投稿時間:2021-06-28 14:38:28 RSSフィード2021-06-28 14:00 分まとめ(46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	Engadget Japanese	アップル、ペースメーカーと安全な距離をおくべき製品リストを公開	https://japanese.engadget.com/apple-share-list-safe-distance-pacemakers-043012556.html	医療機器	2021-06-28 04:30:12
TECH	Engadget Japanese	レノボのスマート置き時計 Smart Clock 2 発表、MagSafe対応 Qi充電パッドと合体	https://japanese.engadget.com/levono-smart-clock-2-040243917.html	magsafe	2021-06-28 04:02:43
TECH	Engadget Japanese	製品名もない激安ウェブカメラ、買ってみたら広視野角で三脚穴もあって“当たり”でした｜買い物レビュー日記	https://japanese.engadget.com/mini-review-webcamera-040038554.html	engadget	2021-06-28 04:00:38
ROBOT	ロボスタ	横浜・みなとみらいに巨大な恐竜が出現 「XR CHANNEL」と「DinoScience 恐竜科学博」がコラボレーション	https://robotstart.info/2021/06/28/minatomirai-ar-dinosaur.html	xrchann	2021-06-28 04:47:29
ROBOT	ロボスタ	コマツ「スマートコンストラクション」でDXを推進　1万4千件超の建設現場に導入　システムの流れとAWSを採用した理由を公開	https://robotstart.info/2021/06/28/komatsu-aws-smacon.html	建設現場	2021-06-28 04:20:30
IT	ITmedia 総合記事一覧	[ITmedia Mobile] LenovoがAndroidタブレットの新モデルを投入　モバイルディスプレイとして使える「Yoga Tab 13」など	https://www.itmedia.co.jp/mobile/articles/2106/28/news095.html	yogatab	2021-06-28 13:30:00
IT	ITmedia 総合記事一覧	[ITmedia ビジネスオンライン] アサヒグループ、三陽商会と衣食分野でコラボ　サステナブルなライフスタイルを提案	https://www.itmedia.co.jp/business/articles/2106/28/news092.html	black	2021-06-28 13:21:00
TECH	Techable（テッカブル）	ゴルフ場送迎シャトル「nearMe.Golf」ローンチ！ 千葉県中心に都内23区まで	https://techable.jp/archives/157234	nearmegolf	2021-06-28 04:00:42
IT	情報システムリーダーのためのIT情報専門サイト IT Leaders	創販、ガスボンベの残量をIoTセンサーで計測する「ボンベ残圧監視システム」を構築 | IT Leaders	https://it.impress.co.jp/articles/-/21688	創販、ガスボンベの残量をIoTセンサーで計測する「ボンベ残圧監視システム」を構築ITLeadersプラントや工場の計装エンジニアリングを手がける創販は、産業用ガスボンベの残圧をIoTセンサーで自動計測する「ボンベ残圧監視システム」を構築した。	2021-06-28 13:51:00
AWS	AWS Japan Blog	週刊AWS – 2021/6/21週	https://aws.amazon.com/jp/blogs/news/aws-weekly-202106121/	「AWSBuildersOnlineSeries」というAWSの各領域の基礎にフォーカスしたコンテンツを時間に詰め込んだイベントがワールドワイドで開催されているのですが、日本では月日にオンラインで開催される事になりました。	2021-06-28 04:34:45
python	Pythonタグが付けられた新着投稿 - Qiita	【IQ Bot】カスタムロジック：Splitの根拠になる項目が変動する場合（備忘メモ）	https://qiita.com/IQ_Bocchi/items/17d21d9a21f29c362a16	【IQBot】カスタムロジックSplitの根拠になる項目が変動する場合備忘メモ解説なしで、本当に備忘メモだけのページです。	2021-06-28 13:41:44
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	エラー「ArgumentException: method return type is incompatible」について	https://teratail.com/questions/346533?rss=all	エラー「ArgumentExceptionmethodreturntypeisincompatible」について前提・実現したいこと。	2021-06-28 13:59:43
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	特定のcheckboxを指定する	https://teratail.com/questions/346532?rss=all		2021-06-28 13:52:33
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	配列の完全な初期化について	https://teratail.com/questions/346531?rss=all	タイトルの通りなのですが、サンプルコードのようにResultを完全に初期化してIsArrayResultをFalseにしたいです。	2021-06-28 13:51:06
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	for if文内の処理について	https://teratail.com/questions/346530?rss=all	forif文内の処理について前提・実現したいことスプレッドシートにあるquot見積発行quotシートで更新した情報をquotDBquotシートの同じ見積番号がある行に上書き、見積番号が無ければquotDBquotシートの最終行に追加するスクリプトを書いています。	2021-06-28 13:38:39
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	Google Driveでフォルダ内のファイルが更新されたら、フォルダのURLをメール通知を送りたい	https://teratail.com/questions/346529?rss=all	GoogleDriveでフォルダ内のファイルが更新されたら、フォルダのURLをメール通知を送りたい下記のプログラムで運用をしていましたが、この結果に追加されたフォルダ自体のURLも取得したいと考えております。	2021-06-28 13:12:23
Ruby	Rubyタグが付けられた新着投稿 - Qiita	ネスト外のresources	https://qiita.com/yun02850266/items/50914686be85cece1726	ネスト外のresourcesroutesrbconstraintshostconfigadminhostdonamespaceadminpathconfigadminpathdoroottopindexgetlogingtsessionsnewasloginresourcesessiononlycreatedestroyresourcesstaffmembersdoresourcesstaffeventsonlyindexendendendadminstaffeventsのprefixが生成されていないことを疑いました。	2021-06-28 13:30:35
AWS	AWSタグが付けられた新着投稿 - Qiita	NATGWを使いプライベートサブネット内のEC2インスタンスでyum updateする	https://qiita.com/nakashooon/items/b77103592dd5433bc247	パブリックサブネット内のECインスタンス⇒パブリックaプライベートサブネット内のECインスタンス⇒プライベートa・プライベートサブネット内からインターネットに接続する方法は他にもあり、今回作成する構成はあまりコスト効率が良くないため機能テストくらいに思っていただけると幸いです。	2021-06-28 13:21:49
