投稿時間:2021-05-30 21:29:48 RSSフィード2021-05-30 21:00 分まとめ(31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	MOONGIFT	satellite-viewer - 30行で作られた衛星トラッカー	http://feedproxy.google.com/~r/moongift/~3/5pRYqWAIxg8/	satelliteviewer行で作られた衛星トラッカー夜空の星を見上げると、ISSが見えることがあります。	2021-05-30 21:00:00
python	Pythonタグが付けられた新着投稿 - Qiita	Python+Optunaで952億点 AHC003を深層学習で攻略	https://qiita.com/toast-uz/items/8449537d47d296333871	そのため、最適化にいくらでも時間を使うことができます。	2021-05-30 20:01:29
js	JavaScriptタグが付けられた新着投稿 - Qiita	雰囲気で書かないESLintの設定ファイル	https://qiita.com/ibara1454/items/be73615df332564e7855	eslintrcjsmoduleexportsextendsplugintypescripteslintrecommendedすでに他の記事とかでも詳しい説明が書かれてあるので、ここでそれぞれの違いを端的にいうとPlugins追加のルールセットを読み込むのに使うpluginsに追加しただけでルールは有効化されないExtendsShareableconfigを適用するのに使う例えばeslintconfiggoogleeslintconfigairbnb実際にShareableconfigはpluginsの設定を含めることができるので、extendsができることはpluginsより多いextendsplugintypescripteslintrecommendedでいうとtypescripteslinteslintpluginにあるrecommendedshareableconfigを適用するという意味です。	2021-05-30 20:26:16
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	DNSプロトコル	https://teratail.com/questions/341240?rss=all	メッセージ	2021-05-30 20:57:40
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	外部IPアドレスとApacheについて	https://teratail.com/questions/341239?rss=all	外部IPアドレスとApacheについてGCPでLinuxサーバーを作成してApacheでwebサイト公開しようと思っています。	2021-05-30 20:26:21
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	pythonでtesseractを使いたいが、パスが通っていないようで想定通りの動作にならない	https://teratail.com/questions/341238?rss=all	pythonでtesseractを使いたいが、パスが通っていないようで想定通りの動作にならない環境pythonnbsptesseractnbspv質問内容以下のスクリプトを実行fromPILimportImageimportpyocrtoolspyocrgetavailabletoolstooltools以下略下記エラーが表示されました。	2021-05-30 20:26:19
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	MW WP Formを使用したサイトへのrecaptcha設定がうまくできない	https://teratail.com/questions/341237?rss=all	MWWPFormを使用したサイトへのrecaptcha設定がうまくできない前提・実現したいことWordPressの自作テーマで制作したサイトに、プラグイン「MWnbspWPnbspForm」でお問い合わせフォームを設置しています。	2021-05-30 20:17:26
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	cssがhtmlに反映されない	https://teratail.com/questions/341236?rss=all	acaebbeffeaddpng	2021-05-30 20:10:38
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	JavaScript　じゃんけんゲームの挙動についてのコード	https://teratail.com/questions/341235?rss=all	この作成を指標にされている方も多かったので【実現したいこと】画像、グーチョキパーのどれかをクリックした際、その挙動に合わせてランダムでグーチョキパーのどれかが出力される。	2021-05-30 20:09:10
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	WSL2でのwindowsとのファイルのやりとりについて	https://teratail.com/questions/341234?rss=all	WSLでのwindowsとのファイルのやりとりについてwslをずっと使っていたのですが、wslでdockerが使えるようになったと聞き、いろいろ遊んでみようかなと思いwslにアップグレード。	2021-05-30 20:07:18
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	Unity アダプティブバナーについて疑問を解消したい。	https://teratail.com/questions/341233?rss=all	Unityアダプティブバナーについて疑問を解消したい。	2021-05-30 20:00:45
AWS	AWSタグが付けられた新着投稿 - Qiita	【試験合格記】AWS 認定 データアナリティクス – 専門知識(DAS-C01)	https://qiita.com/yastani/items/33a38ddf5d27189fa641	【試験合格記】AWS認定データアナリティクス専門知識DASCお疲れさまです。	2021-05-30 20:46:52
技術ブログ	Developers.IO	Control Towerを廃止して東京リージョンで再有効化してみた – 再有効化編	https://dev.classmethod.jp/articles/reenable-control-tower/	controltower	2021-05-30 11:32:16
技術ブログ	Developers.IO	[Report] 더욱 진화하는 AWS 네트워크 보안 #AWSSummit	https://dev.classmethod.jp/articles/aws-summit-korea-network-security/	Report 더욱진화하는AWS 네트워크보안 AWSSummit올해월일일AWS Summit Online Korea 가개최되었었습니다 작년과동일하게온라인으로개최되었으며다양한세션에서깊이있는강연을볼수있었습니다 그중제가보	2021-05-30 11:28:40
海外TECH	Ars Technica	Heads up! The cardiovascular secrets of giraffes	https://arstechnica.com/?p=1768662	blood	2021-05-30 11:45:09
海外TECH	DEV Community	Marketing Your Mobile App, The Steps For Continued Success	https://dev.to/krowser/marketing-your-mobile-app-the-steps-for-continued-success-4bk3	Marketing Your Mobile App The Steps For Continued SuccessHere are some tips for continued success in marketing your app to new users and maintaining your existing userbase Ask Users For FeedbackIf people are using your app constantly it is a sign that have made a connection with the product Give them the opportunity to express their opinions with a popup invitation to leave a review but remember that user experience should not be sacrificed by this tactic Think about when and how you want to ask for a review and make sure it flows well with the user experience so it won t frustrate users The more strategically the popup is placed the better the chances are for a positive review Consider A Burst CampaignA “burst campaign is one of the most popular techniques used by mobile app marketers who want to climb the app store ranks The idea of a burst campaign is to provide a “burst of exposure for your app in which you aggressively purchase paid media exposure over a short period of time usually between and hours depending on budget The goal is to get as many paid installs as possible boosting your ranking All this with the hope of increasing the volume of quality organic installs that should follow when the app is finally ranked high enough to be discovered While you should attract more organic downloads from a successful burst campaign continued paid advertising will maintain steady downloads You need to keep the momentum going Offer A Referral BonusOffering your users a bonus or benefit when they promote your app online is a surefire way to get them to spread the word With a staggering growth rate Dropbox is an excellent example of how powerful referrals can be The company had just registered users in which climbed to a staggering registered users within a mere month period as a result of their referral program This post from Localytics explains how Dropbox used referrals to exponentially increase their user base	2021-05-30 11:51:50
