投稿時間:2022-03-12 01:38:03 RSSフィード2022-03-12 01:00 分まとめ(44件)

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python	Pythonタグが付けられた新着投稿 - Qiita	UbuntuにPython3.7インストール (without sudo)	https://qiita.com/ss8/items/33ec8d0119fce1a30b4c		2022-03-12 00:33:47
python	Pythonタグが付けられた新着投稿 - Qiita	色情報の特徴量をRGBで表現する	https://qiita.com/teruto725/items/ca9dc19c533cb56d4639	これを特徴量としてベクトル変換する際、以下のような方法が考えられる。	2022-03-12 00:19:41
Ruby	Rubyタグが付けられた新着投稿 - Qiita	実務未経験者によるRubySilver対策	https://qiita.com/m-ito27/items/2245a51dedbb57b3aec0	Ruby技術者認定試験合格教本基本問題、模擬問題部分公式模擬問題集REx※難易度高めいくつか回答に誤りあり※これは毎回問題が変わるので、やればやるほど色々なパターンを覚えると思います。	2022-03-12 00:43:10
Linux	Ubuntuタグが付けられた新着投稿 - Qiita	UbuntuにPython3.7インストール (without sudo)	https://qiita.com/ss8/items/33ec8d0119fce1a30b4c		2022-03-12 00:33:47
golang	Goタグが付けられた新着投稿 - Qiita	マイコン操りたいのでtinygo環境構築とgoroutineしてみた	https://qiita.com/NKDM/items/f24ca8b94549edc69615	マイコン操りたいのでtinygo環境構築とgoroutineしてみたあらすじ会社で使用している機器のGPIO機能をテストしようと思ったので環境構築して使ってみたの巻。	2022-03-12 00:59:13
技術ブログ	Developers.IO	AWS CDKでLambdaバージョンとエイリアスをしてみた。	https://dev.classmethod.jp/articles/lambda-versioning-and-alias-using-aws-cdk/	awscdk	2022-03-11 15:21:47
技術ブログ	Developers.IO	従業員エンゲージメントサーベイの結果は具体的な問題を抽象化したもの。どう扱えばよいか？	https://dev.classmethod.jp/articles/ex-survey-concrete-and-abstract/	重要	2022-03-11 15:08:46
海外TECH	Ars Technica	Microsoft Pluton doesn’t ‘align’ with Dell’s hardware security strategy	https://arstechnica.com/?p=1840351	intel	2022-03-11 15:14:23
海外TECH	MakeUseOf	How Do I Set a Static IP Address on Raspberry Pi?	https://www.makeuseof.com/raspberry-pi-set-static-ip/	address	2022-03-11 15:34:48
海外TECH	MakeUseOf	7 Tips to Promote Your NFT Art	https://www.makeuseof.com/nft-art-promotion-tips/	arthere	2022-03-11 15:30:15
海外TECH	MakeUseOf	Considering Canceling Netflix? 7 Questions to Help You Decide	https://www.makeuseof.com/canceling-netflix-questions-to-consider/	canceling	2022-03-11 15:15:14
海外TECH	MakeUseOf	How to Fix the 0x8007012a Install Error in Windows 11	https://www.makeuseof.com/fix-0x8007012a-install-error-windows-11/	error	2022-03-11 15:15:13
海外TECH	DEV Community	CSS Basics: Creating Inset Borders with CSS	https://dev.to/smpnjn/css-basics-creating-inset-borders-with-css-2dol	CSS Basics Creating Inset Borders with CSSSometimes when creating inset borders we want to set them at different distances from the edge of the element In CSS there are a number of ways to do this which can all be useful depending on the situation you find yourself in Let s look at the different ways to create inset borders with CSS Option Using inset bordersThe easiest way to make an inset border in CSS with the the border property button border px inset rgba Option Using outlinesIf that doesn t work we can also use outlines We can also set an offset for the outline so that it starts within the element This is easy to do it only requires two lines of codebutton outline px solid rgba outline offset px Positives NegativesSupports rounded corners Easy to implement Interferes with usability which outline is ideally supposed to be used for Option Pseudo ElementsIn some cases the easiest way to do the job pseudo elements look a bit like this button position relative button before content position absolute top px left px border px solid rgba border radius px width calc px height calc px z index How this worksFirst a pseudo element is a fake element made by CSS which is created within any HTML tag There are two before and after so any HTML element can have two pseudo elements Above we created one within every button element It s position is absolute so it sits on top of the button instead of within it It moves according to where the button is as the button has its position set to relative We then position it px from the top and left of the button Next we give it a border and a border radius so it has curved edges We set the width and height of the element to the width or height of the element minus the distance we moved it taking into account we are moving it inset by px as we moved it to the left by px and adding the border width so px px px Finally we set the z index the vertical order of elements so the pseudo element sits atop the button giving us our nice outline Positives NegativesUses up one of your two precious pseudo elements ️Is a standalone element so we can style it as we see fit Supports rounded corners Option Box shadow inset bordersInstead of using psuedo elements in some cases we can use box shadow button box shadow inset px ed inset px rgb In the above example we put one inset box shadow which is inset px more which is our border color On top of that we place another box shadow which is the color of the original button This gives the illusion of an inset border Positives NegativesOnly really works with solid colors non animated surfaces Doesn t use pseudo elementsSupports rounded corners Doesn t affect other CSS you can still add more box shadow layers if you need to	2022-03-11 15:34:31
海外TECH	DEV Community	Difference between forwarding and routing	https://dev.to/kodblems/difference-between-forwarding-and-routing-3d02	Difference between forwarding and routingMore extensive IT networks are divided into smaller ones that have connections Multiple intermediate stations may be required between two nodes for a transmission Routing is the process of delivering your data from one node to another Routing Routing is used in a system of at least one network none of these networks is isolated If a leased line must be established for example in the phone system routing is used to select the nodes between you and the person you are talking to If data packets are to be exchanged routing means transferring these packets from sender to recipient Different packets can be routed differently even if they are considered part of the same communication at a higher level In both types of networks routing refers to the totality of all decisions about the connection of individual nodesーlow forwarding to the decision regarding the individual nodes handled by these node data packets Forwarding Both are used at the network layer to send data over different routes In the forwarding network layer function data or packets are transferred from one incoming link and then the other outgoing link is reached the main thing is that all these packet transfers are done within a single router When any packet comes from the router s inbound link it must transfer the packet to its correct outbound link On the other hand the routing function sends the packets from one PC to another PC within two different routers It means that the routing occurs between the two routers in the network their combined communication through routing protocols decides the routes or paths that the packets acquire on their journey from the origin to the destination It is the responsibility of the network layer to decide the appropriate route for the packet to send it to the desired receiver The network layer uses the routing algorithm to select the correct route to send the data The routing algorithm is responsible for choosing the best route among many routes It means the most precise shortest and most unobstructed path	2022-03-11 15:21:36
