投稿時間:2021-09-12 21:21:41 RSSフィード2021-09-12 21:00 分まとめ(25件)

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python	Pythonタグが付けられた新着投稿 - Qiita	【勉強記録】正規表現の分解	https://qiita.com/sagittarius30008/items/b067e8db1cb10a70c86d	今回はこちらで公開されている正規表現のサンプルをいくつかお借りして、それを分解することでどのような表現で実現しているのか確認してみたいと思います。	2021-09-12 20:30:53
js	JavaScriptタグが付けられた新着投稿 - Qiita	【JEST入門】テストコードを書いてみよう　~環境構築とBabelの設定~	https://qiita.com/YSasago/items/6f23055c971a091f9993	JestのGitHubリポジトリ公式ドキュメント実行環境OSmacOSBigSurNodejsnpmjestJestのインストールはじめにJestを動かすためのプロジェクトjestbasicを作成し、npmコマンドでjestをインストールします。	2021-09-12 20:21:16
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	PHP7.4.21　Mac環境でPostfixを使用したsend_mail関数の仕組みがわからない	https://teratail.com/questions/359124?rss=all	PHPMac環境でPostfixを使用したsendmail関数の仕組みがわからない前提・実現したいことお世話になっております。	2021-09-12 20:51:18
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	python　tkinter ファイルパスの記述について	https://teratail.com/questions/359123?rss=all	pythontkinterファイルパスの記述について以下inputnbspに対するoutputについて質問です。	2021-09-12 20:28:48
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	Typescriptで引数があった場合に、返り値の型を変える方法ありますか？	https://teratail.com/questions/359122?rss=all	const	2021-09-12 20:09:14
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	VisualStudio2019で、template基底クラスのメンバをtemplate派生クラス内で記述したときに色が変わらない	https://teratail.com/questions/359121?rss=all	VisualStudioで、template基底クラスのメンバをtemplate派生クラス内で記述したときに色が変わらないtemplateltclassTgtclassAprotectedintmMembertemplateltclassTgtclassBAltTgtvoidfAltTgtmMembervisualnbspstudionbspで、上記のコードのmMemberの色がquotオプションgt環境フォントおよび色gtテキストエディターquotのquotcnbspローカル変数quotで指定した色に変わらず、quotテキスト形式quotで指定した色のままになっていしまいます。	2021-09-12 20:02:17
AWS	AWSタグが付けられた新着投稿 - Qiita	"context requires credentials to be passed as environment variables"の対処法	https://qiita.com/borashisan/items/c132ce30c01b292455c4	dockercontextusemyecscontextdockercomposeupするとdockercomposeup↓contextrequirescredentialstobepassedasenvironmentvariables当然何も入力していないcontextなのでこういう挙動なのだなと確認してcontextをdefaultに戻そうとするとdockercontextls↓contextrequirescredentialstobepassedasenvironmentvariablescontextが確認できません。	2021-09-12 20:40:55
AWS	AWSタグが付けられた新着投稿 - Qiita	AWS CLI復習◆Cloud9用VPCの構築	https://qiita.com/emiki/items/a646b099b2e3c2e1c233	VPCIDを抽出するのにVPCのタグ名が必要になるため、変数にVPCのタグ名を格納しておきます。	2021-09-12 20:12:25
Docker	dockerタグが付けられた新着投稿 - Qiita	"context requires credentials to be passed as environment variables"の対処法	https://qiita.com/borashisan/items/c132ce30c01b292455c4	dockercontextusemyecscontextdockercomposeupするとdockercomposeup↓contextrequirescredentialstobepassedasenvironmentvariables当然何も入力していないcontextなのでこういう挙動なのだなと確認してcontextをdefaultに戻そうとするとdockercontextls↓contextrequirescredentialstobepassedasenvironmentvariablescontextが確認できません。	2021-09-12 20:40:55
Azure	Azureタグが付けられた新着投稿 - Qiita	サービスプリンシパルを知ろう！	https://qiita.com/hiro10149084/items/babab9f5f123eed8f7bb	ちなみにAutomationを作った時にできるAzureADアプリケーションには証明書が付与されていますが、この有効期限は年となります。	2021-09-12 20:32:41
技術ブログ	Developers.IO	GO言語 1.17 バージョンリリースとセキュリティイシュー	https://dev.classmethod.jp/articles/golang-update-and-security/	言語	2021-09-12 11:01:31
海外TECH	Ars Technica	As COVID cases rise, so do hospital-related infections	https://arstechnica.com/?p=1793697	covid	2021-09-12 11:05:00
海外TECH	DEV Community	Webpack Academy #7: More options on config file	https://dev.to/codeoz/webpack-academy-7-more-options-on-config-file-405b	Webpack Academy More options on config fileWe almost do it This is the last webpack academy I hope you like and learn it Today will be easier than the last I will show you some other interesting things to do in the config file Name optionsWhen we use hash to name our bundle we made something like filename contenthash js But you can use another thing to properly name your bundle Use the name option So you can use this filename name contenthash js And we get something likemyApp cec jsWhy do we get this name To understand this we should go back into the entry property in our config file entry myApp src style css src main js Yes webpack will use the name given by your entry point here myApp and put it into name property It works for css bundle also But what happens with chunk file since there are not defined in our config file Do you understand that you can give a name to your chunk const jsonObjectImport async gt import webpackChunkName myChunkName big object json Webpack will replace name by the chunk name here myChunkName It