投稿時間:2022-03-14 22:30:25 RSSフィード2022-03-14 22:00 分まとめ(41件)

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IT	ITmedia 総合記事一覧	[ITmedia News] 「スマホの単体購入を断られた」――量販店でトラブル多発か　消費者からの通報を総務省が公開	https://www.itmedia.co.jp/news/articles/2203/14/news168.html	itmedia	2022-03-14 21:25:00
IT	ITmedia 総合記事一覧	[ITmedia News] ソニーストアが「PS5」抽選販売、16日から　「グランツーリスモ7」セットも	https://www.itmedia.co.jp/news/articles/2203/14/news166.html	itmedia	2022-03-14 21:03:00
TECH	Techable（テッカブル）	純銅鋳物製造における熟練者の“暗黙知”を学習したAI、検証で実用化に期待できる結果を残す	https://techable.jp/archives/175217	三菱総研dcs株式会社	2022-03-14 12:00:13
python	Pythonタグが付けられた新着投稿 - Qiita	【Python3】pytestで例外を検出する方法	https://qiita.com/Jazuma/items/cb8dcd9ff01ed1c2d1f2	【Python】pytestで例外を検出する方法メモ書きです環境pythonpytest実装例pytestモジュールをimportimportpytestdeftargetintifintgtより大きい数値の場合例外を送出raiseValueError不正な値ですreturnintdeftesttargettestintValueErrorを検知withpytestraisesValueErrorasetargettestintエラーメッセージを検証assertstrevalue不正な値ですwithpytestraises例外クラスで例外を検知します。	2022-03-14 21:03:57
Ruby	Rubyタグが付けられた新着投稿 - Qiita	devise でグループ登録機能を追加してみた	https://qiita.com/murara_ra/items/b6749db856a80dd5f202	エラー内容MysqlErrorKeycolumnemaildoesntexistintablemigratexxxxxxxxdevisecreategroupsrbinchangeエラー文にはxxxxxxxxdevisecreategroupsrbの行目を変更しなさいと書かれている。	2022-03-14 21:45:51
AWS	AWSタグが付けられた新着投稿 - Qiita	EC2 の Retirement 対応でインスタンスの停止・起動ではなく再起動をしたらハマった	https://qiita.com/tsubasaogawa/items/34b51f2dfb71a716c7e4	ECを動かしているハードウェアの問題で、期日までにインスタンスを停止→起動してほしいとのこと。	2022-03-14 21:54:05
Ruby	Railsタグが付けられた新着投稿 - Qiita	devise でグループ登録機能を追加してみた	https://qiita.com/murara_ra/items/b6749db856a80dd5f202	エラー内容MysqlErrorKeycolumnemaildoesntexistintablemigratexxxxxxxxdevisecreategroupsrbinchangeエラー文にはxxxxxxxxdevisecreategroupsrbの行目を変更しなさいと書かれている。	2022-03-14 21:45:51
海外TECH	Ars Technica	Google “hijacked millions of customers and orders” from restaurants, lawsuit says	https://arstechnica.com/?p=1840662	button	2022-03-14 12:47:11
海外TECH	MakeUseOf	Save 20 Percent on Kokoon Nightbuds or a Relax Headset	https://www.makeuseof.com/kokoon-nightbuds/	awareness	2022-03-14 13:00:13
海外TECH	MakeUseOf	The Best Phone Tripods for Capturing the Perfect Moment	https://www.makeuseof.com/tag/whats-best-phone-tripod/	tripod	2022-03-14 12:58:59
海外TECH	MakeUseOf	Are RAM Drives Faster Than SSDs? 5 Things You Must Know	https://www.makeuseof.com/tag/ram-drives-faster-ssds-5-things-must-know/	drives	2022-03-14 12:37:03
海外TECH	MakeUseOf	How to Add Response Validation to Google Forms	https://www.makeuseof.com/add-response-validation-google-forms/	forms	2022-03-14 12:30:13
海外TECH	DEV Community	Streaming March 14, 2022	https://dev.to/tspannhw/streaming-march-14-2022-gfn	march	2022-03-14 12:39:59
海外TECH	DEV Community	Demystifying how 'this' works in Javascript	https://dev.to/smpnjn/demystifying-how-this-works-in-javascript-1i7b	Demystifying how x this x works in JavascriptIt s something used all the time in Javascript but often what it refers to is a mystery In Javascript this works quite differently to other programming languages and it works differently depending on if you are using use strict mode or not If you find it hard you aren t alone Let s look at exactly how this works and remove any confusion as to what it means in various contexts What is this in Javascriptthis is a keyword in Javascript which refers to a property or set of properties within a certain context The context we use this in alters its properties In the global context this refers to the global object which in the browser is window but is globalThis in Node JS and other implementations of Javascript console log this The same as console log window Outside of any functions or code this is always the case However in different places this means different things This in Functions in JavascriptIn a function this still refers to the global object If we reference this in a function it will by default reference the window or globalThis object console log this The same as console log window function myFunction console log this The same as console log window myFunction In strict mode however this inside a function is undefined use strict console log this The same as console log window function myFunction console log this This is undefined myFunction Solving with call This is a little confusing at first but the reason for this is because