海外TECH	DEV Community	Under-the-hood of GraphQL DataLoader	https://dev.to/craigtaub/under-the-hood-of-graphql-dataloader-13a8	Under the hood of GraphQL DataLoaderIn recent years GraphQL has really taken off as a pattern library type system It offers much which REST does not and its standardization and flexibility has really helped in its adoption I have an article focused on digging deeper into GraphQL here so today we will focus on another tool in the GraphQL ecosystem one that is very important and interesting in how it assists applications that tool is the DataLoader This is part of my under the hood of series React hooksWeb bundlers e g Webpack Type systems e g TypeScript GraphQLGit version controlSource mapsDockerNPMTest runners e g Mocha VSCode auto formatters e g Prettier ApolloThe article today will be broken down into parts OverviewBatchingCachingBuilding our own GraphQL DataLoader OverviewThe NodeJS repository for GraphQL s DataLoader is found at however it can be found in many different language implementations It can be used as part of your applications data fetching layer and its basic job is to reduce requests to backends by means BatchingCachingIt utilizes different logic and functionality to perform the above efficiently The first question is what does GraphQL have to do with this It pairs nicely with GraphQL as GraphQL has fields which are designed to be stand alone functions resolvers and it is very easy to share a class instance via the context The class instance would be our instance of DataLoader The natural pairing of DataLoader and GraphQL has produced high success rates some examples have seen database queries reduced down to or BatchingBatching is the primary feature of DataLoader you must pass the library a batch function to detail how to process the batch Within a single tick of the event loop DataLoader gathers all individual loads then calls the batch loading function with all requested keys VS your ORMIts important to note DataLoader does not optimize the queries itself you can look to an ORM for help there For example Objection JS has logic to avoid N selects by utilizing where in queries Batch functionThis is the function given to the library when you create a new instanceconst ourInstance new DataLoader keys gt myBatchFunction keys The basic idea is that you check your cache first for a given key if it exists return that value else hit the data source e g database It passes in an array of keys but there is a constraint that the returned array size must match the keys coming in the returned array indexes must match the keys coming inThere is a sound reason for that limitation and it s related to the implementation it is covered in part below Its worth highlighting that keys are suited to table column ID s so it stands to reason that having a database table for each entity in your data model would fit this mechanism well CachingDataLoader uses a simple in memory memoization cache You can swap the memory store for something else e g SQL lite Caching pairs really well with the Batching because the batch can ensure the requested data has already been pulled from the database the cache can be utilized to retrieve from there We will go over this more in the next section Building our own GraphQL DataloaderIn this section we will focus on the and save for another time Hopefully it will provide enough context on how caching is utilized Within a single tick of the event loop DataLoader gathers all individual loads then calls the batch loading function with all requested keys You might be wondering how it does this so let s look at the most simple example const run async gt const keys const batchFunction keys gt bad point called with console log keys keys const load async id gt keys push id process nextTick gt batchFunction keys bad point promise not connected to batch function return Promise resolve id id const a await load const b await load console log a a id console log b b id run This calls our batch function twice both times with both keys The order of events is this call load asynchronously with id call load asynchronously with id async load store key in the global keys arrayschedule a node process to on the next tick run our batchFunction with those keysReturn a resolved promise with the id async load store key in the global keys arrayschedule a node process to on the next tick run our batchFunction with those keysReturn a resolved promise with the id The first scheduled process runs with both ids and in the keys arrayThe second scheduled process runs with both ids and in the keys array So here you can see the basic mechanism of how batching works Good Runs our batch function with both keys this will mean we can cache the database response and next time those keys are included only utilize cacheBad Unnecessarily calling the batch function with the same keys unnecessarily running the code even if it is hitting the cache load does not return anything useful its a completely isolated resolved promise The below example looks to improve on that let resolvedPromise let batchFunction let batch const dispatchBatch gt batch hasDispatched true const batchPromise batchFunction batch keys batchPromise then values gt for var i i lt batch callbacks length i var value values i resolve promise callback batch callbacks i resolve value const batchScheduleFn cb gt add more logic if scheduling process nextTick cb const getCurrentBatch gt hasDispatched only needed if using a nd tick this example isnt if batch amp amp batch hasDispatched return batch const newBatch hasDispatched false keys callbacks batch newBatch batchScheduleFn gt dispatchBatch return newBatch const load async id gt const localBatch getCurrentBatch localBatch keys push id add promise callback to batch const promise new Promise resolve reject gt localBatch callbacks push resolve reject return promise async function threadTwo const user await load console log threadTwo user user id async function threadOne const user await load console log threadOne user user id const run async gt make async batchFunction async keys gt console log keys keys keys return keys map key gt id key threadOne threadTwo run It introduces batches which can be sheduled this is exactly how DataLoader manages it here The order of events is this call threadOne call load async with id call threadTwo call load async with id async load get the current batchbatch is currently undefined so a newBatch is created we schedule a dispatch by calling dispatchBatch inside our scheduler batchScheduleFn this adds dispatchBatch callback to the nextTick lastly we return the batchwe add the id to the keys array on the current batchwe create a new promise add the reject and resolve to our current batch callbacks so the list index is important lastly we return the new promoseasync load get current batchbatch currently exists and has not been dispatched so we return thatas above we add the id and reject resolve to the current batchas well as return the promiseprocess nextTickthe tick runs dispatchBatchcall our batchFunction with the current batches keysbatchFunction returns a promisewhen that promise resolves then it returns an array of our keyswe iterate over our batch callbacks for each callback we find the associated batchFunction key value this is why the batch function response indexes are so importantresolve the callback with that valueawait load resolvesreturning object id await load resolvesreturning object id This calls the batch function once with both keys it returns correct values from batch function dealing with both bad points from the first example Thanks so much for reading I learnt a huge amount about DataLoader and GraphQL from this research and I hope it was useful for you You can find the repository for all this code here Thanks Craig	2022-03-11 15:20:46