技術ブログ	Developers.IO	[レポート]マネーフォワードが実践する「SSOT」とデータの民主化に向けた取り組み #Looker #BEACONJapan	https://dev.classmethod.jp/articles/looker-beacon-2021-moneyforward/	lookerbeaconjapan	2021-06-28 04:40:34
海外TECH	DEV Community	JavaScript Event Loop	https://dev.to/thecuriouscoder/javascript-event-loop-51cc	JavaScript Event LoopSometime back I started learning about JavaScript and React JS internals My goal is to understand the internals of JavaScript and frameworks In my last article I wrote about ReactJS internals To understand more about React Fiber we need to understand some preliminary JavaScript concept implementation In the next three posts I will be explaining in detail the following three conceptsJavaScript Event LooprequestAnimationFrame and rendering cyclerequestIdleCallBackIn this article I will attempt to document my learning about Event Loop This topic might be particularly interesting to people who want to learn how NodeJS and Deno internals work The next two topics are interesting to me for understanding how React works internally for code base understanding So let s dive deep JavaScript Execution EnvironmentJavaScript is a single threaded language It executes one method at a time Following high level components are integral to its execution environment Call StackJob QueuesRendering StepMicrotasksEvent LoopsNote I have used runtime environment and execution environment interchangeably At some points I have used EcmaScript references I am finding EcmaScript standards quite interesting So I thought to include those as well Call StackLike other languages like C C etc JavaScript uses a Call Stack to execute methods Whenever it decides to execute a method it wraps the method in a stack frame and pushes the frame into the Call Stack For any eventual sub method calls it keeps on pushing sub methods into the stack LIFO order Once a method is executed the corresponding stack frame is popped Call Stack is an integral part of JavaScript for synchronous programming test function test console log Test entry test console log Test exit function test console log Test entry console log Test exit For the above script the result is as same as predicted Test entryTest entryTest exitTest exitBut JavaScript supports asynchronous programming We can use setTimeout to execute something in the future like the below example We could use the following code snippet that might trigger an alert and console log after s test function test console log Test entry setTimeout test console log Test exit function test console log Test entry alert Test execution As expected the result is Well there was an alert as well Following is the timeline of eventsWe can see the Install Timer at the bottom left This is where the timer was installed to be fired after seconds ms It seems some thread is running in the background Hold on Did I not mention JavaScript is single threaded Let s see what could happen if JavaScript is multi threaded Suppose in our hypothetical model for the above JavaScript code execution we are allowed to spawn a new thread for executing a single setTimeout So for one thousand setTimeout calls we have a thousand threads Each thread might attempt to change DOM as well independently Now if DOM is a shared resource for all the threads multiple threads are bound to create chaos reading it at the same time We would have spent most of our time debugging race conditions rather than building rich applications So yes JavaScript is single threaded and it has served JavaScript and us well How come JavaScript schedule setTimeout callback after s then if there is no thread The answer is Job or Task Queue I am using both names interchangeably Job QueueWith Es the concept of Job Queue has been introduced All the asynchronous tasks such as Mouse click setTimeouts etc are pushed into the Job Queue for execution JavaScript engine picks up tasks one by one and executes them using Call Stack