投稿時間:2021-08-02 22:33:13 RSSフィード2021-08-02 22:00 分まとめ(38件)

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AWS	lambdaタグが付けられた新着投稿 - Qiita	CDKでThe expected type comes from property 'timeout' which is declared here on type 'FunctionProps'が出た	https://qiita.com/higuuu/items/d74db473416a88e61938	CDKでTheexpectedtypecomesfrompropertyxtimeoutxwhichisdeclaredhereontypexFunctionPropsxが出た問題CDKでAPIを作成しておりLambdaにtimeoutの設定をしたら下記のようなエラーが表示されビルドできないTheexpectedtypecomesfrompropertytimeoutwhichisdeclaredhereontypeFunctionPropsまたリファレンスを幾ら見ても使い方に誤りは見受けられなかった。	2021-08-02 21:15:51
python	Pythonタグが付けられた新着投稿 - Qiita	plotly で日付が密になる場合の回避方法	https://qiita.com/yamadasuzaku/items/d51635683f322663f0a5	このようにplotlyが受け付ける日付フォーマットに変換すれば、書式は特に指定しなくても、変な密な表示にはならない。	2021-08-02 21:56:23
python	Pythonタグが付けられた新着投稿 - Qiita	TabNetを使う（回帰編）	https://qiita.com/maskot1977/items/5de6605806f8918d2283	TabNetを使う回帰編テーブルデータの機械学習モデルとして注目されているTabNetなるものを、私も使ってみようとしました。	2021-08-02 21:46:56
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	python format()で桁数指定を数字でする場合、文字列化するほかに方法はありますか？（小数点以下の型「f」での桁数指定ではないです）	https://teratail.com/questions/352456?rss=all	pythonformatで桁数指定を数字でする場合、文字列化するほかに方法はありますか小数点以下の型「f」での桁数指定ではないです質問printquotquotformatquotabcdequotnbspnbspnbspnbspnbspaposabaposのように文字数の数を指定しているように、数字でも同様に数を指定できる方法を教えてください。	2021-08-02 21:57:18
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	Laravelの正しいデプロイ方法について。ロリポップ＋Apache環境	https://teratail.com/questions/352455?rss=all	Laravelの正しいデプロイ方法について。	2021-08-02 21:45:00
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	Python3 Tkinter ボタンを押したら実行中アプリウィンドウを最前面に移動したい	https://teratail.com/questions/352454?rss=all	・IEを閉じた後、ボタンを押したらまたIE起動。	2021-08-02 21:41:39
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	firefoxでのposition:absoluteのずれ	https://teratail.com/questions/352453?rss=all	firefoxでのpositionabsoluteのずれfirefoxでのpositionabsoluteを設定した際に他ブラウザと若干異なる表示になってしまいます。	2021-08-02 21:30:16
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	デバッグの頻度について	https://teratail.com/questions/352452?rss=all	頻度	2021-08-02 21:16:45
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	【Vue.js】確認モーダルを表示させた後に削除する方法	https://teratail.com/questions/352451?rss=all	【Vuejs】確認モーダルを表示させた後に削除する方法概要現在、画像のような一覧画面から削除ボタンクリックでquotそのままquot削除する実装になっています。	2021-08-02 21:15:53
Ruby	Rubyタグが付けられた新着投稿 - Qiita	binding.pryを使えるようになりたい！２	https://qiita.com/mkato1013/items/e1c76327bbacbd53b908	「false」だった場合で、エラーの内容を確認したい時は、errorsfullmessagesを記述しましょう。	2021-08-02 21:50:56
Ruby	Rubyタグが付けられた新着投稿 - Qiita	Railsの環境構築	https://qiita.com/minhee/items/6ccd8ff0f55d8ee6bf44	インストールしたRubyを使用するために下記コマンドを実行します。	2021-08-02 21:44:58
AWS	AWSタグが付けられた新着投稿 - Qiita	CDKでThe expected type comes from property 'timeout' which is declared here on type 'FunctionProps'が出た	https://qiita.com/higuuu/items/d74db473416a88e61938	CDKでTheexpectedtypecomesfrompropertyxtimeoutxwhichisdeclaredhereontypexFunctionPropsxが出た問題CDKでAPIを作成しておりLambdaにtimeoutの設定をしたら下記のようなエラーが表示されビルドできないTheexpectedtypecomesfrompropertytimeoutwhichisdeclaredhereontypeFunctionPropsまたリファレンスを幾ら見ても使い方に誤りは見受けられなかった。	2021-08-02 21:15:51
AWS	AWSタグが付けられた新着投稿 - Qiita	CDKでthis CDK CLI is not compatible with the CDK library used by your application. Please upgrade the CLI to the latest version. (Cloud assembly schema version mismatch: Maximum schema version supported is 7.0.0, but found 13.0.0)	https://qiita.com/higuuu/items/c4872a33b771c8346b31	CDKでthisCDKCLIisnotcompatiblewiththeCDKlibraryusedbyyourapplicationPleaseupgradetheCLItothelatestversionCloudassemblyschemaversionmismatchMaximumschemaversionsupportedisbutfound問題CDKでデプロイしようとしたところ下記のようなエラーが表示されたhisCDKCLIisnotcompatiblewiththeCDKlibraryusedbyyourapplicationPleaseupgradetheCLItothelatestversionCloudassemblyschemaversionmismatchMaximumschemaversionsupportedisbutfound解決策とりあえずawscdkのバージョンアップを行うことで解決グローバルでawscdkを扱うのはあまり良くないが急ぎなのでまあしょうがない。	2021-08-02 21:15:14
