| TECH |
Techable（テッカブル） |
般若心経を題材としたNFTアート・デジタル掛け軸を出展。落合陽一個展、阪急メンズ東京で開催 |
https://techable.jp/archives/185759
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般若心経 |
2022-09-25 00:00:45 |
| python |
Pythonタグが付けられた新着投稿 - Qiita |
Djangoで簡易検索エンジンを作ってみた~Youtubeキーワード検索エンジン~ |
https://qiita.com/Taku_nakahara/items/b21f286c8e430eedf017
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django |
2022-09-25 09:57:10 |
| python |
Pythonタグが付けられた新着投稿 - Qiita |
【個人開発】コンビニ✖️コンビ；コンビニの商品組み合わせを自動で提案してくれるWEBサービスを作りました【暇つぶしクソアプリ】 |
https://qiita.com/bluenouni/items/677f65a06a8e8a7b0f2e
|
作りました |
2022-09-25 09:44:19 |
| python |
Pythonタグが付けられた新着投稿 - Qiita |
Windowsのファイルの保存場所を開く(Open File Location)コマンドをPythonで実行する |
https://qiita.com/osorezugoing/items/afe69bd84fe7380a01e8
|
gtopenfilelocation |
2022-09-25 09:24:57 |
| python |
Pythonタグが付けられた新着投稿 - Qiita |
nginxでクライアントがリクエストした元のURLを取得する |
https://qiita.com/showchan33/items/97fd411707c6c34f16fb
|
nginx |
2022-09-25 09:13:13 |
| Ruby |
Rubyタグが付けられた新着投稿 - Qiita |
システムスペックではvisit hoge_urlではなくvisit hoge_pathと書かないとNet::ReadTimeoutエラーが発生する |
https://qiita.com/jnchito/items/6371b97dfb39ae003811
|
requirerailshe |
2022-09-25 09:34:17 |
| Ruby |
Rubyタグが付けられた新着投稿 - Qiita |
eachの入れ子 |
https://qiita.com/yu-ki87/items/cb9ef5e4996f721a1ce1
|
fruits |
2022-09-25 09:07:04 |
| AWS |
AWSタグが付けられた新着投稿 - Qiita |
SAM Pipelineで、設定ファイルから別々のパラメータを与える方法 |
https://qiita.com/a_b_/items/c008a769e8394dec6c01
|
sampipeline |
2022-09-25 09:45:05 |
| Docker |
dockerタグが付けられた新着投稿 - Qiita |
Djangoで簡易検索エンジンを作ってみた~Youtubeキーワード検索エンジン~ |
https://qiita.com/Taku_nakahara/items/b21f286c8e430eedf017
|
django |
2022-09-25 09:57:10 |
| GCP |
gcpタグが付けられた新着投稿 - Qiita |
GitLabにGoogleアカウントでログインできるようにする |
https://qiita.com/kamina/items/c2f22d9b609f4bf96a6f
|
gitlab |
2022-09-25 09:01:50 |
| Azure |
Azureタグが付けられた新着投稿 - Qiita |
Azure の Windows 11 マルチセッション仮想マシンで FSLogix ユーザープロファイルを使う構成を Azure CLI で作ってみた |
https://qiita.com/mnrst/items/6bf5682255bced6b7e93
|
azure |
2022-09-25 09:06:21 |
| Ruby |
Railsタグが付けられた新着投稿 - Qiita |
システムスペックではvisit hoge_urlではなくvisit hoge_pathと書かないとNet::ReadTimeoutエラーが発生する |
https://qiita.com/jnchito/items/6371b97dfb39ae003811
|
requirerailshe |
2022-09-25 09:34:17 |
| 海外TECH |
DEV Community |
React - The hidden function for keys |
https://dev.to/noriller/react-the-hidden-function-for-keys-29a8
|
React The hidden function for keysYou know you should pass keys for lists so React doesn t get mad at you right So you think why not just key everything Better yet…why not make it random Keys Outside of lists that you map you might think keys have no function after all most if not all tutorials only mention keys in the context of mapping a list right If you re like me you probably only key lists maybe you forget sometimes see the warning and add the key But some people go in the other direction and start using key everywhere Sometimes using something random like Math random or new Date getTime You might think “Weird but okay… except no it s not okay and you might end up with a bug impossible to debug unless you go down the hole of debugging the actual React code Things to know about the keysYou can have the SAME key as long as they are on different levels even in the same component function ThisIsOk return lt div key this is ok gt lt AnyComponent key this is ok gt lt div gt here wouldn t be ok lt AnotherComponent key this is ok gt lt div gt lt div gt This happens because well…trees If you see how React renders things you know it s basically one big tree of components also that s why you can t have a component returning multiple components without a wrapper React picks all components and makes a list of them and when you put a key on them a few things will happen React doesn t need to “add a key to it or whatever it does internally React will treat any component with that key as the same component React will easily