投稿時間:2021-10-17 15:19:47 RSSフィード2021-10-17 15:00 分まとめ(23件)

カテゴリー等	サイト名等	記事タイトル・トレンドワード等	リンクURL	頻出ワード・要約等/検索ボリューム	登録日
TECH	Engadget Japanese	ホクホク系もネットリ系も。焼き芋を簡単操作で焼き分けできるオーブントースター	https://japanese.engadget.com/myc-grille-toaster-055556704.html	「ホクホク系」は高温で一気に一定時間焼き上げ、「ネットリ系」は低温でじっくり長時間焼き、十分に甘みを引き出し、仕上げに高温で焼くことで蜜滴るネットリした焼き芋に仕上げます。	2021-10-17 05:55:56
TECH	Techable（テッカブル）	コントローラーと8K映像で文化財を観る「8Kで文化財“ふれる・まわせる名茶碗”」	https://techable.jp/archives/164632	東京国立博物館	2021-10-17 05:00:20
python	Pythonタグが付けられた新着投稿 - Qiita	[Django]校内2ちゃんねるをつくる【Pythonanywhere】	https://qiita.com/mio256/items/8e92a72fbdc06f45600b	ゴリゴリC言語プログラマーとして生きてきたが、時代には巻かれなければと思いPythonのWebアプリケーションフレームワークであるDjangoに手を出した。	2021-10-17 14:00:30
js	JavaScriptタグが付けられた新着投稿 - Qiita	【学習メモ】Vue CLIを用いてVue.jsを使ってみる！	https://qiita.com/Ooooooomin_365/items/65c390fdbb724b05f70d	インストールが終わると以下のように複数のフォルダやファイルが作られていることが分かります。	2021-10-17 15:00:05
js	JavaScriptタグが付けられた新着投稿 - Qiita	【Vue.js】v-for について	https://qiita.com/Yudai_35_/items/dcbec56c23deff3f0847	HTMLltdividappgtltolgtltlivfor①in①sgt①ltligtltolgtltdivgtVuejsvarappnewVueelappdata①sRedGreenBlue最後に今回はvforについてアウトプットしました。	2021-10-17 14:24:52
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	JSのgetElementById()の使い方について	https://teratail.com/questions/364831?rss=all	JSのgetElementByIdの使い方について疑問に思いまして、質問です。	2021-10-17 14:58:00
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	zipfileライブラリーについて	https://teratail.com/questions/364830?rss=all	putsamplezipasffprintdir	2021-10-17 14:55:50
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	PARTITION BY の前に置くCOUNT()について	https://teratail.com/questions/364829?rss=all	PARTITIONBYの前に置くCOUNTについてBigQuerynbspを学習中です。	2021-10-17 14:46:58
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	beautifulsoupの条件抽出	https://teratail.com/questions/364828?rss=all	beautifulsoupの条件抽出前提・実現したいこと下記のコードでリンク先画像を全て抽出しました。	2021-10-17 14:46:32
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	JavaScript 論理演算子の中で（||）だけが機能しない	https://teratail.com/questions/364827?rss=all	JavaScript論理演算子の中でだけが機能しない前提・実現したいことif文の中で、が使えるようにしたい。	2021-10-17 14:41:59
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	NuxtJsでプロジェクトを作成時にエラー	https://teratail.com/questions/364826?rss=all	NuxtJsでプロジェクトを作成時にエラー前提・実現したいこと閲覧ありがとうございます。	2021-10-17 14:36:47
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	ラズパイでwiringpiライブラリを用いてのコンパイルができない。glibcを最新のバージョンにしたい。	https://teratail.com/questions/364825?rss=all	ラズパイでwiringpiライブラリを用いてのコンパイルができない。	2021-10-17 14:28:41
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	conda 経由で japanaze-matplotlib　をインストールできない	https://teratail.com/questions/364824?rss=all	conda経由でjapanazematplotlibをインストールできないimportnbspjapanizematplotlibとしたところModuleNotFoundErrornbspNonbspmodulenbspnamednbspaposjapanizematplotlibaposが出ました。	2021-10-17 14:22:11
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	opnegl その回転を維持したまま別の軸を回転する方法	https://teratail.com/questions/364823?rss=all	opneglその回転を維持したまま別の軸を回転する方法提示コードのmaincpp部のコメント部のコードですが。	2021-10-17 14:13:39
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	特定の型を返す関数をeslintかtscで禁止したい	https://teratail.com/questions/364822?rss=all	特定の型を返す関数をeslintかtscで禁止したいInternalTypeという関数の内部でしか使われない変数の型が定義されてあり、これが関数の返り値になっている場合は全て誤りなので事前に検知したいという状況があります。	2021-10-17 14:03:06
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	cocos2dxで変数の処理を外部で行いたい	https://teratail.com/questions/364821?rss=all	cocosdxで変数の処理を外部で行いたいcocosdxで開発をしています。	2021-10-17 14:01:37
Ruby	Railsタグが付けられた新着投稿 - Qiita	rails本番環境（EC2）でWe're sorry, but something went wrong.	https://qiita.com/isukeaima/items/6bf4a6a6a195651eb1b6	なので試しにviコマンドで行目をコメントアウトしブラウザのリロードをかけてみましたviappviewslayoutsapplicationhtmlerbですが、またもやWeresorrybutsomethingwentwrongの表示が出てきたので。	2021-10-17 14:37:59
Ruby	Railsタグが付けられた新着投稿 - Qiita	Heroku Railsアプリデプロイ時にrake assets:precompileでNoMethodError: undefined method `[]' for nil:NilClass	https://qiita.com/akinov/items/c392493ed9a2ef058eab	HerokuRailsアプリデプロイ時にrakeassetsprecompileでNoMethodErrorundefinedmethodxfornilNilClass久しぶりにrailsnewしてHerokuにデプロイした時にエラーgtPreparingappforRailsassetpipelineRunningrakeassetsprecompilerakeabortedNoMethodErrorundefinedmethodfornilNilClassmasterkeyをHeroku環境変数に設定するmasterkeyが登録されていないことが原因でした。	2021-10-17 14:23:21