we need to add a this object onto myFunction Javascript in strict mode won t default it to the global object To do that we have to use call In the example below I ve turned myObject into our this variable use strict console log this The same as console log window let myObject firstName John lastName Doe age function myFunction console log this firstName myFunction call myObject this firstName is defined as John so it will console log JohnmyFunction this firstName will be undefined and this will throw an error call runs myFunction and attaches myObject to the this keyword If we don t use call and simply run myFunction then the function will return an error as this firstName will be undefined You are also able to call a function with an empty this which you can then append data to inside your function This gives us a fresh space to define variables on our this object rather than being polluted with data from the global this object use strict console log this The same as console log window function myFunction this firstName John console log this firstName This will be John myFunction call Different behaviour in strict modeAs you can see the behaviour is quite different depending on if we re using strict mode or not so it s important you do some tests before changing your code between the two modes Call and ApplyYou may sometimes see call being used interchangeably with a function called apply Both of these functions are very similar in that they both invoke a function with a specified this context The only difference is apply takes an array if a function has arguments while call takes each argument one by one For example use strict let otherNumbers a b function multiplyNumbers x y z return this a this b x y z Both will return the same result the only difference being that apply uses an array for arguments multiplyNumbers call otherNumbers multiplyNumbers apply otherNumbers Simplifying this process using bind Another way to achieve similar behaviour to call is to use bind Similar to call bind changes the this value for a function only it does so permanently That means you don t have to constantly use bind you only use it once Here is an example where we bind our object permanently to our function thus updating this permanently we just have to define it as a new function In the below example we define a new function called boundFunction which is our myFunction with myObject bound to it permanently As such when we call console log it will show John This is different than call which needs to be used each time we use a function use strict console log this The same as console log window let myObject firstName John lastName Doe age function myFunction console log this firstName let boundFunction myFunction bind myObject this will bind this to myObject permanently boundFunction since we used bind this will now be set to myObject every time we call boundFunction so it will return John Arrow Notation Functions and thisOne of the key features to the arrow notation functions in Javascript is they hold no this context That means that they inherit this from their parent For example let s say we are in strict mode and define both an arrow function and a normal style function For the arrow function this will be inherited but for the other function this will remain undefined use strict console log this The same as console log window function myFunction console log this name This will be John let myArrowFunction gt console log this name This will be John let myNormalFunction function console log this name This will throw an error since this is undefined myArrowFunction myNormalFunction myFunction call name John Constructor Functions and thisAnother interesting thing about this is that when used in a constructor function that being a function using the new keyword the return of the constructor function essentially overwrites this So for example if we run the following although we set this name to John the value returned for name is Jack let functionA function this name John let functionB function this name John return name Jack let runFunctionA new functionA console log runFunctionA name Returns John let runFunctionB new functionB console log runFunctionB name Returns Jack This in an Object ContextIn an object context using