投稿時間:2022-07-23 18:15:41 RSSフィード2022-07-23 18:00 分まとめ(22件)

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IT	ITmedia 総合記事一覧	[ITmedia ビジネスオンライン] 22年春アニメ満足度　3位「SPY×FAMILY」、2位「キングダム」、1位は？	https://www.itmedia.co.jp/business/articles/2207/21/news181.html	family	2022-07-23 17:30:00
python	Pythonタグが付けられた新着投稿 - Qiita	シャニマスカレンダーを自動で壁紙に設定する（Windows版）	https://qiita.com/anteip/items/b01cf93d1721bcda8af8	linux	2022-07-23 17:42:38
技術ブログ	Developers.IO	5분만에 읽는 도커 기본 – 도커 데몬, 오케스트레이션, 도커 스웜	https://dev.classmethod.jp/articles/about-docker-reading-in-5-minutes-kr-2/	분만에읽는도커기본 도커데몬 오케스트레이션 도커스웜안녕하세요클래스메소드의수재입니다 저번글에서정리했던도커의개요와명령어에이어서내용을정리해보았습니다 도커데몬도커는Server Client 아키텍쳐컨테이너와이미지를관리하는도	2022-07-23 08:31:41
海外TECH	DEV Community	Where modern front-end frameworks fall short, and how to help it and yourself	https://dev.to/voltra/where-modern-front-end-frameworks-fall-short-and-how-to-help-it-and-yourself-2gd9	Where modern front end frameworks fall short and how to help it and yourselfWhen you need to communicate between pages you have a few options Use your framework s events capabilitiesHave a global store and put something thereUse the query string to add informationAll of these have downsides and might not always work due to how routing and components are handled in your framework You also have the issues of should I change the data before or after changing routes and will my change to the data be seen by my component You have a ContactsCrud widget that contains rows of Contact items You have a ContactPage component which displays the contact s details which include the calls history When on the ContactsCrud if you click on the contact s phone number you want to go to the corresponding ContactPage and execute the code there that starts a new call and displays the appropriate UI How to go about doing that You can t events since the component isn t rendered yet and thus cannot respond to it and if you were to listen the event on mount it d be too late You could use the global store but then you have to write boilerplate every time you need something similar Same goes with the query string but it s even messier My solution Message Passing the Command Design Pattern We don t have access to G ADTs so first we ll help typescript with our messages definitions Here we define both the messages names and their data payload Note that we use if we don t need data just so we can use equality comparisons in our implementations export interface MessagesPayloadMap StartNewCall contactId API Id Test We can use types that extend from this to get god tier autocompletion export type MessageType keyof MessagesPaylodMap Just a shorthand to get the payload for the given message type export type MessagePayload lt M extends MessageType gt MessagesPayloadMap M How our messages actually look like export interface Message lt M extends MessageType gt name M data MessagePayload lt M gt The type of our enum style object that contains all the message factories export type MessageFactoriesEnum M in MessageType payload MessagePayload lt M gt Message lt M gt What we get when querying messages export interface MessageQuery lt M extends MessageType gt message Message lt M gt When querying calling this function will remove the message from the system markAsCompleted gt void Type of the callbacks that process messages export type MessageProcessor lt M extends MessageType gt message Message lt M gt markAsCompleted gt void gt void With those type definitions in mind we can get to the meat of things export const Messages MessageFactoriesEnum StartNewCall data MessagePayload lt StartNewCall gt gt name StartNewCall data Test gt name Test data export interface WorkQueue lt M extends MessageType gt getQuery MessageQuery lt M gt Processor might not be called if the queue is empty query messageProcessor MessageProcessor lt M gt void Processor might not be called if the queue is empty queryLast messageProcessor MessageProcessor lt M gt void Processor might not be called if the queue is empty queryFirst messageProcessor MessageProcessor lt M gt void export interface MessagePassing emit lt M extends MessageType gt messageType M payload MessagePayload lt M gt void dispatch lt M extends MessageType gt message Message lt M gt void on lt M extends MessageType gt messageType M messageProcessor MessageProcessor lt M gt void off lt M extends MessageType gt messageType M messageProcessor MessageProcessor lt M