海外TECH	DEV Community	Hiding promoted tweets and ads - why I started BlockZilla	https://dev.to/stanislav_dim/hiding-promoted-tweets-and-ads-why-i-started-blockzilla-18j	Hiding promoted tweets and ads why I started BlockZillaA couple of years ago I quit Facebook because of the increasing number of ads and sponsored content The ads plague has now come to Twitter and Reddit the two other social platforms I enjoy At this point I was so sick and tired of ads and decided that there has to be a way to hide every bit of sponsored content Although you can block and hide ads one by one it is not something I wanted to spend my time on so my team and I began looking for a way to automate it I was sure that I was not the only person frustrated with all the promoted tweets and ads I did my research and saw a lot of people complaining on Twitter LinkedIn Reddit and Facebook So it was a no brainer for us to create BlockZilla and help others hide sponsored content from their feeds I ll be happy to hear your thoughts and how you deal with all the promoted content these days	2022-03-11 15:19:58
海外TECH	DEV Community	Does steam tell you if someone blocked you	https://dev.to/kodblems/does-steam-tell-you-if-someone-blocked-you-26b9	Does steam tell you if someone blocked youDoes Steam tell you if someone blocked you No Steam doesn t notify you directly if someone blocked you but you can check it manually by going to their public profile If you can see it but can t add or send a friend s request then they have probably blocked you What is Steam It is a video game company created by Valve Software founded by the same owner of Steam Gabe Newell If you purchase its products through a digital platform and download it it counts as a digital game It helps avoid contamination costs and makes the game acquisition process easier for the user How To Block Someone On Steam Here are the methods to block someone on Steam Android and Windows For Android To block someone go to Steam Next go to the menu by clicking on the three sticks icon in the corner of the screen You must go to the friends list For this go to the You and Friends tab and then select Friends from the list Click on the friend you want to block when you are on your friends list When you are in this friend s profile click on the three dot icon at the beginning of the profile and select the item Block all communications in the expanded menu Now confirm the lock by clicking the green button in the middle of the screen Yes lock them It is perfect You have successfully restricted access to this user now you can block people you don t need on Steam For Windows Go to the Steam website then click over your nickname in the centre of the Steam window and then click on the Friends tab Select the user that you want to block and click on it From the top right of a user profile click the tab with three dots Select the Block all communications item in the drop down menu to block the Steam user Now select Yes lock them to confirm the lock in the window that appears It s fine Now you know how to block a user on Steam Does Steam tell you if someone blocked you When you are blocked on Steam you cannot access the profile or UGC of that character If that character has blocked you they will show you unavailable in your friends list However if you go to the Friends tab within the user and he s playing the game you ll notice that he s online If anyone removes you from their friends list you won t be able to contact them on Steam At the same time you won t be able to see any stuff they ve placed as private or only your friends will be able to see it You can t contact them in any of the following methods if you ve prohibited communications Making comments on the profile or community items Using Steam Chat to send messages Sending or adding invites to friends or groups The person s online status is not visible yet the user can be seen playing a game As you can see figuring out how to tell if someone on Steam has blocked you is simple Hope you enjoyed the article like and comment to get more	2022-03-11 15:19:55
海外TECH	DEV Community	Smart Contract Development Guide for Business Owners	https://dev.to/duomly/smart-contract-development-guide-for-business-owners-2jpb	Smart Contract Development Guide for Business OwnersThis article was originally published at As a business owner you may have heard of the term smart contract and wondered what it is and how it could benefit your business Smart contracts are digital contracts that use blockchain technology to automate the negotiation and execution of transactions If you d like to learn more about smart contract development please read our guide on how to get started In it we ll teach you the basics of smart contract development and how to apply it to your business What is Smart Contract and why should you care about it A smart contract is a digital agreement between two or more parties which stores terms and conditions and the consequences of breaking it They are enforced by computers running the code to check what has happened and then executing agreed upon rules Smart contracts make transactions secure transparent and auditable since no third party is involved in modifying the contract according to its own needs As the technology is decentralized it also removes all sorts of fraud and interference from outside parties with transactions As a business owner you may now wonder how smart contracts can actually help your company Read our article about Smart Contract to learn more about this new technology and how it could benefit your business What is Smart Contract How can Smart Contract be used in your business There are three main reasons business owners should consider smart contract technology First smart contracts can automate transactions between your company and clients These could be anything from financial operations to even more sophisticated actions such as putting delivery or shipment information into the agreement to execute it automatically upon receiving goods Secondly these self executable contracts are secure because they can t be modified Even if someone could break into the system the terms and conditions of an agreement stay unchanged Finally smart contract technology saves time since there is no need to pay third parties for their services Moreover it s faster because everything is done automatically by computers running the code without any delays Why should you invest in Smart Contract development now rather than later Despite all the benefits smart contracts offer many business owners are still reluctant to embrace them They claim the smart contract is a new technology and there s no need to learn more about it However not learning about this technology now could be harmful when businesses that implement smart contract development will gain an edge over their competitors One of the main reasons to embrace smart contract development is that it s the future With its