投稿時間:2023-03-16 14:23:13 RSSフィード2023-03-16 14:00 分まとめ(24件)

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IT ITmedia 総合記事一覧 [ITmedia News] 三越伊勢丹、データ分析基盤をOracle Cloudに移行へ 年間の運用コスト44%削減見込み https://www.itmedia.co.jp/news/articles/2303/16/news132.html cloud 2023-03-16 13:19:00
IT ITmedia 総合記事一覧 [ITmedia PC USER] MSI、ゲーミングPC「Aegis Ti5」にRTX 4070 Ti搭載バリエーション構成モデルを追加 https://www.itmedia.co.jp/pcuser/articles/2303/16/news130.html aegisti 2023-03-16 13:15:00
TECH Techable(テッカブル) 手描き感覚で3Dモデル制作。VRNFTアートアプリ「SnowCanvas」β版がリリース https://techable.jp/archives/199991 metaquest 2023-03-16 04:00:30
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 三越伊勢丹、顧客/商品データを管理するOracle Exadataをクラウドに移行、運用費4割削減を見込む | IT Leaders https://it.impress.co.jp/articles/-/24586 三越伊勢丹、顧客商品データを管理するOracleExadataをクラウドに移行、運用費割削減を見込むITLeaders三越伊勢丹ホールディングスは、グループ内の顧客商品データを一元管理するデータ分析基盤を、オンプレミスのOracleExadataからクラウド上のOracleExadataDatabaseServiceに移行する。 2023-03-16 13:06:00
python Pythonタグが付けられた新着投稿 - Qiita Python の asyncio で、別スレッドから Future を完了する https://qiita.com/DJ_Kaosun/items/283cc32c242f666dfbd7 asyncio 2023-03-16 13:51:39
Azure Azureタグが付けられた新着投稿 - Qiita DatadogとAzure Arcの新しいIntegrationについて https://qiita.com/taiponrock/items/65d7a5c7d67cc74f9563 azure 2023-03-16 13:35:32
海外TECH DEV Community Javascript Basic Topics you need to know #1 ( Scope, Hoisting, Temporal Dead Zone) https://dev.to/liobouchan/javascript-basic-topics-you-need-to-know-1-scope-hoisting-temporal-dead-zone-1h9f Javascript Basic Topics you need to know Scope Hoisting Temporal Dead Zone Have you ever felt like your Javascript code was doing weird things or you didn t understand why you have a undefined variable and you made sure to initialize and assign a value to this variable Well in reality there is nothing strange we just forget or do not know some basic and easy principles that I will show below so that you do not forget them again Scope Hoisting and Temporal Dead Zone that s what this post is about ScopeWhat is The scope determines the accessibility of the variables in each part of our code In Javascript we have different types of Scopes Global ScopeA Variable is said to be in global scope when it is declared outside of a function or block We will be able to access these types of variables from any part of our code whether inside or outside a function var name Leonardo The code written in this part will be able to access name function myFunction The code written in this part will also be able to access name Local ScopeThe variables that we define inside a function are local variables that is they are found in the local Scope This means that these types of variables will only live within the function where we have declared them and if we try to access them outside of it these variables will not be defined The code written in this part will NOT be able to access the variable name function myFunction var name Leonardo The code written here can access to the variable Block ScopeUnlike the local scope this scope is limited to the block of code where the variable was defined Since ECMAScript we have the let and const keywords which allow us to have a block scope this means that the variables will only live within the corresponding code block if true this if block does not create a scope variable name is global because of the use of the var keyword var name Leonardo country is in the local scope because of the use of the let keyword let country Mexico language is also a local scope because of the use of the const keyword const language Javascript console log name prints Leonardo console log country Uncaught ReferenceError country is not definedconsole log language Uncaught ReferenceError language is not definedLexical ScopeThe lexical scope means that in a nested group of functions the inner functions have access to the variables and other resources of their parent scope This means that child functions are lexically linked to the execution context of their parents function myFunction var name Leonardo we can t access language from here function parent name is accessible from here language is not accessible function child We can also access name from here var language Javascript HoistingWhat is Conceptually for example a strict definition of hoisting suggests that variable and function declarations are physically moved to the beginning of the code but this is not actually the case What happens is that the declarations of variables and functions are allocated in memory during the compilation phase but they remain exactly where you have written them in the code Example of hoisting with functionhello Leo function hello name console log Hello name Printed Result Hello Leo One of the advantages in JavaScript of hoisting is that it allows you to use a function before declaring it in your code As you can see even though we call the function in the code first before it is written the code still works Temporal Dead ZoneWhat is A temporal dead zone TDZ is the area of a block where a variable is inaccessible until the moment the computer completely initializes it with a value Suppose you attempt to access a variable before its complete initialization In such a case JavaScript will throw