投稿時間:2021-07-10 16:19:45 RSSフィード2021-07-10 16:00 分まとめ(29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
IT	気になる、記になる…	｢妖怪ウォッチ｣の第1作目がスマホ向けに登場 − リリース記念セールも開催中	https://taisy0.com/2021/07/10/142859.html	妖怪ウォッチ	2021-07-10 06:16:04
TECH	Engadget Japanese	蚊や虫を、おびき寄せ、ヒューッと吸い込んで、パチッと打撃。「ファン付蚊取りラケット」	https://japanese.engadget.com/mosquito-racket-064848409.html	USB充電式のため、室内だけでなく室外やアウトドアにもおすすめです。	2021-07-10 06:48:48
IT	ITmedia 総合記事一覧	[ITmedia ビジネスオンライン] 東京ディズニーランド・シー、時短営業を延長　8月22日まで	https://www.itmedia.co.jp/business/articles/2107/10/news042.html	itmedia	2021-07-10 15:18:00
IT	MOONGIFT	LinearMouse - マウスの加速する動作を取り除く	http://feedproxy.google.com/~r/moongift/~3/zQvK_ADPSfY/	LinearMouseマウスの加速する動作を取り除くOS側で便利だと思って追加した機能も、それまで使ってこなかった人にすると不便に感じるものがあります。	2021-07-10 17:00:00
python	Pythonタグが付けられた新着投稿 - Qiita	Poetryを使ってPythonパッケージ(CLI)作成	https://qiita.com/mykysyk@github/items/5f08658d0ca2f1c6b32a	Poetryを使ってPythonパッケージCLI作成概要Python用のパッケージ管理ツールPoetryを使って郵便番号から住所を取得するPythonパッケージを作成しコマンドラインから実行できるようにしてみる。	2021-07-10 15:54:49
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	レスポンシブデザインにする際にCSSが反映されない	https://teratail.com/questions/348721?rss=all	レスポンシブデザインにする際にCSSが反映されない前提・実現したいこと現在、htmlcssを勉強していて、模写コーディングでレスポンシブ対応させる際にレスポンシブデザインが反映されない件について質問させていただきます。	2021-07-10 15:56:47
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	プログラム言語ごとに　なぜ特化するものがあるのかを知りたい！	https://teratail.com/questions/348720?rss=all		2021-07-10 15:52:40
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	JSONのnullや空を除去して出力	https://teratail.com/questions/348719?rss=all	JSONのnullや空を除去して出力実現したいこと以下のようなJSONからnullや空を除去して配列にして出力したいです。	2021-07-10 15:52:11
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	C エスケープシーケンスのファイル出力	https://teratail.com/questions/348718?rss=all	Cエスケープシーケンスのファイル出力実現したいことC言語でエスケープシーケンスのカラー変更を行い、その結果をテキストファイルでファイル出力したい。	2021-07-10 15:50:25
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	Rubyのクラス自作の際のエラーについて	https://teratail.com/questions/348717?rss=all		2021-07-10 15:38:40
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	ドメイン引っ越し。httpsにおけるwwwありの301リダイレクトがうまくいきません。	https://teratail.com/questions/348716?rss=all	ドメイン引っ越しにあたりリダイレクトをhtacessに適用しているのですがうまくいきません。	2021-07-10 15:34:00
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	オブジェクト参照がオブジェクトのインスタンスに設定されていないの解決方法	https://teratail.com/questions/348715?rss=all	音楽を流しながら行っているのですがエラーが出た後に録画せず実行してみると音楽だけ流れず実行はできます。	2021-07-10 15:32:12
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	Couldn't find User with 'id'=1エラーについて	https://teratail.com/questions/348714?rss=all	最初にuserとreserverのモデルの紐付けを行ったのですがその作業は恐らくうまく行っていると思います。	2021-07-10 15:24:27
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	AtCodrの問題で一部不正解になる理由がわかりません。	https://teratail.com/questions/348713?rss=all	AtCodrの問題で一部不正解になる理由がわかりません。	2021-07-10 15:19:57
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	wordpress ループの外で指定したカテゴリー名のリンクを取得したい。	https://teratail.com/questions/348712?rss=all	wordpressループの外で指定したカテゴリー名のリンクを取得したい。	2021-07-10 15:17:35
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	チェックボックスにチェックがついたとき、特定のチェックボックスのチェックを外したい	https://teratail.com/questions/348711?rss=all	チェックボックスにチェックがついたとき、特定のチェックボックスのチェックを外したい現在ハンバーガメニューと検索メニューをCSSのチェックボックスを使用して、実装しています。	2021-07-10 15:07:34
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	データフレームをpandasのgroupbyでグループ化してMySQLのテーブルに挿入したい	https://teratail.com/questions/348710?rss=all	データフレームをpandasのgroupbyでグループ化してMySQLのテーブルに挿入したい下記のようなデータフレームdfがあるとします。	2021-07-10 15:01:12
Ruby	Rubyタグが付けられた新着投稿 - Qiita	データベースからの情報の呼び出し。	https://qiita.com/yun02850266/items/07921c3eafe0484e9e22	呼び出し	2021-07-10 15:49:40
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６）	https://qiita.com/NaokiIshimura/items/c484215a88dc754944b4	railsコンソールを起動するrailscつめのルームのつめのメッセージを削除するRoomfirstmessagesfirstdestroyつめのルームにメッセージを追加するRoomfirstmessagescreatecontentNewfromtheconsoleつめのルームの最後のメッセージを更新するRoomfirstmessageslastupdatecontentChengefromtheconsole️turbostreamでページの差分を更新するルームRoomモデルブロードキャスト設定を追加します。	2021-07-10 15:20:39
