投稿時間:2022-08-29 01:15:23 RSSフィード2022-08-29 01:00 分まとめ(22件)

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python	Pythonタグが付けられた新着投稿 - Qiita	太陽組成(宇宙組成)について簡単にまとめてみた	https://qiita.com/yamadasuzaku/items/13f8de5d94b807eef3c8	solarabundance	2022-08-29 00:21:25
python	Pythonタグが付けられた新着投稿 - Qiita	xraylibを google colab で動かす方法	https://qiita.com/yamadasuzaku/items/804ce5ffbd47d765116d	googlecolab	2022-08-29 00:20:41
python	Pythonタグが付けられた新着投稿 - Qiita	xraylib の使い方 (pythonユーザー向け)	https://qiita.com/yamadasuzaku/items/d34996001870d2316de1	xraylib	2022-08-29 00:20:11
golang	Goタグが付けられた新着投稿 - Qiita	小ネタ／oapi-codegen v1.11.0 〜のコード自動生成の方法	https://qiita.com/hmatsu47/items/5da28bf8c1f7165d03e9	configurationerr	2022-08-29 00:53:24
golang	Goタグが付けられた新着投稿 - Qiita	【自己学習】Go言語を学ぶ(8)	https://qiita.com/tetusan/items/722cd29a93007ab57381	ifelse	2022-08-29 00:21:30
Ruby	Railsタグが付けられた新着投稿 - Qiita	Gemのバージョン指定	https://qiita.com/mshkki/items/ffb960116350fc2ef63e	gemfile	2022-08-29 00:51:26
海外TECH	MakeUseOf	How to Prevent Others From Deleting or Adding Printers on Windows	https://www.makeuseof.com/windows-prevent-printer-adding-deleting/	windows	2022-08-28 15:15:14
海外TECH	DEV Community	How React and NextJS can power your next web project	https://dev.to/annabaker/how-react-and-nextjs-can-power-your-next-web-project-439d	How React and NextJS can power your next web projectI have decided to go with React and NextJS and see how they make the perfect combination In the following article I ll go over what makes React and NextJS good choices as well as the advantages they offer  Walk with me while we stroll down the path of knowledge and reach a point of good decision And yes I m not afraid of getting some grease on my elbows React and NextJS A perfect pair for your next web projectReact is a popular JavaScript library that is used for building user interfaces It is declarative efficient and flexible NextJS is a React framework that makes it easy to create server side rendering and static web applications When used together these two frameworks can create web applications that are fast responsive and scalable Some of the benefits of using React and NextJS together include Server side rendering Server side rendering SSR is a technique that can be used to improve the performance of web applications With SSR the HTML and CSS for a web page are rendered on the server before the page is sent to the client This allows the browser to display the page content immediately without having to wait for the JavaScript to be downloaded and executed Static site generation Static site generation SSG is a technique that can be used to create websites that are fast secure and easy to deploy With SSG the entire website is generated at build time rather than dynamically on the server This means that the website can be deployed to a CDN or static hosting service such as Amazon S or Netlify without needing a server or database Code splitting Code splitting is a technique that can be used to improve the performance of web applications by loading only the code that is needed for each page With code splitting the application code is divided into multiple bundles that can be loaded on demand as needed by the user This reduces the amount of code that needs to be downloaded and executed by the browser which can improve performance Prefetching Prefetching is a technique that can be used to improve the performance of web applications by loading resources in advance With prefetching resources such as images or scripts are downloaded before they are needed by the browser This means that they are available immediately when they are needed which can improve performance Fast refresh Fast refresh is a feature of React that allows changes to be made to components without having to reload the entire page This can be very useful when developing web applications as it means that you don t have to constantly refresh your browser after making changes to your code Hot reloading Hot reloading is a feature of React that allows changes to be made to components without losing state information This can be very useful when developing web applications as it means that you don t have to restart your application after making changes to your code NextJS provides an intuitive API NextJS provides an intuitive API which makes it easy to get started with server side rendering and static site generation The API provides methods for loading data from an external API or database creating pages and routes and managing assets such as images and files There s also built in support for TypeScript and Babel which makes it easy to use modern JavaScript features such as JSX and async await Overall NextJS provides everything you need to get started with building modern web applications And remember you can always reference the documentation if you get stuck So let s get started Starting with NextJSCreating an app using NextJS is a simple process First you have to install npx Then go to your desired project location and type npx create next app my app This will create a directory of your new Next js app with the name my app Finally you need to open the index js file that is inside the directory named pages and start coding your website React and NextJS are two powerful tools that can help you build your next web project With a little bit of planning and some elbow grease you can create something amazing	2022-08-28 15:38:03
海外TECH	DEV Community	Product Company vs. Consultancy | UK Global Talent Visa Eligibility	https://dev.to/beetlehope/product-company-vs-consultancy-uk-global-talent-visa-eligibility-5hml	consultancy	2022-08-28 15:33:00
