投稿時間:2021-12-07 03:35:44 RSSフィード2021-12-07 03:00 分まとめ(38件)

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AWS	AWS Database Blog	Data preparation for machine learning using Amazon Timestream	https://aws.amazon.com/blogs/database/data-preparation-for-machine-learning-using-amazon-timestream/	Data preparation for machine learning using Amazon TimestreamPrecognition the ability to see events in the future has always fascinated humankind We probably will get there someday but time series forecasting gets you close The human brain is naturally trained to anticipate future events by analyzing the past but the brain often makes only linear predictions because it can t analyze the amount of …	2021-12-06 17:47:51
AWS	AWSタグが付けられた新着投稿 - Qiita	AWS CLIで Web サイトを構築、管理、運用する(7日目)	https://qiita.com/hirosys/items/e18d8611e5eeb3f282fa	cloudfrontgetdistributionconfigコマンドで現状の設定を取得するETagの値を確認する取得したjsonファイルに対して、設定変更を加えるcloudfrontupdatedistributionコマンドを実行して更新するこの記事では、とについてのみ記載します。	2021-12-07 02:03:07
Ruby	Railsタグが付けられた新着投稿 - Qiita	【Rails】ストロングパラメーターの使い所について【初学者の疑問点を簡潔に解説】	https://qiita.com/P-man_Brown/items/9af0eaa8f3bccb3a33aa	userscontrollerrbUsercreateparamsuser上記の場合には、送られてきたパラメーターをの内、userに紐づくものをまとめて受け取っているため、ストロングパラメーターの定義が必要です。	2021-12-07 02:33:29
Ruby	Railsタグが付けられた新着投稿 - Qiita	railsチュートリアル第十三章 マイクロポストの画像投稿	https://qiita.com/masatom86650860/items/6dca2469678910cc6bf5	リストで追加したテストでは、Homeページにあるファイルアップロードと、投稿に成功した時に画像が表示されているかどうかをチェックしています。	2021-12-07 02:25:04
Ruby	Railsタグが付けられた新着投稿 - Qiita	railsチュートリアル第十三章 マイクロポストを削除する	https://qiita.com/masatom86650860/items/b03353e751c860d5c24e	確認redirecttorequestreferrerrooturlの行をredirectbackfallbacklocationrooturlと置き換えてもうまく動くことを、ブラウザを使って確認してみましょうこのメソッドはRailsから新たに導入されました。	2021-12-07 02:24:19
Ruby	Railsタグが付けられた新着投稿 - Qiita	railsチュートリアル第十三章 フィードの原型	https://qiita.com/masatom86650860/items/cb719b94ba131766016d	Railsサーバーのログ内にあるINSERT文では、どういった内容をデータベースに送っているでしょうか確認してみてください。	2021-12-07 02:24:00
海外TECH	MakeUseOf	WhatsApp Enables Disappearing Messages by Default: Here's What's Changing	https://www.makeuseof.com/whatsapp-default-disappearing-messages/	WhatsApp Enables Disappearing Messages by Default Here x s What x s ChangingIt s now easier to keep your WhatsApp chats private as you can choose to have your messages disappear by default	2021-12-06 17:57:04
海外TECH	MakeUseOf	6 Tips for the Perfect DIY Family Christmas Portrait	https://www.makeuseof.com/diy-family-christmas-portrait-tips/	Tips for the Perfect DIY Family Christmas PortraitIt s almost Christmas and we all know what that meansーit s time for the family Christmas portrait Here are some tips for the best results	2021-12-06 17:45:11
海外TECH	MakeUseOf	The 11 Best Tips for Controlling Computer Stress	https://www.makeuseof.com/best-tips-to-control-computer-stress/	manage	2021-12-06 17:30:22
海外TECH	MakeUseOf	6 Ways to Shut Down Windows 11	https://www.makeuseof.com/windows-11-how-to-shut-down/	windows	2021-12-06 17:15:11
海外TECH	DEV Community	Integrating the Passport with the Forem Ecosystem	https://dev.to/devteam/integrating-the-passport-with-the-forem-ecosystem-42ea	Integrating the Passport with the Forem EcosystemThis is the second post of a series that covers the new Forem Passport service provider which integrates with the Forem open source software behind DEV and other communities Upcoming Forem Passport ProjectsThis service provider is such an exciting project in my view because of the power and flexibility baked into the OAuth protocol Not only does it help solve a problem we had i e compliance and support across different platforms it also interacts with many different core and ecosystem projects Some of the projects that relate to Forem Passport in one way or another are Android Mobile AppWe just released the first few versions of our beta Android app Are you interested in being part of the closed beta Do you want to be notified when the open beta rolls out Drop a comment below and we ll contact you iOS Mobile AppVersion includes the Passport integration already Try it out now Better Tooling for Creators to Fight AbuseIn a network of Forem sites smaller instances might benefit from abuse control measures taken in bigger instances like DEV This could include propagation of banished users at least to flag as likely abusers throughout the network making everyone safer ️Abuse in this case refers to anything that doesn t adhere to the Forem s code of conduct or terms and conditions Please note that this is still in ideation and hasn t yet been discussed in great depth Better Integration Between the Passport and the admin Dash for CreatorsWe can automate the process of enabling the Forem authentication for a creator directly from their admin dashboard a lot more than its current form This idea has definitely been discussed and it s actually a high priority goal We want to make it as easy as possible for creators to enable the Forem passport integration so more users can benefit from it across the ecosystem Push Notifications for Mobile Apps on Self Hosted ForemsWe can t openly give out our PN certificates to deliver push notifications to self hosted Forems So in order to overcome this we could rely on the authorization and not authentication aspect of the OAuth protocol The objective of this project is to implement a mechanism relay PN delivery to the Passport via API calls if the certificates aren t available self hosted sites This would only work for users that have connected their accounts with the Passport because that s the key part of how we would avoid abuse from any bad actor if they happen to spam their users Allowing for Social login within Forem Passport itselfWe heard you like service providers so we re planning to integrate service providers on our service provider In all seriousness since we have more control over Forem Passport we could implement many customized authentication providers and make them compatible with our whole ecosystem i e mobile apps Easier account management across many Forem sitesYou could in theory propagate a new profile picture across many Forem sites at once directly from Forem Passport This isn t implemented and hasn t even been discussed in depth either but OAuth should allows us to make some of these integrations possible Open sourcing the Passport codebaseThe core Forem software has been open source for a while now and we want to open source this project as well in the near future for many reasons Our intention is to solidify the Passport project a bit more i e have better abuse control and other details sorted out before publishing the repo We ll be sure to communicate when this happens Invitations amp Closing NotePhew We ve covered a lot in this series so far Invitations We re interested in your feedback on all of the above so please share your thoughts with us in the comments below Do you already have an account on Please leave us a comment below What are your thoughts Which upcoming project from the list above interests you most Any other crazy ideas you might think would be cool to integrate with the Passport project Try it out Version of the Forem iOS app which includes the Passport integrationReminder that you can comment below if you d like to be part of our closed beta test for the Forem Android app Closing Note We re actively working on Forem Passport i e design overhaul abuse control features new integrations etc so expect changes big and small to roll out on a weekly basis In the next post in this series I m going to explain how we managed to implement the Passport project from a technical perspective Keep an eye out for it in the next few days	2021-12-06 17:18:57