海外TECH	DEV Community	Why is learning to code so hard?	https://dev.to/sophiekaelin/why-is-learning-to-code-so-hard-2921	Why is learning to code so hard A comment I ve heard from many people is “I ve tried to learn coding so many times but it never seems to click Is this something you ve said in the past Don t worry you are definitely not alone Having taught multiple introductory programming classes before I ve noticed this is a sentiment shared by a lot of newly starting developers Learning to code is hard And while it is true that some people find it easier to learn programming in comparison to others whether due to higher levels of interest or an aptitude for logical mathematical reasoning the way someone goes about teaching themselves to code will impact the likelihood of them developing and retaining those skills It is very tempting as it is when learning all new skills to jump straight into creating the cool things Like crocheting a jumper or baking a twelve story croquembouche It is important to differentiate between your end goal what you want to build and what you need to know learn in order to meet that goal Along with that there are various skills you should develop that will aid you in tackling any blockers or errors you may face when completing a project In this article I will be discussing my top tips I ve shared with hundreds of past students that helped them grow in confidence and ability as well as the tips previous mentors have shared with me Why is it so different to learning other skills Learning to code is often likened to learning a language or an instrument So methods such as spaced repetition are regularly recommended to learn new programming languages just as you would with learning any language As much as this is a helpful way of learning it is important to acknowledge the differences between learning a programming language and human language The main difference being There is no margin for error when writing code Let s say for example you are learning to speak French You practice your French by making conversation with a fluent French speaker If you were to mispronounce a word or jumble up the order of words in a sentence it is likely the other person will still understand what you were trying to say and a conversation will continue Unfortunately a computer does not have that sense of intuition There is no “close enough in programming ーonly right or wrong That s what makes it so difficult If you were to ask any person with coding experience I m certain they would be able to recall multiple times they were stuck on a silly bug for hours if not days because of a spelling mistake or syntax error And if they can t…well they re lying I ve personally felt the embarrassment of being stuck with broken code for hours only to realise I wrote “docmuent instead of “document or raged when I couldn t connect to my server only to realise it was running on port instead of A human can understand what was meant to be said but a compiler does not have that ability The unforgiving nature of code is what makes it such a difficult thing to learn It is also the reason why it is vital to develop a handful of important skills that both limit mistakes made and enable you to solve and debug errors in order to move forward from those mistakes What skills should I learn If you are trying to learn to code it is important to first learn the following four things Core programming conceptsProblem solving strategiesHow to debug your code andCore features of your chosen language Core Programming ConceptsIt is one thing to copy out an answer you saw on Stack Overflow It is another to understand what you are writing and what it is accomplishing It is near impossible to learn how to code without first understanding fundamental components that code is made of Good things to research first are Variables amp Primitive Data TypesCompound Data Types Strings Arrays Lists HashMaps Memory AllocationLoopsBoolean LogicThere are various online courses available to teach you these concepts as well as countless Youtube videos For the most part these are transferable skills across different languages Videos by “The Coding Train are what I watched when I first started learning Another great resource is “Code Academy if you are looking to challenge yourself and receive feedback Problem Solving StrategiesOnce you ve got the core concepts down you should spend some time practicing completing functions to expose yourself to different scenarios and generate your own strategies for how to overcome them Expose yourself to popular searching or sorting algorithms Practicing implementing well known algorithms will assist you in developing a better understanding of computer science concepts Plus the more practice you get the better you become at problem solving This may take a bit of time to improve at but it can also be very fun Here are some fun resources to practice with Cracking the Coding Interview unpacks common questions given in coding interviews Coding Bat I used this all the time when I got started Getting a gold star next to completed problems also feels super rewarding Leet Code Another great tool for practicing interview questions Geeks Geeks Fantastic write ups unpacking popular algorithms and core programming concepts Great for refreshers on topics you may not have visited in a while How to debug your codeWhen