海外TECH	DEV Community	Java vs JavaScript. Key differences and similarities	https://dev.to/coderslang/java-vs-javascript-key-differences-and-similarities-33mo	Java vs JavaScript Key differences and similaritiesThe software programming world has progressed rapidly over time and has a lot of programming languages to offer You might have heard about programming languages Java and JavaScript that sound similar in name and might have got confused about whether they re different names for the same language or are they different Well all your confusion will be clear after this brief yet full of knowledge blog What is Java Java is an OOP Object orientated programming language class based and multi platform programming language having a VM Virtual Machine platform OOP is a programming paradigm based on the concept of objects containing the code and data The Virtual Machine helps you create compiled programs that have the flexibility to run anywhere on any platform Java refers to this concept as Write Once Run Anywhere How to get started with writing code in JavaThere are two simple set up steps you need to follow Download and set up the Java SE Development kitChoose any text editor that you likeI recommended you choose Notepad as a complete beginner since it s the most basic one A different text editor or an IDE will also work just try not to get too fancy as you want to focus on the essentials now Writing a simple code in JavaLet s see how you can simply print a hello world program in Java A Java Program used for printing a simple string character input type e g HelloWorld class HelloWorld public static void main String args System out println Hello World Explanation of the codeThe first line you see starts with the generic comment statement that describes what our program does You can see that it starts with which is a symbolic representation of a single line comment a comment that s restricted to a single line Before we move onto the next line let s explore the curly braces Opening curly brace refers to the opening of the respective class or function whereas ending curly brace refers to where it ends class refers to an object constructor or in simple words a blueprint from which we create objects Each class has a name and in this case our class name is HelloWorld Now coming towards the main method of our program that is public static void main String args Let s break this down into chunks public refers to this method being accessible to anyone from anywhere which means it is globally available static is a keyword that simply defines that this method is static and can t be changed void is also a keyword that refers to a method not returning anything main refers to the name of the Java main method String args refers to the arguments that are being passed to the main method args refers to the name of the string You can name args with any other string name it s just a standard naming used for it System out println Hello World This is the actual output line where our Hello World gets printed Individual statements and variable declarations end with a semi colon Sounds pretty complex for a program that just prints out a single string to the screen That s true and it s one of the reasons why learning JavaScript is a much better choice for beginner devs What is JavaScript JavaScript is a high level scripting programming language that is lightweight and is normally used to make web pages dynamic and interactive It can add dynamic text into HTML and is known for being the browser s language We will discuss its detailed features in its comparison with Java How to get started with writing code in JavaScriptYou just need to have the following things to get started with JavaScript Browser Google Chrome Safari Firefox Internet Explorer Text editor Notepad VS Code Atom How to write your first JavaScript programLet s see how you can write your first hello world program in JavaScript A JavaScript Program used for printing a simple string character input type e g HelloWorld console log Hello World Explanation of the codeThe first line is again the same single line comment as we previously saw for the Java program In JavaScript we simply use the statement console logto print anything on the console an object which provides access to the browser debugging console In short you can view it when You right click on your mouseClick on inspectSelect the console tabView the logged statement in the consoleNow tell me how much easier it is when compared to Java You re right it s not even close Differences between Java and JavaScriptWe can note the following major differences amongst the two languages Programming Paradigm Java strictly follows the object oriented programming paradigm whereas JavaScript follows a multi paradigm that includes object oriented programming procedural and scripting programming