投稿時間:2021-04-18 18:24:35 RSSフィード2021-04-18 18:00 分まとめ(29件)

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python	Pythonタグが付けられた新着投稿 - Qiita	Flask-Loginの練習	https://qiita.com/k8uwall/items/d42ede10e3915de99d46		2021-04-18 17:43:34
python	Pythonタグが付けられた新着投稿 - Qiita	[Django / python] form.Form を使ったフォームからの値をまとめて代入したいですよね？	https://qiita.com/siruku6/items/5b1378eca8cfd7353143	そこで試行錯誤してみたら、そこそこらくちんになったので共有ワどういうことこういうことですrootdirectoryappnameviewspydefnewbookrequest本の新規登録formBookFormrequestPOSTorNoneifformisvalidbookBookbooktitleformcleaneddatatitlebookauthorformcleaneddataauthorbookpublisherformcleaneddatapublisherもう嫌になったなんで個ずつ代入せなあかんのじゃパラメータがももあったらどうすんじゃい解決策手抜きもーどω⌒ソースコードrootdirectoryappnameviewspydefnewbookrequest本の新規登録formBookFormrequestPOSTorNoneifformisvalid行でまとめて代入きもちいいbookBookformcleaneddataこれでいけました。	2021-04-18 17:10:11
js	JavaScriptタグが付けられた新着投稿 - Qiita	JavaScriptメソッドで出来ること	https://qiita.com/nagamu1000/items/e8435873cf4159f51151	JavaScriptメソッドで出来ることはじめに初学者の私が、アクティブラーニング兼備忘録の為にJavaScriptのメソッドをまとめる記事です。	2021-04-18 17:00:50
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	tableの上端を角丸にする方法	https://teratail.com/questions/333895?rss=all	tableの上端を角丸にする方法下記画像のようにtableを上端だけ角丸に実装をしたいのですがどのようにCSSを加えるといいのかわからず困っています。	2021-04-18 17:49:23
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	2Dシューティングゲームの敵の行動プログラムを、複数のスクリプトのコルーチンを用いてまとめたい。	https://teratail.com/questions/333894?rss=all	Dシューティングゲームの敵の行動プログラムを、複数のスクリプトのコルーチンを用いてまとめたい。	2021-04-18 17:47:11
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	Selenium URLを順番にクリックしたい	https://teratail.com/questions/333893?rss=all	SeleniumURLを順番にクリックしたい取得したURLをドライブ上で順番にクリックしていくプログラムが作りたく色々試してみたのですがうまくいきません。	2021-04-18 17:46:42
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	HTML上で「スコアが０になった時、画像を表示」する処理をしたい	https://teratail.com/questions/333892?rss=all	HTML上で「スコアがになった時、画像を表示」する処理をしたい前提・実現したいこと描画と画像が混在するゲーム画面があり、スコアがになったタイミングで、このゲーム画面の描画等の上に重なるようにして終了を伝える画像を表示したい。	2021-04-18 17:38:25
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	admobのリワード広告における報酬について。	https://teratail.com/questions/333891?rss=all	admobのリワード広告における報酬について。	2021-04-18 17:36:59
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	Laravelのjwt-authで認証成功時にフロントエンドが白画面になる	https://teratail.com/questions/333890?rss=all	Laravelのjwtauthで認証成功時にフロントエンドが白画面になる現在LaravelとVuejsのSPA開発でシステムを組んでいます。	2021-04-18 17:28:45
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	androidのvisualizerについて	https://teratail.com/questions/333889?rss=all	androidのvisualizerについてwav音源のデータを波形に直すためにandroidのvisualizerを使いたく、サンプルコード等から勉強して理解しようとしたのですが、しっかりと乗せてくれているサイトが見つからずどのようにすればいいのかわからなくなりました。	2021-04-18 17:28:03
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	PHPUnitTestのテストデータ確認方法について	https://teratail.com/questions/333888?rss=all	mysql	2021-04-18 17:10:22
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	SyntaxError	https://teratail.com/questions/333887?rss=all	SyntaxError前提・実現したいこと動画を見ながらpythonでRPGを作っていました。	2021-04-18 17:05:01
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	WPのプラグイン『WP-SCSS』で出力時に.5emが0.5emとなる問題を解決したい	https://teratail.com/questions/333886?rss=all	前提・実現したいことWPのプラグイン『WPSCSS』で出力時にemがemとなる問題を解決したい発生している問題・エラーメッセージWPSCSSを使い、scssファイルからcssにコンパイルをしています。	2021-04-18 17:04:02
AWS	AWSタグが付けられた新着投稿 - Qiita	React チュートリアル	https://qiita.com/Genki_Chonmage/items/f57b4586c8c855d7f3a0	Reactのチュートリアルでアプリケーションを作成し、AWSでデプロイし公開できるところまで。	2021-04-18 17:50:32
技術ブログ	Developers.IO	[お知らせ]Amazon Athena Engine Version 1が近い将来に非推奨になります	https://dev.classmethod.jp/articles/20210418-amazon-athena-engine-version2-deprecated/	athena	2021-04-18 08:28:11
海外TECH	DEV Community	C++ vs Python	https://dev.to/saiansulsblog/c-vs-python-47ki	C vs PythonHello Guys Welcome back to another post of Sai Ansul s Blog In this blog we are gonna find which programming language is better So let s start Firstly let us know what is programming Programming is the way we can make the computer perform various tasks What is programming language It is a formal language to perform various tasks there are several protocols and algorithms to be followed Let us know the types of programming languages Procedural Programming Language Functional Programming Language Object oriented Programming Language Scripting Programming Language Logic Programming Language Some names of programming language are C Language C Language Pascal Language Python Language Java Language Perl LanguageLisp LanguageSo now lets us know something about both the programming language C It is programming language used for building high level programmed applications developed by Bjarne Stroustrup as an extension of the C programming language or C with Classes C supports different