benefits and great potential smart contract technology is here to stay Not only will your competitors start using smart contracts going forward but you ll also be at a disadvantage because customers could decide not to work with a company that doesn t offer this new technology In conclusion smart contracts are an incredibly useful tool that could improve your business significantly To be ahead of the curve and beat your competitors you need to start learning more about this amazing technology as soon as possible Technologies used in Smart Contract developmentSeveral technologies are usually used in smart contract development First blockchain is a decentralized digital ledger that records all transactions made over the network  Second cryptography is the method of secure communication used to send messages between different parties  Third it s good to know Ethereum Blockchain Since smart contracts are written in Solidity knowing this programming language is extremely important   Another factor that influences the job of a smart contract developer is knowing how to work with different tools like web js or Ethers js These are open source libraries that help developers interact with the Ethereum blockchain How much do Smart Contract developers make Full Time Smart Contract developers make an average annual salary of However it can be as low as just under or as high as around per year This highly depends on the industry and country you re working in  For example a smart contract developer that works for a healthcare company could make less than someone who works for a financial services company Smart contract developers can either work as full time employees or freelancers and get paid according to their skills and expertise Freelance smart contract developers can charge anywhere from to the best paid make much more than that per hour depending on their skills and experience  Some developers may also charge a fixed amount for a project rather than by the hour  It s important to remember that freelance rates can vary greatly Hence it s always best to get quotes from a few different developers before deciding How much does it cost to create a Smart Contract project The price to develop a smart contract project can vary greatly depending on many factors For example companies that offer smart contract development services can have more resources and thus be able to complete more projects Moreover the number of features offered by the application also influences the final price  Additionally some developers may include extra fees for additional features while others may not Before selecting a company to work with you should always get in touch and ask how much it will cost to develop your particular project  A smart contract developer could charge anything from to or more depending on what s included in the service Is it hard to find Smart Contract developers Since the demand for smart contract developers has grown exponentially it s becoming harder to find one  Companies are constantly looking for professionals with specific skills and knowledge in blockchain technology cryptography or Solidity code  Due to this high demand more companies are trying to hire people that fit into this niche However not everyone has the necessary knowledge and skills to develop smart contracts How do I find Smart Contract developers Finding a smart contract developer may be challenging Still it s very important to do your research and see what others say about them  For example you could try using popular services like Upwork or Fiverr that have thousands of different professionals from all over the world available for hire  In addition to these global platforms you could also use local services focused on the country you re operating in Another option is to work with a recruitment agency which can help you find someone based on your needs and budget Don t forget to ask for references and speak to people that have used this professional s services before  In addition a smart contract developer should always be willing to share a portfolio with previous projects they ve developed in the past  This information is essential and can help you make an informed decision when hiring someone for your project If you need help finding or hiring a smart contract developer please contact us We have a team of experts who can help you get your project up and running www labs duomly comThank you for reading Radek from Duomly	2022-03-11 15:17:02
海外TECH	DEV Community	Power of destructuring	https://dev.to/rahulrajrd/power-of-destructuring-44em	Power of destructuringDestructuring is a blessing to JavaScript and TypeScript developers Destructuring works for both Object amp Arrays Object DestructuringConsider the below object const myObject userFirstName Rahul userLastName Raj How will you fetch the firstName and lastName in separate variables const userFirstName this myObject userFirstName const userLastName this myObject userLastName console log userFirstName Rahulconsole log userLastName RajORYou can use the destructuring const userFirstName userLastName this myObject console log userFirstName Rahulconsole log userLastName RajThis simple liner will get you your values in the keyName variable You don t like the lengthy variable name Change it to your desired names by giving an alias name const userFirstName fN userLastName lN this myObject console log fN Rahulconsole log userFirstName Will through errorSo you have learnt almost everything about object destructuring Array DestructuringArray destructuring is similar to Object destructuring but it is used when we know the number of elements or need the initial element to work with const userDetails string Rahul dev to rahulrajrd const name website username noItemCheck userDetails split console log name Rahul console log website dev to console log username rahulrajrd console log noItemCheck undefinedImportant Note If the returned value is less than the assigned value as shown above the value will be undefined If you like the post follow me for more ltag user id follow action button background color b important color ffffff important border color b important Rahul RajFollow I am a developer who is trying to improve myself day by day	2022-03-11 15:15:49
海外TECH	DEV Community	Paracetamol.js💊| #76: Explica este código JavaScript	https://dev.to/duxtech/paracetamoljs-76-explica-este-codigo-javascript-2p4i	Paracetamol js Explica este código JavaScript Explica este código JavaScriptconst arr console log Array isArray arr A trueB falseC D ReferenceErrorRespuesta en el primer comentario	2022-03-11 15:15:08