海外TECH	DEV Community	Valuetypes in Solidity	https://dev.to/damkols/valuetypes-in-solidity-o1i	Valuetypes in SoliditySolidity is a smart contract programming language It is most commonly used to write smart contracts for the Ethereum blockchain but can be used to implement smart contracts on any blockchain that uses the Ethereum Virtual Machine EVM Like all other programming languages datatypes in Solidity can be classified into types Values and References Values values simply mean that the datatype stores a value e g boolean stores either true or false References datatypes of type reference do not store a value instead they store a reference to where the actual data is stored e g an Array is a datatype of type reference In this article we ll be looking at Value Datatypes and how to use them in a solidity contract Booleancontract ValueType bool public boo true Here we have a contract named ValueType we will declare all the value datatypes inside this contract In the contract we declare a boolean datatype using the keyword bool this boolean is declared as public so it can be called outside the contract The variable is given the name boo and its value set to true the value of a boolean can either be true or false Unsigned IntegerNext up we ll be looking at the unsigned integer datatype An unsigned integer means the datatype has to be greater than or equal to zero we can not use negative numbers with unsigned integers only zero or positive numbers contract ValueType uint public numU Here uint keyword is used to declare an unsigned integer the variable is declared as public the variable is given the name numU and its value is set to The keyword uint is an alias for to There are different variants of uint with different ranges starting from uint uint etc which goes all the way to uint Among these variations of uint the most common one we will come across often is uint Unsigned integers only support numbers that are greater than zero but what of cases where we need to use a negative number in this case we use integers IntegersNext up let s take a look at integers Integers allow us to use positive and negative numbers in our contract contract ValueType int public numI An integer is declared using the int keyword the variable here is declared to be public the variable is given the name numI and the value set to Similar to unsigned integers the keyword int is also an alias for int There are also different variations of int starting from int int to int AddressAnother value datatype that we will come across a lot in Solidity is type address contract ValueType address public addr xFAedFDFbDfDFEaCceabF An address datatype is declared using the keyword address this variable is made public and the address is given the name addr and we set the value to a random Ethereum wallet address byteThe last value datatype we will be looking at in this article is byte we will encounter this datatype when working with the cryptographic cache function available in solidity called kachek contract ValueType bytes public b x We declare a bytes by using the keyword bytes the variable is made public and given the name b the value here is set to some random bytes ConclusionWe haven t covered all the Valuetypes available in Solidity in this article but these are the most common ones we will come across when writing a Smart contract you can find a full list of Solidity Valuetypes in the documentation Thanks for reading If you enjoyed reading this as much as I enjoyed writing it then Like and Share this with your friends and feel free to connect with me on Twitter ‍	2022-08-28 15:24:22
海外TECH	DEV Community	Multiprocessing in NodeJs	https://dev.to/dhanushnehru/multiprocessing-in-nodejs-531a	Multiprocessing in NodeJsA single instance of Node runs in a single thread To take advantage of multi core systems the user will sometimes want to launch a cluster of Node processes to handle the load The cluster module allows you to easily create a network of processes that all share server ports Code ExampleA single threaded NodeJS server would have the following snippetconst http require http const port function init startHttpServer function startHttpServer var httpsServer http createServer function req res res writeHead res end Hello Viewer httpsServer listen port init The above code will run on a single core in your multi core environmentSo to take advantage of NodeJs process amp to fork our process to increase the software throughput the below changes should be doneconst os require os const http require http const cluster require cluster const port function init if cluster isMaster let numCPUs os cpus length console log Num of CPU numCPUs for let idx idx lt numCPUs idx cluster fork else startHttpServer function startHttpServer var httpsServer http createServer function req res res writeHead res end Hello Viewer httpsServer listen port init The cluster amp os modules will help us achieve this The above code gives us information about how much core our environment has In my system the Num of CPU is This would be different based on your system amp environment One main thing to notice is that the current process is the master because only the master can fork workers Master amp Worker CommunicationsWhat we have understood untill this is the cluster module is taking our processes and spawning it again as a separate process in the OS There is no memory sharing between workers amp master In order to establish this we need to establish a communication messageconst os require os const http require http const