this refers to the object For example suppose we run a function within an object called obj which refers to this aProperty this in this case refers to obj let obj aProperty runFunction function console log this aProperty Refers to obj runFunction Will console log since this refers to objThis is also true if you use the get set notation use strict let obj aProperty runFunction function console log this aProperty Refers to set updateProp division this aProperty this aProperty division this aProperty refers to console log this aProperty obj updateProp Will divide aProperty by and console log the result i e Using this with Event ListenersAnother quirk of Javascript s this is that when using an event listener this refers to the HTML element the event was added to In the below example we add a click event to an HTML tag with ID hello world document getElementById hello world addEventListener click function e console log this If we then click on our hello world HTML element we will see this in our console log lt div id hello world gt lt div gt Using this with ClassesIt s worth noting in this section that classes in Javascript are simply functions under the hood That means a lot of the functionality we ve seen with functions stands true for classes By default a class will have this set to the class instance itself In the below example we can see this in action both runClass name and runClass whatsMyName return John class myClass whatsMyName return this name get name return John const runClass new myClass console log runClass name Returns John console log runClass whatsMyName Returns John The only exception to this is that static items are not added to this So if we define a function with the keyword static in front of it it will not be on this class myClass getMyAge return this whatsMyAge static whatsMyAge return this age get name return John get age return const runClass new myClass console log runClass whatsMyAge Throws an error since runClass whatsMyAge is undefinedconsole log runClass getMyAge Throws an error since this whatsMyAge is undefinedIt s worth noting that classes by default are always in strict mode so this will behave in the same way it does for strict functions by default in classes ConclusionIn Javascript this can mean various things In this article we ve covered what it means in different contexts functions classes and objects We have covered how to use bind call and apply to add a different this context to your functions We ve also covered how to use this in strict mode versus non strict mode After this I hope this is slightly demystified	2022-03-14 12:17:06
海外TECH	DEV Community	Terminal komandalar | Part 4	https://dev.to/wahidd/terminal-komandalar-part-4-2iaf	Terminal komandalar Part aliasBu komanda takroriy ishlatiladigan komandalar uchun yangi nickname taxallus beradi alias datedir mkdir date d m Y ushbu komanda bugungi sana nomi bilan papka yaratadigan uzuuuuun komandaga qisqa nom beradi Endi datedir deyish orqali bugungi sana nomi bilan papka yaratsa bo ladi alias komandasi bitta terminal session uchun ishlaydi holos	2022-03-14 12:01:24
Apple	AppleInsider - Frontpage News	Lock Keypad, ecobee SmartCamera, & Chipolo Card Spot review on HomeKit Insider	https://appleinsider.com/articles/22/03/14/lock-keypad-ecobee-smartcamera-chipolo-card-spot-review-on-homekit-insider?utm_medium=rss	Lock Keypad ecobee SmartCamera amp Chipolo Card Spot review on HomeKit InsiderOn the latest episode of the HomeKit Insider Podcast your hosts discuss the new Level Lock keypad the ecobee SmartCamera and review the Chipolo Card Spot before discussing the Apple Event HomeKit InsiderIn the shadow of the Apple Event Level Lock introduced the latest addition to its lineup Its new dedicated keypad offers a phone free way of accessing your home when paired with a Level Lock Bolt or Level Lock Touch smart lock Read more	2022-03-14 12:57:22
