投稿時間:2021-04-23 02:38:08 RSSフィード2021-04-23 02:00 分まとめ(52件)

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AWS	AWS	Using Amazon EMR Studio to Launch EMR clusters in AWS Service Catalog	https://www.youtube.com/watch?v=9w_TXTdFLpo	Using Amazon EMR Studio to Launch EMR clusters in AWS Service CatalogIn this video you ll see how to configure an EMR cluster in AWS Service Catalog and launch it using Amazon EMR Studio With this integration you can deploy predefined templates to enforce best practices simplify the EMR deployment process and improve budget adherence and cost control For more information on this topic please visit the resources below Amazon EMR Studio Amazon EMR Studio Preview Subscribe More AWS videos More AWS events videos AWS AWSDemo AmazonEMRStudio	2021-04-22 16:45:32
python	Pythonタグが付けられた新着投稿 - Qiita	【初心者向け】Pythonコードの読み方	https://qiita.com/takahashikaito94/items/4c6a8d920fb5275eabaa	要はコードとエラー文を読み飛ばさずに読めるかこの観点が重要そうです。	2021-04-23 01:19:10
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	wordpress 記事のカテゴリーごとにナンバリングをつける方法	https://teratail.com/questions/334704?rss=all	wordpress記事のカテゴリーごとにナンバリングをつける方法前提・実現したいことカスタム投稿のカテゴリーごとにナンバーを自動でつけたいのですが方法がわからず困っております。	2021-04-23 01:25:15
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	font-weight:medium;のみ、なぜか無効になるので解決したいです。	https://teratail.com/questions/334703?rss=all	fontweightmediumのみ、なぜか無効になるので解決したいです。	2021-04-23 01:16:05
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	Visual Studio codeでビルドにエラーが出る（終了コード:-1）	https://teratail.com/questions/334702?rss=all	下記のサイトを頼りに、VisualnbspStudionbspCodeの環境構築を行っているのですが、最終のビルドでエラーが出ます。	2021-04-23 01:05:52
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	rails s コマンドを入力してhttp://localhost:3000にアクセスしたらTypeErrorが出たため、ハッシュから文字列に書き換える方法を教えてください。	https://teratail.com/questions/334701?rss=all	使用機器macOSnbspBignbspSurnbspバージョンです。	2021-04-23 01:05:11
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	Google Add-OnのUI実装をHTMLで行いたい	https://teratail.com/questions/334700?rss=all	GoogleAddOnのUI実装をHTMLで行いたい現在GmailnbspAddOnを実装しています。	2021-04-23 01:00:48
Ruby	Railsタグが付けられた新着投稿 - Qiita	ifって大事	https://qiita.com/takuo_maeda/items/ca265a4784dc4c5a8cc9	ifって大事ChatappというアプリのテキストにてappcontrollersroomscontrollerrbdefdestroyroomRoomfindparamsidroomdestroyredirecttorootpathend削除に失敗してもルートパスに飛ばされるfurimaというアプリテキストにてappcontrollersitemscontrollerrbdefdestroyifitemdestroyredirecttorootpathendend削除に成功すればルートパスに飛ばされる。	2021-04-23 01:34:31
Ruby	Railsタグが付けられた新着投稿 - Qiita	MVの『超』「超」基本	https://qiita.com/takuo_maeda/items/b90cad77a8e1c3ae2386	C と は コントローラー クラス に は アクション の ため の メソッド が い て あり ます 。	2021-04-23 01:21:55
海外TECH	Ars Technica	Analyst: Nintendo says Microsoft’s xCloud streaming isn’t coming to Switch	https://arstechnica.com/?p=1759373	switch	2021-04-22 16:25:49
海外TECH	DEV Community	GitHub Externship ❤️ Hoppscotch	https://dev.to/liyasthomas/github-externship-hoppscotch-m95	GitHub Externship ️Hoppscotch Join GitHub Externship HoppscotchIndia is home to one of the largest communities of student developers in the world In we saw the number of students participating in the GitHub Campus program increase by percent over students signed up to GitHub Student Developer Pack and campus offering was adopted by more than higher education institutions in India This growth is great to see as the student ecosystem is incredibly important to the continued growth and pace of innovation in India However students do not have enough opportunities to get mentorship that can make them real world ready and enhance their job prospects We are super excited to be a Partner Organization of GitHub Externship and look forward to supporting all interested students to participate and contribute to our open source projects To support the growing community of student developers and to address their needs GitHub is launching GitHub Externships This builds on GitHub Campus offering by providing students a unique opportunity to engage with companies in India via fellowship programs and build the right skills future developers need to succeed in an enterprise environment The program really connects the dots between open source the next generation of software developers and successful companies The GitHub Externship is a days fellowship program about learning preparing students to be market ready strengthening industry academia relations and giving practical experience to students This also aims to provide innovative solutions to the partner organizations on their existing challenges organizations could potentially identify real talent that can be employed by the organizations at later stages EligibilityThird year students that are part of higher education institutions in India have signed up for the GitHub Campus Program For more details please go to the program page here Need Help If you have any questions or queries please contact us via Telegram Discord or send an email to us at support hoppscotch io Join GitHub Externship Hoppscotch	2021-04-22 16:46:22