ways of programming like object oriented functional procedural and more PythonIt is a programming language it s object oriented it s a interpreter language which is easy to learn This can be used for software and web development also for data science Now let us know some of the of the difference between two programming language C Pyhton It is statically typed It is dynamically typed No scope as an backend developer Good option for backend developer Need to write a lot of lines of code Less lines of codes required It is pre compiled It uses interpreter Looks messy but manageable as compared to python It is easy since its object oriented and simpler to use C is faster than python Python is slower because it uses interpreter it also determines on the type of data while running It doesn t support garbage collection It supports garbage collection TIOBE rating is TIOBE rating is Variables are limited within loops Variables are also accessible outside loops Rapid Prototyping not possible because of larger code size Rapid Prototyping is possible because of the small size of the code Not easy in contrast to Python because of its complex syntax Program is easier to type These were some of the differences between these programming language Now let us know some advantage amp disadvantages of Python amp C Advantages of PythonIts portableIts free and open sourcedEasy to use and fast to develop languageIt has all the libraries that each requires Disadvantage of PythonSpeed is slower than C There are sometimes runtime errorsIts not a good choice for mobile developmentIts used for functional programmingIts not a good choice for memory intensive tasks Advantages of C It is also portableObject orientedLow level ManipulationMemory Management Disadvantages of C It does not have any security featureIt can t support garbage collectionDifficult to debug while used for web applicationsIt becomes complex while in a very big and high level programmingSo since we have covered what is python amp C its difference and its advantages and disadvantages Now lets proceed towards the conclusionSo if you have read this you might have a clear idea about which programming language is better and which one you should use Python is better beginners because of its easy code and syntax its a good for who want to choose their career in backend web development Python is also leading language for data analytics and machine learning But if you want to develop applications or software then C is a good programming language to go for Now at the end you have to decide for what purpose which one you have to choose	2021-04-18 08:31:05
海外TECH	DEV Community	Solution: Remove Nth Node From End of List	https://dev.to/seanpgallivan/solution-remove-nth-node-from-end-of-list-4njl	Solution Remove Nth Node From End of ListThis is part of a series of Leetcode solution explanations index If you liked this solution or found it useful please like this post and or upvote my solution post on Leetcode s forums Leetcode Problem Medium Remove Nth Node From End of List Description Jump to Solution Idea Code JavaScript Python Java C Given the head of a linked list remove the nth node from the end of the list and return its head Follow up Could you do this in one pass Examples Example Input head n Output Visual Example Input head n Output Example Input head n Output Constraints The number of nodes in the list is sz lt sz lt lt Node val lt lt n lt sz Idea Jump to Problem Description Code JavaScript Python Java C With a singly linked list the only way to find the end of the list and thus the n th node from the end is to actually iterate all the way to the end The challenge here is attemping to find the solution in only one pass A naive approach here might be to store pointers to each node in an array allowing us to calculate the n th from the end once we reach the end but that would take O M extra space where M is the length of the linked list A slightly less naive approach would be to only store only the last n node pointers in the array This could be achieved by overwriting the elements of the storage array in circlular fashion as we iterate through the list This would lower the space complexity to O N In order to solve this problem in only one pass and O extra space however we would need to find a way to both reach the end of the list with one pointer and also reach the n th node from the end simultaneously with a second pointer To do that we can simply stagger our two pointers by n nodes by giving the first pointer fast a head start before starting the second pointer slow Doing this will cause slow to reach the n th node from the end at the same time that fast