投稿時間:2021-06-21 21:41:48 RSSフィード2021-06-21 21:00 分まとめ(47件)

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IT	ITmedia 総合記事一覧	[ITmedia News] SNS活用などデジタルマーケ特化の転職エージェントサービス　サイバーバズが提供	https://www.itmedia.co.jp/news/articles/2106/21/news171.html	itmedianewssns	2021-06-21 20:49:00
IT	ITmedia 総合記事一覧	[ITmedia News] 米Boston Dynamicsが韓国Hyundaiの傘下に　SBG、保有株式の8割を売却	https://www.itmedia.co.jp/news/articles/2106/21/news168.html	bostondynamics	2021-06-21 20:25:00
IT	ITmedia 総合記事一覧	[ITmedia News] 新入社員が先輩とランチに行くと無料に　アンカー、コミュニケーション活発化の新制度	https://www.itmedia.co.jp/news/articles/2106/21/news165.html	itmedia	2021-06-21 20:09:00
IT	ITmedia 総合記事一覧	[ITmedia News] 「業務スーパー」がAI導入、カートが商品をおすすめ　ソフトバンクが協力	https://www.itmedia.co.jp/news/articles/2106/21/news166.html	itmedia	2021-06-21 20:01:00
IT	MOONGIFT	TapeX - 画面録画 + 画面へドローイング	http://feedproxy.google.com/~r/moongift/~3/FgqWvS0kuck/	TapeX画面録画画面へドローイング最近はオンラインでプレゼンテーションすることが多くなり、あえて立ち上がったりせず、椅子に座ってパソコンの前でプレゼンができます。	2021-06-21 21:00:00
js	JavaScriptタグが付けられた新着投稿 - Qiita	JavaScript オブジェクト 未定義判定（途中の添字も含む）	https://qiita.com/Latiler/items/ba962cf52647fb13ae9b	単純に、オブジェクトが未定義、またはnullであるかは以下のように判定できます。	2021-06-21 20:57:49
js	JavaScriptタグが付けられた新着投稿 - Qiita	JavaScript 関数をキャッシュする(Reactとかで使えるかも)	https://qiita.com/standard-software/items/8620020617ccf0700fc9	JavaScript関数をキャッシュするReactとかで使えるかもReactでJSX内に、アロー関数式を書いたりしていると、毎度呼び出すときにレンダリングが走っちゃうんじゃないのかな、ということを回避するための仕組みの試作です。	2021-06-21 20:02:58
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	python3.9 での webスクリプトエラー	https://teratail.com/questions/345296?rss=all		2021-06-21 20:53:58
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	アセンブラのsmulhでなにをしているのか分からない	https://teratail.com/questions/345295?rss=all		2021-06-21 20:50:54
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	UITabBarのBorderの色を変更したい。	https://teratail.com/questions/345294?rss=all	UITabBarのBorderの色を変更したい。	2021-06-21 20:46:01
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	JavascriptのinnerHTMLが使えない	https://teratail.com/questions/345293?rss=all	JavascriptのinnerHTMLが使えないお世話になっております。	2021-06-21 20:44:35
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	CTF : stackの扱いについて教えて下さい	https://teratail.com/questions/345292?rss=all	CTFstackの扱いについて教えて下さいCTFの問題を解いています。	2021-06-21 20:35:42
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	django クエリセット　外部キーから親テーブルを取得	https://teratail.com/questions/345291?rss=all	djangoクエリセット外部キーから親テーブルを取得djangoのクエリセットで、外部キー指定した子テーブルから親テーブルに該当するもののみ取得したいです。	2021-06-21 20:32:22
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	PHPにjQueryの変数を渡す方法について	https://teratail.com/questions/345290?rss=all	以下のようなjQueryを記載しました。	2021-06-21 20:30:49
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	スライドショーができない　index.js表示ができない	https://teratail.com/questions/345289?rss=all	スライドショーができないindexjs表示ができないjqueryなしのスライドショーの表示ができません。	2021-06-21 20:29:28
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	info: The library 'package:flutter_svg/svg.dart' is legacy, and should not...の解決方法について	https://teratail.com/questions/345288?rss=all		2021-06-21 20:22:33
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	エラー[ varargs 中に __va_start intrinsic を許しました。 ]の解決方法が知りたい。	https://teratail.com/questions/345287?rss=all	エラーvarargs中にvastartintrinsicを許しました。	2021-06-21 20:21:57
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	AWS ELBで「https wwwなし」を「https wwwあり」URLに301リダイレクトする設定	https://teratail.com/questions/345286?rss=all	AWSELBで「httpswwwなし」を「httpswwwあり」URLにリダイレクトする設定【実現したいことAWSnbspELBで「」を「」にリダイレクトしたい【環境】AWS・サーバーECAmazonnbspLinux・ロードバランサーELBALB・ネームサーバーRoutegtnbspホストゾーンexamplecomのAレコードwwwexamplecomnbspnbspexamplecomを作成し、値にはELBのDNS名を設定・SSL証明書ACM【やったことACMAmazonnbspCertificatenbspManagerでSSL証明書を発行。	2021-06-21 20:19:26
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	pythonでの角速度からの角度算出方法を教えてください。	https://teratail.com/questions/345285?rss=all	pythonでの角速度からの角度算出方法を教えてください。	2021-06-21 20:18:58