海外TECH	DEV Community	Collaborative Filtering in MySQL: A Tutorial	https://dev.to/arctype/collaborative-filtering-in-mysql-a-tutorial-5f49	Collaborative Filtering in MySQL A TutorialBeing able to view products and pages liked by other users is not only an interesting exercise but also a nearly ubiquitous marketing toolーand it can be easily implemented with MySQL What is Collaborative Filtering Nearly every dynamic website uses collaborative filtering to maximize users exposure to a wider range of potentially relevant content You ve seen it on Amazon and you ve certainly seen it on Facebook In fact collaborative filtering is arguably part of the fabric of modern social networking e commerce and news websitesーeven when you can t see it Of course especially on large sites most of this filtering is now done using AI but the fundamental framework has never changed This article will walk you through a basic implementation of collaborative filtering using MySQL Getting Started Database Creation and Data EntryFor this tutorial we will consider a scenario in which you want to discover new products in an online store by analyzing records of products liked by specific users For example if you were to visit the page of an interesting product you might also want to explore the other products liked by users who liked this specific productーjust in case your tastes happen to match In this case MySQL is an effective database solution so we ll begin by creating a database called mydb CREATE SCHEMA IF NOT EXISTS mydb Inside mydb we can now create a table product where products with likes can be stored CREATE TABLE IF NOT EXISTS mydb product id INT NOT NULL AUTO INCREMENT name product VARCHAR NOT NULL price product DECIMAL NOT NULL amount product INT NOT NULL PRIMARY KEY id ENGINE InnoDB We also need to create a table for users In this case we ll call it user and give it three columns id user name and user pass CREATE TABLE IF NOT EXISTS mydb user id INT NOT NULL user address VARCHAR NOT NULL user pass VARCHAR NOT NULL PRIMARY KEY id ENGINE InnoDB Of course in most cases a table for user information may contain tensーor even hundredsーof columns to store all kinds of data about a user but for the sake of simplicity we ll keep it to just three for now Finally we will need a table that keeps track of who likes what We ll call it likes and give it two columnsーstoring both the user s id and the product id for the liked item CREATE TABLE IF NOT EXISTS mydb likes user id INT NOT NULL product id INT NOT NULL INDEX fk likes user idx user id ASC INDEX fk likes product idx product id ASC CONSTRAINT fk likes user FOREIGN KEY user id REFERENCES mydb user id ON DELETE NO ACTION ON UPDATE NO ACTION CONSTRAINT fk likes product FOREIGN KEY product id REFERENCES mydb product id ON DELETE NO ACTION ON UPDATE NO ACTION ENGINE InnoDB As you can see each column gets its own index and in order to ensure that invalid data doesn t get added to the table thereby breaking the relationship between likes and our other tables we have also added foreign key constraints for both columns This way any new like is checked to make sure that user id matches an id in userproduct id matches an id in productNow let s fill in the table with products For this example we ll use cosmetic products INSERT INTO product id name product price product amount product VALUES Shampoo perfumes Clear Eyeshadow Makeup Face Lotion Gigi Lipstick Set LP Highlighter NAC Powder Pow Toner Tonn Blush Gigi Highlighter Lily Shampoo Lux Lipstick Gigi This is what your product table should look like in Arctype Now we can add some sample users to our user table INSERT INTO mydb user id user address user pass VALUES ala l e xa gmail com ujsaduif ni c k gmail com fjkshfei a u r ora gmail com GFGuur vic t oria gmail com geuir gmail com jfieYt It should look something like this And finally we can fill in the likes table with some sample like data INSERT INTO mydb likes user id product id VALUES Because one user can like more than one product this table can ultimately have thousands of rows but for our scenario we ll stop at Two Methods for Implementing Collaborative FilteringWith all of this data now stored in our tables we are now ready for collaborative filtering In this post we will achieve this using two different methods Method SubqueriesFor this first method our main query selects all rows from likes where the liked product is NOT our specified base product Our subquery then selects all users from likes who DID like our base product in order to create a list against which we can check all user ids in our main query SELECT product name product AS Product COUNT likes user id AS Also liked by users FROM likes JOIN product ON product id likes product idWHERE likes user id IN SELECT user id FROM likes WHERE product id insert base product id here AND likes product id lt gt insert base product id hereGROUP BY ORDER BY DESC As you can see we actually did also use JOIN here but only in order to display the product namesーrather than just their IDsーin the result Method JOINFor this method we first select all rows from likes where product id matches our specified product ID as a list called did like Then we ll use JOIN to add all rows from likes to did like our joined list is assigned the alias also like checking user id and product id against did like to find all other products liked by the same user SELECT product name product AS Product COUNT also like product id AS Also liked by users FROM likes AS did likeJOIN likes AS also like ON also like user id did like user id AND also like product id did like product idJOIN product ON product id also like product idWHERE did like product id insert base product id hereGROUP BY ORDER BY COUNT also like product id DESCJust like the first method we used an additional join to make the results look pretty here As you can see the results of both queries are identical displaying all products also liked by people who liked Lux Shampoo product id This script can be easily modified to display similar results for all other products in the product table Of course most well known implementations of collaborative filtering are substantially more complex than our simple examples but the fundamental logic behind all of these systems boils down to the same principles used here Please feel free to comment below with any questions or suggestions	2021-04-22 16:37:42