reaches the end Since we will need access to the node before the target node in order to remove the target node we can use fast next null as our exit condition rather than fast null so that we stop one node earlier This will unfortunately cause a problem when n is the same as the length of the list which would make the first node the target node and thus make it impossible to find the node before the target node If that s the case however we can just return head next without needing to stitch together the two sides of the target node Otherwise once we succesfully find the node before the target we can then stitch it together with the node after the target and then return head Implementation There are only minor differences between the code of all four languages Javascript Code Jump to Problem Description Solution Idea var removeNthFromEnd function head n let fast head slow head for let i i lt n i fast fast next if fast return head next while fast next fast fast next slow slow next slow next slow next next return head Python Code Jump to Problem Description Solution Idea class Solution def removeNthFromEnd self head ListNode n int gt ListNode fast slow head head for in range n fast fast next if not fast return head next while fast next fast slow fast next slow next slow next slow next next return head Java Code Jump to Problem Description Solution Idea class Solution public ListNode removeNthFromEnd ListNode head int n ListNode fast head slow head for int i i lt n i fast fast next if fast null return head next while fast next null fast fast next slow slow next slow next slow next next return head C Code Jump to Problem Description Solution Idea class Solution public ListNode removeNthFromEnd ListNode head int n ListNode fast head slow head for int i i lt n i fast fast gt next if fast return head gt next while fast gt next fast fast gt next slow slow gt next slow gt next slow gt next gt next return head	2021-04-18 08:12:33
海外TECH	DEV Community	Introduction to Microservice Architecture	https://dev.to/tamerlang/introduction-to-microservice-architecture-1p8h	Introduction to Microservice ArchitectureIt can be very intimidating designing a backend system There are many different variations and so many buzz words such as MonolithMacroservicesMiniservicesMicroservicesServerlessAs it turns out the process of choosing an architecture is a lot simpler You just gotta know the pros and cons of each one and pick the one that suits your project needs But first you need to have a solid understanding of each architectural pattern so this is why in this post we cover one of the most popular architectural patterns the microservice You ll learn Basics of software architecturePros and cons of the monolith architecturePros and cons of microservicesBasics of design pattern TerminologyBefore we move on to the gritty details of microservices we first have to cover the basic terminology What is software architecture Architecture in a nutshell is the decisions that you wish you had made early on in the project Architecture is the skeleton of the project It is the hard decisions you make early on that determine the foundation of the project It s this foundation that greatly influences the quality of code ease of development and deployment maintainability and evolvability Examples of architecture Client ServerMonolithModel View Controller MVC Event Driven What is monolith architecture You might be thinking isn t this post about microservices why is this idiot talking about monolith The reason is that to understand what problems does the microservice architecture fix we gotta first understand the problems that the old traditional monolithic architecture give Okay moving on The word monolith means composed all in one place in software terms it means having a single application made up of different components combined into a single program from a single platform Components may include Authorization responsible for authorizing the userPresentation responsible for handling HTTP requests and responding back with HTML or JSON XML if it s an API Business logic the business logic of the applicationDatabase layer responsible for communicating with the databaseApplication integration responsible for integrating with other services using REST API or messaging or any other data source Notification module responsible for sending notifications For years monolithic applications have been industry default because it s simple All code is in one place it s simple to test and deploy But as application size grows there are some major drawbacks that get introduced What are the problems with monolithic architecture Maintenance as the codebase