FIFO order What part of the JavaScript engine picks up tasks from Task Queue The Event Loop It runs in a loop throughout the life cycle of the app It picks up tasks from the Task Queue and executes them with the help of Call Stack Note My guess is the browser might maintain different queues for different kinds of event handling such as button clicks mouse clicks setTimeout calls etc Each browser can have different prioritization for each queue It is just my guess I am looking for ways to confirm that I might write about that in the future What does the Event Loop do when there is nothing in Call Stack and Task Queue You guessed it right it runs in a loop How does the Event Loop know if it needs to execute something from Task Queue The Browser engine can enqueue a task in the relevant queue The Event Loop in the next rotation can dequeue the task and execute it What happens if we encounter an infinite loop lt body gt lt button id demo gt Trigger Alert lt button gt lt body gt lt script gt document getElementById demo addEventListener click gt console log Clicked while true console log After loop is executed lt script gt In the above example the button click will enqueue the above synchronous script in Task Queue In the next rotation the Event Loop starts executing the task Now our script is stuck with infinite while loop As a result the Event Loop is stuck in the same position because of our infinite loop Rendering StepLet s look into another aspect of the JavaScript runtime environment the Rendering Step Let s take the following example lt body gt lt p id test paragraph gt Test JS Hello lt p gt lt button onclick changeParagraphColor gt Trigger Alert lt button gt lt body gt lt script gt function changeParagraphColor document getElementById test paragraph style background red var top nested for var i i lt top i for var j j lt nested j console log i j console log Changing color document getElementById test paragraph style background blue lt script gt In the browser we can see the following output In the above example the background color of the paragraph is changed to blue after the execution of the loop The red background never takes effect If I remove line I can see the red paragraph but after the execution of the script including the loop I expected to see first a paragraph with red background and then a blue But I only saw blue background Here we are seeing the UI effect for the last line but not the previous UI change Why is that That is because of the Rendering Step The browser does not repaint the screen after the execution of each JavaScript code It executes the above JavaScript code and collects all styling and UI changes It applies final change in this case line in a single shot afterward in the Rendering step It is a step in the Event Loop that is executed independently And initially I thought the changes are happening so fast that my eyes could not catch them I will dive into the Rendering step in my next post MicrotasksFor now I am associating Microtasks with JavaScript Promises Promises are used to perform asynchronous operations in JavaScript If you want to know more about Promises visit this page for more details The tasks executed inside Promise are called Microtasks Following is an example lt body gt lt button id demo gt Trigger Alert lt button gt lt body gt lt script gt document getElementById demo addEventListener click gt Promise resolve then gt console log Micro Task console log Task lt script gt The above example will print the following output as expected Microtask will be executed after all the synchronous tasks are executed Task Micro Task Let s look into another interesting example lt body gt lt button id demo gt Trigger Alert lt button gt lt body gt lt script gt document getElementById demo addEventListener click gt Promise resolve then gt console log Micro Task console log Task document getElementById demo addEventListener click gt