04-25 04:05:00 |
| ビジネス |
東洋経済オンライン |
｢合法的無銭飲食｣体験者だけが知る驚きの世界 求めよ､さすれば全て与えられる（byアフロ） | 買わない生活 | 東洋経済オンライン |
https://toyokeizai.net/articles/-/424384?utm_source=rss&utm_medium=http&utm_campaign=link_back
|
東洋経済オンライン |
2021-04-25 04:30:00 |
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