a ReferenceError So to prevent JavaScript from throwing such an error you ve got to remember to access your variables from outside the temporal dead zone But where exactly does TDZ Temporal Dead Zone begin and end TDZ start hereconsole log name returns ReferenceError because name TDZ are presentlet name Leonardo TDZ ends TDZ not exist hereHere is how you can access name successfully after its complete initialization let name Leonardo name TDZ ends here console log name returns Leonardo because name TDZ does not exist hereAll temporal dead zone principles of let variables apply also to const However var works differently The main difference between the temporal dead zone of a var let and const variable is when their TDZ ends name TDZ starts and ends here console log name returns undefined because name TDZ does not exist here var name Leonardo name TDZ does not exist here console log name returns Leonardo because name TDZ does not exist hereThe console log statement successfully returned a value undefined because JavaScript automatically assigns undefined to a hoisted var variable In other words when Javascript hoists a var variable it automatically initializes the variable with the value undefined In contrast JavaScript does not initialize a let or const variable with any value whenever it hoists the variable Instead the variable remains dead and inaccessible Therefore a let or const variable s TDZ ends when JavaScript fully initializes it with the value specified during its declaration However a var variable s TDZ ends immediately after its hoisting not when the variable gets fully initialized with the value specified during its declaration ConclusionsThese are basic concepts that many of us are unaware of because we start programming without taking a look at how the language works and we go straight to throwing code but knowing how the language works and knowing these basic concepts will make us better developers to generate best solutions 2023-03-16 04:17:16
海外科学 NYT > Science Covid Worsened a Health Crisis Among Pregnant Women https://www.nytimes.com/2023/03/16/health/covid-pregnancy-death.html Covid Worsened a Health Crisis Among Pregnant WomenIn deaths of pregnant women soared by percent in the United States according to new government figures Here s how one family coped after the virus threatened a pregnant mother 2023-03-16 04:01:14
海外科学 NYT > Science Pregnancy and Covid: What Women Need to Know https://www.nytimes.com/2023/03/16/health/covid-pregnancy-protection.html amplify 2023-03-16 04:01:07
金融 ニッセイ基礎研究所 海外の「成年後見制度」を概観する https://www.nli-research.co.jp/topics_detail1/id=74251?site=nli 具体的には、英国の意思決定支援は、①意思決定能力を有すると推定すること、②本人による意思決定のためにあらゆる措置を講じなければならないこと、③賢明ではない決定をしたという理由のみで意思決定能力と欠くものとして扱ってはならないこと、④意思決定を代行する際には、本人の最善の利益のための決定をしなければならないこと、⑤本人の権利や自由の制限は最小限にとどめるべきであること、の原則を遵守することが求められる図表。 2023-03-16 13:52:08
金融 日本銀行:RSS 実質輸出入の動向 http://www.boj.or.jp/research/research_data/reri/index.htm 輸出入 2023-03-16 14:00:00
海外ニュース Japan Times latest articles Police seek arrest warrant for expelled lawmaker GaaSyy https://www.japantimes.co.jp/news/2023/03/16/national/gaasyy-police-seek-arrest/ Police seek arrest warrant for expelled lawmaker GaaSyyOn Wednesday the Upper House voted to expel GaaSyy from parliament for absenteeism after he failed to attend a single Diet session since being elected 2023-03-16 13:50:21
海外ニュース Japan Times latest articles Japan sends missile units to southwestern island to face China threat https://www.japantimes.co.jp/news/2023/03/16/national/gsdf-ishigaki-deployment/ okinawa 2023-03-16 13:02:22
海外ニュース Japan Times latest articles Aaron Rodgers says he wants to play for Jets in 2023 https://www.japantimes.co.jp/sports/2023/03/16/more-sports/football/aaron-rodgers-new-york-jets-nfl/ aaron 2023-03-16 13:06:58
ビジネス ダイヤモンド・オンライン - 新着記事 【社説】クレディ・スイスに及んだパニック - WSJ発 https://diamond.jp/articles/-/319634 社説 2023-03-16 13:10:00
ビジネス ダイヤモンド・オンライン - 新着記事 米金利低下、銀行の頭痛の種に - WSJ発 https://diamond.jp/articles/-/319635 頭痛 2023-03-16 13:05:00
ビジネス プレジデントオンライン なぜ着けなくてもいいのに着けるのか…大学生が「自宅でのリモート授業」でもマスクを着用するワケ - 多くの日本人はもう、マスクをはずしたくない https://president.jp/articles/-/67322 人間関係 2023-03-16 14:00:00
マーケティング MarkeZine ネオマーケティング、ChatGPTなどで作成された記事のチェック&リライトサービスを開始 http://markezine.jp/article/detail/41703 chatgpt 2023-03-16 13:30:00
IT 週刊アスキー 本体を取り外して、自由に入れ替えられるスマートウォッチ「HUAWEI WATCH GT Cyber」登場 https://weekly.ascii.jp/elem/000/004/128/4128903/ huaweiwatchgtcyber 2023-03-16 13:55:00
IT 週刊アスキー ウェンディーズ・ファーストキッチン、新レギュラーメニュー「ディップポテト」ソースは4種 https://weekly.ascii.jp/elem/000/004/128/4128901/ 販売 2023-03-16 13:50:00
IT 週刊アスキー 日本丸メモリアルパークにて「横浜DeNAベイスターズ出陣式2023~横浜頂戦~」3月23日17時30分より開催 https://weekly.ascii.jp/elem/000/004/128/4128868/ 日本丸メモリアルパーク 2023-03-16 13:45:00
IT 週刊アスキー バーガーキング、社運をかけて開発した新商品「BigBet(ビッグベット)」味の決め手は「特製オーロラソース」 https://weekly.ascii.jp/elem/000/004/128/4128899/ bigbet 2023-03-16 13:40:00
IT 週刊アスキー 牛角「春の超カルビ祭り」3月23日~4月16日開催 希少部位使用「牛角超(ウルトラ)カルビ」も注文可能 https://weekly.ascii.jp/elem/000/004/128/4128895/ 食べ放題 2023-03-16 13:20:00
IT 週刊アスキー 植物性食材でフィッシュバーガーを再現! モスバーガー「ソイシーバーガー ~ソイのおさかな風フライ~」 https://weekly.ascii.jp/elem/000/004/128/4128888/ 期間限定 2023-03-16 13:10:00

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