AWS	AWSタグが付けられた新着投稿 - Qiita	40 代おっさん 冗長性のあるブログサービスを構築してみた	https://qiita.com/kou1121/items/1e2660087e09f0070a6d	AWSマネジメントコンソールからRDSを選択左ペインよりスナップショットを選択チェックボックスにチャック赤枠次はアクションを開いてスナップショットを復元をクリック青枠スナップショット復元メニュになると思いますエンジンはMySQLCommunity設定の箇所DBインスタンス識別子database前回と合わせますVPCはMyVPCサブネットグループはmysubnetgroupパブリックアクセスなしにするVPCセキュリティグループ新規作成にしてRDSSG自分はセキュリティグループ消してしまい作りましたがもし残っていれば既存の選択でデータベースポートDBインスタンスクラスはバースト可能クラスを選択以前の世代のクラスを含めるボタンを押してくださいdbtmicroになっているのを確認ストレージタイプ汎用SSDストレージ割り当て可用性と耐久性ですがあとでマルチAZ有効かしますが今は復元なのでスタンバイインスタンスを作成しないでくださいにラジオボタンがついていることを確認アベイラビリティーゾーンapnortheastaあとはそのままで大丈夫です下にあるDBインスタンスの復元を押してくださいステータスの状態が利用可能の状態になるまで待ってくださいAWSマネジメントコンソールからECを選択左ペインよりインスタンスを選んでくださいWebServerを確認するとステータスチェックを見るとのチェックに合格しましたとなっていれば大丈夫です念のためにパブリックIPvアドレスをコピーしてブラウザーのURL欄にに貼り付けてみてくださいブログが閲覧できるはずですトップページを編集するこちらは普通は必要ありませんが今回はテストのため冗長化できているか確かめるために行いますECにssh接続でログインしてみてくださいわからなければを見てくださいまずは管理者権限にスイッチsudosucdコマンドで移動しますllコマンドで確認cdvarwwwhtmlllここでファイルを書き換えたいと思いますviエディタを使うと良いのですが・・・むずかしいためnanoエディタを使いたいと思いますnanoindexphp開いたらecholtpgtWebServerltpgt赤枠保存して閉じてくださいパブリックIPvアドレスをコピーしてブラウザーのURL欄にに貼り付けて見ると上のほうにWebserverとなっていますではではここまで言ったらイメージを作りたいと思います。	2021-08-02 21:01:45
Docker	dockerタグが付けられた新着投稿 - Qiita	Rustとactix_webでWebアプリケーションを作ってみる	https://qiita.com/c3drive/items/71dda219f0193ae72069	templatehtmlに渡すデータを構造体で定義mainrc抜粋structTodoEntryidutextStringtemplatehtmlは、deriveTemplateとして定義します。	2021-08-02 21:31:27
Git	Gitタグが付けられた新着投稿 - Qiita	git stashでコンフリクトが起きたときの対処	https://qiita.com/daiju81/items/e2fbaf5e4a069b33fd7c		2021-08-02 21:40:06
Ruby	Railsタグが付けられた新着投稿 - Qiita	binding.pryを使えるようになりたい！２	https://qiita.com/mkato1013/items/e1c76327bbacbd53b908	「false」だった場合で、エラーの内容を確認したい時は、errorsfullmessagesを記述しましょう。	2021-08-02 21:50:56
Ruby	Railsタグが付けられた新着投稿 - Qiita	Railsの環境構築	https://qiita.com/minhee/items/6ccd8ff0f55d8ee6bf44	インストールしたRubyを使用するために下記コマンドを実行します。	2021-08-02 21:44:58
海外TECH	DEV Community	vsCode Emmet cheatsheet	https://dev.to/computergeek/vscode-emmet-cheatsheet-1mmf	vsCode Emmet cheatsheet Boilerplate lt DOCTYPE html gt lt html lang en gt lt head gt lt meta charset UTF gt lt title gt Document title gt head gt lt body gt lt body gt lt html gt basic elements section lt section gt lt section gt example lt div class example gt lt div gt section intro lt section id intro gt lt section gt p gt lorem lt p gt Lorem ipsum dolor sit ametconsectetur adipisicing elit Neque facere lt p gt section intro gt container lt section id intro gt lt div class container gt lt div gt lt section gt p your custom text lt p gt your custom text lt p gt link css lt link rel stylesheet href style css gt script src lt script src gt lt script gt h p p lt h gt lt h gt lt p gt lt p gt lt p gt lt p gt ul gt li p lt ul gt lt li gt lt li gt lt li gt lt li gt lt li gt lt li gt lt ul gt lt p gt lt p gt lt p gt lt p gt lt p gt lt p gt ul gt li lt ul gt lt li gt lt li gt lt li gt lt li gt lt li gt lt li gt lt li gt lt li gt lt ul gt h ul gt li h lt h gt lt h gt lt ul gt lt li gt lt li gt lt li gt lt li gt lt li gt lt li gt lt ul gt lt h gt lt h gt li list item lt li class list item gt lt li gt lt li class list item gt lt li gt lt li class list item gt lt li gt	2021-08-02 12:54:09
海外TECH	DEV Community	JavaScript (Lexical Structure)	https://dev.to/cleancodestudio/javascript-lexical-structure-3g32	JavaScript Lexical Structure ltag user id follow action button background color d important color ffffff important border color d important Clean Code StudioFollow Clean Code Clean Life Simplify The Lexical Structure of a software language Specifies a set of basic rules defining how code should or could be written As one of the world s most misunderstood programming language as well as a software language with some weird oddities there are many questions that come up about what is best practice when it comes to writing JavaScript In this blog we re going to dive into the Lexical structure of JavaScript Lexical Structure simply specifies a set of basic rules defining how code should be written in