your code breaks it is important to ask yourself do I understand what I ve written Is this broken because I lack understanding on the topic Odds are you will encounter many MANY errors throughout your journey Experienced programmers still come across various bugs and challenges they need to unpack every day The difference between experienced and unexperienced developers is that the former have effective strategies on how to debug and unpack issues in their code The best way to debug your code especially as a beginner is to print variables to your console or using debug tools built into the IDE you re working in You will gain a better understanding of your code by stepping through it line by line to find the source of your issue Tracing things in your head can also get super tricky and complex Try creating memory diagrams and tracing your variables on a piece of paper as you step through code The more experience you have encountering problems the better equipped you ll be with dealing with them in the future Don t feel disheartened if you are making a lot of mistakes initially ーwe all make mistakes and the learning curve is different for everyone Take each mistake as a learning opportunity ーyou ll be surprised how quickly concepts will come to you later when faced with similar problemsMike from Code Academy highlights some great debugging strategies to practice when getting started Core Features of your LanguageDo a bit of research on the language you want to learn This isn t exactly a step but more something you should be doing and learning by default when learning concepts and practicing problem solving No doubt you will come across various errors and bugs you cannot explain By researching syntactical standards of the language of your choice you will be able to identify these mistakes earlier Maybe try and organise a time to chat with someone who has experience with that language and ask for their tips Another thing to consider is what type of things you are wanting to build This will impact which language will be the most appropriate to learn If you are planning to build iOS apps Swift would be a worthwhile language to consider learning If you were hoping to build websites Javascript would be more appropriate Do your research and ask for advice There are so many languages and tools out there it is important to try and find the one with the most appropriate features and functionality to suit your goal product Extra TipsGet yourself a mentor There is nothing better than having a person to explain your problems to without fear of feeling stupid Their support will be invaluable throughout your journey There is no indignity in asking for help I know I keep repeating myself but mistakes are part of the learning process It does not make you dumb it makes you efficient and resourceful Get yourself some buddies Learning to code is much easier when you are doing it with a group of people Teach someone else Teaching is one of the best ways of learning so once you feel comfortable with topics have a go at teaching someone else what you ve learnt Start good habits early Things like naming your variables and functions meaningful things leaving code comments and using version control Future you will thank you Take notes There are resources all over the place try and collate some notes just for yourself to reference Google is not always your friend Knowing how and what to search is something that comes with experience Instead of searching for a solution search for things to help you better understand your problem so that you can come to your own informed solution Buy a rubber duck I m serious Tell it all your problems and in explaining your problem you might answer your own question This is a bit of a stretch goal but look into testing It is important to trial how your code responds to a variety of different edge cases to ensure it works the way you think it does Lastly and most importantly don t expect to know everything straight away Imposter syndrome is so so common in the computing and engineering community My friend Grace wrote an amazing piece on Imposter Syndrome I d recommend reading It is easy to compare yourself to someone who seems to know everything But try and remind yourself that everyone started somewhere and everyone has been in the position you re in now Its a sucky feeling but if you persist with it and invest the hours you can be just as knowledgable as your friend with the insanely busy Github profile The best and worst thing about programming is that the learning never stops and technology continues to evolve and change Be patient with yourself set up a study plan and practice practice practice	2021-07-10 06:30:46