海外TECH	Engadget	Tile Bluetooth trackers are up to 20 percent off on Amazon right now	https://www.engadget.com/tile-bluetooth-trackers-are-up-to-20-percent-off-on-amazon-right-now-124436588.html?src=rss	Tile Bluetooth trackers are up to percent off on Amazon right nowBluetooth trackers are an affordable way to digitally keep track of your physical belongings and now you can snag a number of Tile gadgets for less Amazon has select packs of the trackers for up to percent off right now The Tile Mate Essentials pack is included in this sale and it has two Tile Mates one Slim and one Sticker tracker all for a record low of You can also get a pack of two Tile Stickers for or percent off or just one Tile Mate for or percent off its norma rate Buy Tile Mate Essentials pack at Amazon Buy Tile Stickers pack at Amazon Buy Tile Mate at Amazon These little devices let you keep track of things like your wallet keys handbag water bottle and more from your phone They connect via Bluetooth and you can check their last known location using the Tile network and the companion mobile app available for both Android and iOS When within Bluetooth range you can make the Tile trackers ring so you can more easily find your stuff and you can also add your contact information to the Tile so those who find your lost things can more easily contact you All of the Tiles on sale right now have the same basic features ーIP rated designs three year non replaceable batteries and a Bluetooth range of up to feet Their different sizes and methods of attachment will make each of them better for specific objects The standard Tile Mate can easily attach to a keychain while the Tile Slim is designed to comfortably fit into a wallet s card slot Tile Stickers have an adhesive on one side so you can attach them to things like a TV remote video game controllers and more Follow EngadgetDeals on Twitter for the latest tech deals and buying advice	2022-03-14 12:44:36
海外TECH	The Apache Software Foundation Blog	The Apache Weekly News Round-up: week ending 11 March 2022	https://blogs.apache.org/foundation/entry/the-apache-weekly-news-round17	The Apache Weekly News Round up week ending March Hello everyone let s review the Apache community s activities from over the past week ASF Board nbsp management and oversight of the business affairs of the corporation in accordance with the Foundation s bylaws nbsp Next Board Meeting March Running Board calendar and minutes are available ASF Infrastructure nbsp our distributed team on three continents keeps the ASF s infrastructure running around the clock nbsp M weekly checks yield uptime at Performance checks across different service components spread over more than machines in data centers around the world View the nbsp ASF s Infrastructure Uptime site to see the most recent averages Apache Code Snapshot nbsp Over the past week Apache Committers changed lines of code over commits Top contributors in order are Jean Baptiste Onofré Otavio R Piske Gary Gregory Andrea Cosentino and Andi Huber nbsp nbsp Apache Project Announcements nbsp the latest updates by category Big Data nbsp CVE Apache Spark Key Negotiation VulnerabilityContent nbsp Apache Any released nbsp nbsp CVE An XML external entity XXE injection vulnerability exists in the RDFa XSLTStylesheet extractor nbsp Apache Jackrabbit released nbsp Cloud Computing nbsp Apache CloudStack LTS released nbsp Database nbsp nbsp Apache ZooKeeper released nbsp Apache Geode released IDE nbsp Apache NetBeans released IoT nbsp Apache IoTDB released Libraries nbsp nbsp Apache Olingo released Mail nbsp Apache James released Orchestration nbsp Apache Hop released Programming Languages nbsp Apache Groovy and released Did You Know Did you know that the next Apache Druid MeetUp will be held both online and in person in Tel Aviv on March nbsp Did you know that Apache ShardingSphere SQL Parse Format Function allows you to easily understand and automatically format complicated SQL statements Did you know that the next Apache Airflow Community Meetup will be held on March Sign up to learn about Data Migration Pipeline with Apache Airflow Apache Community Notices nbsp Apache in nbsp By The Digits nbsp nbsp Video highlights nbsp nbsp Watch quot Trillions and Trillions Served quot the documentary on the ASF nbsp full feature nbsp min quot Apache Everywhere quot min quot Why Apache quot min nbsp “Apache Innovation min nbsp nbsp ASF Annual Report FY nbsp Press release nbsp and nbsp Report nbsp PDF nbsp The Apache Way to nbsp Sustainable Open Source Success nbsp nbsp nbsp Foundation Reports and Statements nbsp Presentations from s ApacheCon Asia and ApacheCon Home are available