a given language UnicodeJavaScript is written in Unicode What s this mean Well one of the cool lesser used and generally considered a poor or bad practice is that we can actually use emojis as variable names We can use emojis as variable names because JavaScript is written in Unicode More importantly you can write identifiers in any language for example Japanese or Chinese with some rules Optional SemicolonIn JavaScript and most other languages the semicolon is used to separate one given statement from another What s weird about JavaScript is that this semi colon is optional Personally I opt out of using the semi colon and just write my statements on two separate lines Any two statements that are written on the same line will always need to utilize a semi colon to separate them but this in itself is considered bad practice Whitespaces and Line BreaksIn JavaScript white space is NOT considered as anything meaningful Spaces and line breaks can be added as you see fit For exampleaxios get endpoint then response gt console log response catch errors gt console error errors can also be written asaxios get endpoint then response gt console log response catch errors gt console error errors or asaxios get endpoint then response gt console log response catch errors gt console error errors JavaScript doesn t care about the white space Personally I ll go about the former statement using the following syntax axios get endpoint then response gt console log response catch errors gt console error errors In the real world you ll definitely want to keep a well defined style and adhere to that commonly used style You can and in larger project should enforce this style using a linter or a styling tool like Prettier Case SensitiveJavaScript is case sensitive What s this mean for a software language If you have two variables spelling the same word and one is capitalized while the other is not then these are considered two different variables let helloWorld example let HelloWorld heyooo HelloWorld and helloWorld are two different variables because JS is case sensitive Keywords variables function names and other identifiers must always be typed with a consistent capitalization of letters to be or mean the same thing CommentsGood old comments In JavaScript we have two types of comments we can utilize or call upon to add notes that are functionally meaningful within our code Single Line Comments this is a single line commentMultiple Line Comments This is a multiple line comment that we can use to write a lot of stuff when we need to Literals and IdentifiersLiterals are defined as a value that is written within the source code For example a string a number a Boolean an object literal or an array literal are all literals a number literaltrue a Boolean literal hey a string literal an array literal name sarah an object literalAn identifier is simply a sequence of characters used to identify a variable function or an object An identifier can start with a letter dollar sign underscore and may also contain digits Using unicode a letter can be considered any allowed char thus we can also use an emoji Another way to understand what an identifier means is to simply ask yourself what allowed variables names can I use in this language NamenameNAME name nameAre all allowed variable names aka allowed identifiers within JavaScript Reserved WordsMost if not every software language has a list of reserved words These reserved words do special things that allow the software language to work properly In JavaScript we have a list of Reserved Words that are not allowed to be used as identifiers due to the language saving these words to implement special functionality Some Reserved Words in JavaScript include abstractargumentsbooleanbreakbytecasecatchcharclassconstcontinuedebuggerdefaultdeletedodoubleelseenumevalexportfloatextendsfalsefunctionfinalgotoiffinallyfloatimplementsyieldimportin