海外TECH	DEV Community	Generating accessor methods easily	https://dev.to/masaushi/generating-accessor-methods-easily-3p61	Generating accessor methods easilyHi all I have made a go tool to generate accessor methods getter or setter for unexported struct fields so let me introduce it masaushi accessory accessor methods generator for Go programming language accessoryaccessory is an accessor generator for Go programming language What is accessory Accessory is a tool that generates accessor methods from any structs Sometimes you might make struct fields unexported in order for values of fields not to be accessedor modified from anywhere in your codebases and define getters or setters for values to be handled in a desired way But writing accessors for so many fields is time consuming but not exciting or creative Accessory frees you from tedious monotonous tasks InstallationTo get the latest released versionGo version lt go get github com masaushi accessoryGo go install github com masaushi accessory latestUsageDeclare Struct with accessor Tagaccessory generates accessor methods from defined structs so you need to declare a struct and fields with accessor tag Values for accessor tag is getter and setter getter is for generating getter method and setter is for setter methods Here… View on GitHubSometimes you might make struct fields unexported in order for values of the fields not to be accessed or modified from anywhere in your codebases Making struct fields unexported will prevent data from unexpected use or change But you sometimes might need accessor methods for some fields to get set data in a desired way However writing accessors for many fields is time consuming but not exciting or creative This tool frees you from that tedious monotonous task Example Declare a model with accessor tag type MyStruct struct field string accessor getter field int accessor setter field time Time accessor getter setter Run accessory command accessory type MyStruct Accessor methods will be generated func m MyStruct Field string return m field func m MyStruct SetField val int m field val func m MyStruct Field time Time return m field func m MyStruct SetField val time Time m field val You can customize method nametype MyStruct struct field string accessor getter GetFirstField field int accessor setter ChangeSecondField Generated methods will befunc m MyStruct GetFirstField string return m field func m MyStruct ChangeSecondField val int m field val You can also generate accessors with go generate go generate accessory type MyStructtype MyStruct struct field string accessor getter field int accessor setter ConclusionGenerating accessors easily will save your time and help you focus on writing important business logics I m looking forward to getting your feedback Have a wonderful day	2021-10-17 05:16:29
海外TECH	DEV Community	How to Force Re-Render a React Component & Should you do it?	https://dev.to/ruppysuppy/how-to-force-re-render-a-react-component-should-you-do-it-5h1p	How to Force Re Render a React Component amp Should you do it React automatically Re Renders the components whenever any of its props or its state is updated But quite often beginners especially me in my early days find it quite difficult getting a component re rendered First let s look at the methods we can use to re render a component and discuss whether we should really force a re render or let React take care of it Re Render a Class ComponentClass Components provide you a built in method to trigger a Re Render Simply use forceUpdate method to force React to Re Render the component class App extends React Component constructor super this forceUpdateHandler this forceUpdateHandler bind this forceUpdateHandler this forceUpdate render return lt div gt lt button onClick this forceUpdateHandler gt Change Number lt button gt lt h gt Random Number Math random lt h gt lt div gt Re Render a Functional ComponentUnfortunately Functional Component doesn t have a forceUpdate method for ease of use You can use useState hook to simulate an update or create a custom hook too forceUpdate hookfunction useForceUpdate const value setValue useState return gt setValue value gt value componentfunction App const forceUpdate useForceUpdate return lt div gt lt button onClick forceUpdate gt Change Number lt button gt lt h gt Random Number Math random lt h gt lt div gt Should you Force Re Render a React Component Now for answering the most important question NO NO and NO In most cases you DEFINITELY SHOULD NOT force a re render There are a few niche cases like modifying a blockchain which only returns a transaction hash and no