投稿時間:2021-07-04 18:26:25 RSSフィード2021-07-04 18:00 分まとめ(31件)

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js	JavaScriptタグが付けられた新着投稿 - Qiita	《初心者必見》１番最初のJavaScript！＃３	https://qiita.com/f_takahiro1118/items/825105beb50551e0f6c1	constdivdocumentcreateElementdiv③定数divに対してCSSのboxを指定適用させるdivclassListaddbox④四角形の中divに数字を表示させるためtextContentに変数iを代入。	2021-07-04 17:03:27
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	phpでrssの取得を行って、エラーが出た場合の処理について（サイトが消滅している場合の処理）。	https://teratail.com/questions/347621?rss=all	phpでrssの取得を行って、エラーが出た場合の処理についてサイトが消滅している場合の処理。	2021-07-04 17:58:37
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	4乗ガウス（他に分かりやすいコードあれば共有させてください）	https://teratail.com/questions/347620?rss=all	eiltinumnumtoiiputsnumend	2021-07-04 17:47:01
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	ウェルカムメッセージ	https://teratail.com/questions/347619?rss=all	discordjs	2021-07-04 17:44:26
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	トリボナッチ数列（他に分かりやすいコードあれば共有させてください）	https://teratail.com/questions/347618?rss=all	トリボナッチ数列他に分かりやすいコードあれば共有させてください【条件】・最初のつの数は「」である・それ以降は、直前のつの整数の和を並べる番目nbspnbspnbsp番目nbspnbspnbsp番目nbspnbsp番目の整数を求める。	2021-07-04 17:42:28
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	Herokuに公開したアプリが気づいたら壊れて動かなくなっている	https://teratail.com/questions/347617?rss=all	Herokuに公開したアプリが気づいたら壊れて動かなくなっているタイトルの通り、Herokuに公開して動作していたアプリに久しぶりにアクセスしたら、壊れていました。	2021-07-04 17:40:32
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	Safari環境でtextarea改行時のcaretの高さを変更したい	https://teratail.com/questions/347616?rss=all	Safari環境でtextarea改行時のcaretの高さを変更したいSafari環境でtextarea改行時のcaretの高さを変更したいタイトルの通りですが、Safari環境でtextarea改行時のcaretの高さを変更したいです。	2021-07-04 17:37:03
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	フォトグラメトリで作ったテクスチャをBlenderで調整する方法はありますか	https://teratail.com/questions/347615?rss=all	blender	2021-07-04 17:34:56
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	技詳細ページにい”ぎだい”！！（格ゲー技表アプリ）	https://teratail.com/questions/347614?rss=all	技詳細ページにいぎだい格ゲー技表アプリ解決したいこと・前提各キャラクターの技一覧ページmovesindexから技をクリックするとその技の詳細ページmovesshowに遷移するようにしたいのですが、showアクションの設定に手こずっております。	2021-07-04 17:32:16
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	pythonでリストから、最初に現れた数を取り出す方法がわからない	https://teratail.com/questions/347613?rss=all	pythonでリストから、最初に現れた数を取り出す方法がわからない例えばリストでまず最初に現れた数を取り出したいです。	2021-07-04 17:16:51
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	::afterで作成した矢印のリンクに対して:hoverで色を変えたい。	https://teratail.com/questions/347612?rss=all	afterで作成した矢印のリンクに対してhoverで色を変えたい。	2021-07-04 17:15:51
Ruby	Rubyタグが付けられた新着投稿 - Qiita	【Ruby on Rails】超便利！request.refererを活用して元のページにリダイレクトする方法	https://qiita.com/nao0725/items/54ed720300370dc25dc8	【RubyonRails】超便利requestrefererを活用して元のページにリダイレクトする方法MyProfileプログラミング学習歴ヶ月目のアカウントですプログラミングスクールで学んだ内容や自分が躓いた箇所等のアウトプットの為に発信しています。	2021-07-04 17:49:35
AWS	AWSタグが付けられた新着投稿 - Qiita	AWS CLIの振り返り ~IAM入門編(ユーザー/グループ)~	https://qiita.com/kuraboshi/items/91bb47a3cb70b0dddd9d	AWSリソースからのアクセスを認証する際に使用される。	2021-07-04 17:43:26
Docker	dockerタグが付けられた新着投稿 - Qiita	dockerイメージを消したい時のバルスコマンド	https://qiita.com/hamkiti/items/f11135c3d1d54d74e84c	便利ですがとても強力なので行ずつ解説します。	2021-07-04 17:18:05
Azure	Azureタグが付けられた新着投稿 - Qiita	Azure Static Web Apps Custom Domain 設定 (AWSのRoute53で取得したドメインとAzure DNS使用)	https://qiita.com/motoJinC25/items/a60e76fbe9bc0bdf7eb7	AddメニュをクリックしてDomainnameに変更したドメインを作成します。	2021-07-04 17:09:17
Git	Gitタグが付けられた新着投稿 - Qiita	git init するときのデフォルトブランチ名をmainに設定する方法	https://qiita.com/ryuyaF/items/b9ae3f6391c9fd4572b0	gitinitするときのデフォルトブランチ名をmainに設定する方法やり方gitconfigglobalinitdefaultBranchmainこれでgitinitしたときのデフォルトブランチ名がmainに設定されます詳細ほぼ年前ですがgitのバージョンからinit時のデフォルトブランチ名に関する設定が可能になっています詳細は以下記事を参照くださいちなみにこれまた随分前の話ですがGitHubは年月にリポジトリのデフォルトブランチをmainに変更することを発表しています。	2021-07-04 17:57:21