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	GolangにてGogetを実行した後にコマンド実行できない	https://teratail.com/questions/345284?rss=all	GolangにてGogetを実行した後にコマンド実行できない前提・実現したいことGoのumlを、下記のインストール手順を行って際にGogetを実行すると、pkg配下にこちらのモジュールがダウンロードされてしまい。	2021-06-21 20:10:59
技術ブログ	Developers.IO	Lambda+Athenaでモンテカルロ法をサーバーレスで実行	https://dev.classmethod.jp/articles/serverless-montecalro/	athena	2021-06-21 11:01:58
海外TECH	Ars Technica	The best Amazon Prime Day 2021 deals under $50 we can find	https://arstechnica.com/?p=1774397	bargain	2021-06-21 11:05:08
海外TECH	DEV Community	Navbar in CSS: How to make 3D navigation in CSS	https://dev.to/kunaal438/navbar-in-css-how-to-make-3d-navigation-in-css-4g4d	Navbar in CSS How to make D navigation in CSSHello glad you are here I am kunaal and today we will see how to make an awesome D navigation system in CSS You can see demo below Demo Video TutorialI hope you understood everything If you have any doubt or you find any mistake that I made or you have any suggestion feel free to ask me in comment If you are interested in programming and want to know how I a yr old teen do coding make these design You can follow me on my Instagram I am also planning to post my game development stuff on Instagram My youtube Channel Instagram	2021-06-21 11:48:46
海外TECH	DEV Community	3 ways to send emails with only few lines of code and Gmail - Ruby - Part 2	https://dev.to/fralps/3-ways-to-send-emails-with-only-few-lines-of-code-and-gmail-ruby-part-2-23nc	ways to send emails with only few lines of code and Gmail Ruby Part We will see how to send a simple email with the help of three different programming languages Javascript Ruby and PythonBefore you start you need to create a Gmail account Do not forget to accept and allow the Less secure apps access in order use your scripts with your Gmail smtp connection I ll let you do this on your own you don t need a tutorial for this Ruby We are going to use the Mail gem gem install mailRequire it at the beginning of your send email rb require mail Declare Gmail account info Gmail account infooptions address smtp gmail com port gmail smtp port number domain gmail com user name youremail gmail com password yourpassword authentication plain Initialize Mail delivery method info Mail defaults do delivery method smtp optionsendSend email Mail deliver do to myfriend yopmail com from youremail gmail com subject Sending email using Ruby body Easy peasy lemon squeezy endHere the final code require mail Gmail account infooptions address smtp gmail com port domain gmail com user name youremail gmail com password yourpassword authentication plain Mail defaults do delivery method smtp optionsendMail deliver do to myfriend yopmail com from youremail gmail com subject Sending email using Ruby body Easy peasy lemon squeezy endputs Email sent The ease of Ruby Table of contentsJavascript Part Ruby Part Python Part coming next week	2021-06-21 11:48:01
海外TECH	DEV Community	Postgres indexes	https://dev.to/____marcell/postgres-indexes-4603	Postgres indexesIndexing is a technique to make queries run faster different indexes are suitable for different queries the main differences are between an exact match ranges and a full text in a nutshell if your query has a exact match or a range you should use the default method otherwise use gist most of the information from this post came from here have a read if you want to dig deeper How to create a indexCREATE INDEX UNIQUE INDEX NAME ON TABLE NAME USING METHOD COLUMN NAME ASC DESC NULL FIRST LAST e g CREATE INDEX idx title ON cards Remove an indexDROP INDEX CONCURRENTLY IF EXISTS index name CASCADE RESTRICT identify if a query uses an indexYou can use EXPLAIN to identify if a query is using an specific indexEXPLAIN SELECT FROM BOOKS WHERE BOOK MY BOOK if your query is using the index something like Index Scan will appear e g index is not being used QUERY PLAN Seq Scan on cards cost rows width index is being