海外TECH	DEV Community	Forem’s approach to decentralized Authentication and Authorization	https://dev.to/devteam/forems-approach-to-decentralized-authentication-and-authorization-49a1	Forem s approach to decentralized Authentication and AuthorizationThis is the first part in a series that will cover the new Forem Passport service provider which integrates with the Forem open source software behind DEV and other communities A Brief History of Our Authentication OptionsSince its early days DEV relied solely on authentication providers to set up and access user accounts There are pros and cons with that decision but I d say it s working well overall with over registered users and counting today After DEV became part of the larger Forem umbrella we ve continued to expand from GitHub and Twitter authentication to allowing many other use cases like invite only private or email password registration to name a few Despite these new authentication options our backend implementation of them hasn t changed much This is because we rely on OAuth an open standard authorization protocol framework and a polymorphic approach which allows our team to add new providers that adhere to the OAuth protocol Below I ll explain how these authentication factors connect with external influences like Apple and Facebook leading us to build our own authentication provider If you re more interested in the implementation show me the code check out the next part in this series coming soon How Forem is DecentralizedEmpowering community by giving ownership to creators decentralization is the bedrock of Forem s mission Anyone that hosts their own Forem site becomes part of the world wide web WWW just like any other website does It becomes a bit more interesting when we look at the network of Forem sites In case you missed it a while ago we announced how you can now self host your own Forem Starting your own community with data ownership and the transparency of the open source much like DEV is finally possible Forem Self Host is Now Officially Supported Ben Halpern for The DEV Team・Jul ・ min read forem opensource news meta Since we now have a network of sites that run Forem s open source community software we need to work on the ecosystem around it So we shipped the Forem iOS app with this in mind Forem s Approach to Decentralized Social Media on Mobile Ben Halpern・Jun ・ min read meta forem ios mobile Forem for iOS means that you can browse many different Forem communities in one centralized app on the go Since the days of our DEV iOS app soon to be sunsetted we have enhanced the mobile browser experience with Push Notifications and many more features Together we ve accomplished all of this despite relying on a WebView based implementation which might be a sensitive topic at times but that s a post for another day Authentication Hurdles Apple and FacebookSince a Creator has full ownership of their Forem we can t control the authentication methods they choose to enable this is the point Apple on the other hand requires everyone using their authentication to comply with their guidelines We actually ranted joked a little about the “SIWA rule in a DEV Twitch Stream a while ago along with other mobile ecosystem related conversations SIWA is the acronym we use for Sign In With Apple Because Apple requires every iOS app that allows for social logins to have SIWA enabled the Forem iOS app is being rejected by AppStore reviewers when they find some Forems listed in the app don t have SIWA enabled by choice Despite being less than ideal we had to hide all social authentication providers if the Forem site doesn t have SIWA enabled within the ForemWebView context which means it s being rendered in a mobile app This is the PR for that in case you re curious Later Facebook shut down their OAuth flow protocol in Android WebView contexts According to them this was a decision made “for security reasons This is the issue where some of this conversation has taken place Similar to the SIWA situation we re not able to show the Facebook auth option Authentication on a Decentralized Network of Forem CommunitiesWith these challenges led us back to a big picture idea discussed over year ago an SSO solution that would work across Forems The goal is to make authenticating with any Forem site easier ーon any platform or context Enter Forem Passport OAuth is incredibly powerful and even somewhat democratic in the sense that each individual user chooses to authorize or revoke the permissions they ve given through the OAuth protocol The iOS mobile app now integrates directly with Forem Passport and we ve started to reach out to creators so they can enable the Forem authentication provider to allow for this better experience across platforms On some Forem sites like DEV CodeNewbie and forem dev you can already connect your Forem Passport account from your settings or directly register a new account using the Forem auth provider In the next post in this series I m going to share the ongoing and upcoming projects we re working on all of which integrate with the Passport project in one way or another Read all about it here	2021-12-06 17:18:40
海外TECH	DEV Community	JSON Formatter - Your Lifesaver	https://dev.to/arnavkr/json-formatter-your-lifesaver-5db4	JSON Formatter Your Lifesaver Welcome Devs As of now you already have seen that in our day to day work we come up with many types of URLs and files specifically JSON files they are almost everywhere For files its clear You use a text editor with a beautiful syntax highlighting and with your desired settings But what about when you view them in browser In your development career you may already heard of json formatter browser extensions They format and syntax highlight the json codes from most of the json responses But most don t give satisfactory results Some of the points that i noted while i was in search of the perfect Json Formatter ExtensionSome of them don t work on JSON response returned with a non json Content Type headerSome of them Don t Have Dark Mode And we are Dark Lovers Some only let us see the json tree but not the raw dataSome are just data stealersSome Just don t remember your preferences on specific sitesSome of them aren t regularly maintainedAnd so on Here comes my JSON Formatter So after seeing all these things i decided to create my own Extension that would solve all those problems and be the devs best friend Its New So its Obvious that its underated now your support would be appreciatable Its Available on Chrome Web Store for Chrome but you can also use the extension on all other chromium based browsers i e edge firefox opera brave etc Short Link bit ly json formatter Website json formatter js org Features of my JSON Formatter ExtensionDark Mode Automated Manual Syntax Highlighting VS Code Styled Works Offline Works with any JSON Webpage webpage should just contain valid json code Automatically Linkify Links just click on links in strings to open them Formats JSON automatically No Setup NeededRaw and Parsed Mode Parsed for ease of your eye and raw for ease of your hands Remembers Theme Preferences knows which mode you prefer on which sites Shortcut Keys tap controls easy navigation Collapsible Toolbar Easily Collapse the Toolbar I am looking for Suggestions and Feedbacks from youIf you have any issues related the extension you can open an issue at the Github Repo i will try to fix it asap Leave a Star on the repo and don t forget to rate the extensionGithub Repo issues Fork JSON Formatter My GitHub Profile Screenshots	2021-12-06 17:15:48