remove components if it doesn t find the key again Examples Here is a little sandbox try to use the inputs…if you can What s happening there is that the components with something random are being destroyed on each render because every time the component needs to re render it finds a different key Be it directly or indirectly Then you have the ones without keys or with a static key Also the one with the same key but on different levels Finally the weird one two components with the same key but alternating which one is being rendered Since it s the same key same place you re basically saying it s the same component and the state persists What does this mean You ve probably encountered a bug where you couldn t make a component reset no matter what so you started using useEffect with some dependency to reset the state…well you re not alone But now…you know why and you also know that you just need to pass it a different key to reset the state…no useEffect needed You also know that you can render the same component in the same place and it retains the state it had Although I m not sure where to leverage this Even that example…usually we would just bring whatever it needs to make the if works inside Cover Photo by Samantha Lam on Unsplash |
2022-09-25 00:09:36 |
| ニュース |
@日本経済新聞 電子版 |
ゴルフカートに電子看板 富裕層狙い広告の成算は？
https://t.co/ryNfqzKoPs |
https://twitter.com/nikkei/statuses/1573838785300733952
|
電子看板 |
2022-09-25 00:56:21 |
| ニュース |
@日本経済新聞 電子版 |
「無期転換ルール」、企業に通知義務 厚労省検討
https://t.co/QmOFBLO1iP |
https://twitter.com/nikkei/statuses/1573836100950335488
|
通知 |
2022-09-25 00:45:41 |
| ニュース |
@日本経済新聞 電子版 |
自宅に「充電ステーション」 スマホも掃除機も1カ所で
https://t.co/ehdC7qLOcd |
https://twitter.com/nikkei/statuses/1573832340572622848
|
自宅 |
2022-09-25 00:30:45 |
| ニュース |
@日本経済新聞 電子版 |
動画が作る人間関係に期待 シニア層にも新たな風
https://t.co/bAvPw3tHlL |
https://twitter.com/nikkei/statuses/1573829714556628992
|
人間関係 |
2022-09-25 00:20:18 |
| ニュース |
@日本経済新聞 電子版 |
長谷部誠の見た森保J 「W杯へすごく期待が持てる」
https://t.co/5riGIQXVMl |
https://twitter.com/nikkei/statuses/1573824774261772288
|
長谷部誠 |
2022-09-25 00:00:41 |
| 海外ニュース |
Japan Times latest articles |
North Korea launches missile ahead of U.S. vice president’s visit to region |
https://www.japantimes.co.jp/news/2022/09/25/asia-pacific/japan-north-korea-missile-kamala-harris/
|
North Korea launches missile ahead of U S vice president s visit to regionJapan s defense chief said that the apparent ballistic missile may have flown on an irregular trajectory and was believed to have landed outside the country s |
2022-09-25 09:05:22 |
| ニュース |
BBC News - Home |
Mick Lynch: Talks with new transport secretary 'a good start' |
https://www.bbc.co.uk/news/uk-politics-63023276?at_medium=RSS&at_campaign=KARANGA
|
secretary |
2022-09-25 00:39:35 |
| ニュース |
BBC News - Home |
Prisoner released by Russia 'treated worse than a dog' |
https://www.bbc.co.uk/news/uk-63022151?at_medium=RSS&at_campaign=KARANGA
|
confinement |
2022-09-25 00:06:39 |
| ニュース |
BBC News - Home |
North Korea fires suspected ballistic missile into sea |
https://www.bbc.co.uk/news/world-asia-63023889?at_medium=RSS&at_campaign=KARANGA
|
president |
2022-09-25 00:30:12 |
| ニュース |
BBC News - Home |
Joe Joyce v Joseph Parker: Briton's granite chin sees him through to 11th-round knockout |
https://www.bbc.co.uk/sport/boxing/63023579?at_medium=RSS&at_campaign=KARANGA
|
manchester |
2022-09-25 00:01:46 |
| ニュース |
BBC News - Home |
CIA museum: Inside the world's most top secret museum |
https://www.bbc.co.uk/news/world-us-canada-63023876?at_medium=RSS&at_campaign=KARANGA
|
museumit |
2022-09-25 00:18:32 |
| 北海道 |
北海道新聞 |
セネガルなど勝つ サッカー国際親善試合 |
https://www.hokkaido-np.co.jp/article/735814/
|
国際親善試合 |
2022-09-25 09:21:00 |
| 北海道 |
北海道新聞 |
北朝鮮が弾道ミサイル発射 日本海へ、米韓演習に対抗 |
https://www.hokkaido-np.co.jp/article/735808/
|
参謀本部 |
2022-09-25 09:06:18 |
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