海外TECH	DEV Community	What Is Blockchain - Guide for Business Owners	https://dev.to/duomly/what-is-blockchain-guide-for-business-owners-5dna	What Is Blockchain Guide for Business OwnersThis article was originally published at If you re a business owner you ve probably heard the term blockchain floating around lately But what is blockchain exactly And what does it mean for your business In short blockchain is a distributed database that allows for secure transparent and tamper proof transactions between two or more parties This transparency and security have caught the attention of businesses and investors alike But what does that mean for your business specifically In this guide we ll explore what blockchain is how it works and what benefits it could offer your business We ll also look at some potential applications of blockchain technology in the business world So whether you re just starting to learn about blockchain or you re ready to start implementing it what you ll find below is what you need to know What is blockchain A blockchain is a data structure that makes it possible to create a digital ledger of transactions and share it among a distributed network of computers Each transaction in the ledger contains two parts a transaction record or what s called a block and what s called a blockchain The blockchain allows digital information to be added but not edited or deleted And that ability gives the technology some exciting characteristics Helps create a time stamped historical record of all transactionsProvides a public ledger to track and verify ownership and titlingPrevents data tamperingMakes it possible for multiple parties to interact securely without relying on a third party intermediary How does blockchain work To understand what makes blockchain technology what it is let s look at how blockchain works Here are the basics Cryptocurrency transactions are amendments or new information to the blockchain  When someone wants to make a transaction they use what s called a private key that lets that person approve a transaction or exchange of value without anyone else knowing what it is that they re approving An additional level of security is added by what are called miners  Miners are people who have agreed to devote some of their computer s processing power to what s called verifying transactions With each transaction added to the blockchain the miners verify and time stamp it Once a miner adds a new block of transactions to the blockchain they use what s called an open key or what s known as a private key to attach what s called a hash which is like a code or fingerprint of all the information contained in that block of transactions The blockchain is what makes it possible to create an un hackable ledger where every transaction and exchange of value between two parties can be tracked and made visible to everyone instead of relying on an intermediary And what this gives blockchain technology are some pretty unique properties that other transaction technologies don t have including Reduced counterparty risk because it s decentralized So you don t have to rely on an intermediary to approve the transaction or be responsible for its safety and security Transparency so you can verify transactions quickly and easily A streamlined method of recording transactions and exchanging value It also has a lot of potential uses outside what s traditionally been called cryptocurrencies Blockchain technology shows a lot of promise in security transparency and efficiency benefits that could potentially help make business operations more effective from order to fulfillment For this reason blockchain is what many people in the business world call the second generation of the internet and what others argue could be what s described as a fundamental way to do what we ve always done and that is trade and exchange value How can blockchain benefit your business Let s look at how blockchain technology might be able to provide benefits for your business  So if you re ready to dive in and get a closer look at what blockchain has to offer let s take a look at three ways it could benefit your business Transparency and efficiency  What blockchain can make happen In what s been called the sharing economy peer to peer exchange is what s driving a new way to consume goods and services But what makes it possible also introduces what some people call trust gaps when you re relying on what is called middlemen who act as third party intermediaries With blockchain what is called distributed ledger technology what s possible is a new way to make the peer to peer exchange more transparent and secure Decentralized trust  When you rely on what are called third party intermediaries like banks or online marketplaces what you get in return is centralized trust But what blockchain can do is give you what s called decentralized trust so you don t have to rely on what are called third party intermediaries What this means for your business  If what you re looking for is what s described as a way to reduce the risk and increase the speed of value transfer what blockchain can potentially do is give you what s called a more efficient supply chain that prevents what is called fraudulent transactions and makes what s described as counterfeiting impossible Security  When it comes to what blockchain technology could provide one of the most valuable benefits is what s been described as the elimination of what is called counterparty risk which occurs when what would happen if the other party in a transaction doesn t live up to their obligations How can blockchain be used in your business Some of the most popular use cases for blockchain technology in business include  Supply chain management  Blockchain keeps track of products as they move through the supply chain This makes the process more transparent which reduces costs and risks Peer to peer financial services  What blockchain can do is get rid of the need for third party intermediaries This happens because it makes transactions quicker cheaper and more secure Smart contracts  Blockchain creates a secure way for people to agree to things together This makes it easier to enforce agreements because they happen automatically Cryptocurrency and financial transactions  Blockchain removes the need for third party intermediaries from financial transactions This makes transactions faster makes fraudulent activities more difficult and gives you a new way to manage digital assets File sharing and data management  Blockchain technology provides a way to store data securely and distribute files If there was a breach in the data blockchain technology would help fix the problem Identity verification  Blockchain creates a way for people to verify their identity without third party intermediaries It also includes ideas like the blockchain taking over and what drives it and what is being used in business Voting  Blockchain technology can help keep track of voting securely This way it is ensured that votes are submitted safely and that the records are accurate How to start using blockchain If you re looking to start using blockchain in your business there are a few things you need to know  First you need to understand what blockchain is and what it can do for your business  Then you need to find a way to implement it into your business This can be done by finding a blockchain provider or software that can help you get started  Finally you need to learn how to use it and its benefits to your company  If you re looking for help getting started with blockchain technology or if you want to know more about how it can benefit your business please contact us We would be happy to answer any questions and help you get started www labs duomly comThank you for reading Radek from Duomly	2022-03-11 15:11:22