gt void once lt M extends MessageType gt messageType M messageProcessor MessageProcessor lt M gt void queryLast lt M extends MessageType gt messageType M messageProcessor MessageProcessor lt M gt void queryFirst lt M extends MessageType gt messageType M messageProcessor MessageProcessor lt M gt void query lt M extends MessageType gt messageType M messageProcessor MessageProcessor lt M gt void And with this we can get rid of our call headache Before navigating just call mp dispatch Messages StartNewCall contactId On first render of your ContactPage in whichever sub component needs it just call mp queryLast callback The bonus points for this approach are You can have multiple instances querying the messages as long as only one marks them as completed Message queries are independent from actual messages in the queue i e deleting them from the queue won t delete them from a query You can dispatch messages anywhere as long as you have the data to do so	2022-07-23 08:39:05
海外TECH	DEV Community	Check if an element is visible with React hooks	https://dev.to/jmalvarez/check-if-an-element-is-visible-with-react-hooks-27h8	Check if an element is visible with React hooksChecking if an element is visible on the user screen is very easy using the Intersection Observer API This API is supported by all major browsers The Intersection Observer API allows us to detect intersections of an element with another element In our case we are going to observe for interceptions between a React element and the browser viewport We are going to create a custom hook for this to reuse this code where we need it In our custom hook we are going to to use useState to store the intersection status of the element export function useIsVisible const isIntersecting setIntersecting useState false return isIntersecting The hook needs a reference to the React element that we want to observe We are going to use the ref prop to pass the element to the hook export function useIsVisible ref const isIntersecting setIntersecting useState false return isIntersecting Finally we need to create an instance of IntersectionObserver and observe the element The IntersectionObserver constructor accepts a callback function as first argument that is called when the element is intersecting with the viewport We are going to use the useEffect hook to do this to avoid creating new observers on rerenders export function useIsVisible ref const isIntersecting setIntersecting useState false useEffect gt const observer new IntersectionObserver entry gt setIntersecting entry isIntersecting observer observe ref current ref return isIntersecting To improve performance we are going to call IntersectionObserver disconnect to stop watching for changes when the component is unmounted or a new element is passed to the hook export function useIsVisible ref const isIntersecting setIntersecting useState false useEffect gt const observer new IntersectionObserver entry gt setIntersecting entry isIntersecting observer observe ref current return gt observer disconnect ref return isIntersecting Our hook is ready to be used To use it we only need to call it from a React component and pass a reference to the element that we want to check if it s visible or not export function MyComponent const ref useRef const isVisible useIsVisible ref return lt div ref ref gt lt p gt isVisible Visible Not visible lt p gt lt div gt You can see a real usage example of this hook in my website I m using the hook to detect if the user scrolls to the bottom of the page and then load the comments of a blog post You can see the source code of the component here Enter any of the blog posts and scroll to the bottom of the page to see it in action ReferencesIntersection Observer APIIntersectionObserver disconnect	2022-07-23 08:20:39