海外TECH	DEV Community	Getting Started with Supabase	https://dev.to/deepgram/getting-started-with-supabase-3egp	Getting Started with SupabaseGetting a database set up and running can be a difficult and time consuming process There are quite a few options these days for quick solutions Supabase is one of those options and is gaining popularity very quickly Let s dive in and see what Supabase offers We ll walk through an example of setting up a database for a Reading List app and learn how to add read edit and delete data from it Who this post is forThis post will be easier to follow if you have a general understanding of how databases work SetupThe first thing you ll need to do is sign up on Supabase It asks you to sign up with GitHub so if you don t have an account you should also sign up for one of those Once you are signed in you ll click the green button that says New Project and select the default organization that was created when you logged in Mine was called briancbarrow s Org This will bring up a box where we provide some info about the project I ll name it reading list give it a strong password and then I m going to select the region West US North California because that is closest to me Click the Create new project button It will take a few minutes for the project to be ready so sit tight until that finishes Now that we have that set up you should see a page with the name of the project you gave and below that it should say Welcome to your new project Below that there are a few features that we can start exploring Database The Supabase Database is an instance of a Postgres Database We ll be diving into this more below Auth The Supabase Auth service makes it relatively easy to set up authentication for your app and also manage your users We won t be covering Auth in this post Storage Supabase offers a storage service for larger files like images or audio files We won t be covering Storage in this post either Initializing the DatabaseClick on the button in the Database card that says Table editor This takes us to a blank dashboard where we ll be able to add and edit our database tables Click the New table button on the left and give it the name books For now don t check the Enable Row Level Security RLS This table will need a few columns in addition to the id column I ve listed them below Column Name title Type varcharColumn Name author Type varcharColumn Name finished Type boolThe table might already have a created at column in there by default We won t need it so you can remove that one Save that and you ve created a table in your database You should now be able to see it Let s fill in some data now Click the button that says Insert Row and fill in the data with a couple of books you like Remember that you can only insert the type of data into columns that you specified in the table setup For example we couldn t store a string inside the finished column because it only accepts booleans Here is a link to more info on data types Here is what my table looked like after I inserted two rows of data Querying the DatabaseWith the data added we can now look at how to send API requests to it in order to read that data In the left hand navigation there is a link to the API documentation This is auto generated for us by Supabase and allows us to connect with our database in our code Right now we want to test that we can get the data we want from our books table In the left hand menu there is a section called Tables and Views Select the books table Since we don t have a JavaScript app set up yet select the Bash tab at the top of the right hand column above the code output This will show us how a basic request is structured I am going to be using Postman which you can get here to send these requests Reading dataGo down to the section that says READ ALL ROWS where you ll find the curl request to get the information from our database Here is what it should look like curl H apikey SUPABASE KEY H Authorization Bearer SUPABASE KEY You can put this info into an app like Postman or you can copy this code and put it directly into your terminal to get the results Note that the SUPABASE KEY in the above code is just a placeholder for your own key To get your API keys to populated into the example requests there is a dropdown labeled Key up at the top of the screen Select anon key Since I m using Postman for these requests I ll first copy the URL from the curl line and paste it into the request URL field in Postman For this request we ll keep it as a GET request I ll then click on the Headers tab inside Postman and add the apikey and Authorization headers respectively It will look something like this with your URL and API Keys instead of mine Inserting data via the APINow we can send the request and the results will show the contents of our books table But what if we want to add or update data using the API Inside of the API page of our Supabase app there are examples of all these types of requests Let s try to insert data I ll find the Insert Rows section of the API documentation and create a new request in Postman with the required fields The request with the new headers you ll need should look something like this This request requires a body of data to be sent to the API endpoint Add some raw JSON data to the body tab of the request like this When we send this if it is successful it will return with the item we just inserted Updating dataA lot of times we have data in the app that needs to be changed updated In the API documentation this will be found under the Update rows section This request is shaped a lot like the Insert request we did above The first difference is that this is a PATCH request instead of a POST request Note that we use a PATCH to update instead of a PUT because PATCH allows us to update only specific fields while PUT requires us to send the entire object with the request We could have used PUT in this case but the PATCH makes it more flexible in the future See this link for more details on the difference