海外TECH	DEV Community	Understanding the useReducer hook in React	https://dev.to/amarjits/understanding-the-usereducer-hook-in-react-4k12	Understanding the useReducer hook in React What is useReducer useReducer is one of the additional hooks that shipped with React It is an alternative to useState hook and helps in managing complex state logic that involves multiple sub values or when the next state depends on the previous one When combined with useContext and other hooks it can be a good alternative to redux Also useReducer also lets you optimize performance for components that trigger deep updates because you can pass dispatch down instead of callbacks How to use useReducer hook Just like any other hook in React you first need to import it from react import useReducer from react Now just like the useState hook useReducer hook also returns two things in an Array the current state value and a dispatch function to which you can pass an action and invoke later const state dispatch useReducer reducer initialState We use Array destructuring to get the state and dispatch The useReducer takes two parameters The first one is the reducer function and second is the initialState Reducer Function A reducer is generally a function that accepts two parameters and returns a single value A simple example would be the reducer function that we pass to the reduce method in JavaScript let array let reducer total number gt return total number let sum array reduce reducer console log sum The Reducer function that we pass to useReducer is also similar const initialState count The reducer functionfunction countReducer state action switch action type case INCREMENT return count state count case DECREMENT return count state count case RESET return count state count default return count state count The reducer function above takes two parameters first is the current state and second is the action which tells us the operation to be performed Here we have used a Switch Statement and based on the value of action type we perform the corresponding operation on the state Dispatching the actionNow in order to call the Reducer function to perform an operation on the state we use the dispatch function export function Counter const state dispatch useReducer countReducer initialState return lt div gt Count state count lt button onClick gt dispatch type INCREMENT gt lt button gt lt button onClick gt dispatch type DECREMENT gt lt button gt lt button onClick gt dispatch type RESET gt Reset lt button gt lt div gt When we call the dispatch function the current state is automatically passed as the first argument Therefore we only pass the action object which has the type of action we want to perform on the state Conclusion The above example is a basic implementation of useReducer However it can be used to perform complex state logic In that case both our state and action objects will be a collection of many key value pairs In my next blog I will explain on how to use useReducer with useContext for global state management I hope you learnt a lot from this blog Try implementing what you have learnt in your projects If you enjoyed this post I d be very grateful if you d share it Comment below if you have any doubts or questions Thank you for Reading	2021-07-10 06:17:16
ニュース	@日本経済新聞 電子版	海外上場予定の中国企業、ネット登録100万人超は審査へ https://t.co/79FpUJIhWj	https://twitter.com/nikkei/statuses/1413742515199483906	中国企業	2021-07-10 06:10:56
海外ニュース	Japan Times latest articles	India’s poor can’t afford to beat the heat	https://www.japantimes.co.jp/news/2021/07/10/asia-pacific/science-health-asia-pacific/india-heat-waves/	conditioners	2021-07-10 15:54:06
ニュース	BBC News - Home	Covid to get worse before it gets better, doctors warn	https://www.bbc.co.uk/news/uk-57786002	areas	2021-07-10 06:30:05
ニュース	BBC News - Home	Filming with London Grammar and finding inspiration in a shop - the art of the big tournament TV montage	https://www.bbc.co.uk/sport/football/57585918	Filming with London Grammar and finding inspiration in a shop the art of the big tournament TV montageHow music over match action has captured memories of glory and heartbreak for a quarter of a century And now they are more ambitious than ever	2021-07-10 06:14:49
ビジネス	不景気.com	和歌山のスーパー「ゴトウ本店」に破産決定、10年に民事再生 - 不景気.com	https://www.fukeiki.com/2021/07/goto-honten2.html	和歌山県和歌山市	2021-07-10 06:14:54
北海道	北海道新聞	大谷は４打数１安打１打点　マリナーズ戦	https://www.hokkaido-np.co.jp/article/565596/	打点	2021-07-10 15:12:00
北海道	北海道新聞	サッカー男子代表、静岡合宿終了　強化試合に備え大阪へ移動	https://www.hokkaido-np.co.jp/article/565595/	強化試合	2021-07-10 15:07:00
IT	週刊アスキー	来週の注目！セブンに爽やかスイーツ「ラムネとレモンのサマーポンチ」	https://weekly.ascii.jp/elem/000/004/062/4062254/	見た目	2021-07-10 15:30:00