cluster require cluster const port function init if cluster isMaster let numCPUs os cpus length console log Num of CPU numCPUs for let idx idx lt numCPUs idx let worker cluster fork worker on message function msg console log Worker msg worker served a msg cmd worker send Good work else startHttpServer function startHttpServer process on message function msg console log msg var httpsServer http createServer function req res res writeHead res end Hello Viewer process send worker cluster worker id cmd request httpsServer listen port init Here we have listeners for both the workers and the master When the worker receives a request it sends a message to the master which on receiving is printing some logs on the console and is returning a message to the worker that the worker also prints to the console Creating a multi process NodeJS server is not difficult to do and can vertically scale your software improving its throughput It is a very important part of using your hardware efficiently and scaling your applications Thanks for reading ️Any other inputs or recommendations feel free to share below Follow me Twitter Github Instagram	2022-08-28 15:19:00
海外TECH	Engadget	Anker charging gear is up to 36 percent off today only	https://www.engadget.com/anker-amazon-weekend-sale-154328834.html?src=rss	Anker charging gear is up to percent off today onlyFor today only Amazon has discounted a handful of Anker chargers and Soundcore speakers Starting things off there s Anker s Charger It s a W power adapter with a pair of USB C ports capable of charging two devices simultaneously The company offers the in four colors Glacier Blue Cool Lavender Black Ice and Arctic White The blue model is off making it at the moment Engadget hasn t had a chance to check out the but it has a five star rating on more than reviews One thing to note is that it doesn t come with a cable Thankfully included in today s sale is Anker s foot Nylon USB C to USB C cable At the moment it s percent off Buy Anker USB C charger at Amazon Buy Anker PowerCore Fusion at Amazon For something you can take on the go consider the PowerCore Fusion It s a W adapter that doubles as a mAh power pack The Fusion features both a USB C and USB A port with the former delivering W charging whether you re using the adapter as a wall charger or battery pack Based on the Amazon rating the Fusion is another Anker product that people seem to like It s currently down from Buy Anker PowerWave Stand at Amazon Buy Anker USB C cable at Amazon If you re looking for a wireless charger Amazon has also discounted Anker s PowerWave Magentic in Stand The nifty thing about the PowerWave is that it can charge your phone and a pair of wireless earbuds at the same time though you ll need a Qi compatible case for the latter The PowerWave is currently off from its usual price Note that you ll need to buy a compatible power adapter separately Follow EngadgetDeals on Twitter and subscribe to the Engadget Deals newsletter for the latest tech deals and buying advice	2022-08-28 15:43:28
海外科学	NYT > Science	Cloud Wars: Mideast Rivalries Rise Along a New Front	https://www.nytimes.com/2022/08/28/world/middleeast/cloud-seeding-mideast-water-emirates.html	Cloud Wars Mideast Rivalries Rise Along a New FrontAs climate change makes the region hotter and drier the U A E is leading the effort to squeeze more rain out of the clouds and other countries are rushing to keep up	2022-08-28 15:11:40
海外ニュース	Japan Times latest articles	Chinese province bordering Beijing expands COVID-19 lockdown	https://www.japantimes.co.jp/news/2022/08/29/asia-pacific/china-expands-covid-19-lockdown/	Chinese province bordering Beijing expands COVID lockdownShijiazhuang the provincial capital of China s Hebei province that borders Beijing said mass testing will be done on residents in in four major downtown districts	2022-08-29 00:02:55
ニュース	BBC News - Home	Pakistan floods: Appeals for aid as 119 more die in a day	https://www.bbc.co.uk/news/world-asia-62704004?at_medium=RSS&at_campaign=KARANGA	floods	2022-08-28 15:29:53
ニュース	BBC News - Home	Dundee Utd 0-9 Celtic: Kyogo & Abada net hat-tricks in incredible away win	https://www.bbc.co.uk/sport/football/62621464?at_medium=RSS&at_campaign=KARANGA	Dundee Utd Celtic Kyogo amp Abada net hat tricks in incredible away winCeltic stroll to an incredible record breaking away league victory by eviscerating beleaguered Dundee United as they climbed back top of the Scottish Premiership	2022-08-28 15:17:13
ニュース	BBC News - Home	Talks continue in bid to end bin strikes	https://www.bbc.co.uk/news/uk-scotland-62705762?at_medium=RSS&at_campaign=KARANGA	strikesunions	2022-08-28 15:42:56
ニュース	BBC News - Home	Wolves 1-1 Newcastle Utd: Allan Saint-Maximin volley earns Newcastle a point	https://www.bbc.co.uk/sport/football/62621480?at_medium=RSS&at_campaign=KARANGA	wolves	2022-08-28 15:29:48
ニュース	BBC News - Home	Aston Villa 0-1 West Ham: Pablo Fornals gives Hammers first win of season	https://www.bbc.co.uk/sport/football/62621482?at_medium=RSS&at_campaign=KARANGA	Aston Villa West Ham Pablo Fornals gives Hammers first win of seasonWest Ham earn their first win of the season as Pablo Fornals deflected second half strike gives them victory over Aston Villa at Villa Park	2022-08-28 15:10:16
サブカルネタ	ラーブロ	8/28の更新は遅れています。	http://ra-blog.net/modules/rssc/single_feed.php?fid=202268	更新	2022-08-28 16:12:00
北海道	北海道新聞	フェルスタッペンが３連勝　Ｆ１ベルギーＧＰ、角田１３位	https://www.hokkaido-np.co.jp/article/723098/	連勝	2022-08-29 00:24:00
北海道	北海道新聞	オランダでトラック突入６人死亡　週末バーベキュー会場	https://www.hokkaido-np.co.jp/article/723094/	週末	2022-08-29 00:04:00