instanceofintinterfaceletpackageprivatelangnativenewnullprotectedpublicreturnshortstaticsuperswitchsynchronizedthisthrowthrowstransienttruetrytypeofvar voidvolatilewhilewithNote that not all reserved words do something within JavaScript currently Many of these reserved words are simply marked as unusable by the language so that future versions of JavaScript where these reserved words add behavior to JavaScript won t cause legacy applications of JavaScript programs to break or need to be changed because they used the keywords that now do something as identifiers before these keywords were able to do anything within JS ltag user id follow action button background color d important color ffffff important border color d important Clean Code StudioFollow Clean Code Clean Life Simplify	2021-08-02 12:52:08
海外TECH	DEV Community	What is Polymorphism? - Explaining Polymorphism to a Five Year Old	https://dev.to/ubahthebuilder/what-is-polymorphism-explaining-polymorphism-to-a-five-year-old-12dg	What is Polymorphism Explaining Polymorphism to a Five Year OldIn class oriented languages a class is simply an organized code which acts as a template or blueprint for creating objects A parent class can also be copied to create a child class You can think of the parent super and child sub classes in the same way you would think of the relationship between a real life parent and its child Additionally you could see it as the relationship between more abstract concepts or objects with more specializaed ones like a superset and subset When a child is born the characteristics of the parent are copied into the child In other words the child inherits behaviours from the parent This is known as class inheritance in class oriented languages Let s see some code illustrations Abstract Class An Aircraftclass Aircraft constructor wings engines wheels this wings wings this engines engines this wheels wheels Start the engine start console log turning on my this engines engines Stand stand console log standing on my this wheels tires Run on the tracks run console log moving down the runway on my this wheels tires Fly in the sky fly console log soaring the sky on my this wings wings A Child Class A Helicopterclass Helicopter extends Aircraft constructor engines wheels propellers super engines wheels call the super class constructor and pass in the engines and wheels parameter this propellers propellers propel console log spinning my this propellers propellers lift this stand this start this propel console log slowly climbing up thanks to my spinning propellers Another Child Class An Aeroplaneclass Aeroplane extends Aircraft constructor wings engines wheels passengers super engines wheels call the super class constructor and pass in the name parameter this passengers passengers start console log turning on my this engines balanced engines takeOff this stand this start this run this fly console log all of the this passengers passengers are screaming in delight We define the Aircraft class to assume two wings two engines three wheels a way to start it s engine stand run and also a way to fly But in real life cases you wouldn t ever manufacture just a generic “aircraft so it s really just an abstract concept at thispoint Hence then we define two specific kinds of aircrafts a helicopter and an aeroplane They each inherit some of the general characteristics of an aircraft but then each of them tailor the characteristics appropriately for themselves A helicopter needstwo propellers and has to propel while taking off and a aeroplane is assumed to need three engines because it s actually conveying lots of passengers Polymorphism implies the existence of a property or method across two or more classes in various levels of the inheritance chain It involves the referencing of a property or method from classes higher on the inheritance hierarchy In most class oriented languages including ES class this