海外TECH	DEV Community	Understanding Git and Github	https://dev.to/zeeshansafdar48/understanding-git-and-github-c9b	Understanding Git and GithubHi Folks Are you get started with Version Control System Or just want to learn about git Don t worry today we will learn these in details What and Why Git and GithubGit is a version control system And what is version control system exactly let s find out Imagine you have some project and you want to collaborate with other people Or Imagine you add a new feature into your project and now your application breaks and it is not running as it was running before and you think Ohh It would be very great If I could go back in the past in that codebase in which my application was running I wish there is some sort of way Congratulations Your wish came true Thanks to Version Control System that helps us to track and manage changes to our project It helps us to maintain the history of our project like at what particular point of time which person made which change where in the project So you understand the Version Control System and what is relationship between Git and Version Control System Git is a version control system And there are other version control systems as well like SVN TFS etc But we use Git because it is so popular and mostly programmers like you and me use Git And what is Github Github is a platform that allows us to host our Git projects Repositories Think both like an email service You use email service in you day to day life right You send an email via a platform like Gmail Outlook etc These are some platforms that give you an interface to use this service which is send an email Now relate with it Git and Github you use Git with some other platforms like Github Gitlab Bitbucket etc These platforms allow us to host our projects on their website so that other people from around the world can share look contribute our projects You get the idea right And WHY we are using Git and Github as there are so many version control systems like CVS SVN Mercurial Monotone etc and platforms like Gitlab Bitbucket etc because these are so popular in the market Everybody use Git and Github as these are the standards You get the idea right A Basic Project Steps Make a repository in the Github websiteMake a folder into your PCrun command git init into your folderrum command git remote add origin insert https project link here to connect your Github repository with your current local folderrun command git remote v to view your all remote urlsAdd files into your folder make some changes alsorun command git status to view the changesrun command git add file name or git add to add everything in the current folder run command git commit m your message here to Committing the filesrun command git push origin master to push your local changes to remote repositoryCongratulations You create your first Github repoNow I will list down some basic concepts that you use daily in your git work Some Keywords and ConceptsYou never need to become a master of Git and Github before using it You just need a basic understanding of it to get started Mostly in the industry we use some concepts repetitively and these are the followings Repository repo This is your project on the platform or project in which you are working on Branch A branch is a new separate version of the main repository There will be a main or master branch which is the first or default branch in the repository Let say I am working on a project and other developers are also working on the same project If all the others are working in the same branch It will be very difficult to maintain all the work If I am working on a feature called login feature then I will make a new branch let s say feature login and will work on this branch without impacting the other code work Once my work will complete I will merge my feature login branch into the main or master branch Never commit on the main or master branch since it s the oneused by the people to prevent any mishaps Push Let s say I complete my login work mentioned above now I need to push my local code into our repository For that we use push concept I will run the command and push my changes to the branch git push origin feature login feature login is the branch nameNote Before pushing my changes I need to pull the latest code in my current branch Pull Let s say I was working on my login work and also one my friend also working on login functionality and his part is to beautify the UI part He done his changes and push his code into the feature login branch Now If I need his changes I need to pull his changes from the Git And the command I will use is git pull origin feature login feature login is the branch nameMerge Let s say I completed my work of login functionality and now I want to merge with it main code base and accessible to others to use my functionality For this I need to merge my branch with the main branch or master branch Merge Conflict Let s say I was working on a file in my feature login branch and my other friend was also