Ruby	Railsタグが付けられた新着投稿 - Qiita	スクリーンキャストを写経しながらHotwireを理解する（その５）	https://qiita.com/NaokiIshimura/items/267ef63dd573f8521562	投稿してる人の理解度Hotwireを利用すればRailsアプリでSPAが実現できるturboframeを利用することでページ内に別ページの部品を描画できるようになるturboframe内のリンクから別ページへ遷移させる場合はdataturboframetopを付けるturboframetagでsrcを指定すると別ページの部品を挿入できるturboframeでtargettopを指定するとページ全体を再描画するturbostreamレスポンスでappendすると、ページの差分のみ追加できるもくじスクリーンキャストを写経しながらHotwireを理解するそのHotwireの説明Hotwireを導入する準備スクリーンキャストを写経しながらHotwireを理解するそのページの一部をturboframeにするturboframe内のリンクから別ページへ遷移できるようにするスクリーンキャストを写経しながらHotwireを理解するそのturboでページ全体を更新するスクリーンキャストを写経しながらHotwireを理解するそのturbostreamでページに差分を追加するスクリーンキャストを写経しながらHotwireを理解するそのstimulusでフォームをリセットする️stimulusでフォームをリセットするJavascriptコントローラresetformcontrollerjsを追加します。	2021-07-04 17:58:22
Ruby	Railsタグが付けられた新着投稿 - Qiita	スクリーンキャストを写経しながらHotwireを理解する（その４）	https://qiita.com/NaokiIshimura/items/4515c3ba1933977219d3	投稿してる人の理解度Hotwireを利用すればRailsアプリでSPAが実現できるturboframeを利用することでページ内に別ページの部品を描画できるようになるturboframe内のリンクから別ページへ遷移させる場合はdataturboframetopを付けるturboframetagでsrcを指定すると別ページの部品を挿入できるturboframeでtargettopを指定するとページ全体を再描画するもくじスクリーンキャストを写経しながらHotwireを理解するそのHotwireの説明Hotwireを導入する準備スクリーンキャストを写経しながらHotwireを理解するそのページの一部をturboframeにするturboframe内のリンクから別ページへ遷移できるようにするスクリーンキャストを写経しながらHotwireを理解するそのturboでページ全体を更新するスクリーンキャストを写経しながらHotwireを理解するそのturbostreamでページに差分を追加するlt続きは執筆中gt️turbostreamでページに差分を追加するMessageコントローラmessagescontrollerにturbostreamフォーマットでのレスポンスを追加します。	2021-07-04 17:57:53
Ruby	Railsタグが付けられた新着投稿 - Qiita	【Ruby on Rails】超便利！request.refererを活用して元のページにリダイレクトする方法	https://qiita.com/nao0725/items/54ed720300370dc25dc8	【RubyonRails】超便利requestrefererを活用して元のページにリダイレクトする方法MyProfileプログラミング学習歴ヶ月目のアカウントですプログラミングスクールで学んだ内容や自分が躓いた箇所等のアウトプットの為に発信しています。	2021-07-04 17:49:35
海外TECH	DEV Community	Commit, Push, Merge: GSoC Coding Phase 1	https://dev.to/rohanlekhwani/commit-push-merge-gsoc-coding-phase-1-51i0	Commit Push Merge GSoC Coding Phase What if I told you that the GSoC Coding Period is not all about coding Surprised We re in the middle of the Phase of the Coding Period The Coding Period and coding in general does not involve only code There s another factor that is super important I ve touched upon this towards the end I ve been making steady progress on my GSoC project Poll App Mega Extensions and am additionally also contributing to RCCommunity ーRocket Chat s portal to its community What Features Have I Built into the Poll App Improved Response VisualizationsThe current Poll App has really bland and grayscale response visualizations There s no way to know which response is the winner The only way to know the total number of votes casted is to manually count them The winner response needed to stand out from the “non winner responses This required rendering the winner response in a different color perhaps There s a tricky use case here What if there are multiple winning reponses In that case all of them should be rendered with the same color Since apps within Rocket Chat make use of UIKit for rendering the frontend I added a block for dynamically updating the number of total votes casted Here s the Poll App after a facelift P The PR for this feature can be found here Word Cloud GenerationTexts are okay Bar graphs are good Wordclouds are awesome What if the Poll App could show a cool word cloud of all the responses Rocket Chat s use of UIKit for Apps is a major limitation towards this RC Apps don t allow you to add an external npm package This means we needed to bid adieu to out of the box packages like d cloud Since the only way to attach images to the message posted by a Rocket Chat App is through an image URL We needed an API That s when I stumbled across Quickchart ーan open source Chart API that can also do word clouds And then there was another problem Some organizations host an isolated server of Rocket Chat That means no access to public Internet That means no Quickchart Thankfully my mentor and I had an idea to provide a setting for