language Code Execution Java applications have the flexibility of running on the JVM virtual run time environment for Java whereas JavaScript runs only on Browser specific application specific environments Objects Java objects are purely class based whereas JavaScript objects are prototype based Type Checking Java ensures strong type checking of its variables and functions before compilation which makes the probability run or compile time run quite low However JavaScript is weakly typed the type of the variables is unknown until they get compiled and hence the chances of run or compile time errors increase File Extension Java has a java file extension whereas JavaScript has a js file extension Multithreading Java supports multithreading a process of executing two or more threads simultaneously to maximum utilization of CPU whereas JavaScript doesn t Memory Usage Since Java has a lot going around in it it occupies more space whereas JavaScript occupies less Language Dependency Both languages can work independently on their own and can also pair up with other languages Concurrency Approach Java takes advantage of its multithreading ability and has a thread based approach whereas JavaScript follows an event driven approach Performance Scripting languages are always more efficient than pure programming languages because of their nature of engagement and hence Java is less efficient and slow as compared to JavaScript Similarities between Java and JavaScriptAny of the differences right Let s also explore what do these two have in common Browser Compatibility Both languages can run on a browser Support Both languages have a lot of online support community Syntax and Programming Concepts Though both are two different languages both share the same core programming concepts and some syntax concepts such as Use of programming loops such as for loop while loop Use of conditional statements such as if and else if Use of Math libraries such as Math pow Common shared syntax signs such as code block delimiters semi colon to end code statements Similar Name This one s strange but both Java and JavaScript have Java in common though both languages are completely different ConclusionTo sum it up Java and JavaScript are two different languages that are different A few similarities in them mainly come from the core programming principles but apart from that they both are two different worlds that share a similar name but diverge from each other majorly Get my free e book to prepare for the technical interview or start to Learn Full Stack JavaScript	2021-05-30 11:38:02
海外TECH	DEV Community	Understand React Js Hooks once and for all | part I	https://dev.to/dimer191996/understand-react-js-hooks-once-and-for-all-part-i-86h	Understand React Js Hooks once and for all part IYou ll already know now The React framework includes react hooks Witch are Special hook functions that can be called from within a component function component your react hook return lt gt UI lt gt So By defining functions we may create static or dumb react components And UI components on the other hand are frequently dynamic they may need to change the state of their data respond to lifecycle events and access items from the DOM among other things Reactive State gt function Component const state useState return lt gt UI lt gt Side Effects gt gt Effects gt function Component useEffect gt alert return lt gt UI lt gt Grab gt HTML gt Elements gt function Component const el useRef return lt gt UI lt gt moreBut prior to react version developers were required to write classes to take advantage of certain react features Beforeclass btn extends React Component constructor props super props this state count render return lt p gt this state count lt p gt Afterfunction Btn const state useState count lt p gt state count Now you can still use classes in react But hooks generally provide a more ergonomic way to build components because you can reuse stateful logic without changing your component hierarchy React has built in hooks and you ll understand what every single one of them does by the end of four part series articles In addition you ll learn how to build your own hooks from scratch to extract your own component logic into reusable functions So follow me bruh let learn together let gooooo Before we dive into the react hooks world it s helpful to understand why hooks exist in the first place In the past stateful logic or data that changes within the application was tightly coupled to a class based component That means in order to work with reactive data you needed to create a component that seems reasonable But what it led to in reality was a complex tree of nested components And this is where I have to admit that I used to really dislike and I never learned react because sharing any logic required some frustrating ‍jujitsu like higher order components and render props which are patterns that have you passing components as arguments to other components And that just always felt way more complex to me than patterns you find in other frameworks like Angular Fortunately hooks changed everything by giving you access to lower level features of react outside of the context of a component When you work with