used QUERY PLAN Index Scan using my index on cards cost rows width Index Cond title text a text my index is the name of the index cards is the name of the table and title is the name of the column List all indexes in a tablethe following will list all indexes related to your tables you can also filter indexes for a specific table or fieldselect tablename indexname from pg indexes where schemaname public Index MethodsThe following are the most common index methods Generalized Inverted Indexes GIN Good for full text search maps multiple values to a column Generalized Serch Tree Gist Allows for balanced btree good for full text search used for geometric data types poligons points etc are usefull for operations besides comparison and range Hash IndexIt s trash not worth the complexity and work to manage it coudn t find any common example that couldn t be done with the other methods in an easier way with better results you can try to convince me otherwise in the comments if you want btree indexDoesn t work with like queries works pretty well with caching it s the default index if you don t pass the method option when creating the index it will be created with this method These are all the most common indexes now let s talk about some techniques when creating indexes Expression Indexesexpression indexes are usefull when you need to convert the data before searching it CREATE INDEX USERS LOWER EMAIL ON USERS LOWER EMAIL the above index will be used in searches likeWHERE lower email lt lowercased email gt CREATE INDEX articles day ON articles date published at the above can will be used forWHERE date articles published at date Partial Indexespartial index is a index applied to just part of the data the following is a usefull partial indexCREATE INDEX articles flagged created at index ON articles created at WHERE flagged IS TRUE Unique Indexescreate unique lt index name gt Improves query performance if you try to create a uniq index in a column that has rows with the same value the index creation will fail if you try to insert values that already exist in a column with a uniq index a error occursERROR duplicate key value violates unique constraint uniq index DETAIL Key title title already exists When it makes sense to use indexes The general rule is the bigger your table is the betterindex only makes sense when the cost of reading data from the index hitting the disc and then reading data from the table is lower than a table scan so in general big tables are better for indexes because you don t need to scan the whole table and the cost of reading two different values in two different tables isn t very high comparatively with the full table scan when in doubt just create a test case and test it or better yet always test it first Who decides when to use an index or not The query planner decides to use an index or not just because an index exists and your querymatches the initial criteria for using that index doesn t mean that the index will be used the query planner decides when to use the index or not based on a multitude of factors the biggestone is how much data the query will hit if it s a lot it s more likely that the query planner will use the indexindexes make more sense the bigger the table is You need a lot of data to test indexes properly A good general rule is to test as close to production as you can the query planer might decide not to use your index if you test it locally in small sets of data which will make you waste a lot of time benchmarking with non sensical data trust me I ve learned the hard way so you should create a lot of data to test your indexes the general rule is to test as close to production as possible creating indexes locks your dbIf it s a big table your db can be locked for hours use create index concurrently to mitigate the problem Reindexingafter sometime your index will not be optimized anymore that s when you need to reindex ita good reindex technique is to create another index with a different name and then droping the old one and that s pretty much all the basic information that you need to start creating indexes go create some indexes and make your queries run faster	2021-06-21 11:32:10