the Poll App where server administrators could let the Poll App know beforehand whether it could access the Internet If it could ーuse Quickhart if not ーgenerate a poll summary For those who speak code here are the issue and PR corresponding to the word cloud feature Mixed Visibility of ResponsesThe Poll App offered only types of poll visibilities ーOpen and Confidential Everyone could see who voted what on an open poll No one could see who voted what on a confidential poll There was no middle way where members could see voter identities on some responses and on others they appeared as “Anonymous I built a modal that would open up only when the poll creator chose mixed visibility The challenge was remembering which options the user wanted to remain anonymized after submitting this modal This was tackled by defining an anonymousOptions property within the Poll interface In cases where open or confidential visibilities polls were created this would be an empty array Doing this keeps the anonymous marked options along with the rest of the Poll properties img alt Mixed Visibility feature in Action English and Spanish were selected as Anonymous lt br gt src dev to uploads s amazonaws com uploads articles hfkeqwzdiquhbo png Here are the issue and PR for the Mixed Visibility feature What s the Super Important Factor I Talked About Communicating thoroughly with not only your mentor but anyone who can help you When I was coding the word cloud feature I even reached out to Ian Webster the creator of Quickchart which saved us from an incorrect architectural move This was the third article of my GSoC journey at Rocket Chat I m writing biweekly blogs Follow my voyage on Medium and Dev In case you haven t checked out the previous blog about How to Ensure a Successful Community Bonding Period hit the link below How to Ensure a Successful Community Bonding PeriodLike what I do Help me pull my next all nighter Consider buying me a coffee Rohan Lekhwani is an open source contributor and enthusiast You can connect with him on LinkedIn GitHub Twitter and his website	2021-07-04 08:31:03
海外TECH	DEV Community	Top 10 React Tricks Every Developer Should Use	https://dev.to/kpiteng/top-10-react-tricks-every-developer-should-use-8nj	Top React Tricks Every Developer Should UseDiscover a set of React best coding practices tips and tricks that should be known by all developers Key Points Use State Management Library Redux MobX Apollo Use Event Listener instead of Static MethodRemove All Listener In UnMountConfig for Environment Setup Test Live StagingUse Context for Themes management Dark Live ThemeUse Storybook Isolated Reusable Component DevelopmentMinimize use of third party library Instead create own Code LogicScale and Resize Images Cache ImagesFirebase Performance MonitoringAvoid re rendering using useMemo useCallBack Use State Management Library Redux MobX Apollo Many times we are using local variables array objects declarations that are specific to components but what happens the same would be used in other components then Use State Management Library so you can access your variables array objects though the app you can update and listen for change in any component Redux Redux Saga Redux Rematch MobX State Tree Apollo are popular state management libraries which allow developers to access State Variables through the app and it will persist your data so next time the user comes back to application data fetched from storage and assigned to state variables Use Event Listener instead of Static MethodWe are on one component and we want to call one function of the previous component or any other component at that time we are using static methods in the class component Instead of using Static Method I approach using React Native Event Listeners You can add a listener in a component where