海外TECH	DEV Community	Let's Build an AWS Lambda in C#!	https://dev.to/instantiator/let-s-build-an-aws-lambda-in-c-2kaf	Let x s Build an AWS Lambda in C At first glance Amazon Web Services AWS can seem impenetrably complex but it s not so bad once you ve found your way around it…A Lambda is a lightweight short lived event triggered process that can run reliably whenever it is needed AWS Lambdas are perfect for small tasks I ve put together a short tutorial to surface some of the concepts you ll need and walk you through the process of building your first Lambda in AWS For this tutorial we ll build something a little more ambitious than the traditional “Hello world application and through that I hope to demistify it a bit Read the full tutorial at instantiator devPart AWS users roles permissionsPart build deploy invokePart APIs and secretsPart locating logsPart writing to SPart scheduling triggers	2021-04-22 16:27:27
海外TECH	DEV Community	Things Front-End Developer Should Learn In 2021	https://dev.to/pawanbhayde/things-front-end-developer-should-learn-in-2021-j53	Things Front End Developer Should Learn In things you should learn in FrameworkIn we ll probably see a duel between Facebook s ReactJS and the community driven VueJS React currently has stars on GitHub while Vue has been starred even more stars Angular for example has only stars So for front end developers working with or wanting to work with JavaScript frameworks should focus on React and Vue as their primary choices Angular is a valid option if you re working on large enterprise projects Static Site GeneratorsStatic site generators combine both the power of server side rendering very important for SEO but also initial load time and single page applications Many projects these days choose an SSG even if they don t need server side rendering because solutions like Next or Nuxt come with handy features such as markdown support module bundlers integrated test runners etc If you re serious about front end development you should take a close look into the following projects and try to get some hands on experience on them •Next React based Nuxt Vue based Gatsby React based Gridsome Vue based JAM stackThe term JAMstack stands for JavaScript running on the client for example React Vue or VanillaJS API server side processes are abstracted and accessed over HTTPS via JavaScript and markup templated markup that s prebuilt at deploy time There are some best practices if you want to work with the JAMstack •The entire project served on a CDN •Everything lives in Git •Automated builds •Atomic deploys •Instant cache invalidation PWAProgressive web apps PWA will definitely be a thing in More and more companies are choosing PWAs over native apps to offer rich mobile experiences to their users PWAs are reliable instant loading work without internet connection fast smooth animations quick responses to user interaction and engaging native app feeling great user experience Reasons for building a progressive web app are forexample •Can be added to a user s home screen from the browser•Work even if there isn t an internet connection•Support web push notifications for enhanced user engagement•Make use of Google s Lighthouse features Code Editors IDEsJust like in Microsoft s VS Code will be the number one editor for most front end engineers in It offers almost IDE like features like code completion and highlighting and can be extended almost infinitely via its extension marketplace The marketplace in particular is what makes VS Code so awesome Here are some of the best vs code extensions for you as a front end developer •JavaScript ES code snippets•npm•Prettier•CSS Peek•Vetur•ESLint•Live Sass Compiler•Debugger for Chrome GraphQLOne of the hottest topics right now and definitely a thing for you to learn or improve on in is GraphQL While REST has long been considering the de facto standard for designing web APIs by offering great concepts like stateless servers RESTful APIs are more and more considered inflexible when it comes to keeping up with the rapidly changing clients accessingthem GraphQL was developed by Facebook to tackle the exact issues developers are facing when dealing with Restful APIs Some Extra Technologies•Testing Unit tests Integration tests End to end test•Clean Code•Git git config git init git clone git status git add git commit git push git pull git branch•Soft Skills Empathy Communication Teamwork Patience Problem solving Accountability PhotoshopNote visit my youtube channel for frontend tutorialssubscribe to my youtube channel Resent post Color stuff Resources For Web designers Pawan Bhayde・Apr ・ min read webdev design uiweekly ux	2021-04-22 16:26:06
