投稿時間:2023-03-18 20:16:09 RSSフィード2023-03-18 20:00 分まとめ(17件)

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python	Pythonタグが付けられた新着投稿 - Qiita	2段階最小二乗法	https://qiita.com/KWBT_ECON/items/2a7839880fa3ca2d9dfa	ellgeqk	2023-03-18 19:43:14
python	Pythonタグが付けられた新着投稿 - Qiita	ChatGPTに聞きながらChatGPT APIの使用手順を書いてみた	https://qiita.com/LingmuSajun/items/8ac6b016e0ecc864851e	chatgpt	2023-03-18 19:16:23
Ruby	Rubyタグが付けられた新着投稿 - Qiita	【Rails】エラー　「Webpacker::Manifest::MissingEntryError in」を解決した経緯	https://qiita.com/YutaroShiraishi/items/68b4d5feac2dcbf51048	ifestmissingentryerrorin	2023-03-18 19:30:16
Ruby	Rubyタグが付けられた新着投稿 - Qiita	OSS開発に関わるためのアドバイス	https://qiita.com/shoguito/items/fb5aeb2502d57229dc0e	google	2023-03-18 19:05:10
AWS	AWSタグが付けられた新着投稿 - Qiita	AWS 東京regionに一体何個のAZがあるのか？	https://qiita.com/dennis_wang/items/4651ce61105e182e4307	apnortheasta	2023-03-18 19:10:40
golang	Goタグが付けられた新着投稿 - Qiita	OSS開発に関わるためのアドバイス	https://qiita.com/shoguito/items/fb5aeb2502d57229dc0e	google	2023-03-18 19:05:10
Ruby	Railsタグが付けられた新着投稿 - Qiita	【Rails】エラー　「Webpacker::Manifest::MissingEntryError in」を解決した経緯	https://qiita.com/YutaroShiraishi/items/68b4d5feac2dcbf51048	ifestmissingentryerrorin	2023-03-18 19:30:16
海外TECH	MakeUseOf	What Are Crypto Signal Groups? 5 Reasons You Shouldn't Trust Them	https://www.makeuseof.com/what-are-crypto-signal-groups-reasons-you-shouldnt-trust-them/	What Are Crypto Signal Groups Reasons You Shouldn x t Trust ThemYou can t trust everything you read on the internet and random cryptocurrency buy and sell signals are something to watch out for	2023-03-18 10:31:16
海外TECH	MakeUseOf	How to Move Enemies in Different Ways Using PyGame	https://www.makeuseof.com/pygame-move-enemies-different-ways/	attack	2023-03-18 10:01:16
海外TECH	DEV Community	10 Common Mistakes to Avoid While Writing JavaScript Code	https://dev.to/dhanushnehru/10-common-mistakes-to-avoid-while-writing-javascript-code-39cg	Common Mistakes to Avoid While Writing JavaScript CodeJavaScript is one of the most popular programming languages in use today thanks to its versatility and ease of use However even experienced developers can make mistakes while coding in JavaScript which can lead to bugs and errors in their code In this blog post we will discuss the most common mistakes in JavaScript and how to avoid them Forgetting to declare variables with var let or const One of the most common mistakes in JavaScript is forgetting to declare variables using var let or const If you don t declare a variable JavaScript will create a global variable which can lead to unexpected behavior and bugs Example of not declaring a variable myVariable Hello world This will create a global variableconsole log myVariable Hello world Correct way to declare a variable let myVariable Hello world console log myVariable Hello world Using instead of JavaScript has two types of equality operators and the latter is known as strict equality Using can lead to unexpected behavior because it performs type coercion which means that JavaScript will try to convert the types of the two operands to make them equal It s generally better to use for strict equality checks Example of using console log true type coercion occurs Example of using console log false strict equality checkNot understanding hoisting Hoisting is a JavaScript behavior where variable and function declarations are moved to the top of their respective scopes This means that you can use a variable or function before it s declared which can lead to unexpected behavior if you re not aware of hoisting Example of hoisting myFunction This works even though the function is defined laterfunction myFunction console log Hello world Ignoring semicolons JavaScript is a semicolon sensitive language which means that you should end statements with semicolons JavaScript uses automatic semicolon insertion ASI to insert semicolons where it thinks they are necessary but this can be unreliable and lead to hard to debug issues While JavaScript can usually infer where semicolons should be inserted it s a good practice to add them explicitly to avoid unexpected errors Some developers choose to omit semicolons as a personal preference or to reduce code clutter but it is generally recommended to use semicolons to avoid potential issues Example of not using semicolons let a let b Correct way to use semicolons let a let b Using var instead of let or const Var is an older variable declaration keyword in JavaScript that has been replaced by let and const Using var can lead to unexpected behavior because it doesn t have block level scoping like let and const Example of using var var myVariable Hello world Better to use let or const let myVariable Hello world const myConstant Hello world Overusing global variables Using global variables excessively can lead to naming collisions and unexpected behavior It s generally better to use local variables and functions to minimize the impact of any changes on the global scope Example of overusing global variables let x function myFunction x myFunction console log x global variable was changed by the function Better to use local variables function myFunction let x console log x local variable myFunction Not handling errors properly can lead to unexpected behavior and even crashes It s a good practice to include try catch blocks to handle errors and provide informative error messages Example of not handling errors properly try myFunction catch error console error error Better to provide informative error messages try myFunction catch error console error Error in myFunction error Not using strict mode JavaScript s strict mode is a way to opt into a stricter set of rules and best practices Enabling a strict mode can help catch common errors