海外TECH	DEV Community	What Is Smart Contract - Guide for Business Owners	https://dev.to/duomly/what-is-smart-contract-guide-for-business-owners-55gj	What Is Smart Contract Guide for Business OwnersThis article was originally published at When most people think about contracts they think about the mundane paperwork task that needs to be completed for two or more parties to exchange goods or services However what if there was a way to streamline this process and make it more efficient Thanks to blockchain technology and smart contracts this is now a possibility In this guide you will learn what smart contracts are and how they can benefit your business You will also learn about the different types of smart contracts that are available and how to create and execute them So whether you are just starting out in business or looking for ways to improve your current operations read on for all the information you need What is a smart contract In a nutshell a smart contract is a protocol that facilitates verifies or enforces the negotiation or performance of a contract Smart contracts run on blockchain technology and are what make decentralized applications possible However they can also replace legally binding contracts in many instances where two parties interact What makes smart contracts so appealing is that they are more secure than what we have today since there is no need for external enforcement The keys to executing a smart contract are blockchain and cryptocurrency These two elements make it possible to avoid the risk of relying on another party or one s own ethics to enforce what was agreed upon How do smart contracts work Put simply smart contracts are pieces of software that contain rules and regulations for negotiating the terms of a contract These rules are what makeup what is called code in programming When two parties use blockchain technology to interact with these smart contracts they help to verify if what was expected has been satisfied For example if one person agrees to buy a product from another person for and then send that money over via cryptocurrency the smart contract will be executed Once this happens what was promised is automatically transferred into what s called digital code What happens next depends on what type of smart contract has been created For example what if one person fails to send over the agreed upon funds Then the other party has the option of taking what was initially offered or nothing at all So there is no need for having third parties involved in disputes since what s agreed upon happens automatically What are the benefits of using smart contracts There are many benefits of using smart contracts and some of the most notable ones are as follows Increased efficiency  Since there is no need for paperwork or external enforcement smart contracts can help to speed up the contract negotiation and execution process This can be a huge boon for businesses that need to get things done quickly and efficiently Reduced costs  Smart contracts can also help reduce costs since there is no need for lawyers or other third party professionals Increased security  As mentioned earlier smart contracts are more secure than traditional contracts since there is no need for trust or reliance on another party This can be especially beneficial for businesses that deal with sensitive data Smart contracts are what make a blockchain possible which is a decentralized and distributed ledger system This means that transactions cannot be altered later so what s agreed upon is what will be executed Saves time and money  Another way smart contracts save both time and money is by helping to avoid what is known as a trust abyss This refers to the need for having another party or multiple parties involved in the process Since blockchain has made it possible for people to interact with one another directly smart contracts can help eliminate time consuming and sometimes complicated processes No need for expensive third parties  Since smart contracts are what makes decentralized applications possible it means that there is no need for third parties This can be a huge benefit for businesses that don t have the money or resources to hire somebody else to do what s required Transactions are automatic once what was promised is fulfilled  Since what s agreed upon is what happens after a certain set of terms has been met smart contracts can help make transactions automatic What are some of the possible uses of smart contracts Smart contracts can be used for several different things and what they re programmed to do depends on what types of rules have been made by those involved in the process For example one type is called an if then contract This means what happens if a certain set of conditions are met Since what these smart contracts can do is limited only by what they re programmed to do there are many possible uses for them Just some of what s possible includes Employee compensation  One way that smart contracts can be used is to automate how employees receive what they re owed When what was promised is fulfilled the smart contract can send what s owed around without any oversight or intervention from a third party Automated auctions  Making what happens next automatic has also made it possible for online auctions to become much more convenient This means that transactions can be executed quickly and securely which increases what are often huge gains for what s sold Holding custody of digital assets  Smart contracts can help to manage what is called digital assets which includes what has cryptographically been registered along with what they represent This means that what is owned by another party can be controlled via smart contracts so what s entrusted in the process is kept safe and what s held isn t lost Deed management  Smart contracts also make what is known as tokenization possible which means that what has been tokenized can be what is exchanged via smart contracts This means that what is held by one party in the process can be what they own without what s done on their part  Automated voting  Another way smart contracts can be used is for what s known as voting which means verifying what has been conducted securely What this means is that what is voted on automatically executes the results of the vote so another party doesn t question or undertake what happened in it What are the different types of smart contracts There are three main types of smart contracts that you need to know about Crowdfunding Contracts  These smart contracts help individuals or organizations raise funds through cryptocurrencies making them so appealing for crowdfunding efforts With these automated contracts what makes it possible for individuals to contribute money is what s known as an ERC token on the Ethereum blockchain Programmed Contracts  This smart contract type provides what is needed for businesses or individuals to exchange money shares property or anything of value in a transparent way Programmed contracts make decentralized applications possible since what s needed are known as decentralized apps Multi Signature Contracts  This type of smart contract enables what is known as multi signature wallets which make it possible for what will happen to cryptocurrency or other digital assets to be controlled by more than one person What are some industries that could benefit from using smart contracts There are a number of different industries that can benefit from what smart contracts have to offer  Here s what some