海外TECH	DEV Community	Building a Healthier Planet with Open Source Software	https://dev.to/devteam/building-a-healthier-planet-with-open-source-software-25jn	Building a Healthier Planet with Open Source Software Happy Earth Day one and all Each year on Earth Day April our team takes a moment to pause and think about our individual and collective impact on the planet we all share with one another ーand the flora and fauna that call Earth home Today we also celebrate Sloan the Three Toed Sloth our beloved mascot part time community moderator and publisher of anonymous posts here on DEV If you ever want to post something but don t necessarily want your name attached Sloan is your gal That s a lot of responsibility for a mammal that moves at km h mph ltag user id follow action button background color AAF important color FFFFFF important border color AAF important Sloan I help moderate content and welcome new users to this platform I also ask questions on behalf of members looking for advice from the community Sloths like Sloan typically live in the lowland tropical jungles of Central and South America ーso we re pretty grateful that she spends so much time hanging out with us on DEV This year we asked Sloan how she wanted to celebrate Earth Day She s still recovering from the exertion of our celebration featuring an interview with Dr Rebecca Cliffe one of the world s leading experts on sloths So today she asked us to pass the microphone to our community Sloan s request Share your favorite open source projects that benefit the environment in the comments belowSloan knows that software developers can have a meaningful impact on the world we live in Nothing demonstrates that more strongly than the commitment of the open source community to share knowledge freely and improve codebases with wide technical input There are so many open source projects that exist to serve the environment and many of them are actively seeking contributors like you A few of our favorite environmental open source projects include Rainforest Connection RFCx ーA non profit tech startup building scalable open source solutions to illegal logging poaching and environmental threats Trends earth ーa QGIS plugin that supports monitoring of land change including changes in productivity land cover and soil organic carbon Awesome Earth A bank of resources services products and ideas that help fight the negative impact of climate change Plus the winners of our Hack the Planet contest with New Relic built some pretty incredible tools including A website that uses open data to demonstrate the effect of climate change in PeruAn app that uses historical weather data to show today s average temperature in your cityA tool that rewards users for educating themselves on the climate crisis through Spotify podcasts What about you What are your favorite environment focused open source projects How can the DEV Community contribute ​With Earth Day love from Sloan and the DEV team	2021-04-22 16:23:28
海外TECH	DEV Community	Building an E-Library with  Django and Fauna	https://dev.to/chukslord1/building-an-e-library-with-django-and-fauna-1jlg	Building an E Library with  Django and FaunaWritten in connection with the Write with Fauna program This article will guide you to build a simple electronic library application using the Django web framework and implement the database with Fauna This e library would allow authenticated users to add books to the inventory search for books and view book details PrerequisitesTo fully understand this tutorial you are required to have the following in place Python or newer Basic understanding of Fauna Basic understanding of Django A text editor Introduction to FaunaIf this is the first time you hear about Fauna visit my previous article here for a brief introduction Creating The  E Library DatabaseTo create a Fauna database you have to first sign up for an account Suppose you have not done that already After signing up you can create a new database by clicking on the CREATE DATABASE button on the dashboard After clicking on the button as shown in the image above you need to give your database a name and save it Creating The CollectionsYou need to create two collections in your database the Books collection and the Users collection The Books collection will store the documents for all the books added to the e library While the Users collection will store users data registered on the platform For the History days and TTL use the default values provided and save Creating The IndexesYou will create three indexes for your collections user book index and book index all The user index will allow you to scroll through data in the User collection It has one term which is the username field This term will enable you to match data with the username for easy querying The username field is unique Both book index and book index all allow you to scroll through data in the Books collection The book index index has one term which is the title field The book index all index also has one term which is the availability field Creating an API keyTo create an API key go to the security tab on the left side of your dashboard then click New Key to generate a key You will then be required to provide a database to connect to the key After providing the information required click the SAVE button Your secret key will be presented as in the image above hidden here for privacy after saving your key Copy your secret key from the dashboard and save it somewhere you can easily retrieve it for later use Building the Django AppNow you will be learning how to implement the various functionalities of the e library app Cloning the AppRun the code below in your command line to clone the repo containing the Django app on Github git clone  Importing the  Required Librariesfrom django shortcuts import render redirectfrom django contrib import messagesfrom django http import HttpResponseNotFoundfrom faunadb import query as qimport pytzfrom faunadb objects import Reffrom faunadb client import FaunaClientimport hashlibimport datetime Initializing Fauna ClientTo initialize the Fauna client copy the code below and replace