is achieved by calling the super keyword along with the name of the property of method you want to access from any method in the child class When you do this the JavaScript engine looks one step up into a parent class for that method Now let us consider one interesting implication of polymorphism in our class examples The start method was defined in both the Helicopter class and the Aeroplane class When you define a method of same name in both parent class and child class then you are said to have overridden that of the parent class Now if you observed well you would notice that the takeoff method made a reference to the start which as I said exists in both parent and child Which version of start do you think the JavaScript engine will use Is it the one in Aircraft or the one in AeroplaneThis brings us to one vital thing to always keep in mind about polymorphism When you make a reference to any property or method from a subclass the engine first checks to see if that method already exists in the current subsclass If it exists the engine uses that method If it doesn t exist the engine “looks up the next parent class for it and that goes on Now to answer the question the JavaScript engine will use the Aeroplanes version of start which will resolve to engines since a passenger plane has const plane new Aeroplane console log plane takeOff turning on my balanced engines Standing on my wheels Moving down the track on my tires Soaring the sky on my wings all the passengers are screaming in delight If we had instantiated the generic Aircraft class instead then its version of start would have been called instead const aircraft new Aircraft Nothing passed because we had set default parametersconsole log aircraft start turning on my two engines True to its name polymorphism allows you define and use properties and methods in many forms In our case The start method has two forms and the form which gets used depends on the class which gets instantiated Polymorphism is a very useful feature of Object oriented programming You can create one single interface which you can reuse in multiple subclasses You can save yourself time and write far less code When it comes to polymorphism and inheritance in JavaScript there is an important behaviour to understand the Prototype Mechanism This is how the engine traverses upwards looking for the existence of a property or method on the superclasses up until it reaches the prototype object What is the Prototype mechanism We ll leave that for our next episode of the Explain like I m series YOU MAY ALSO LIKE Habits To Avoid as a Web Developer Good Reasons To Start Blogging as a Software DeveloperP S If you like articles like this follow this blog to never miss an update If you are learning JavaScript you ll definitely want to check out my JavaScript Notes	2021-08-02 12:36:13
Apple	AppleInsider - Frontpage News	Will Smith's 'Emancipation' filming stopped over COVID spread	https://appleinsider.com/articles/21/08/02/will-smiths-emancipation-filming-stopped-over-covid-spread?utm_medium=rss	Will Smith x s x Emancipation x filming stopped over COVID spreadA mere two weeks into filming Apple TV thriller Emancipation crew will take a short hiatus to limit the spread of COVID The cast and crew of Emancipation has chosen to take a temporary break from filming after crew members tested positive for the coronavirus According to Deadline the cast and crew were only recently informed about the hiatus which will start on August and is expected to last five days Read more	2021-08-02 12:42:30