海外TECH	DEV Community	How to extend an Ant Design component	https://dev.to/jurajuki/how-to-extend-an-ant-design-component-1mgb	How to extend an Ant Design component IntroductionDevelopers using Javascript frameworks libraries such as React Vue or Angular often use a component library Those provide completed components tied with plenty of functionalities and customisable design In this post we will learn about such a library and how to provide even more desired behaviours functionalities and options to its components This is called component extension and it makes components even more reusable and easier to use Note This post will be based on React Typescript and AntDesign The what and the whyAnt Design AntD for short is the protagonist in this story It is an extensive component library primarily made for React It has versions for Vue and Angular too AntD offers plenty of components such as forms inputs menus modals loaders notifications and much much more We have been working with AntD for a while now and we have been greatly thankful for it As your applications grows you start to use more and more components These components tend to have very similarly written props and they start to stack up Or in a completely different scenario the component s design needs a change or its functionality needs more options We developers try to use DRY principle as much as we can Therefore the component extension is born You may be asking yourself when is a good time to extend a component The correct answer is whenever you start to use identical component on multiple places This way you have a full control of it in the project How to do itIt is actually pretty simple Step one is to create a new tsx component and name it accordingly to one s needs Then we must import the actual component we want to extend and modify it to fit our needs DatePicker extend exampleWe create a component called DatePickerLocalised tsx the name is totally up to you and import the AntD s DatePicker inside with the following import import DatePicker as AntdDatePicker DatePickerProps from antd This imports the DatePicker component and its interface for the props Now all we have to do is make a functional component export const DatePickerLocalised FunctionComponent lt DatePickerProps gt props gt return lt AntdDatePicker props gt This is now a component which is an exact copy of the one from the component library AntD Let s extend it by adding a locale date format What goes in the format prop can be seen in the AntD documentation for the DatePicker component Since I m from Croatia I m going to use Croatian formats The whole component now looks like this import DatePicker as AntdDatePicker DatePickerProps from antd import FunctionComponent from react export const defaultDateFormats DD MM YYYY DD MM YYYY DDMMYYYY DDMMYY export const DatePickerLocalised FunctionComponent lt DatePickerProps gt props gt return lt AntdDatePicker format defaultDateFormats props gt Now we can use this “localised date picker throughout our whole app No longer do we have to worry about the locale format being wrong Amazing But what if we want to extend it even more by adding custom props It is also quite simple We have to create a new type with its DatePickerProps and add our own interface to the extension All that remains is passing it down to the newly created component I have added fullWidth custom prop to the new interface ExtendedDatePickerProps and added a style prop in the AntdDatePicker Take a look at the following snippet import DatePicker as AntdDatePicker DatePickerProps from antd import FunctionComponent from react export interface