secret key with the API key you created earlier client FaunaClient secret secret key The Index Pagedef index request return render request index html This page contains all the navigation for the e library application The Login Functionalitydef login request if request method POST username request POST get username strip lower password request POST get password try user client query q get q match q index user username if hashlib sha password encode hexdigest user data password request session user id user ref id username user data username return redirect App index else raise Exception except messages add message request messages INFO You have supplied invalid login credentials please try again danger return redirect App login return render request login html In the code above you collected the username and password passed by the user in the POST request You then made a query to the FQL Fauna Query Language client using the username as a match to check if the user exists in the database If the user exists and the password in the database matches the one passed you redirect the user to the index page The Register Functionalitydef register request if request method POST username request POST get username strip lower email request POST get email strip lower password request POST get password try user client query q get q match q index user username messages add message request messages INFO User already exists with that username return redirect App register except user client query q create q collection Users data username username email email password hashlib sha password encode hexdigest date datetime datetime now pytz UTC messages add message request messages INFO Registration successful return redirect App login return render request register html In the code above you collected the username email and password passed by the user in the POST request You then check if the username exists in the database by making a query to the FQL client and matching it with the username If the user does not exist then an account is created using the fields passed The Add Book Functionalitydef add book request if request method POST title request POST get title genres request POST get genres summary request POST get summary pages request POST get pages copies request POST get copies author request POST get author about request POST get about try book client query q get q match q index book index title messages add message request messages INFO Book Already Exists return redirect App add book except book client query q create q collection Books data title title genres genres summary summary pages pages copies copies author author about about availability True messages add message request messages INFO Book added Successfully return redirect App add book return render request add book html In the code above you collected the title and other book details passed in the POST request  You then queried the FQL client to check if the book matching the title passed exists in the database using the book index index If the book doesn t exist then a book is created in the Books collection using the details The Search Book Functionalitydef search books request if request GET get search try search request GET get search book client query q get q match q index book index search data context book book return render request search books html context except messages add message request messages INFO No book found return render request search books html else try books client query q paginate q match q index book index all True data book count len books page number int request GET get page book client query q get q ref q collection Books books page number id data context count book count book book next page min book count page number prev page max page number return render request search books html context except messages add message request messages INFO No book found return render request search books html In the code above you checked if the user passed a search in the get request If yes  you then query the FQL client for books whose title matches the search value using the book index index However if the user didn t create a search you make a query to the FQL client for books whose availability matches the value “True using the book index all index You then paginated the data retrieved using the pagination method thus getting the data where the page number passed matches the id of the book in the database The Details Functionalitydef detail request slug try book client query q get q match q index book index slug data context book book return render request detail html context except return render request detail html In the code above you passed slug as an argument that the function expects to pass from the url  You then query the FQL client using the book index index to get the book whose title matches the slug passed You then render the particular book to the front end as context The App URLsIn the App urls py file you will find the code below from django conf import settingsfrom django conf urls static import staticfrom django urls import path includefrom import viewsapp name App urlpatterns path views login name login path register views register name register path login views login name login path index views index name index path search books views search books name search books path detail lt slug gt views detail name detail path add book views add book name add book In the code above you defined all the required urls and connected them to their respective view functions ConclusionIn this article you learned how to build an electronic library application with Fauna s serverless database and Django We saw how easy it is to integrate Fauna into a Python application and got the chance to explore some of its core features and functionalities The source code of our electronic library application is available on Github If you have any questions don t hesitate to contact me on Twitter LordChuks	2021-04-22 16:13:18