The second difference is in the URL At the end of the URL there is a parameter In the example from the API documentation they have it shown as some column eq someValue This is where we tell the database which row we want updated So in our case we can put id eq to update the book with the ID of Let s update the title to The Graveyard Book and the author to Neil Gaiman Deleting dataWe also need to be able to delete data from our table Like before look at the example request in the API documentation page It is similar to the Update request above There aren t as many headers needed though and we don t pass any data We need to specify which row though using a parameter again and make sure you change the type of request to a DELETE request Let s delete the same book we just updated The request will look something like this When you navigate back to the Tables page of the Supabase UI you should only see the first book you created ConclusionNow you know the basics of how to set up and use a Supabase Database This tutorial just scratched the surface of Supabase but it should give you a solid start Before you start using the database in an app you ll also want to add the Row Level Security to your tables This is beyond the scope of this introduction to Supabase blog but basically it makes it so only authenticated users can affect the data in the tables You can find out more in the Supabase documentation page	2021-12-06 17:15:11
海外TECH	DEV Community	Static Code Analysis - A Beginner's Guide	https://dev.to/balapriya/static-code-analysis-a-beginners-guide-4h91	Static Code Analysis A Beginner x s GuideWorking on a large software project can often be a challenging yet rewarding experience As a developer you write code to solve problems However you ll have to write secure bug free code and follow best coding practices while complying with standards And this can be super difficult when you re working under pressure This is where Static Code Analysis can come in handy By the end of this post you ll have learned enough to answer the following questions What is static code analysis Why should you care about static analysis as a developer What are the advantages and limitations of static code analysis What is static code analysis In simple terms static analysis or static code analysis scans your code to identify potential bugs weaknesses and anti patternsーall without actually executing the code So how exactly does static analysis work under the hood Well static analysis often involves parsing of the source code into an intermediary representation on which you can run analysis This analysis then returns potential security issues bugs and performance issues in your codeーwhich you can fix almost immediately Now that you know what static analysis is you ll learn how it can help you write better code in the next section Why should you care about static analysis as a developer As a developer static analysis helps you in every step of the development process You can write code run static analysis review and fix reported bugsーwithout having to wait for code reviews And it s a lot easier to fix bugs as and when they arise rather than having to regress and do it much later Unlike the conventional testing process where you need a specific module to be all ready to go static analysis only requires a chunk of code that can be modeled The term modeled here means that the code can be parsed into that intermediary representation on which the analyzer can be run Please note that your code is never actually run in the process This intermediary representation is often the Abstract Syntax Tree AST If you d like to know more about ASTs consider giving this post a read Because of how static analysis can be integrated into development right from the beginning you can run analysis at every step and make sure your code meets the standards This ensures that your code is almost bug free when the actual testing process begins So far you ve learned how you can benefit from static analysis as a developer Let s put together the advantages in the next section Advantages of Static AnalysisStatic analysis is much faster and a lot more efficient than manual code reviews The earlier you detect bugs and security issues the easier it is to fix them This saves time and substantially reduces cost Waiting until deployment and then checking for vulnerabilities regressing and making fixes is needlessly complex and time consuming By shipping software that s backed by quality code you build trust gain and retain customer base This in turn motivates you to build more helpful products Well are there any caveats yet Let s summarize the limitations of static analysis in the next section Limitations of static analysisOn the flip side static analysis is prone to false positives The analysis may report too many bugs some of which may not actually be bugs For a large codebase reviewing each of the reported bugs and vulnerabilities could come across as an overkill Therefore running static analysis as you code your way through the project is recommended Static analysis can miss certain subtle bugs which require human expertise But it s possible to fix them in subsequent steps of code review And it s always possible to improve the static analysis tool by embedding this intelligence to identify new bugsーtherefore static analysis is extensible to find new bugs Hope this post helped you get a high level overview of static analysis its advantages and limitations See you all soon in another post	2021-12-06 17:14:56
海外TECH	DEV Community	Abstract Syntax Tree (AST) - Explained in Plain English	https://dev.to/balapriya/abstract-syntax-tree-ast-explained-in-plain-english-1h38	Abstract Syntax Tree AST Explained in Plain EnglishAs a developer the source code that you write is all so concise and elegant And other developers can read and understand your code with ease However a compiler has to do a lot more to make sense of your code In this post you ll learn how compilers try to understand what your code does and focus on what an Abstract Syntax Tree AST is and its relevance to static analysis How does the compiler make sense of your code The steps involved in the compiler s processing of source code are illustrated below Let s expand on this a bit The source code is first split into smaller chunks called tokens through the process of lexical analysis Lexical analysis is also called tokenization The tokens are then parsed into a tree called the syntax tree by the parser An Abstract Syntax Tree AST abstracts out certain details and retains just enough information to help the compiler understand the structure of the code Therefore an AST is a tree data structure that best represents the syntactic structure of the source code Don t worry if things aren t clear just yet Over the next few minutes you ll draw a relatable analogy And understand how the compiler works very similarly to how you d try to make sense of a sentence Lexical AnalysisIn this section you ll learn about lexical analysis Suppose you re learning a new languageーnot