you want to listen and emit an event from where you want to call a function It s very simple to integrate Check out react native event listenersnpm install save react native event listenersoryarn add react native event listenersimport EventRegister from react native event listeners RECEIVER COMPONENT class Receiver extends PureComponent constructor props super props this state data componentWillMount this listener EventRegister addEventListener yourEventName data gt this setState data componentWillUnmount EventRegister removeEventListener this listener render return lt Text gt this state data lt Text gt SENDER COMPONENT const Sender props gt lt TouchableHighlight onPress gt EventRegister emit yourEventName Task Completed gt lt Text gt Send Event lt Text gt lt TouchableHighlight gt Remove All Listener In UnMountWe are adding listeners to listen events like KeyboardListeners EventListeners NavigationEventListeners TabEventListeners etc When you add listeners on componentWillMount it will create listeners for you but if you forget to remove it on componentWillUnMount then next time when you back to component again it will create another listener object which conflicts with memory leaks and unexpected listeners behaviour So best is to remove listeners in componentWillUnMount to it will free out memory and provide you un interrupted behaviour Related Article See how React Clean Architecture helps to write Clean Structured Modularized and Best Coding Practices for Rect Developers Config for Environment Setup Test Live StagingWe are all using different environments like Test Staging Production Live environment There are different API URLs Constant Variables Keys etc depending on Environment So It s recommended to use react native config to setup your configuration for Test Stage and Live environment Please follow steps provided in react native config and manage your environment Use Context for Themes management Dark Live ThemeNowadays we are used to Light amp Dark themes developers also developing applications that support both Light amp Dark Themes But being developers how we manage Styles how to add manage listeners It s recommended to manage themes using React Context API you can set up Context in App js and add Themes Listener in App js so whenever a user changes theme App js get notified and themes will be changed and all the components will be notified So you can provide instant themes that change the effect to your users Use Storybook Isolated Reusable Component DevelopmentAlmost every application has components like TextInput Button etc that are used at various components Instead of doing separate code for each component it s recommended to create a common component and use it in Components advantage of doing this you can manage it from one place and it will reflect your changes in the whole application What happens if I say show me the component you developed and change it s property dynamically like color etc you need to import implement it in one component and run the application correct Is there any way I can see all Reusable Components in one place I can play with it change various props and validate it Storybook will provide an interface where you see all your developed ReUsable components at one place For that you simply create Story and improve your component into your Story So the Storybook will render all the stories It s very simple to integrate Please check out the Storybook article for more detail Minimize use of third party library Instead create own Code LogicWe are using too many third party library NPMs in our application for Small Small tasks Problem is whenever iOS Android React Native version upgrade we forget to upgrade our library NPMs which break our application Even we are not sure Creator of Library NPMs have updated with latest