海外TECH	DEV Community	#11 of 100DaysOfCode	https://dev.to/icecoffee/11-of-100daysofcode-28ee	of DaysOfCodeEleventh Day Today is all about routing List Of Things That I Learned TodayHow to use React Router Just a note React Router is a beautiful third party library that can be used to implement lightning fast client side routing on our react application It s a beauty for real Most of all you can declare patterns to get your routes and then we can just use the useParams hook to read the route Reading routes via use params Applying a page Nothing too serious just check if you have received the data if not return markup for page Implementing client side navigation Redirecting using the useNavigate hook Link and NavLink components lt Link to nameOfTheRoute gt lt Element you want to show gt or Text lt Link gt Link is just a smart cousin of anchor tag it just got to attribute instead of href plus it s smart lt NavLink to nameOfTheRoute activeStyle ObjectContainingStyles gt lt Element you want to show gt or Text lt NavLink gt Link is smart but so is NavLink the only additional functionally it provides as you can see is activeStyle attribute and that is quite literal The additional styles that a nav link gets after we click on it Easy And that s all for today Thanks for joining me comment down below if you got any suggestions Have a wonderful day	2021-04-22 16:05:21
海外TECH	DEV Community	Advices on games' architecture	https://dev.to/superfola/advices-on-games-architecture-2ej7	Advices on games x architectureIn this article I will try to highlight important things when developping your own games according to me The importance of a clean codeI started programming game at a very young age in C with the SDL and I have to say that my code got messy very quickly Functions with hundreds of lines structures handling too many different things which ultimately led to poor bug tracking memory leaks and in the end another unfinished project Learning as soon as possible to divide your code into small functions each doing one and only one single task putting your related data into the same structure for efficient memory access will save you a lot of time when debugging and ultimately will help you when enhancing your games Re using codeThe importance of re usable code is that you won t have to reinvent the wheel for common problems Instead of having functions reading configuration files each one taking different parts of the file you could have a single function loading the file and returning a map String gt Value which will be used by the other functions This way if you want to change the type of configuration file you use let s say from JSON to CSV you only have a single function to update your maintenance cost will be lower and you will have more time to spend on more important part of your project Dividing into scenesVery often when I start working on a new game I just put everything in the main function the game loopthe update processthe rendering And it gets quickly bulky and hard to manage I quickly came up with a known pattern a game manager with scenes I m talking in OOP The idea is to have an Application class in charge of running the game loopupdating the current scene and maybe GUI rendering the current scene and maybe GUI handling the eventsIt could look like this C class Application public template lt typename S typename Args gt void add scene Args amp amp args m scenes push back std make unique lt S gt std forward lt Args gt args void render GUI specific m scenes m current gt render m screen void update float delta time GUI specific m scenes m current gt update delta time void run while m screen isOpen float dt getTimeSinceLastFrame if auto event getEvent event handle App specifics m scenes m current gt handle event event update dt render m screen flip private std vector lt std unique ptr lt Scene gt gt m scenes std size t m current The idea is to have a global entity controlling every scene allowing easy transition between a MenuScene and a OverWorldScene a BattleScene This way the code related to the menu stays in an entity devoted to this and only this making code updates easier we know that the menu related code will be there and not anywhere else Scene graph and animations systemAnimated sprites are very common in games and I often find myself writing an animator for them I found that the best way of doing this is having a scene graph where every entity is a node of this graph my scenes are nodes themselves having children Thus an animated sprite is a node as well An animated sprite would be a collection of predefined sprites with a given delta time between each of its frames This implies that the animation being a node of the scene graph a node needs an update delta time and a render surface method We could even take it further and add states to the animated sprites which I often do to have a single entity managing all the animations for let s say your player when running walking crouching Source jmonkeyengine wikiOf course the order of the children of a given node in the scene graph is important here we would draw the character and its