of them are Real estate  Since what makes a blockchain possible is what is known as immutable it means that transactions cannot be altered This is what happens with real estate since what s been agreed upon is what will be executed Architecture  This industry can benefit from smart contracts since what makes them possible is what is known as decentralized apps These make it a lot simpler for other individuals to verify what has happened which means that there s no need for other people to get involved in what was expected doesn t happen Insurance  It s what makes smart contracts what they are that what is agreed upon is what will be executed Insurance is one type of business that could benefit from this since what happens when there s a claim can be automated Legal work  These days what makes smart contracts possible might seem similar to what people are used to when they receive legal advice instead of what happens when what is needed has been fulfilled what is executed immediately which means that what is expected without the need for third parties What are some of the challenges of using smart contracts There are some challenges that business owners might come across if what they re looking to do what will be done is what s expected  Here are some of what they are Writing smart contracts for blockchain technology might seem relatively new which means that what has been tested might be what businesses are used to working with instead of what happens on a decentralized network Smart contracts operate on the blockchain which means that what is in them is what executes what will happen This is what makes it important to know what is in the code so that what will be executed when triggered can be agreed upon Without testing there s no way to ensure what happens isn t something else or what was expected doesn t happen if what is written is what will be executed since what will happen cannot be altered The need for what happens when what has been agreed upon isn t what would have happened if a third party was involved which means that there are a lot of trusts that need to go into what a smart contract can offer Contact UsIf you need what a smart contract can offer and what makes them possible please don t hesitate to contact us We have a team of experts who are more than happy to help you with your project www labs duomly comThank you for reading Radek from Duomly	2022-03-11 15:04:57
海外TECH	DEV Community	MacOS launching the Music app after pressing play button 😠	https://dev.to/slothy/macos-launching-the-music-app-after-pressing-play-button-5161	MacOS launching the Music app after pressing play button I m losing my mind every time I hit the play button and something isn t already playing in the background it just randomly launches the Apple Music app which I ve never intentionally opened nor have ever desired to use but is forcefully thrusted upon me as bloatware Steve is turning over in his grave this is pure cancer	2022-03-11 15:04:05
海外TECH	DEV Community	Build Your Own Livestreaming App with Twilio Live	https://dev.to/codesphere/build-your-own-livestreaming-app-with-twilio-live-4709	Build Your Own Livestreaming App with Twilio LiveWith the increase in remote work and lectures in the past two years there has been an increase in the need for live streaming applications for online meetings classes and webinars While general purpose live streaming applications are available organisations prefer the use of their own internal live streaming applications that meet their specific needs Creating a live streaming application entirely from scratch can take up a lot of resources and effort This is where Twilio Live which provides pre built libraries and SDKs proves really helpful With the help of these libraries we can quickly deploy applications as per our needs In today s tutorial we re going to build a live streaming application using Twilio Live Node js and Express to build the server and vanilla JavaScript for the client side We will also use ngrok to stream it across multiple devices The SetupBefore we start writing the actual application we need to set our environment up Make sure Node js and npm are installed on the machine To use Twilio Live we need to create a Twilio account You can create a free trial account here Try Twilio Free Creating a Twilio account gives us our ACCOUNT SID It also lets us generate the API key required in our live streaming application We need to download ngrok to be able to generate a link that we can use to access the live stream on multiple devices You can download it here ngrok download Now let s create a folder that will be used as the project directory and run the following command to create our package json filenpm initThen let s install our dependencies with npm install dotenv express twilio twilio live player sdkNow let s create our env file with the following environment variables TWILIO ACCOUNT SID XXXXXTWILIO API KEY SID XXXXXTWILIO API KEY SECRET XXXXXYou can find the first variable here in your Twilio account Twilio consoleThe other two need to be generated by going to For Twilio and clicking on the “Create API key Inside your project directory create a folder named public Our client side files will go here Inside the public folder create a folder named livePlayer Copy the following files from node modules twilio live player sdk dist build into this folder twilio live player min jstwilio live player wasmworker min jstwilio live player wasmworker min wasmNow that we have set our environment up we are ready to build our live streaming application with the help of Twilio Live To create our application we need the following building blocks A server that can generate access tokens for the streamer and audience create endpoints to control the live stream and create and update rooms A streamer to generate the live stream An audience to view the live stream The ServerCreate a file named server js inside the project directory with the following code This server serves our static pages creates endpoints to start and end the live stream and gets access tokens for the participants We listen to the server on port The Client SideFirst create a file named index html inside the public folder and add the following code to itThis file will be the homepage for our live streaming application It can be opened in the browser using localhost Now we need to create our streamer end of the application We will need two files for this purpose One is streamer html and the other streamer js Create both files inside the public folder using the code below Our Express server will serve this page at the “ stream endpoint You can access it at localhost stream We will now create the audience page for our application This will again need two files namely audience html and audience js Create both of the files inside the public directory The code for the audience page is available belowOur Express server will serve this page at the “ watch endpoint You can access it at localhost watch There you have it We have created a live streaming application using Node js Express Vanilla Javascript and Twilio Live Run npm start and open localhost in the browser to view your webpage Once npm start is running open terminal and run ngrok http This will create a temporary URL that we can use to access our webpage on another machine This helps us use one device as a streamer and another as the audience This is just a demo but you can modify it and make it your own When you are ready to show off your live streaming application to the world you can build deploy and host it on Codesphere the all in one development platform that supercharges your development Happy Coding	2022-03-11 15:01:30