on the nbsp ASF YouTube channel nbsp quot Success at Apache quot focuses on the people and processes behind why the ASF quot just works quot nbsp nbsp Follow the ASF on social media nbsp TheASF on Twitter nbsp and nbsp The ASF page LinkedIn nbsp nbsp Follow the nbsp Apache Community on Facebook nbsp and nbsp Twitter nbsp nbsp Are your software solutions Powered by Apache nbsp Download amp use our quot Powered By quot logos Stay updated about The ASFFor real time updates sign up for Apache related news by sending mail to announce subscribe apache org and follow TheASF on Twitter For a broader spectrum from the Apache community Planet Apache provides an aggregate of Project activities as well as the personal blogs and tweets of select ASF Committers	2022-03-14 12:47:16
海外TECH	CodeProject Latest Articles	Robust C++: P and V Considered Harmful	https://www.codeproject.com/Articles/5246597/Robust-Cplusplus-P-and-V-Considered-Harmful	safety	2022-03-14 12:44:00
海外TECH	WIRED	TV Struggles to Put Silicon Valley on the Screen	https://www.wired.com/story/wecrashed-tv-silicon-valley	hollywood	2022-03-14 13:00:00
海外TECH	WIRED	The Best Video Doorbell Cameras	https://www.wired.com/gallery/best-video-doorbells	front	2022-03-14 13:00:00
金融	金融庁ホームページ	「違法な金融業者に関する情報について」を更新しました。	https://www.fsa.go.jp/ordinary/chuui/index.html	Detail Nothing	2022-03-14 13:30:00
金融	金融庁ホームページ	暗号資産交換業者に対し、ウクライナをめぐる現下の国際情勢を踏まえた対応について要請しました。	https://www.fsa.go.jp/news/r3/sonota/20220314.html	資産	2022-03-14 12:50:00
ニュース	BBC News - Home	Ukraine: Protesters occupy Russian oligarch's London mansion	https://www.bbc.co.uk/news/uk-england-london-60736583?at_medium=RSS&at_campaign=KARANGA	deripaska	2022-03-14 12:52:07
ニュース	BBC News - Home	Mass graves in Ukraine: Battered cities are digging makeshift burial sites	https://www.bbc.co.uk/news/world-europe-60729206?at_medium=RSS&at_campaign=KARANGA	battered	2022-03-14 12:25:35
ニュース	BBC News - Home	Ukraine crisis: US warns China against helping Russia	https://www.bbc.co.uk/news/world-asia-china-60732486?at_medium=RSS&at_campaign=KARANGA	military	2022-03-14 12:50:30
ニュース	BBC News - Home	Petrol prices set to ease after hitting record highs	https://www.bbc.co.uk/news/business-60733390?at_medium=RSS&at_campaign=KARANGA	highsfuel	2022-03-14 12:08:22
ニュース	BBC News - Home	Cost of living: Food boss says prices could rise by up to 15%	https://www.bbc.co.uk/news/business-60734384?at_medium=RSS&at_campaign=KARANGA	ukraine	2022-03-14 12:03:43
ニュース	BBC News - Home	Inflation: Sports bras in, doughnuts out of cost of living measure	https://www.bbc.co.uk/news/business-60734386?at_medium=RSS&at_campaign=KARANGA	yorkshire	2022-03-14 12:10:53
ニュース	BBC News - Home	Songwriter 'shocked' that Ed Sheeran 'copied' his song	https://www.bbc.co.uk/news/entertainment-arts-60737066?at_medium=RSS&at_campaign=KARANGA	chokri	2022-03-14 12:25:16
ニュース	BBC News - Home	How many refugees have fled Ukraine and where are they going?	https://www.bbc.co.uk/news/world-60555472?at_medium=RSS&at_campaign=KARANGA	ukraine	2022-03-14 12:05:11
北海道	北海道新聞	道南中心に１５日暴風雨警戒　浸水やなだれに注意を	https://www.hokkaido-np.co.jp/article/656768/	道南	2022-03-14 21:17:56
北海道	北海道新聞	まん延解除にらみ道、独自対策検討　引っ越し分散など	https://www.hokkaido-np.co.jp/article/656776/	引っ越し	2022-03-14 21:17:00
北海道	北海道新聞	障害者配慮、職員研修４割どまり　都道府県スポーツ施設調査	https://www.hokkaido-np.co.jp/article/656778/	都道府県	2022-03-14 21:18:00
北海道	北海道新聞	道信金寿都支店内に共同窓口　道銀が全国初、８月から	https://www.hokkaido-np.co.jp/article/656758/	北海道銀行	2022-03-14 21:14:41
北海道	北海道新聞	「雪室ばれいしょ」甘み増す天然冷蔵　浦幌町農協、取り組み２０年	https://www.hokkaido-np.co.jp/article/656766/	取り組み	2022-03-14 21:13:05
北海道	北海道新聞	まん延防止　あと１週間　札幌市の４指標改善傾向　感染３割超１０代以下　懸念	https://www.hokkaido-np.co.jp/article/656774/	新型コロナウイルス	2022-03-14 21:12:00
北海道	北海道新聞	福岡国際マラソンを継承　１２月に新大会開催へ	https://www.hokkaido-np.co.jp/article/656773/	日本陸連	2022-03-14 21:11:00
ビジネス	東洋経済オンライン	日本人の生活も圧迫するウクライナ侵攻の別側面 調達難の値上げとともに第3次石油危機の可能性も | ウクライナ侵攻､危機の本質 | 東洋経済オンライン	https://toyokeizai.net/articles/-/538937?utm_source=rss&utm_medium=http&utm_campaign=link_back	東洋経済オンライン	2022-03-14 21:40:00
IT	週刊アスキー	ハーゲンダッツ新作は伝統的な洋菓子「ナポレオンパイ」「レーズンバターサンド」を表現	https://weekly.ascii.jp/elem/000/004/086/4086042/	表現	2022-03-14 21:30:00
海外TECH	reddit	絵描いたよ	https://www.reddit.com/r/lowlevelaware/comments/tdvxa5/絵描いたよ/	wlevelawarelinkcomments	2022-03-14 12:03:38