投稿時間:2023-01-21 16:04:17 RSSフィード2023-01-21 16:00 分まとめ(7件)

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IT	ITmedia 総合記事一覧	[ITmedia News] 紙でできたデジカメで昭和な写真を撮ってみた　クランク回して動画撮影も	https://www.itmedia.co.jp/news/articles/2301/21/news058.html	itmedia	2023-01-21 15:19:00
js	JavaScriptタグが付けられた新着投稿 - Qiita	JavaScript　スコープ編	https://qiita.com/Mizut452/items/7492bab8a8da221e2da7	javascript	2023-01-21 15:58:12
js	JavaScriptタグが付けられた新着投稿 - Qiita	ライブラリで簡単に無限スクロールを実現 JS/jQuery/PHP/PDO/MySQLを使用して	https://qiita.com/abcya/items/b9833a5b58ca8a8aa1b8	ライブラリで簡単に無限スクロールを実現JSjQueryPHPPDOMySQLを使用してjQueryライブラリのinfinitescrollを利用します。	2023-01-21 15:20:44
海外TECH	DEV Community	5 best reasons why one should learn programming in 2023	https://dev.to/hy_piyush/5-best-reasons-why-one-should-learn-programming-in-2023-25h7	best reasons why one should learn programming in In today s digital age programming has become one of the most in demand skills with job opportunities available across a wide range of industries As technology continues to advance the demand for programmers is expected to grow even more in the coming years In this short yet important article I m going to tell the best reasons why one should learn programming in Job opportunitiesProgramming is a highly in demand skill with many job opportunities available across a wide range of industries According to the Bureau of Labor Statistics employment in computer and information technology occupations is projected to grow percent from to much faster than the average for all occupations This is driven by the increasing use of technology across all industries from healthcare to finance to retail High earning potentialProgrammers tend to have high earning potential with many jobs paying well above the average salary for other professions According to Glassdoor the average salary for a software developer in the United States is around per year Career AdvancementLearning to program opens up a wide range of career opportunities and paths for advancement Whether you re interested in becoming a software developer data analyst or even a business analyst having programming skills can help you achieve your goals With the ever growing need for technology in every aspect of our lives a career in programming can lead to a lifetime of job security Problem solvingProgramming requires critical thinking and problem solving skills Learning to program will help you develop the ability to break down complex problems and come up with efficient and effective solutions These skills are highly valued by employers and will help you succeed in any field you choose CreativityProgramming is a creative pursuit that allows you to build and design your own digital products such as websites mobile apps and even games It allows you to think outside the box and come up with innovative solutions As a programmer you have the ability to create something new and useful and the opportunity to make a real impact in the world In conclusion programming is a skill that will be increasingly important in the future and learning to program can open up a wide range of job opportunities and career paths as well as provide high earning potential career advancement problem solving and creativity skills With the world becoming increasingly digital programming is a skill that will undoubtedly be in high demand in the coming years That s a wrap Thanks for reading Follow me for weekly new tidbits on the domain of tech Need a Top Rated UI UX designer and Front End Development Freelancer to chop away your development woes Contact me on Upwork and FreelancerWant to see what I am working on Check out my Personal Website Twitter and GitHub Want to connect Reach out to me on LinkedIn Follow me on Instagram	2023-01-21 06:36:28
海外TECH	DEV Community	TypeScript Being a Good Boy	https://dev.to/2devyank/typescript-being-a-good-boy-2fj1	TypeScript Being a Good BoyBeginning with TypeScript Let s walk through with an examplelet myname stringIn the above code myname variable is given a type string now what does this signify this makes sure that myname variable can only be assigned with string value only From this we can understand that in TypeScript we can make a variable type specific therefore it reduces the possibility of getting type error because TypeScript catches bugs when we make mistakes in our code Here TypeScript compiler warn us at runtime that number value can not be assigned to a string type variable But is it only limited to type checking I guess we are interpreting TypeScript too soon so the type checker has the ability to check which property can be accessed by a specific variable let me show this with an example In the above screenshot it can be clearly observed that greetings argument in function namaste is of type string therefore when we are trying to access its properties it is only suggesting property of string Is typescript Superset of JavaScript So we generally can t say that typescript is a superset of JavaScript because it doesn t provide additional features to JavaScript but in fact it is a syntactical superset of JavaScript that is it allows to write more precise code with less errors In simple words JavaScript code is not analyzed by any IDE while writing it but TypeScript point towards the error s as soon as it find one So in the above screenshot on left hand side is the typescript code and on right hand side is the JavaScript code as we can clearly observe that if the argument is not passed in the hello function then it can be seen that typescript highlight the error at run time whereas JavaScript run time environment does not show any kind of error Is TypeScript with Any JavaScript So below down is an example of a typescript code with use of Type