hooks you can think of them like low level primitives of the React framework that gives you special abilities that you wouldn t otherwise have in vanilla JavaScript The hooks themselves are functions which always start with the name of use because you re using the super powers of the React framework Now before you start using hooks there s really just one rule you should be aware of And that s to only call them at the top level of a functional component They don t work inside of regular JavaScript functions nested functions loops or anything like that The only exception to this rule is when building your own custom hooks which we ll look at towards the end of these articles Now the question becomes what are these primitives or hooks actually do Let s break them down one by one starting with useState useState is easily the most important and often used hook The purpose of useState is to handle reactive data any data that changes in the application is called state And when the state changes you want react to update the UI So the latest changes are reflected to the end user The hook takes one optional argument which is the default state which we ll go ahead and set to zero the function and returns an array that contains two values you can use within your component The reason they re returned in an array is because we can destructur them with JavaScript to easily assign the values to local variables that we can name whatever we want The first value is the reactive data or state If we then reference it in the UI and its value changes in the future React will automatically rebuild the UI to show the latest value it ll start with a value of zero our default in the hook But how do we then change its value in the future the second element in the array is a setter function For example we might listen to the on click event on the button and when clicked will call the set count function to increment the count by one If we compare this code to a class based component you can see down bellow it s far more complex We need a class to extend a react component than a constructor to initialize the state And also notice how we re required to reference the this keyword all over the place You state in my opinion is a much cleaner solution Now we re ready to tackle the second most important hook useEffect Also happens to be one of the most confusing to me and many other So in order to understand it you first need to understand the component lifecycle Down below is a simplified breakdown of the component lifecycle the component is added to the UI or mounted which can only happen once then reactive data on the component can change or it s updated which can happen multiple times Then finally at some point that component will be removed from the UI or unmounted Now keep these three lifecycle events or side effects in mind as we talk about the use effect hook which allows us to implement logic for all of them from within a single function API UseEffect is a function that takes a function you define as its first argument React will then run your function or a side effect after it is updated the DOM with the current implementation it will run this function anytime stateful data changes on the component That means it ll run once when the component is initialized with a default value then run again each time the state or account is updated In most cases though you ll likely want more fine grained control over that behavior For example imagine we need to fetch data when the component is first initialized then update the state asynchronously after the data has been fetched This previews code in the image would result in an infinite loop Because every time we do the fetch we then update the state which then triggers another fetch and so on forever The way we address this is by adding a second argument to use a fact which is an array of dependencies If you add an empty array it means there are no dependencies which means it will only run once when the component is first initialized But in other cases you might want to rerun the function anytime certain staple data has changed you can do that by adding the state to the dependencies array Now react will track that value and any time it changes it will rerun this function Now one last thing you might want to do with useEffect is run some teardown code when the component is destroyed The way we implement a teardown function is to return a function from our use effect callback React will take the function returned here then call it when the component is destroyed And with that let s move on to our next hook use context This hook allows you to work with react context API which itself is a mechanism that allows you to share or scope values throughout the entire component tree Part Tomorrow	2021-05-30 11:23:52