weapon on the front then the house then the other NPCs and finally the terrain But a scene graph can be even more powerful you can have a GUI being a node of your graph as well as a sprite animated or not a background image a text An easy way to represent actionsIt s something I learnt about recently and it drastically changed the way I was creating my games It s called the command pattern everything you can do is an action Opening a door An action Attacking an ennemy An action Burning the floor with a spell Also an action Healing your character Still an action And you can even extend it to NPCs a monster attacking you will create an AttackAction source target damage in charge of handling the attack if it s possible ie the target has HP if it misses its crit chance Every entity that can act would return a polymorphic Action class may it be a MoveAction AttackAction or even UseObjectAction and the application will receive the actions and run them if they met some requirements for example The idea is explained by Bob Nystrom in Is There More to Game Architecture than ECS Note I implemented this pattern here and they are executed here ConclusionIf you wish to take this subject a bit further I advise you to read Game Programming Pattern by Bob Nystrom	2021-04-22 16:04:32
Apple	AppleInsider - Frontpage News	Apple begins publicly testing revamped Apple Maps for Spain and Portugal	https://appleinsider.com/articles/21/04/22/apple-begins-publicly-testing-revamped-apple-maps-for-spain-and-portugal?utm_medium=rss	Apple begins publicly testing revamped Apple Maps for Spain and PortugalApple is now publicly testing its revamped Apple Maps in Spain and Portugal hinting that a rollout in the region could be on the way The newly redesigned Apple Maps was first introduced with iOS and Apple spent much of rolling it out in the U S As of January the rollout was complete and at WWDC Apple announced plans to expand it other countries Avid Apple Maps watcher Justin O Beirne spotted the public test highlighting it on his blog Read more	2021-04-22 16:25:12
Apple	AppleInsider - Frontpage News	iPhone 11, iPhone 12 dominate Apple's US sales, cheaper models struggle	https://appleinsider.com/articles/21/04/22/iphone-11-iphone-12-dominate-apples-us-sales-cheaper-models-struggle?utm_medium=rss	iPhone iPhone dominate Apple x s US sales cheaper models struggleThe iPhone was the top selling individual model in the U S during Apple s second quarter while the four iPhone models comprised of sales The month old iPhone gained the US sales crown in the March quarterThe lower cost iPhone captured a share of Apple s U S sales during the March fiscal quarter according to data analysis group Consumer Intelligence Research Partners CIRP The handset s combination of large screen and starting price appear to make it a hot seller more than months after the phone launched Read more	2021-04-22 16:11:45
Apple	AppleInsider - Frontpage News	Belkin Wemo Stage arrives with HomeKit support, NFC setup, and Thread	https://appleinsider.com/articles/21/04/22/belkin-wemo-stage-arrives-with-homekit-support-nfc-setup-and-thread?utm_medium=rss	Belkin Wemo Stage arrives with HomeKit support NFC setup and ThreadBelkin will soon release its Wemo Stage scene controller for HomeKit which includes support for six individual scenes as well as eventual Thread support Using the Wemo Stage scene controllerThe Wemo Stage previously unveiled during CES is a HomeKit button and has three dimples down the front of the remote Each of the buttons on the Stage has a long and short press that can be programmed via the Home app Read more	2021-04-22 16:01:01
海外TECH	Engadget	Brompton's Electric bike is being recalled in the US due to an acceleration bug	https://www.engadget.com/brompton-electric-us-recall-162201965.html	Brompton x s Electric bike is being recalled in the US due to an acceleration bugThe US Consumer Product Safety Commission CPSC has recalled Brompton electric bikes in US over a software bug that can cause the vehicle to unintentionally accelerate	2021-04-22 16:22:01
海外TECH	Engadget	Foxconn drastically scales back plans for $10 billion Wisconsin factory	https://www.engadget.com/foxconn-wisconsin-factory-scaled-down-161101946.html	foxconn	2021-04-22 16:11:01
海外TECH	Engadget	Wemo's latest smart home gadget is a $50 Apple Home remote	https://www.engadget.com/belkin-wemo-stage-scene-controller-160049721.html	scenes	2021-04-22 16:00:49
Cisco	Cisco Blog	Securing the air with Cisco’s wireless security solution	https://blogs.cisco.com/networking/securing-the-air-with-ciscos-wireless-security-solution	Securing the air with Cisco s wireless security solutionCisco next generation aWIPS along with Rogue management solution provides wireless intrusion threat detection and mitigation mechanism that secures the air	2021-04-22 16:03:17
海外TECH	CodeProject Latest Articles	Winforms-datavisualization .NET 5	https://www.codeproject.com/Articles/5300595/Winforms-datavisualization-NET-5	datavisualization	2021-04-22 16:19:00
海外科学	NYT > Science	NASA's Mars Ingenuity Helicopter Completes Second Flight	https://www.nytimes.com/2021/04/22/science/nasa-mars-helicopter-ingenuity.html	completes	2021-04-22 16:54:14
海外科学	NYT > Science	The Vaccination Gender Gap: Women Are Getting Shots at a Higher Rate Than Men	https://www.nytimes.com/2021/04/22/health/covid-vaccines-gender.html	summer	2021-04-22 16:47:05