increases it becomes harder to make changes The large code base intimidates developers especially new ones Which will lead to decreased productivity Overloaded IDE the larger the code base the slower the IDE and the less productive developers will be Startup time the larger the application the more time it will take to launch the application in turn will lead to decreased productivity Deployment in order to update one component your gonna have to redeploy the whole application This might interrupt background tasks and possibly cause problems Scaling monolithic applications are hard to scale because different modules may have different resource requirements Scaling to development teams as an application gets bigger it would be advisable to separate developers into teams per module For example a team for the payments module and another team for the products module In a monolithic architecture everything is coupled together making it hard for teams to work independently This forces the teams to coordinate their development and deployments In turn making it difficult to make changes and update production Tech stack Monolithic architecture forces you to stick to one technology sometimes even a specific version of that technology It s very hard to adopt new technology due to the fact that changing the language or framework will affect the whole application What is a microservice The microservice architecture is an approach to software development in which a large application is made up of a suite of modular services i e loosely coupled modules components A good analogy would be legos where each set of blocks corresponds to a component Additionally a group of connected components would create a full fledged application Each module service has a single business goal and uses simple interfaces to communicate with other services Another feature of services is that unlike the monolith application where you share a single database microservices follow the approach of database per service This ensures loose coupling and the service can use the database that best suits its needs Pros of MicroservicesEnable the continuous development and deployment of large complex applications Improves maintainability each service is small so it s much easier to make changes Better testability services are smaller and faster to test Better deployability each service can be deployed independentlyEnables teams to be independent teams can get full responsibility for a single or set of services Each team can develop test deploy and scale their services independently of all other teams Each microservice is relatively small Less complexity easier to understandSmaller code base making the IDE fast The application starts faster which makes developers much more productive and speeds up deployments Improved fault isolation If one service faces issues then only that service will be affected The other services will continue normally Unlike monolithic architecture one misbehaving component can bring down the entire system Better evolvability when developing a new service you can use a new technology stack Similarly when making major changes to an existing service you can rewrite the whole service in a new stack Cons of MicroservicesDevelopers must deal with the additional complexity of creating a distributed system Developers must implement the inter service communication mechanism and deal with partial failureImplementing requests that span multiple services is more difficult Testing the interactions between services is more difficult Implementing requests that span multiple services requires careful coordination between the teams Developer tools IDEs are oriented toward building monolithic applications and don t provide explicit support for developing distributed applications Deployment complexity in production there is additional complexity in deploying and managing a system compromised of many different services Increased memory consumption The microservice architecture replaces N monolithic application instances with NxM services instances If each service runs in its own JVM or equivalent which is usually necessary to isolate the instances then there is the overhead of M times as many JVM runtimes Moreover if each service runs on its own VM e g EC instance as is the case at Netflix the overhead is even higher Microservice Design PatternsYou cannot use the microservice architecture alone there are many different design patterns that solve the same problems in different ways and it s your job as the developer to choose which one best fits your project An example may be How to decompose the application into services Here you