data where the forced re render makes sense to fetch the updated data from the blockchain Debugging Why the Component isn t UpdatingLet s look at some of the common issues why React fails to update your components and find solutions for them as well Incorrectly Updated StateLet s consider the following example const App gt const user setUser useState name age const updateUser gt user name Tom setUser user return lt gt lt h gt Name user name lt h gt lt button onClick updateUser gt Update User lt button gt lt gt The App component would not be re rendering the user s name even when the Update User button is clicked React evaluates state changes by checking its shallow equality also called reference equality which checks to see if both the current and the new value for state reference the same object In our example we updated one of the properties of the user object but we technically made setUser the same object reference and thus React didn t perceive any change in its state As React documentation mentions State should be treated as immutable So how do we fix it We could create a new object with the updated values const updateUser gt setUser user name Tom Incorrectly Updated Props without state change Incorrectly updating props without a state change can also leads to bugs Let s look at an example let time new Date setInterval gt console log time const App gt useEffect gt const intervalId setInterval gt time new Date return clearInterval intervalId return lt Clock time time gt The Clock in the example doesn t update the time after the first load To confirm that the time is being properly updated you can just un comment the console log Every second the runtime will update the variable time which is then passed to our Clock component for rendering When the state changes App parent component is re rendered thus triggering a re rendered in Clock child component with the updated time Thus updating state is what actually triggers the re render which is then propagated through the props So updating the state is ABSOLUTELY CRUCIAL So to fix the issue we could use the following const App gt const time setTime useState new Date useEffect gt const intervalId setInterval gt setTime new Date return clearInterval intervalId return lt Clock time time gt Wrapping upJust like everything in this world this article too has to end In the article we went through some of the ways you can force re render your React Components as well as the common causes of why React fails to re render the components Hope this helps you Best of Luck with your React Development Journey Thanks for readingLooking for ways to boost your productivity Check out my Bi Weekly Productivity Blogs on MediumNeed a Top Rated Front End Development Freelancer Contact me on UpworkWant to see what I am working on Check out my GitHubI am a freelancer who will start off as a Digital Nomad in mid Want to catch the journey Follow me on InstagramFollow my blogs for Weekly new Tidbits on DevFAQThese are a few commonly asked questions I get So I hope this FAQ section solves your issues I am a beginner how should I learn Front End Web Dev Look into the following articles Front End Development RoadmapFront End Project IdeasWould you mentor me Sorry I am already under a lot of workload and would not have the time to mentor anyone Would you like to collaborate on our site As mentioned in the previous question I am in a time crunch so I would have to pass on such opportunities Connect to me on LinkedIn Portfolio Upwork GitHub Instagram	2021-10-17 05:06:33
海外ニュース	Japan Times latest articles	North Korea may test long-range missile over next year, Pentagon intelligence agency says	https://www.japantimes.co.jp/news/2021/10/17/asia-pacific/north-korea-ballistic-tests-us/	North Korea may test long range missile over next year Pentagon intelligence agency saysNorth Korea may resume long range ballistic missile tests over the next year the U S Defense Intelligence Agency said in a report analyzing the country s military	2021-10-17 14:07:46
ニュース	BBC News - Home	Haiti: US missionaries reportedly kidnapped in Port-au-Prince	https://www.bbc.co.uk/news/world-latin-america-58943252?at_medium=RSS&at_campaign=KARANGA	american	2021-10-17 05:11:55
ニュース	BBC News - Home	UK's Cameron Norrie into first Masters 1,000 final	https://www.bbc.co.uk/sport/tennis/58940867?at_medium=RSS&at_campaign=KARANGA	bulgarian	2021-10-17 05:17:25