standard amp security which cause break in our application Instead of using Third Party Library NPMs for Small Small cases it s recommended to create your own code solution and so you can manage it update it easily Scale and Resize Images Cache ImagesImage optimization is very important in React Native App Performance If you have an E Commerce kind application or Application where there is maximum Image Rendering and images are not optimized then it will consume more user s memory which causes application crashes It s recommend to do following Use PNG image instead of JPGUse small resolution imagesUse the latest WEBP format for Image which helps to reduce binary size of iOS and Android Cache Images While having an ECommerce Or Heavy Image Showcase kind application it s recommended to use Image Caching to show images faster without flickering Prefer to use React Native Fast Image which works perfectly for both iOS amp Android Firebase Performance MonitoringFirebase Performance Monitoring helps developers to identify where and when performance can be improved so that you can fix those performance issues and give consistent experience to users It allows you to track HTTP Request Performance Traces also you can do custom tracing according to your business needs It s simple in integration and you will get a dashboard with reports That s simple Related Article How to improve the performance of a React Native App Avoid re rendering using useMemo useCallBackAlmost all applications have FlatList along with other components like Button TextInput FlatList reload FlatListItem on first time render also whenever any of the state variables changes FlatList will reload again with It s FlatListItem These are unwanted re rendering actually nothing changed on FlatList Item To avoid these re rendering use useMemo hooks that will first check any of the props changed then only it will reload FlatListItem Related Article Step By Step Integration Of React Hooks   useState useEffect useRef useMemo useCallback Thanks for reading Blog KPITENG DIGITAL TRANSFORMATIONwww kpiteng com blogs hello kpiteng comConnect Follow Us On Linkedin Facebook Instagram	2021-07-04 08:04:29
海外ニュース	Japan Times latest articles	Search continues for 20 missing people after deadly mudslide in Shizuoka	https://www.japantimes.co.jp/news/2021/07/04/national/shizuoka-landslide-search/	Search continues for missing people after deadly mudslide in ShizuokaThe tragedy is a sobering reminder of how extreme rain events are becoming a new normal both in Japan and abroad as global temperatures continue	2021-07-04 17:03:09
ニュース	BBC News - Home	Covid-19: Masks will become personal choice, says Robert Jenrick	https://www.bbc.co.uk/news/uk-57710527	jenrick	2021-07-04 08:23:52
ニュース	BBC News - Home	Philippines military plane crash kills at least 17 but many survive	https://www.bbc.co.uk/news/world-asia-57711597	crash	2021-07-04 08:34:15
ニュース	BBC News - Home	Cyprus appeals for help as deadly wildfire rips through forest	https://www.bbc.co.uk/news/world-europe-57710048	blaze	2021-07-04 08:46:42
北海道	北海道新聞	鈴木愛が２年ぶり通算１７勝目　資生堂レディース最終日	https://www.hokkaido-np.co.jp/article/563305/	神奈川県	2021-07-04 17:11:00
北海道	北海道新聞	遺族代表「町復興させる」、熊本　豪雨１年、住まい再建課題	https://www.hokkaido-np.co.jp/article/563259/	災害関連死	2021-07-04 17:04:05
北海道	北海道新聞	カンヌ壮行会で浜口監督意気込み　「素晴らしいものが映っている」	https://www.hokkaido-np.co.jp/article/563304/	意気込み	2021-07-04 17:01:00
北海道	北海道新聞	道内２人死亡、３９人感染　札幌は２１人　新型コロナ	https://www.hokkaido-np.co.jp/article/563292/	新型コロナウイルス	2021-07-04 17:02:07
北海道	北海道新聞	大相撲、１年４カ月ぶり地方開催　名古屋場所が初日	https://www.hokkaido-np.co.jp/article/563303/	名古屋場所	2021-07-04 17:01:00
ビジネス	東洋経済オンライン	成績が｢オール4以上｣の中学生の親の習慣3つ 最大のメリットは｢親子関係｣がよくなること | 子育て | 東洋経済オンライン	https://toyokeizai.net/articles/-/436716?utm_source=rss&utm_medium=http&utm_campaign=link_back	東洋経済オンライン	2021-07-04 17:30:00