海外科学	NYT > Science	Watch Video of NASA Mars Helicopter Ingenuity's First Flight	https://www.nytimes.com/2021/04/19/science/nasa-mars-helicopter.html	Watch Video of NASA Mars Helicopter Ingenuity x s First FlightThe brief test of the experimental vehicle called Ingenuity shows how explorers can study the red planet from the sky as well as the ground	2021-04-22 16:05:28
海外科学	BBC News - Science & Environment	Biden: This will be 'decisive decade' for tackling climate change	https://www.bbc.co.uk/news/science-environment-56837927	summit	2021-04-22 16:12:04
金融	金融庁ホームページ	「新型コロナウイルス感染症関連情報」特設ページを更新しました。	https://www.fsa.go.jp/ordinary/coronavirus202001/press.html	新型コロナウイルス	2021-04-22 17:00:00
金融	金融庁ホームページ	銀行をご利用のお客様へ－新型コロナウイルスの感染を防ぐためのお願い－（2021年５月版）を掲載しました。	https://www.fsa.go.jp/ordinary/coronavirus202001/zenginkyo05.pdf	新型コロナウイルス	2021-04-22 17:00:00
金融	金融庁ホームページ	銀行をご利用のお客様へ－新型コロナウイルスの感染を防ぐためのお願い－（2021年５月・英語版）を掲載しました。	https://www.fsa.go.jp/ordinary/coronavirus202001/zenginkyo05En.pdf	新型コロナウイルス	2021-04-22 17:00:00
金融	生命保険おすすめ比較ニュースアンテナ waiwainews	23歳。社会人2年目の方からの投資相談〜投資は早いうちにね！〜	http://seiho.waiwainews.net/view/12319	newsallrightsreserved	2021-04-23 01:26:33
金融	生命保険おすすめ比較ニュースアンテナ waiwainews	介護と経済力	http://seiho.waiwainews.net/view/12317	newsallrightsreserved	2021-04-23 01:26:29
海外ニュース	Japan Times latest articles	Tokyo confirms 861 new COVID-19 cases Thursday as Osaka logs 1,167	https://www.japantimes.co.jp/news/2021/04/22/national/tokyo-confirms-861-new-covid-19-cases-thursday/	osaka	2021-04-23 02:45:04
海外ニュース	Japan Times latest articles	Can security be improved by bringing personal data back to Japan?	https://www.japantimes.co.jp/news/2021/04/22/business/corporate-business/personal-data-safety/	Can security be improved by bringing personal data back to Japan While storing and managing data within Japan may better protect against foreign governments attempts to obtain personal information critics are yet to be convinced	2021-04-23 02:01:03
海外ニュース	Japan Times latest articles	Line data scandal alerts Japan of need to get serious about data protection	https://www.japantimes.co.jp/news/2021/04/22/business/corporate-business/line-data-protection/	Line data scandal alerts Japan of need to get serious about data protectionFollowing the news that the firm had allowed a Chinese software company to access users personal information calls are being made for better regulation of	2021-04-23 02:00:44
海外ニュース	Japan Times latest articles	Kazuma Okamoto homers to help Giants tame roaring Tigers	https://www.japantimes.co.jp/sports/2021/04/22/baseball/japanese-baseball/kazuma-okamoto-homers-tigers/	Kazuma Okamoto homers to help Giants tame roaring TigersKazuma Okamoto hit a pair of solo home runs to help lift the Yomiuri Giants to a come from behind win over the Central League leading Hanshin	2021-04-23 02:15:06
海外ニュース	Japan Times latest articles	Australian project striving to find subjects of lost Japanese photos	https://www.japantimes.co.jp/community/2021/04/22/general/australia-japanese-photos/	market	2021-04-23 02:00:19
海外ニュース	Japan Times latest articles	Will the Suga-Biden summit provoke China?	https://www.japantimes.co.jp/opinion/2021/04/22/commentary/japan-commentary/joe-biden-yoshihide-suga-japan-u-s-relations-china/	Will the Suga Biden summit provoke China Based on my observations global media coverage of the Suga Biden summit meeting in Washington was rather favorable Walter Russell Mead for example wrote in The	2021-04-23 01:59:02
海外ニュース	Japan Times latest articles	The antitrust case against Europe’s breakaway soccer league	https://www.japantimes.co.jp/opinion/2021/04/22/commentary/world-commentary/sports-soccer-european-super-league-antitrust-fifa-uefa/	The antitrust case against Europe s breakaway soccer leagueThe latest proposal hews more closely to the American model of sports where the same teams compete and see steady income and higher valuations as	2021-04-23 01:24:20
海外ニュース	Japan Times latest articles	It’s too soon to call the Derek Chauvin verdict a turning point	https://www.japantimes.co.jp/opinion/2021/04/22/commentary/world-commentary/derek-chauvin-george-floyd-blm-race-discrimination/	It s too soon to call the Derek Chauvin verdict a turning pointThe jury was not asked to determine whether racism was behind the incident It was asked to only to determine whether Chauvin knowingly caused Floyd s	2021-04-23 01:14:45
ニュース	BBC News - Home	Biden: This will be 'decisive decade' for tackling climate change	https://www.bbc.co.uk/news/science-environment-56837927	summit	2021-04-22 16:12:04
ニュース	BBC News - Home	Former Bay City Rollers frontman Les McKeown dies aged 65	https://www.bbc.co.uk/news/entertainment-arts-56848233	mckeown	2021-04-22 16:43:37
ニュース	BBC News - Home	Government apologises over failure to commemorate black and Asian troops	https://www.bbc.co.uk/news/uk-56840131	apologises	2021-04-22 16:32:52
ニュース	BBC News - Home	Coronavirus: 'We want to get home, but there aren't any tickets'	https://www.bbc.co.uk/news/business-56846968	deadline	2021-04-22 16:32:53
ニュース	BBC News - Home	Greta Thunberg warns US lawmakers over climate change	https://www.bbc.co.uk/news/world-us-canada-56851915	fossil	2021-04-22 16:22:43
ニュース	BBC News - Home	Covid-19 in the UK: How many coronavirus cases are there in your area?	https://www.bbc.co.uk/news/uk-51768274	cases	2021-04-22 16:35:12
ニュース	BBC News - Home	Covid: When will I get the vaccine?	https://www.bbc.co.uk/news/health-55045639	covid	2021-04-22 16:38:19
ビジネス	ダイヤモンド・オンライン - 新着記事	【SHOCK EYE】チャンスをものにできる人とできない人の差 - SHOCK EYEの強運思考	https://diamond.jp/articles/-/269272		2021-04-23 01:55:00
北海道	北海道新聞	米航空３社、赤字４千億円　コロナで不振、燃料費増も	https://www.hokkaido-np.co.jp/article/536379/	赤字	2021-04-23 01:17:00