Promise resolve then gt console log Micro Task console log Task lt script gt Try guessing the output take seconds If you guess the following output it s perfectly alright It is natural intuitive and we are human Task Task Micro Task Micro Task But the answer isTask Micro Task Task Micro Task If you thought of the above answer Congratulations How microtasks are executed Micro tasks are executed in two situationsAt the end of the synchronous script execution If the Call Stack is empty For handling microtasks JavaScript maintains another queue Microtask Queue For each call to Promise an entry for each microtask is pushed into Microtask Queue So for the above example the following will be the orderTask got pushed into Call Stack for synchronous execution Also Microtask is enqueued in the Microtask Queue After execution of Task the Call Stack gets empty So it s the microtask time condition above If there were any other synchronous calls Microtask would have been picked up after execution of those Microtask Queue is dequeued and the Microtask gets executed After step the second handler gets called by Event Loop The same thing repeats for the second microtask What are Event Loops I know you might be thinking what am I talking about for this long Nowadays all browsers create a separate event loop for each browser tab Collectively these are called Event Loops At first Chrome started doing this Others followed soon Impact of Event LoopsI have seen one unresponsive page causing the entire browser to get stuck in Firefox s earlier version I have never seen this issue with Chrome Chrome has a separate JavaScript environment for each tab from early versions I believe The browser might require more resources to do this But I think it is worth the better and richer experience Interesting Use case Opening a page in a separate new tabLet s assume for the below three examples target page contains an infinite loop lt a href target page target blank gt New Target Page lt a gt For the earlier version browser for the above scenario the target page and current page used to share the same Event Loop for all the JavaScript tasks As a result if the target page is containing an infinite loop both the current and target page got stuck in an infinite loop as well Both the pages used to become unresponsive The workaround proposed lt a href target page target blank rel noopener gt New Tab lt a gt Upon setting rel noopener each page gets separate environment It was introduced to reduce the impact of untrusted pages containing malicious JavaScript which might affect the current page Now all the browsers have started implementing this behavior by default relevant MDN doc I have tested with the latest Chrome It is implemented there Also for this example lt a href target page gt New Tab lt a gt If you open target page in a new tab by right click on the mouse both the pages share the same JavaScript runtime environment So if target page has an infinite loop both the pages get stuck ConclusionThe Event Loop is an interesting and critical component for understanding any JavaScript run time environments I am building up my knowledge on React JS and Node JS internals upon this If you have enjoyed the article do give me thumbs up In case of any questions let me know in the comments Happy learning References for further readingEcmaScript Standard EcmaScript standard has documentation around how each component such as Job Queues Call Stack should be implemented I find these details particularly interesting	2021-06-28 04:01:19
Apple	AppleInsider - Frontpage News	24-hour Deal Zone: Apple Mac mini drops to $529	https://appleinsider.com/articles/21/06/28/24-hour-deal-zone-apple-mac-mini-drops-to-529?utm_medium=rss	hour Deal Zone Apple Mac mini drops to Today only Apple Authorized Reseller B amp H Photo is knocking off the Space Gray Intel Mac mini delivering the cheapest Mac mini deal available Flash Mac mini discountThe Apple DealZone at B amp H Photo features the Intel Mac mini with a quad core GHz Intel Core i processor with GB of RAM and a GB SSD Normally retailing for the discount is valid on June only through p m Eastern or while supplies last Read more	2021-06-28 04:35:13