ExtendedDatePickerProps fullWidth boolean export type DatePickerLocalisedProps DatePickerProps amp ExtendedDatePickerProps export const defaultDateFormats DD MM YYYY DD MM YYYY DDMMYYYY DDMMYY export const DatePickerLocalised FunctionComponent lt DatePickerLocalisedProps gt props gt return lt AntdDatePicker style props fullWidth width undefined format defaultDateFormats props gt Now you can use the component with the custom prop anywhere in the application like this lt DatePickerLocalised fullWidth true onChange newDate gt setDateState newDate gt Note the destructuring of props props always goes at the bottom of the extended component This is because of a need of overriding E g the format prop which is set inside of the extend can be also passed when using the component It will override the default created behaviour You can add anything you desire in your extends From enums to creating validator functions The components can be extended as far the eye can see ConclusionYou can now imagine the possibility of different reusable components you can create with the extension It is really useful to customise the components and make them suitable for your needs We have reached the end thank you for reading I hope you have learned something new in this post Do you have something to add do you have your own way of extending components Tell me more in the comments Check out some of my other content If you are new to the Hooks world check out this articleIf you have wondered about Top React hook libraries Then this is a perfect post for you	2021-06-21 11:00:33
Apple	AppleInsider - Frontpage News	'Ted Lasso' star drops new season 2 trailer on Twitter	https://appleinsider.com/articles/21/06/21/ted-lasso-star-drops-new-season-2-trailer-on-twitter?utm_medium=rss	x Ted Lasso x star drops new season trailer on TwitterWriter actor Brett Goldstein has tweeted a new trailer for the forthcoming second season of hit Apple TV comedy Ted Lasso An initial trailer for Ted Lasso season two was unveiled by Tim Cook during Apple s Spring Loaded event Now series writer Brett Goldstein who also plays Roy Kent in the show has tweeted a new one July rd The Greyhounds are back tedlasso pic twitter com RCPfojiuーBrett Goldstein brettgoldstein June Read more	2021-06-21 11:59:40
Apple	AppleInsider - Frontpage News	Facebook rolls out podcasts and Live Audio Rooms to iOS app	https://appleinsider.com/articles/21/06/21/facebook-rolls-out-podcasts-and-live-audio-rooms-to-ios-app?utm_medium=rss	Facebook rolls out podcasts and Live Audio Rooms to iOS appFacebook has started to ship its Clubhouse inspired Live Audio Rooms in the United States as well as a selection of its own exclusive podcasts as the social network capitalizes on audio based trends Facebook s Live Audio RoomsThe new features were outlined by Facebook in April with a launch set for sometime in the summer On Monday the first sections of its audio changes started to surface on devices Read more	2021-06-21 11:54:10
Apple	AppleInsider - Frontpage News	Exclusive: Shortcuts automation interview with Matthew Cassinelli	https://appleinsider.com/articles/21/06/21/exclusive-shortcuts-automation-interview-with-matthew-cassinelli?utm_medium=rss	Exclusive Shortcuts automation interview with Matthew CassinelliOn a special episode of the AppleInsider Podcast we interview Matthew Cassinelli who worked on Siri Shortcuts after his Workflow app was acquired by Apple and is now an independent creator teaching others how to create and use Shortcuts across Apple devices Matthew Cassinelli has a passion for automation on iPhone iPad and Mac Early on he joined the popular Workflow app team which brought multi step automations to the iPhone Workflow was then acquired by Apple and he stayed on the team as it became Shortcuts Read more	2021-06-21 11:41:23
海外TECH	Engadget	Hyundai now owns robot dog maker Boston Dynamics	https://www.engadget.com/hyundai-boston-dynamics-acquisition-114044490.html?src=rss_b2c	company	2021-06-21 11:40:44