a programming language though And you re given the task of inferring the meaning of a sentence in that language So how would you do it As a first step you ll try identifying the nouns verbs or more generally words that matter And lexical analysis is very similar to this step Given the source code the compiler tries to first identify the different types of tokens that your code is composed of A token could be any valid entity in the programming languageーa literal that takes a fixed value a variable an operator or a function call As lexical analysis breaks down the source code into tokens it is also called tokenization Syntactic AnalysisSo far you know tokenization leaves you with tokens or entitiesーjust the way you d identify entities in a sentence Now that you ve identified the nouns verbs etc in the sentence how ll you go about inferring its meaning Well you ll now try to parse the relationship between the nouns verbs and the like to see how they fit together and how they conform to the language s grammar This leads to the step of syntax analysis or parsing And to perform syntactic analysis there s a parser that processes these tokens and parses them into a tree called the Abstract Syntax Tree AST More on AST RepresentationJust the way the different entities and their relationships are often language specific there s no one common AST representation In general the AST models the relationship between tokens in the source code and each node contains information about the type of token and related data For example if your node represents a function call the arguments and return values will be the associated data The AST Explorer helps in visualizing ASTs in several popular languages such as Go Python Java and JavaScript Here s a simple example in Python my str code more Here the type of node is VariableDeclaration as we declare the variable my str Relevance of AST in DevelopmentIn most languages parsers that give you the AST will also give you the methods to traverse an AST This would enable you to visit different nodes of the AST to understand and additionally perform analysis So you can define rules traverse the parse tree by visiting each node and check for violation of rules And this is where ASTs are relevant in static code analysis Static code analysis involves parsing of the source code into an intermediary representation on which you can run analysis without actually running the code And the intermediary representation is often the AST This analysis then returns potential security issues bugs and performance issues in your code which you can fix almost immediately For more information on static analysis consider reading this post In this tutorial you ve learned how lexical and syntactic analyses work Identify the tokens in the source code andparse the relationship between these tokens to see how they fit together how ASTs are tree representations of your source code andhow ASTs can help in static analysisThank you for reading Hope you found this post helpful	2021-12-06 17:14:18
海外TECH	DEV Community	What's the difference between C# and C++?	https://dev.to/educative/whats-the-difference-between-c-and-c-5d68	What x s the difference between C and C C and C are general purpose programming languages used for application development across various platforms C and C have rich histories They re both popular choices for software development web development and game development If you re new to computer science it may be difficult to choose which language to learn first In this article we ll discuss the difference between C and C as well as their histories and applications We ll cover C vs C A brief historyWhen was C created When was C created Overview and applications C vs C What is C What is C Major differences between C and C Comparison chart C vs C Should I learn C or C Wrapping up and next steps C vs C A brief historyBoth C and C are based on the C programming language C is a low level programming language that was developed in the s for programming in the UNIX operating system C has various applications to this day including embedded systems and scripting processes for server side web applications Other C based languages include Objective C and Not Quite C When was C created C pronounced “C Sharp was developed in by Microsoft s Anders Hejlsberg It was known as “Cool or C O O L in its early days which stood for “C Like Object Oriented Language C was introduced as a generic object oriented programming OOP language and a direct competitor to Java on the Windows platform In C version was still in the process of catching up with Java by introducing generics and iterators By C was growing into a more distinct hybrid as both an object oriented and functional language C has gained many features over the years and become a multi platform language It was initially intended for development in the Microsoft ecosystem but Microsoft has since released open source tools that support C development across various platforms the Visual Studio Code code editor the Roslyn compiler and the unified NET platform When was C created C was developed in by Bjarne Stroustrup a Danish graduate student Influenced by his PhD thesis Stroustrup aimed to enhance C by incorporating features from Simula and other programming languages C fulfilled the need for object oriented programming within C It was a general purpose language that introduced objects and classes to C As such it was colloquially known as “C with Classes The “ directly comes from C s operator which increments the value of a variable C has since changed significantly and adopted object oriented generic and functional features as well as facilities for low level memory manipulation Overview and applications C vs C At first glance C and C might seem to have more similarities than differences They re both multi paradigm languages that can support object oriented functional and generic programming They are general purpose and widely used for software development web development and game development across platforms Let s examine each language individually before we compare their differences What is C Here s Hello World in C class HelloWorld static void Main System Console WriteLine Hello World gt Hello World C or C Sharp is a high level language that runs on the NET Framework It is a multi paradigm language that includes support for structured imperative reflective and concurrent programming paradigms C code is typically compiled using just in time JIT compilation in Common Language Runtime CLR the virtual machine component of the NET Framework The code is converted to machine instructions that are executable on the computer s CPU C was originally designed for the Microsoft platform Today it has a variety of development applications including Web applicationsMobile applications for Android and iOSDesktop applications for Windows Mac and Linux Video games on the Unity game engine What is C Here s Hello World in C include lt iostream gt using namespace std int main cout lt lt Hello World return gt Hello World C is