can use different design patterns Decompose by business capability and define services corresponding to business capabilities Decompose by domain driven design subdomain Decompose by verb or use case and define services that are responsible for particular actions e g a Shipping Service that s responsible for shipping complete orders Decompose by nouns or resources by defining a service that is responsible for all operations on entities resources of a given type e g an Account Service that is responsible for managing user accounts What are patterns Design patterns are typical solutions to commonly occurring problems in software design They are like pre made blueprints that you can customize to solve a recurring design problem in your code You can t just find and copy a pattern Patterns do not provide any code but provide a general concept for solving a specific problem What are the types of microservices patterns Microservices have lots of patterns to make it easier we have separated the patterns into three categories based on their relationships to one another Predecessor a predecessor pattern is a pattern that motivates the need for this pattern For example the Microservice Architecture pattern is the predecessor to the rest of the patterns in the pattern language except the monolithic architecture pattern Successor a pattern that solves an issue that is introduced by this pattern For example if you apply the Microservice Architecture pattern you must then apply numerous successor patterns including service discovery patterns and the Circuit Breaker pattern Alternative a pattern that provides an alternative solution to this pattern For example the Monolithic Architecture pattern and the Microservice Architecture pattern are alternative ways of architecting an application You pick one or the other These relationships provide valuable guidance when using a pattern language Applying a pattern creates issues that you must then address by applying successor patterns The selection of patterns continuously recursively until you reach patterns with no successor If two or more patterns are alternatives then you must typically pick just one In many ways this is similar to traversing a graph ConclusionCongratulations you now know enough to go forth in your journey of being a software architect The journey doesn t stop here make sure to check out microservices io for more details on microservices	2021-04-18 08:01:00
海外科学	NYT > Science	How the Tiny Kingdom of Bhutan Out-Vaccinated Most of the World	https://www.nytimes.com/2021/04/18/world/asia/bhutan-vaccines-covid.html	How the Tiny Kingdom of Bhutan Out Vaccinated Most of the WorldThe Himalayan nation has given more than percent of its people a shot Some villages were reached by helicopter and health workers hiked through ice and snow	2021-04-18 08:08:38
海外ニュース	Japan Times latest articles	Boutique design hotels for the discerning staycationer	https://www.japantimes.co.jp/life/2021/04/18/style/boutique-design-hotels-staycation/	ordinary	2021-04-18 19:00:02
海外ニュース	Japan Times latest articles	To achieve long-term happiness, try taking these daily steps	https://www.japantimes.co.jp/life/2021/04/18/lifestyle/long-term-happiness-daily-steps/	happiness	2021-04-18 18:55:19
海外ニュース	Japan Times latest articles	‘At the End of the Matinee’: Love and longing in the recent past strike a chord	https://www.japantimes.co.jp/culture/2021/04/18/books/at-the-end-of-the-matinee-keiichiro-hirano/	At the End of the Matinee Love and longing in the recent past strike a chordIn his novel Keiichiro Hirano provides a detailed view of politics culture and economics at the start of the st century alongside a story about	2021-04-18 19:00:48
ニュース	BBC News - Home	Salisbury poisoning suspects 'linked to Czech blast'	https://www.bbc.co.uk/news/uk-56790053	diplomats	2021-04-18 08:52:25
ニュース	BBC News - Home	Covid: Gig with no social distancing to be part of government pilot	https://www.bbc.co.uk/news/uk-56789454	beforehand	2021-04-18 08:56:25
ニュース	BBC News - Home	China and US pledge climate change commitment	https://www.bbc.co.uk/news/world-asia-china-56790077	shanghai	2021-04-18 08:16:01
ニュース	BBC News - Home	Lyra McKee's sister Nichola Corner says her 'heart is still broken'	https://www.bbc.co.uk/news/uk-northern-ireland-foyle-west-56791426	mckee	2021-04-18 08:05:21
北海道	北海道新聞	早慶レガッタ、慶大が僅差で勝利　ボートのエイト、１６年大会以来	https://www.hokkaido-np.co.jp/article/534591/	春の風物詩	2021-04-18 17:17:00
北海道	北海道新聞	被災地・陸前高田の基盤整う　市庁舎完成、町の活性化課題	https://www.hokkaido-np.co.jp/article/534577/	東日本大震災	2021-04-18 17:02:43
北海道	北海道新聞	日１―４楽（１８日）　日ハム、打線つながらず	https://www.hokkaido-np.co.jp/article/534588/	首位	2021-04-18 17:02:00