海外TECH	Engadget	The best Apple deals we've found on Prime Day so far	https://www.engadget.com/amazon-prime-day-2021-best-apple-deals-airpods-ipads-macbooks-113233519.html?src=rss_b2c	airpods	2021-06-21 11:32:33
海外TECH	Engadget	The Morning After: Amazon Prime Day 2021 kicks off	https://www.engadget.com/the-morning-after-amazon-prime-day-2021-kicks-off-111528051.html?src=rss_b2c	The Morning After Amazon Prime Day kicks offToday s headlines NASA is struggling with a computer glitch on the Hubble Space Telescope Amazon s Prime Day kicks off with discounts on the usual suspects and YouTube s iOS app is finally getting picture in picture	2021-06-21 11:15:28
海外TECH	Engadget	The best Amazon Prime Day tech deals you can get right now	https://www.engadget.com/amazon-prime-day-2021-best-deals-110412981.html?src=rss_b2c	headphones	2021-06-21 11:04:12
海外TECH	Engadget	Facebook launches its Clubhouse clone and podcast streaming	https://www.engadget.com/facebook-launches-audio-rooms-and-podcasts-110028076.html?src=rss_b2c	audio	2021-06-21 11:00:28
海外TECH	CodeProject Latest Articles	How to Use FFmpeg Filters to Jazz Up Your Audio and Video Files	https://www.codeproject.com/Tips/5303741/How-to-Use-FFmpeg-Filters-to-Jazz-Up-Your-Audio-an	How to Use FFmpeg Filters to Jazz Up Your Audio and Video FilesFFmpeg filters can cut copy convert mix rotate flip resize crop combine compose blur sharpen smoothen side by side split PIP inset fade in out…almost anything you want to do with video files and more	2021-06-21 11:59:00
Linux	OMG! Ubuntu!	Slimbook Executive: Lightweight Linux Ultrabook with Top-Tier Screen	http://feedproxy.google.com/~r/d0od/~3/Nv7BCi16NRk/slimbook-executive-linux-laptop	Slimbook Executive Lightweight Linux Ultrabook with Top Tier ScreenHaving gifted gamers and AMD enthusiasts the aptly named Slimbook Titan earlier in the year Spanish hardware company Slimbook has turned its attention to professionals with the launch of a lightweight ultrabook that s big on This post Slimbook Executive Lightweight Linux Ultrabook with Top Tier Screen is from OMG Ubuntu Do not reproduce elsewhere without permission	2021-06-21 11:01:00
海外TECH	WIRED	Prime Day 2021: The 56 Absolute Best Deals (Updated)	https://www.wired.com/story/best-prime-day-deals-2021	absolute	2021-06-21 11:45:00
ニュース	BBC News - Home	Covid in Scotland: Nicola Sturgeon defends Manchester travel ban	https://www.bbc.co.uk/news/uk-scotland-57551236	mayor	2021-06-21 11:26:14
ニュース	BBC News - Home	Contaminated blood inquiry: The school where dozens of pupils died	https://www.bbc.co.uk/news/uk-57547366	decades	2021-06-21 11:29:16
ニュース	BBC News - Home	Social care: Ministers urged to 'act now' on funding reform	https://www.bbc.co.uk/news/uk-politics-57552287	england	2021-06-21 11:31:12
ニュース	BBC News - Home	Covid-19: Matt Hancock hopes to scrap isolation for double-jabbed contacts	https://www.bbc.co.uk/news/uk-57552793	health	2021-06-21 11:54:49
ニュース	BBC News - Home	What are the rules for pubs, restaurants, festivals and gigs?	https://www.bbc.co.uk/news/business-52977388	festivals	2021-06-21 11:14:29
ニュース	BBC News - Home	Covid map: Coronavirus cases, deaths, vaccinations by country	https://www.bbc.co.uk/news/world-51235105	countrykey	2021-06-21 11:03:39
ビジネス	不景気.com	金沢の医薬品卸「寿薬品」に破産開始決定、負債9億円 - 不景気.com	https://www.fukeiki.com/2021/06/kotobuki-medicine.html	株式会社	2021-06-21 11:01:41
LifeHuck	ライフハッカー［日本版］	Amazonプライムデーで自宅をジム化！ 宅トレグッズをお得に揃えるなら今	https://www.lifehacker.jp/2021/06/237191amazon-primeday-homeworkout.html	amazon	2021-06-21 21:00:00
LifeHuck	ライフハッカー［日本版］	【Amazonプライムデー初日！】アイリスオーヤマの4～5人用ドラム式洗濯機が9万円台、衣類乾燥除湿機が7,000円台など	https://www.lifehacker.jp/2021/06/amazon-primeday-2021-timesale-0621-5.html	amazon	2021-06-21 20:15:00
北海道	北海道新聞	大規模接種会場、各地で開設　廃棄防止や職種限定、工夫こらし	https://www.hokkaido-np.co.jp/article/558097/	新型コロナウイルス	2021-06-21 20:01:00