海外TECH	Engadget	Apple's 512GB M1 Mac Mini falls back to $799 at Amazon	https://www.engadget.com/apple-mac-mini-deal-123413396.html?src=rss	Apple x s GB M Mac Mini falls back to at AmazonIf you ve been eyeing Apple s latest Mac Mini as your next desktop now is the time to act You can currently get the GB model for at Amazon or off the normal price The deal brings the desktop down to just below the record low we saw in March and April It also means you re only paying more for double the storage of the base model Buy Mac Mini M GB at Amazon That should come in handy if you plan to take full advantage of the Mac Mini s M chip As we ve previouslynoted Apple s in house silicon is a powerhouse that makes quick work of most tasks be it browsing bloated websites or opening creative editing software Inside the desktop you ll find an core CPU with four performance cores and four efficiency cores and a core Neural Engine Unlike with the iMac you ll also need your own display and peripherals like a keyboard and mouse nbsp There are a few caveats however The Mac Mini s RAM and storage aren t upgradeable and the two rear Thunderbolt ports won t please those who need extra monitors and faster connectivity Apple also offers GB unified memory up to TB SSD storage and Gigabit Ethernet support at a cost In fact the true top of the line Mac Mini will set you back Saying that the specs available on this deal model should please most casual users Follow EngadgetDeals on Twitter for the latest tech deals and buying advice	2021-08-02 12:34:13
ニュース	BBC News - Home	Transgender athlete Hubbard out of Olympics	https://www.bbc.co.uk/sport/olympics/58054891	women	2021-08-02 12:16:19
ニュース	BBC News - Home	Streatham terror attack: Concern over 'extremist' knifeman before release	https://www.bbc.co.uk/news/uk-england-london-58057162	london	2021-08-02 12:29:02
ニュース	BBC News - Home	UK summons Iranian envoy over tanker attack	https://www.bbc.co.uk/news/world-middle-east-58059271	attackthe	2021-08-02 12:25:24
ニュース	BBC News - Home	Coronavirus: First people arriving into UK after rules relaxed for fully jabbed	https://www.bbc.co.uk/news/uk-58050538	amber	2021-08-02 12:04:30
ニュース	BBC News - Home	Blackpool: 'Hero' dies saving woman from sea	https://www.bbc.co.uk/news/uk-england-lancashire-58055884	early	2021-08-02 12:26:10
ニュース	BBC News - Home	I'm a Celebrity...Get Me Out Here! to return to Wales in 2021	https://www.bbc.co.uk/news/uk-wales-58053077	november	2021-08-02 12:46:12
ニュース	BBC News - Home	Campbell wins silver to earn first GB Olympic medal in women's weightlifting	https://www.bbc.co.uk/sport/olympics/58059401	silver	2021-08-02 12:47:43
ニュース	BBC News - Home	Tottenham face potential Larne tie in Europa Conference League	https://www.bbc.co.uk/sport/football/58057963	Tottenham face potential Larne tie in Europa Conference LeagueTottenham are drawn against Northern Irish team Larne or Portuguese side Pacos de Ferreira in the inaugural Europa Conference League play offs	2021-08-02 12:20:14
ニュース	BBC News - Home	Tokyo Olympics: Great Britain eventers win team gold and Tom McEwen claims individual silver	https://www.bbc.co.uk/sport/olympics/58047135	Tokyo Olympics Great Britain eventers win team gold and Tom McEwen claims individual silverGreat Britain won Olympic team eventing gold for the first time in years and Tom McEwen added a silver in the individual category	2021-08-02 12:49:51
ビジネス	ダイヤモンド・オンライン - 新着記事	サガミHD(9900)、名証上場30周年の記念株主優待の 実施を発表！ 2021年9月末に1000株以上の株主に、 通常の優待と加えて優待食事券1万8000円分を贈呈へ - 株主優待【新設・変更・廃止】最新ニュース	https://diamond.jp/articles/-/278518		2021-08-02 21:05:00
北海道	北海道新聞	「いつまで耐えれば…」と飲食店　福岡、再び酒類提供自粛に	https://www.hokkaido-np.co.jp/article/574118/	新型コロナウイルス	2021-08-02 21:03:32
北海道	北海道新聞	ホルモン値騒動乗り越え決勝進出　陸上のナミビア女子２選手	https://www.hokkaido-np.co.jp/article/574122/	決勝進出	2021-08-02 21:18:00
北海道	北海道新聞	十勝管内感染者、経路不明４割　７月以降、各世代に広がり	https://www.hokkaido-np.co.jp/article/574120/	十勝管内	2021-08-02 21:12:00
北海道	北海道新聞	函館・千代台陸上スクール、異なる年代交流刺激に　東京五輪・金井、城山選手輩出　間近で練習「成長段階イメージしやすく」	https://www.hokkaido-np.co.jp/article/571266/	東京五輪	2021-08-02 21:10:00
ビジネス	東洋経済オンライン	フォルクスワーゲン､中国電池メーカーと組む訳 統一規格のセルを共同開発､ドイツに工場新設 | 「財新」中国Biz＆Tech | 東洋経済オンライン	https://toyokeizai.net/articles/-/443434?utm_source=rss&utm_medium=http&utm_campaign=link_back	biztech	2021-08-02 21:30:00