considered an intermediate language meaning it combines features of high level and low level programming languages It is a multi paradigm language that includes support for procedural object oriented imperative and generic programming paradigms As a low level language it gives you a lot of control over your code C is often a go to language for large and embedded systems and is known for its speed and flexibility C is most often implemented as a compiled language meaning the source code compiles directly into machine code C is often used for system programming and building applications with resource constraints It is also used to develop the following Desktop applicationsOperating systemsEmbedded systemsServersGUI applications like browsers Advanced computation projectsVideo games on the Unreal game engine Major differences between C and C Let s start with three major differences between C and C C and C are classified as different levels of languages C is a high level language C is an intermediate language which means it combines features of high level and low level languages As a high level language C is inherently easier to learn and faster for building applications High level languages are user centric while low level languages are machine centric However high level languages are also inherently limited because they can t perform low level programming A low level programming language offers far more flexibility with your code which makes C more impressive in the category of flexibility C and C code run differently on machines C applications can run natively C on the other hand requires a virtual machine C code is very similar to machine code Your source code is compiled and converted to machine code without the need for a virtual machine On the contrary you need to install the NET framework to run a C application C and C have different approaches to memory management C offers automatic garbage collection but C doesn t This means that C requires you to manually manage what C does automatically in a virtual machine The plus side to manually managing your memory on C is that you also have opportunities to optimize your application from the ground up Comparison chart C vs C Should I learn C or C You can choose whether to learn C or C based on your personal and professional goals Some important factors to consider are the industry you want to work in the amount of time you re willing to spend learning a language and the types of applications you want to develop Here are some factors to consider when choosing which programming language to learn Your game development goals C and C are both used for game development The Unreal game engine uses C while the Unity game engine uses C C is slightly more popular in the industry because it allows programmers more control than C If you re looking to enter the gaming industry you might want to base your decision off the language used by your favorite companies game engines How much flexibility you want in a language Flexibility differs between the languages C is easier to learn than C but C gives you more flexibility with your code as a low level language You can optimize and customize an application however you wish with C Relatively speaking you can do anything with C The types of applications you want to develop The applications you want to develop may also determine your choice C is a top pick for applications in the Microsoft ecosystem especially for Windows desktop applications However C is a cross platform language that can build for other platforms as well One thing C cannot do is create embedded applications For this kind of task C should be your go to C is the top pick for programming for Linux Your web development goals C is a popular choice if you re looking to get into web development You can use C to build dynamic sites and web applications using NET or other open source platforms C is less popular for web development for a few reasons To start cloud based hosting is expensive for C and there are no stable and mature frameworks for C web development That being said C web development is possible and comes with some benefits more control higher speed relatively less resource consumption and an understanding of how the web really works There are certainly developers who prefer C for web development especially when they have limited power and many concurrent users Your desired learning curve The learning curve you re willing to tackle might also impact your decision C usually takes longer to learn than C This is because C is a low level language and is machine oriented while C is more intuitive to users as a higher level language The languages you already know might shorten your learning curve for either language For instance C may be easy to learn if you know Java because they re similar languages C may come easier to you if you re familiar with the C programming language or have a background in another high level or low level language How well you want to understand computers You may not prefer it for every project but C is a great language to learn if you re a computer programmer who wants a deep understanding of how computers work C lets you get hands on with low level concepts and will help you grasp how computers think and operate Other languages might make more sense to you after you ve mastered C Wrapping up and next stepsWe ve seen that C and C are distinct languages that are often used for the same purposes They are popular for web development game development mobile development and software development across various platforms They are classified as different levels of languages and their code is processed differently by machines Whatever you choose there are certainly advantages for learning either language If you have the time and the inclination you may even decide to learn both To help you master C we ve created the C for Programmers learning path The module interactive learning path covers C basics templates OOP concurrent programming and more To help you get hands on with C we ve created this course C for Programmers A Practical Guide The course covers fundamentals of C programming including loops arrays and OOP Happy learning Continue learning about C and C Why C is a good first language to learnThe best C IDEs and code editors for S O L I D Principles of Object Oriented Programming in C	2021-12-06 17:14:09