Any On left hand side is typescript code it can be clearly seen that name argument is of Any type therefore we can pass any type to the function message whereas JavaScript possess this ability by default It is clearly mentioned in Typescript documentation that we can make use of Any whenever we don t want a particular value to cause type checking error but ain t type checking is one of the reason we are making use of Typescript Meet the Union TypeSo there might situation occurs where you want to either pass string or number as type depending on the situation therefore in that case we have a special type known as Union which allows us to pass more than one type and we can make use of any type among those which are passed Let s see an example of this let myname string number myname In the above example myname variable is passed with Union of string and number therefore we can either assign number or string value to the myname variable Let s go more deep in Union suppose a parameter in a function is Union of string and number type therefore if we try to access the property of that parameter then we can only access those property which are mutual in both types i e number and string let s see this with an exampleIn the above example we can observe that num parameter is Union of string and number therefore we are only able to access the common properties of both type NarrowingNow question arises can we access property of only one member of Union so the answer is yes we can achieve this with Narrowing let s see this with an exampleAs we can see in the above code that we are specifically making use of typeof operator to segregate the type of variable to access the property of that particular type this process is known as Narrowing Type AliasesSo what do we do in type aliases is that we create a type which have certain properties in which we don t define any value but only specify the type of that variable I know it may sound confusing but let s see an example of thistype student name string rollno number const junior student name karan rollno const senior student name vyom rollno In above code I have created a type student which is passed with property name and roll no and each property is assigned with their types So one thing to notice with type aliases is that we can pass a single type to more than one objects InterfaceInterface are very similar to type aliases when it comes to defining a interface let me show you an example of interfaceinterface student name string rollno number Interfaces are also used in similar kind as type aliases is used but interface come with its own unique feature lets explore them So the way one interface extend other interface is quite different from how type is extended So below down in the code I have shown how we can add more properties to an interface as I have added section property to the student interface as well as how can a interface can extend other interface interface student name string rollno number interface student section string interface register extends student school string If interface is extended this way then how a type is extended let s take a look at this alsotype livingbeing name string type animal livingbeing amp breed string function liberty dog animal console log name of dog is dog name console log breed is dog breed In the above code type animal is extending the property of type livingbeing GenericsLazy developers like me want to create reusable components so that we don t have to code similar functions again and again So typescript have a very beautiful feature of generics which helps us making a reusable components but let s not go deep into it right away first let me walk you through the process how can we make a component reusable Shown below is an example of a function function reuseme val string number string number return val In the above example we can either pass string or number value as a parameter and in the same way we can only return string or a number type value but what if we want to pass boolean type value as a parameter the answer is that we won t be able to pass that value and at the same time we just can t keep on adding or options to make a component reusable Now one might suggest to use Any type but can this solve our problem and help us make a component reusable let seefunction reuseme val any any return val So I have taken the same function and passed the parameter and return type as Any it does help us to pass any type in parameter and in return but with any there may situation occur where we are passing a string value as a parameter and returning a number value therefore it is going to cause an error but with any typescript compiler won t show error in this case Hence typescript have a feature of generics with which almost every problem is solved let s see how to define a generic typefunction reuseme lt Type gt val Type Type return val So in the above code I have passed Type as argument and return type but I have also passed Type in angular brackets so whenever you pass a type in that brackets it get locked therefore you can t return other type except which is passed as parameter type that means generics gives us the freedom of passing any type but at the same time it stop us from making any mistake	2023-01-21 06:21:18
ニュース	Newsweek	「それくらい自分でやれ！」 27歳セレブ、スタッフを「召使い」扱いする写真に非難殺到	https://www.newsweekjapan.jp/stories/culture/2023/01/-27.php	彼が気にしないのは、金をもらっているからだ。	2023-01-21 15:24:00
海外TECH	reddit	Dehya Skill Mechanics and Details via NGA	https://www.reddit.com/r/Genshin_Impact_Leaks/comments/10hkdlb/dehya_skill_mechanics_and_details_via_nga/	Dehya Skill Mechanics and Details via NGA submitted by u dieorelse to r Genshin Impact Leaks link comments	2023-01-21 06:09:12