海外TECH	Engadget	Lenovo's Yoga Tab 13 and 11 have kickstands that double as hangers	https://www.engadget.com/lenovo-yoga-tab-13-tab-11-tablets-040041606.html?src=rss_b2c	congress	2021-06-28 04:00:41
海外TECH	Engadget	Lenovo’s $90 Smart Clock 2 includes a wireless charging pad	https://www.engadget.com/lenovo-smart-clock-2-hands-on-price-specs-availability-040032727.html?src=rss_b2c	clock	2021-06-28 04:00:32
医療系	医療介護 CBnews	ワクチン接種で診療所開設、定款など変更手続き不要-コロナ特例	https://www.cbnews.jp/news/entry/20210628125834	医療法人	2021-06-28 14:00:00
金融	ニッセイ基礎研究所	コロナ克服前の日本経済に新たな試練～資源価格高騰で膨らむ所得流出額～	https://www.nli-research.co.jp/topics_detail1/id=68117?site=nli	世界経済の好調を反映し輸出物価も上昇しているが、年月は前年比と輸入の伸びは大きく下回っている。	2021-06-28 13:58:10
金融	ニュース - 保険市場TIMES	東京海上日動、練馬区へワクチン接種会場の無償提供	https://www.hokende.com/news/blog/entry/2021/06/28/140000	同社はワクチンの迅速かつ円滑な接種を支援するために同社保有の「東京海上日動石神井スポーツセンター」を練馬区に無償提供、今後、練馬区で実施している集団接種の会場の一つとして活用してもらう予定である。	2021-06-28 14:00:00
ニュース	BBC News - Home	Covid-19: Defence secretary and military heads self-isolate	https://www.bbc.co.uk/news/uk-57633381	forces	2021-06-28 04:11:17
ニュース	BBC News - Home	Outbreaks emerge across Australia in 'new phase' of pandemic	https://www.bbc.co.uk/news/world-australia-57633457	different	2021-06-28 04:40:48
ニュース	BBC News - Home	'Black rainstorm' warning delays Hong Kong trading	https://www.bbc.co.uk/news/business-57633696	black	2021-06-28 04:15:02
ビジネス	ダイヤモンド・オンライン - 新着記事	ワクチン接種率の低さ、世界経済に長期的影響も - WSJ発	https://diamond.jp/articles/-/275283	世界経済	2021-06-28 13:08:00
GCP	Google Cloud Platform Japan 公式ブログ	Dataproc ベスト プラクティス ガイド	https://cloud.google.com/blog/ja/topics/developers-practitioners/dataproc-best-practices-guide/	Dataprocを使用する際は、ラベルを使用してクラスタプールを構築してください。	2021-06-28 05:00:00
北海道	北海道新聞	ＮＢＡ、バックスが２勝目　プレーオフ東決勝、ホークス下す	https://www.hokkaido-np.co.jp/article/560626/	決勝	2021-06-28 13:19:00
北海道	北海道新聞	相模原市役所前でパラリンピック聖火　やまゆり園から変更	https://www.hokkaido-np.co.jp/article/560619/	市役所前	2021-06-28 13:11:09
北海道	北海道新聞	夏の高校野球支部予選・６月２８日の試合結果	https://www.hokkaido-np.co.jp/article/560524/	夏の高校野球	2021-06-28 13:04:13
北海道	北海道新聞	函館初の小中一貫義務教育学校「戸井学園」　清掃、部活　異学年交流を推進　「中１ギャップ」解消低学年から教科担任導入	https://www.hokkaido-np.co.jp/article/560220/	函館市内	2021-06-28 13:10:05
北海道	北海道新聞	買物公園彩る　旭川で花の展覧会	https://www.hokkaido-np.co.jp/article/560221/	北の大地	2021-06-28 13:09:55
北海道	北海道新聞	男性の川転落死、暴行疑い　１６歳逮捕「ふざけ合った」	https://www.hokkaido-np.co.jp/article/560618/	東京都葛飾区	2021-06-28 13:05:00
北海道	北海道新聞	大阪市のホテルから出火　１人搬送、逃げ遅れなし	https://www.hokkaido-np.co.jp/article/560617/	大阪市淀川区西中島	2021-06-28 13:05:00
IT	週刊アスキー	ドコモのFOMAプラスエリア非対応機種、2022年1月から一部のエリアで通話・通信が不可に	https://weekly.ascii.jp/elem/000/004/060/4060571/	第三世代	2021-06-28 13:30:00
IT	週刊アスキー	LINE公式アカウントを活用したスマートロックの予約・解錠・決済システム	https://weekly.ascii.jp/elem/000/004/060/4060575/	connecteddesign	2021-06-28 13:30:00
IT	週刊アスキー	日本中から小鳥にまつわるグッズが大集結！ 小田急百貨店新宿店「新宿ことり博」6月30日から開催	https://weekly.ascii.jp/elem/000/004/060/4060589/	小田急百貨店	2021-06-28 13:30:00
IT	週刊アスキー	ローソン×ゴディバの名作が復刻「ショコラロールケーキ」と「テリーヌショコラ」	https://weekly.ascii.jp/elem/000/004/060/4060574/	godiva	2021-06-28 13:15:00
IT	週刊アスキー	スマホ向け新作『聖剣伝説 ECHOES of MANA』発表！歴代キャラが登場するオールスターRPG	https://weekly.ascii.jp/elem/000/004/060/4060576/	echoesofmana	2021-06-28 13:15:00
マーケティング	AdverTimes	カンヌライオンズ最終日、フィルム部門グランプリはラコステ、ナイキ、「#WOMBSTORIES」はさらに2つのグランプリを獲得	https://www.advertimes.com/20210628/article356105/	developmentgoalslions	2021-06-28 04:30:29
マーケティング	AdverTimes	戦略的にPDCAを回すポスティングの有用性	https://www.advertimes.com/20210628/article355911/	活用	2021-06-28 04:15:15
GCP	Cloud Blog JA	Dataproc ベスト プラクティス ガイド	https://cloud.google.com/blog/ja/topics/developers-practitioners/dataproc-best-practices-guide/	Dataprocを使用する際は、ラベルを使用してクラスタプールを構築してください。	2021-06-28 05:00:00