海外TECH	DEV Community	PHP cheat sheet (updated to PHP 8.1)	https://dev.to/ericchapman/php-cheat-sheet-updated-to-php-81-3o4p	PHP cheat sheet updated to PHP Follow me Follow EricTheCoder Here is my cheat sheet I created along my learning journey If you have any recommendations addition subtraction let me know PHP local serverphp S localhost Comments one line comment This is a multiple lines comment blockthat spans over multiplelines Naming conventions PHP opening closing tag lt php echo Hello World gt if no closing tag the rest of the file will be considered PHP Short syntax for PHP echo lt Hello World gt Enable strict typing first line of your PHP file lt declare strict types Include a PHP filerequire app Product php Create a namespacenamespace App Use a namespaceuse App Product firstName Mike camelCasefunction updateProduct camelCaseclass ProductItem StudlyCapsconst ACCESS KEY abc all upper case with underscore separatorsOutput amp Inputecho Hello World Debug outputvar dump names print r products Input from console name readline What is your name Variables Declaration name Mike string isActive true boolean number integer amount float fruits orange apple banana arrayconst MAX USERS constantdefine MAX USERS constant Assign by reference with the amp keyword name amp name Type conversion age int readline Your age echo  Your age is string age echo gettype age intecho is int age trueecho is float trueecho is string name trueStrings String can use single quote name Mike or double quote name Mike Double quote string can escape characters n new line t tab backslashecho Hello Mike nHello David Double quote string can do interpolationecho Hello name string concatecho Hello name string lengthecho strlen name Remove space s before and afterecho trim text Convert to lowercase uppercaseecho strtolower email echo strtoupper name Converts the first character to uppercaseecho ucfirst name Mike Replace text a by text b in textecho str replace a b text String Contains PHP echo str contains name ke true Find numeric position of first occurrence pos strpos name k Returns portion of string offset length echo substr name pos Mi Numbers Shortcut addition assignment value value or value Shortcut subtraction assignment value value or value Check if numericecho is numeric true Round a numberecho round returns Round a number with precisionecho round returns Random number echo rand Conditionals If elseif elseif condition echo condition elseif condition echo condition else echo all other conditions And condition amp amp if condition amp amp condition echo and Or condition if condition condition echo or One line if isActive return true Null checkif is null name do something Comparaison operation equal no type check equal with type check not equal or amp amp and gt greater than lt less than Ternary operator true false echo isValid user valid user not valid Null Coalesce Operatorecho name Mike output Mike if name is null Null Coalesce Assignment name Mike Null Safe Operator PHP will return null if one is nullecho user gt profile gt activate Null Safe Null Coalesce if null will return No user profile echo user gt profile gt activate Not applicable Spaceship operator return names Mike Paul John usort names function a b return a lt gt b John Mike Paul Return false when convert as booleanfalse null unset Compare same variable with multiple valuesswitch color case red echo The color is red break case yellow echo The color is yellow break case red echo The color is red break default echo The color is unknown Match Expression PHP type match color red gt danger yellow orange gt warning green gt success default gt Unknown Check if variable declareisset color red trueLoops and Iterations for loopfor i i lt i echo i value i while loop number while number lt echo value number number do while number do echo value number number while number lt foreach with break continue exemple values one two three foreach values as value if value two break exit loop elseif value three continue next loop iteration Arrays Array declaration can contain any types example Mike true Array declaration names Mike Peter Shawn John Direct access to a specific element name output Peter How to access an array in an array example add a element to an array names Micheal Array merge array array merge array array Merge with spreading operator also work with associative array array array array Array Concat with Spread Operator names Mike Peter Paul people John names John Mike Peter Paul Remove array entry unset names Peter Array to stringecho implode names output Mike Shawn John Micheal String to Arrayecho explode text Mike Shawn John loop for each array entryforeach names as name echo Hello name Number of items in a Arrayecho count names Associative array declaration key gt value person age gt genre gt men Add to ass array person name Mike loop ass array key gt value foreach names as key gt value echo key value Check if a specific key existecho array key exists age person Return keysecho array keys person age genre Return valuesecho array values person men Array filter return a filtered array filteredPeople array filter people function person return names gt active Array map return transform array onlyNames array map function person return name gt person gt name people Search associative array items id gt name gt product id gt name gt product id gt name gt product id gt name gt product search all value in the name column found key array search product array column items name return Functions function declararionfunction name firstName lastName defaultvalue return firstName lastName function callname Mike Taylor function call with named parameters PHP name firstName Mike lastName Taylor order can change function variables paramsfunction name params return params “ “ params Closure functionRoute get function return view welcome Arrow functionsRoute get fn gt view welcome Typed parameter and typed returnfunction display string first string last string return first last Typed or nullfunction display string name Union type or function display string int data Intersection type and function count and interate Iterator amp Countable value Return any type mixed function logInfo string info mixed No return void function logInfo string info void Enumerations Declarationenum InvoiceStatus case Sent case Paid case Cancelled The enum can then be use as a typefunction printInvoiceStatus InvoiceStatus status print status gt name printInvoiceStatus InvoiceStatus Sent Sent enum with return value and public function exempleenum InvoiceStatus int case Sent case Paid case Cancelled public function text string return match this self Sent gt Sent self Paid gt Paid self Cancelled gt Cancelled function getInvoiceStatus InvoiceStatus status print status gt text print status gt value getInvoiceStatus InvoiceStatus Paid PaidFiles Get the current dir current dir DIR Check if file existif file exists posts first txt do some stuff Read file content into one variable post file get contents file File read file fopen test txt r Output lines until EOF is reachedwhile feof file line fgets file echo line lt br gt fclose file File write file fopen export csv a array name gt Mike age gt Write key name as csv headerfputcsv file array keys array Write lines format as csv foreach array as row fputcsv file row fclose file Errors Throw Errorif someCondition throw new Exception Data format error Catch the Errortry db gt checkData data catch Exception e echo e gt getMessage OOP class declarationclass Person object instantiation person new Person class properties and constructorclass Person protected firstName protected lastName public function construct firstName lastName this gt firstName firstName this gt lastName lastName Constructor