Apple	AppleInsider - Frontpage News	Preorders start for new iPhone SE, upgraded iPad Air, and green iPhone 13 models	https://appleinsider.com/articles/22/03/11/preorders-start-for-new-iphone-se-upgraded-ipad-air-and-green-iphone-13-models?utm_medium=rss	Preorders start for new iPhone SE upgraded iPad Air and green iPhone modelsThe new green versions of the iPhone and iPhone Pro are now available to preorder along with the revised iPhone SE and the iPad Air Apple s new iOS and iPadOS devices went on preorder from am Eastern am Pacific on the Apple Store online Each device is due to ship the first buyers on March though shipping dates are likely to slip back rapidly Alongside the Mac Studio Studio Display and accessories this means that now everything that was unveiled at the recent Apple Event is available to either order or preorder Read more	2022-03-11 15:03:37
海外TECH	Engadget	Classic Dungeons & Dragons 'Gold Box' games are coming to Steam	https://www.engadget.com/dungeons-and-dragons-gold-box-games-steam-153016501.html?src=rss	Classic Dungeons amp Dragons x Gold Box x games are coming to SteamIf you played PC role playing games in the previous century there s a good chance you have fond memories of SSI s Dungeons amp Dragons quot Gold Box quot titles ーand now you ll have an easy way to play many of them SNEG is bringing multiple Gold Box Classics collections to Steam on March th Most are themed around their D amp D franchises and they all include a special game launcher quot enhanced quot DOSBox emulator support and utilities to help you transfer parties map dungeons and otherwise manage your RPGs There are three Forgotten Realms collections including one for the Eye of the Beholder series another for the Pool of Radiance and Savage Frontier titles and a third for Dungeon Hack and Menzoberranzan DragonLance fans will find a bundle for the Krynn trilogy while Dark Sun and Ravenloft enthusiasts have their own packs Al Qadim The Genie s Curse and D amp D Stronghold Kingdom Simulator are available individually This might not satisfy you if you re a completist The catalog doesn t include DragonStrike Spelljammer and other games that don t fit neatly into the stereotypical Gold Box format These aren t remasters either so they ll be just as low resolution as you remember Still this might be appealing if you want a nostalgic computer RPG experience without the hassles of swapping floppy disks	2022-03-11 15:30:16
海外TECH	Engadget	CNN+ will start streaming on March 29th	https://www.engadget.com/cnn-plus-release-date-streaming-151710197.html?src=rss	CNN will start streaming on March thCNN has revealed exactly when its dedicated streaming service will debut CNN which costs per month or per year will arrive on March th Those who sign up in the first four weeks and maintain their subscription will get percent off the monthly plan for life that works out to per year for the foreseeable future The service will deliver live on demand and interactive news driven programming Subscribers of CNN s linear service can watch cable broadcasts and on demand content through the app too CNN hired away Chris Wallace from Fox News to host a CNN show Other daily launch programming includes shows anchored by Wolf Blitzer Kate Bolduan Sara Sidner and Bianca Nobilo as well as a weekday edition of Reliable Sources Viewers can also expect Anderson Cooper Full Circle to be available on CNN as well as a book focused show with Jake Tapper a show from Christiane Amanpour and much more	2022-03-11 15:17:10
Cisco	Cisco Blog	5 Reasons a Raspberry Pi Belongs in Your Network Lab	https://blogs.cisco.com/learning/5-reasons-a-raspberry-pi-belongs-in-your-network-lab	Reasons a Raspberry Pi Belongs in Your Network LabIt s Pi Day everyone ーmy favorite crowd sourced holiday And not just because of my deep affection for fruit sugar filled pastries Nope since it was first released ten years ago I ve loved the Raspberry Pi microcomputer So when I was asked if I had any ideas for a Pi Day blog I knew exactly what I wanted	2022-03-11 15:45:42
海外科学	NYT > Science	Wolves, and Misinformation About Them, Make a California Comeback	https://www.nytimes.com/2022/03/11/science/california-wolves-misinformation.html	Wolves and Misinformation About Them Make a California ComebackFor the past years wolves have been steadily returning to the state after being wiped out a century ago But not everyone is rolling out the welcome mat	2022-03-11 15:50:22
海外科学	NYT > Science	Shipwreck From 1891 is Found in Lake Superior	https://www.nytimes.com/2022/03/11/us/shipwreck-lake-superior.html	Shipwreck From is Found in Lake SuperiorThe Atlanta was carrying coal across Lake Superior when it sank in a storm in the th century Its discovery has revived the story of the crew s struggle to reach shore	2022-03-11 15:05:49
金融	RSS FILE - 日本証券業協会	英文開示銘柄一覧	https://www.jsda.or.jp/shijyo/foreign/meigara.html	開示	2022-03-11 15:34:00
金融	金融庁ホームページ	公的保険制度を解説するポータルサイトを開設しました。	https://www.fsa.go.jp/news/r3/hoken/20220311.html	保険制度	2022-03-11 17:00:00
金融	金融庁ホームページ	審判期日の予定を更新しました。	https://www.fsa.go.jp/policy/kachoukin/06.html	期日	2022-03-11 16:00:00
金融	金融庁ホームページ	三井製糖（株）との契約締結交渉者役員による内部者取引に対する課徴金納付命令の決定について公表しました。	https://www.fsa.go.jp/news/r3/shouken/20220311-1.html	三井製糖	2022-03-11 16:00:00
金融	金融庁ホームページ	（株）ミツバ株式に係る相場操縦に対する課徴金納付命令の決定について公表しました。	https://www.fsa.go.jp/news/r3/shouken/20220311-2.html	相場操縦	2022-03-11 16:00:00
金融	金融庁ホームページ	（株）レオパレス２１社員からの情報受領者による内部者取引に対する課徴金納付命令の決定について公表しました。	https://www.fsa.go.jp/news/r3/shouken/20220311-3.html	内部者取引	2022-03-11 16:00:00
ニュース	BBC News - Home	Ukraine war: Putin seeks foreign volunteers to fight in Ukraine	https://www.bbc.co.uk/news/world-europe-60705486?at_medium=RSS&at_campaign=KARANGA	leader	2022-03-11 15:25:26
ニュース	BBC News - Home	War in Ukraine: Instagram banned in Russia over 'calls to violence'	https://www.bbc.co.uk/news/technology-60709208?at_medium=RSS&at_campaign=KARANGA	calls	2022-03-11 15:07:37
ニュース	BBC News - Home	Abuse survivors hear Stormont public apology	https://www.bbc.co.uk/news/uk-northern-ireland-60676276?at_medium=RSS&at_campaign=KARANGA	institutions	2022-03-11 15:45:36
ニュース	BBC News - Home	Ukraine maps: At-a-glance guide to the Russia war	https://www.bbc.co.uk/news/world-europe-60506682?at_medium=RSS&at_campaign=KARANGA	russia	2022-03-11 15:28:26
ニュース	BBC News - Home	What sanctions are being imposed on Russia over Ukraine invasion?	https://www.bbc.co.uk/news/world-europe-60125659?at_medium=RSS&at_campaign=KARANGA	ukraine	2022-03-11 15:12:07
ニュース	BBC News - Home	Mark Kermode and Simon Mayo are ending their 5 Live film show	https://www.bbc.co.uk/news/entertainment-arts-60705765?at_medium=RSS&at_campaign=KARANGA	april	2022-03-11 15:19:12
北海道	北海道新聞	不正入札再発防止へ基本方針　予定価格事前公表　官製談合疑惑の南富良野町	https://www.hokkaido-np.co.jp/article/655922/	上川管内	2022-03-12 00:08:43
北海道	北海道新聞	国の不作為指摘、全面救済迫る　強制不妊訴訟・東京高裁判決	https://www.hokkaido-np.co.jp/article/655915/	強制不妊	2022-03-12 00:07:20