海外TECH	DEV Community	Buying a new domain is not the way to start your side project	https://dev.to/onerinas/buying-a-new-domain-is-not-the-way-to-start-your-side-project-21e8	Buying a new domain is not the way to start your side projectWhen an idea strikes the very next thing to do is buy a domain I do this a lot and started to slow down recently You take a shower and the idea generator puts an awesome idea in your headIt would be the most incredible idea you have ever come across Rush to laptop see if that perfect domain name is available and boom What did just happen You got a dopamine effect of achieving something Feels like the project is half done right Nope Wrong In reality you did nothing You just paid some few Now you have year to work on the project before it expires Guess what You will probably let it expire or worse renew it for one more year assuming some miracle is gonna happen this year Nope you are wrong again I started keeping aside at least an hour for side projects starting March and obviously I ended up buying few domains nonolist me shipit club myfailedstartups comWanna know the current status of these projects MVP is not ready yet Meanwhile I started thinking about this domain hoarding problem and hit the aha shower moment again Let s build a website to find out how many domains people own For some miraculous reason I didn t buy a domain for this I created a form using typeform and tweeted the link asking how many domains people own oh boy many owned hundreds of domain names ‍Ok now I hit that rush to buy a domain to build a website for this HIGHSCORE domains is born A fun leaderboard to find out who owns more domains I know you are reading this and thinking oh wait how many domains do I own actually HIGHSCORE domains is the project I bought the domain after seeing people are responding to it and might have some potential Guess what this is the only project which is live and not yet another Sign up for early access page Do you face this problem as well ie ended up buying domains and not use them Is there any tricks realization you had recently which helped to overcome this	2021-05-30 11:08:22
Apple	AppleInsider - Frontpage News	Google made it hard for users to keep location data private	https://appleinsider.com/articles/21/05/30/google-made-it-hard-for-users-to-keep-location-data-private?utm_medium=rss	Google made it hard for users to keep location data privateThe aggressive collection of location data by Google and the difficulty for users to manage their privacy settings was known as problems by Google employees lawsuit documents read with employees declaring Apple is eating our lunch Arizona Attorney General Mark Brnovich sued Google in May over the tracking practices of Android with the accusation that Google continued to collect location data from smartphones despite users opting out In unsealed documents it appears that Google made privacy settings for location data harder to find in order to preserve its data collection practices In the documents it is said that Google continued the location data collection even if users turned off numerous location sharing settings throughout apps and Android itself according to Insider Google is also said to have pressured other Android smartphone makers into making the privacy settings difficult to find because users supposedly liked being tracked Read more	2021-05-30 11:49:05
海外科学	NYT > Science	‘On That Edge of Fear’: One Woman’s Struggle With Sickle Cell Pain	https://www.nytimes.com/2021/05/30/us/sickle-cell-black-women.html	On That Edge of Fear One Woman s Struggle With Sickle Cell PainCures for a disease that mostly afflicts Black people seem near but may come too late for Lisa Craig who lives with an agony like knives stabbing her bones	2021-05-30 11:35:00
海外科学	NYT > Science	Nepal Covid Crisis Worsens as Workers Pay the Price	https://www.nytimes.com/2021/05/30/world/asia/nepal-covid19-migrants.html	Nepal Covid Crisis Worsens as Workers Pay the PriceThe Himalayan country is considering declaring a health emergency to help contain a second wave that experts say migrant laborers brought back from India	2021-05-30 11:52:11
ニュース	BBC News - Home	Boris Johnson marries Carrie Symonds at Westminster Cathedral	https://www.bbc.co.uk/news/uk-57296472	ceremony	2021-05-30 11:28:53
ニュース	BBC News - Home	Poots: European Union treating NI as a political plaything	https://www.bbc.co.uk/news/uk-northern-ireland-57299360	peace	2021-05-30 11:42:42
ニュース	BBC News - Home	'Optimism' Glasgow restrictions eased next week	https://www.bbc.co.uk/news/uk-scotland-scotland-politics-57296114	covid	2021-05-30 11:23:06
ニュース	BBC News - Home	France manhunt for armed ex-soldier who fired on police	https://www.bbc.co.uk/news/world-europe-57299850	police	2021-05-30 11:20:00
ニュース	BBC News - Home	Osaka lets racquet do talking to reach French Open second round	https://www.bbc.co.uk/sport/tennis/57290172	Osaka lets racquet do talking to reach French Open second roundJapan s Naomi Osaka puts the controversy over her refusal to speak to the media to one side as she starts the French Open with a straight set win	2021-05-30 11:37:12
ニュース	BBC News - Home	Moto3 rider Dupasquier dies after crash in qualifying	https://www.bbc.co.uk/sport/motorsport/57299713	italy	2021-05-30 11:16:16
LifeHuck	ライフハッカー［日本版］	この学習法、もっと前から知りたかった…｜今週の人気記事TOP5	https://www.lifehacker.jp/2021/05/235703ranking-top5-05230527.html	記事	2021-05-30 21:00:00
北海道	北海道新聞	道内１５人死亡、２８８人感染　２３日ぶり３００人下回る　新型コロナ	https://www.hokkaido-np.co.jp/article/549663/	新型コロナウイルス	2021-05-30 20:11:07
北海道	北海道新聞	田代未来「五輪あると思って」　柔道女子、新井千鶴は「自信」	https://www.hokkaido-np.co.jp/article/549724/	新井千鶴	2021-05-30 20:04:00