Property Promotion PHP class Person public function construct protected firstName protected lastName Getter and Setterclass Person private name public function setName name if is string name throw new Exception name must be a string this gt name name public function getName return this gt name Readonly properties PHP class Person public function construct public readonly string firstName public readonly string lastName static constructorpublic static function create params return new self params person Person create Mike Taylor Static Methodclass greeting public static function welcome echo Hello World Call static methodgreeting welcome Static method callclass greeting public static function welcome echo Hello World public function construct static welcome new greeting Static constantclass Connection const MAX USER echo Connection MAX USER class inheritanceclass Customer extends Person public function name parent name echo Override method self keyword reference current class not modify by inheritance late binding like static will be self welcome Interfaceinterface Animal public function makeSound class Cat implements Animal public function makeSound echo Meow animal new Cat animal gt makeSound Trait mix in trait HelloWorld public function sayHello echo Hello World class Greetings use HelloWorld object new Greetings object gt sayHello Follow me Follow EricTheCoder	2021-12-06 17:07:42
海外TECH	DEV Community	Deploying to Heroku with SvelteKit	https://dev.to/nostro/deploying-to-heroku-with-sveltekit-3350	Deploying to Heroku with SvelteKitIf you re trying to deploy with the built in adapter auto you will probably encounter an E error and or a R error with svelte kit not found This post details how to correct these The other option is to use the adapter node which is what we ll do here you can read about adapters in the SvelteKit docsYou may also be interested inSvelteKit envSvelteKit TailwindCSS Create a svelte appnpm init svelte next my awesome appcd my awesome appnpm i sveltejs adapter node nextOr if you re feeling lucky I do and are already in the my awesome app directory npm init svelte next amp amp npm i sveltejs adapter node next Modify the config file to use the right adaptersvelte config js Change import adapter from sveltejs adapter auto import adapter from sveltejs adapter node Make sure this is presentconst config kit adapter adapter other stuff other stuff Indicate the node version requiredAt time of writing Heroku defaults to if there is no indication otherwise and the build may fail if your version is different package json engines node x npm x Depending on your case npm version may not be strictly necessary for the build to succeed Create the Heroku appYou should have the Heroku CLI installed and be logged in otherwise install it and run heroku loginThis creates the app at my awesome app herokuapp com if the name isn t available the command will fail If you omit the name you will get assigned a random poetic name by Heroku heroku create my awesome appgit add amp amp git commit m My commit message git push heroku mainBy default this create the app in the US region to do it in the EU run heroku create my awesome app region euOnce the build finishes your app will be deployed at my awesome app herokuapp com or random poetic name herokuapp com	2021-12-06 17:02:34
海外TECH	Engadget	The Xbox Windows app will make it easier to know if a game will run well on your PC	https://www.engadget.com/microsoft-xbox-app-pc-label-175256205.html?src=rss	The Xbox Windows app will make it easier to know if a game will run well on your PCWith so many different ways to build a computer one of the trickiest aspects of PC gaming is knowing whether a game you re about to install will play well on your machine Microsoft is testing a feature that could make that easier As spotted by The Verge the Xbox app on Windows now includes a label that will tell you if a game will “play great on your PC Tom Warren The VergeSince there are some titles where the app says “performance check not available yet it doesn t appear Microsoft is comparing the listed system requirements against the components in your PC Instead it would seem the company is building a database where it tests a game against various different machines If you want to test the labels you can do so by downloading the Xbox Insider app and opting into the Windows gaming preview nbsp If the system works well it could solve a common pain point for PC gamers In recent years we ve seen some developers share more granular system requirements for their games telling you not just the minimum and recommended spec but also hardware that will deliver the best experience at Full HD QHD and K respectively Unfortunately there hasn t been anything close to standardization across the industry and that s even before you consider the fact some developers list overly optimistic requirements for their games	2021-12-06 17:52:56
海外TECH	WIRED	Snag Free Beans From Our Fave Coffee Subscription Service	https://www.wired.com/story/atlas-coffee-club-free-coffee-beans-december-2021	additional	2021-12-06 17:52:27
海外TECH	WIRED	DoorDash Joins the Instant Delivery Game—With Employees	https://www.wired.com/story/doordash-joins-instant-delivery-game-employees	DoorDash Joins the Instant Delivery GameーWith EmployeesFor a new service in Manhattan the couriers will cross paths with the company s traditional gig worker contractors who generally aren t eligible for benefits	2021-12-06 17:18:06
ニュース	BBC News - Home	Bibaa Henry and Nicole Smallman: Met PCs jailed for crime scene images	https://www.bbc.co.uk/news/uk-england-london-59474472?at_medium=RSS&at_campaign=KARANGA	nicole	2021-12-06 17:36:35
ニュース	BBC News - Home	Drugs plan aims to help 300,000 problem drug users	https://www.bbc.co.uk/news/uk-59540781?at_medium=RSS&at_campaign=KARANGA	gangs	2021-12-06 17:39:46
ニュース	BBC News - Home	Arthur Labinjo-Hughes: Review to start immediately	https://www.bbc.co.uk/news/uk-england-birmingham-59552002?at_medium=RSS&at_campaign=KARANGA	focuses	2021-12-06 17:31:59
ニュース	BBC News - Home	Storm Barra: Coastal areas braced for strong winds	https://www.bbc.co.uk/news/uk-northern-ireland-59540474?at_medium=RSS&at_campaign=KARANGA	barra	2021-12-06 17:43:29
ニュース	BBC News - Home	Gough wants to 'make Yorkshire a better place' after becoming interim managing director of cricket	https://www.bbc.co.uk/sport/cricket/59545490?at_medium=RSS&at_campaign=KARANGA	Gough wants to x make Yorkshire a better place x after becoming interim managing director of cricketDarren Gough says he wants to make Yorkshire a better and more inclusive place after being appointed interim managing director of cricket	2021-12-06 17:50:37
ニュース	BBC News - Home	Covid-19 in the UK: How many coronavirus cases are there in my area?	https://www.bbc.co.uk/news/uk-51768274?at_medium=RSS&at_campaign=KARANGA	cases	2021-12-06 17:38:40
ビジネス	ダイヤモンド・オンライン - 新着記事	心がラクになる考え方のトレーニング方法 - 精神科医Tomyが教える　１秒で悩みが吹き飛ぶ言葉	https://diamond.jp/articles/-/287790	voicy	2021-12-07 02:55:00
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