and enforce better coding practices Example of not using strict mode function myFunction use strict myVariable Hello world This will throw a ReferenceError Better to use strict mode to catch errors function myFunction use strict let myVariable Hello world Using synchronous code where asynchronous code is necessary JavaScript is designed to be asynchronous which means that you should use asynchronous code when waiting for I O operations or other time consuming tasks Using synchronous code in these situations can lead to slow performance and even crashes Example of using synchronous code for an I O operation let data fs readFileSync file txt This will block the event loop Better to use asynchronous code fs readFile file txt err data gt if err console error err console log data Not testing code thoroughly Finally not testing code thoroughly can lead to bugs and unexpected behavior It s a good practice to write unit tests and integration tests to ensure that your code is working as expected and to catch any issues before they become a problem in production Example of not testing code thoroughly function add a b return a b console log add console log add unexpected behavior Better to write tests to catch issues function add a b return a b test addition gt expect add toBe expect add toBeNaN In conclusion JavaScript is a powerful and versatile language but it s important to be aware of its potential pitfalls and common mistakes By following best practices testing thoroughly and avoiding these common mistakes you can write more reliable and bug free codeThank you so much if you have read it so far If you found this post helpful don t forget to follow me on Twitter Instagram Github and subscribe to my YouTube channel ️	2023-03-18 10:32:08
海外TECH	DEV Community	5 resources to create your next CSS background	https://dev.to/justice_hub/5-resources-to-create-your-next-css-background-ll3	resources to create your next CSS backgroundPhoto by Domenico Loia on UnsplashWhenever developing a new website or a new application we need to take into account which background we will use Finding a property background for your design is quite hard You need to take the existing color palette into account the color composition between the elements in the section and the type of design you want to accomplish With these resources you would find it easier to create or find your next background for your next project getwaves ioThis resource is really simple and extremely good when you try to create a wave The waves are commonly used when trying to make a transition between two sections on a website in a creative manner This tool has a simple dashboard as you see in the image and that is all you need You can choose between lines bars or waves as the design Select your color defined as a hex color and add some transparency if needed The third option lets you choose how many waves should be added When you drag the ball it will automatically update the wave and you will instantly see the number of waves applied The last option is to shake to design and regenerate the waves so that they will fit right into your design svgbackgrounds comIf you want to create a full page background with a more creative pattern you can use the svgbackgrounds com website This site provides multiple options whether you like some multi gradient colors to abstract line art Here you also have the option to change the colors used on the background so you can easily make it fit into the current design of your website You can also adjust the opacity and depending on the design further adjust the design by changing the stroke moving lines etc Finally you have the option as seen on the left bar to copy the CSS output directly and put it into your website This website provides SVG backgrounds so you don t need to worry about the scaling of images since the vector elements will take care of it coolbackgrounds iocoolbackgrounds com is also a simple website that provides some advanced patterns You can choose between options as seen on the left You can choose your base color on the top navigation and hereby all options will have generated some designs based on that color If you choose the particles option you will see all the particles moving like gifs You can also adjust the designs by clicking the color palette on the right bottom as well as downloading the design This website does not have the same flexibility and options as svg backgrounds but is still a nifty tool if the design generated is what you need on your site pixabay comPixabay is another free image resource site just like unsplash com where you can use the images without being concerned about copyright infringement What I really like about Pixabay is you have the option to choose between illustrations vector videos and music You have multiple media combined into one single site so if you eventually wanna change your landing page from a fancy background image to a video you can find it here Pixabay has over million royalty free stock photos free to use and you have the option to filter by colors size orientation etc so you can easily find the right photo for your site undraw coUndraw provides simple illustrations that has gained popularity in the last couple of years You can find all different kinds of illustrations based on your need and can search for a particular theme like sport or finance and you will see some illustrations that might matter to you What is so needed is you can change the color of the illustrations in the right top corner and all the illustrations will have that color like illustrated in the image above What is also perfect is that it is open source and you can use them for free Thanks for readingI hope you found this helpful If you did please don t forget to hit the like ️button and save it for future reference Check out my Website and GitHubHey there Want to stay up to date with the latest programming and web development tips and resources Follow me on Twitter and Instagram I ll be sharing all sorts of helpful insights and cool tools for you to check out See you there And visit my DEV and Hashnode for more articles like this	2023-03-18 10:21:15