working on the same file We both make a change on the same line when I take pull of his code then Git will on confuse wether my code will be on this line or my friend s code This situation is called conflict We then resolve this issue by telling the Git that whose code will be gone to the repository Basic Git CommandsTo check if git is installed in your PCgitTo initialize an empty Git repository in your foldergit initTo view the changes or the untracked files in theproject that s not been saved yetgit statusStaging the filesgit add file name or git add to stage everything inthe current folder Committing the filesgit commit m your message here To unstage or remove a file from the staging levelgit restore staged file name txtTo view the entire history of the projectgit logRemoving a commit from the history of a projectgit resetinsert commit hash id to which you want to go back to here all the commits or changes before this will go back tothe unstaged area now After you stage a few files but then you want to have aclean codebase or reuse those files later we canstash those changes to go back to the commit beforethey were stagedgit stashBringing back those changes or pop them from thestashgit stash popTo clear the changes or files in your stashgit stash clear How Git worksConnecting your Remote Repository to Local Repositorygit remote add origin insert https project link herePushing local changes to remote repositorygit push origin master we re pushing to the url origin and the branch master To view all your remote urlsgit remote vMove to other branchgit checkout branch nameMerging your branch to main of projectgit merge branch nameIf you are still feel stuck or confuse don t worry Follow the video that will clear your concepts Complete Git and GitHub Tutorial Kunal KushwahaFollow this very useful PDF for all the commands that you need Git Cheat Sheet Education	2022-07-23 08:04:08
海外科学	BBC News - Science & Environment	Giant Lovell radio telescope at Jodrell Bank to become space light show	https://www.bbc.co.uk/news/science-environment-62269520?at_medium=RSS&at_campaign=KARANGA	sound	2022-07-23 08:24:38
海外ニュース	Japan Times latest articles	COVID-19 tracker: Tokyo cases remain above 30,000 for third straight day	https://www.japantimes.co.jp/news/2022/07/23/national/japan-coronavirus-tracker-july-23/	COVID tracker Tokyo cases remain above for third straight dayThe seven day average of new infections in the capital rose to the metropolitan government said Seven deaths were reported	2022-07-23 17:04:15
ニュース	BBC News - Home	Giant Lovell radio telescope at Jodrell Bank to become space light show	https://www.bbc.co.uk/news/science-environment-62269520?at_medium=RSS&at_campaign=KARANGA	sound	2022-07-23 08:24:38
ニュース	BBC News - Home	WWE chief McMahon retires amid sexual misconduct allegations	https://www.bbc.co.uk/news/world-us-canada-62276389?at_medium=RSS&at_campaign=KARANGA	allegations	2022-07-23 08:37:11
ニュース	BBC News - Home	Gianluca Scamacca: West Ham agree £30.5m deal for Sassuolo and Italy striker	https://www.bbc.co.uk/sport/football/62264843?at_medium=RSS&at_campaign=KARANGA	gianluca	2022-07-23 08:50:15
ビジネス	不景気.com	長崎の洋菓子店「お菓子の店アリタ」が破産申請へ、負債3億円 - 不景気com	https://www.fukeiki.com/2022/07/patisserie-arita.html	有限会社	2022-07-23 08:50:17
ビジネス	不景気.com	山梨の雛人形製造「雛屋豊玉」「市川豊玉」が破産、負債4億円 - 不景気com	https://www.fukeiki.com/2022/07/hinaya-hougoku.html	山梨県韮崎市	2022-07-23 08:15:58
北海道	北海道新聞	北海道内４６３６人感染、２日連続で最多更新　死者３人　新型コロナ	https://www.hokkaido-np.co.jp/article/709321/	北海道内	2022-07-23 17:20:30
北海道	北海道新聞	カズワン、乗客負傷も運航継続　昨年５月の事故発生時　道運輸局の監査書類で判明	https://www.hokkaido-np.co.jp/article/709348/	知床半島	2022-07-23 17:38:07
北海道	北海道新聞	中国恒大、ＣＥＯが辞任　子会社の財務問題で解任	https://www.hokkaido-np.co.jp/article/709340/	経営危機	2022-07-23 17:16:37
北海道	北海道新聞	静岡で最多６４２５人感染　２人死亡、１人取り下げ	https://www.hokkaido-np.co.jp/article/709347/	取り下げ	2022-07-23 17:31:00
北海道	北海道新聞	千葉で最多９５９１人感染　２人死亡、３人取り下げ	https://www.hokkaido-np.co.jp/article/709346/	取り下げ	2022-07-23 17:27:00
北海道	北海道新聞	首相、非核国会合初出席へ　８月、外相級に異例対応	https://www.hokkaido-np.co.jp/article/709344/	岸田文雄	2022-07-23 17:20:00
北海道	北海道新聞	１日の戦死者、３０人に減少　ウクライナ軍、大統領が指摘	https://www.hokkaido-np.co.jp/article/709343/	減少	2022-07-23 17:15:00
北海道	北海道新聞	八王子スーパー射殺から２７年　同級生ら母校で追悼礼拝	https://www.hokkaido-np.co.jp/article/709330/	東京都八王子市	2022-07-23 17:00:46
IT	週刊アスキー	「海苔うまシーフード」が帰ってきた！ SNSで話題のカップヌードルアレンジを再現	https://weekly.ascii.jp/elem/000/004/099/4099129/	海苔の佃煮	2022-07-23 17:30:00