海外TECH	DEV Community	SOLID Principal	https://dev.to/ajaz/solid-principal-2hkj	SOLID Principal SOLID Design PrincipalSOLID is an acronym for five principles of object oriented programming and design that can help developers create more maintainable flexible and scalable software systems These principles were introduced by Robert C Martin also known as Uncle Bob and have become widely accepted as best practices for software development Single Responsibility Principle SRP The SRP states that a class or module should have only one reason to change In other words a class should have only one responsibility This principle helps to ensure that changes to one part of a system do not affect other parts unnecessarily Open Closed Principle OCP The OCP states that software entities classes modules functions etc should be open for extension but closed for modification This means that we should be able to add new functionality to a system without changing existing code This principle encourages the use of inheritance and polymorphism to achieve this Liskov Substitution Principle LSP The LSP states that objects of a superclass should be replaceable with objects of a subclass without breaking the correctness of the program This means that a subclass should be able to substitute for its superclass without changing the behavior of the program This principle ensures that our code is flexible and can evolve over time Interface Segregation Principle ISP The ISP states that clients should not be forced to depend on interfaces they do not use In other words we should separate interfaces into smaller more focused ones so that clients only need to depend on the interfaces they actually need This principle helps to reduce coupling between components and makes the system easier to maintain and extend Dependency Inversion Principle DIP The DIP states that high level modules should not depend on low level modules Both should depend on abstractions Abstractions should not depend on details Details should depend on abstractions This means that we should design our code so that high level modules such as business logic do not depend on low level modules such as database access or network communication Instead both should depend on abstractions such as interfaces This principle helps to decouple components and makes the system more flexible and easier to test By following these five SOLID principles we can create software that is easier to understand maintain and extend These principles also help to promote good design practices and can improve the overall quality of our code	2023-03-18 10:07:36
海外TECH	Engadget	Discord's themes are locked behind its $10-a-month Nitro subscription	https://www.engadget.com/discord-themes-nitro-subscription-100135630.html?src=rss	Discord x s themes are locked behind its a month Nitro subscriptionDiscord is finally giving you the power to customize your desktop app s interface with various themes for its latest beta test The messaging app has introduced Themes ーone of its most requested features ーwith pre made options to choose from The not so good news You ll only be able to apply them if you re paying for Nitro its most expensive subscription option nbsp Nitro does have other perks including a bigger file sharing limit K and fps streaming as well as the ability to send messages up to characters in length But if you don t really need any of them it s a matter of deciding whether it s worth paying a month or a year for the subscription tier just to be able to access Discord s themes nbsp In case you have been waiting for the feature to drop and do decide to pay for Nitro you can choose from the available color schemes by going to Appearance under Settings You ll now see a new Color section under the existing Light and Dark themes where you can find the main choices There s apparently another hidden color scheme you can see when you click on the Preview Themes button to test out each option before applying one Thankfully Discord is allowing you to use the preview button even if you don t have an existing Nitro subscription so you can at least check out what s available before you make a purchase nbsp This article originally appeared on Engadget at	2023-03-18 10:01:35
海外ニュース	Japan Times latest articles	Midorifuji leads as Osaka tournament left without ozeki or yokozuna after Takakeisho’s withdrawal	https://www.japantimes.co.jp/sports/2023/03/18/sumo/basho-reports/midorifuji-unbeaten-osaka-sumo/	Midorifuji leads as Osaka tournament left without ozeki or yokozuna after Takakeisho s withdrawalThe day tournament at Edion Arena Osaka is now the first since the start of Showa Era in to be contested without a wrestler	2023-03-18 19:11:13
ニュース	BBC News - Home	Imran Khan mobbed by supporters as he leaves for court	https://www.bbc.co.uk/news/world-asia-64999864?at_medium=RSS&at_campaign=KARANGA	islamabad	2023-03-18 10:06:45
ニュース	BBC News - Home	Taylor Swift launches Eras tour with three-hour, 44-song set	https://www.bbc.co.uk/news/entertainment-arts-64999388?at_medium=RSS&at_campaign=KARANGA	arizona	2023-03-18 10:09:59
ニュース	BBC News - Home	Indian Wells: Elena Rybakina beats Iga Swiatek in semi-finals	https://www.bbc.co.uk/sport/tennis/64998843?at_medium=RSS&at_campaign=KARANGA	aryna	2023-03-18 10:01:43