s an important property to me since we can see the name of our bundle in our dist folder Create aliasIn order to avoid something like this import toto from toto toto we can use alias to make something more readable like import toto from toto totoTo achieve this we need to use resolve alias in our config file resolve alias path resolve dirname src So if we need to import a file from src we can make thisimport first from first For more information about this resolvealias Copy webpack pluginIf you have any static files you will see that theses static files will be not added into your dist folder Since it will not be compiled by Webpack If you need to add some static files into our dist folder like images or others things you will need to use Copy Webpack plugin new CopyPlugin patterns from path resolve dirname src static to static You put the source path of your statics files and the name of the folder that will contain these files in our dist folder Environment filesIf you need to inject an environment file into your project you will need to use this plugin DotenvPlugin Create an env with your value Here I push the env file for the example but you should not push env file in your git project new DotenvPlugin sample env path env You can use sample with default env value also For more information It s finished I hope you like this series about Webpack I like to write this and I hope you learn a few things You can check the source code at this commitI hope you like this reading If you want to have a nice article to read about web dev you can subscribe to my FREE newsletter amp get a cheatlist about Javascript at this URL MY NEWSLETTER ️You can SUPPORT MY WORKS ‍ ️You can follow me on Twitter ‍Github And you can mark this article	2021-09-12 11:41:12
海外TECH	DEV Community	Ternary Operator and Short Circuit Conditionals in Python like JavaScript	https://dev.to/karanmunjani/ternary-operator-and-short-circuit-conditionals-in-python-like-javascript-24h7	Ternary Operator and Short Circuit Conditionals in Python like JavaScriptIf you ever coded in JavaScript then you probably would be aware about content of cover image Assuming you are aware that how much ternary operators are useful in programming languages such as C C Go Perl Ruby Java JavaScript etc And Yes Python also Supports Ternary operator Python Introduced Ternary operator in Python It s Called inline if Which has syntax something like this a if condition else bThat Simply means if condition is true then result is a else b But if you come from JavaScript Background then it seems odd at first Cause we are used to code something like this variable condition a bBut what if we can familiarize that odd ternary operator to feel like JavaScript one Yes We can do that and that s not a rocket science We can simply replace the with python logical and operator and with logical or operator Let s See how variable condition and a or bAfter reading this you might be feel like hmmm that was not much important and useful But the aim of this article to explain that how logical conditional operators are helpful and just requires a different approach to it Also We can use conditional short circuiting in JavaScript let data online amp amp getData What it does is if online is true then and then it calls the getData method Short circuiting means that when we are evaluating an AND expression amp amp if the first operand is false it will short circuit and not even look at the second operand So instead code in python like this if online data getData We can simply use logical and again to avoid writing if statement using one liner code data online and getData Yes I accept that this was not much smart article compare to others but Hope Some Novice programmer will get help form this Hope you gained some information from this article Thank You For reading it outComment Your Thoughts Below	2021-09-12 11:31:36
海外TECH	DEV Community	Ethereum Mining in simple language; How to extract the second most important cryptocurrencies in the world?	https://dev.to/banjamindev/atrium-extraction-in-simple-language-how-to-extract-the-second-most-important-cryptocurrencies-in-the-world-24fk	Ethereum Mining in simple language How to extract the second most important cryptocurrencies in the world ethereum is the second largest currency in the world and one of the most important extractable currencies in the cryptocurrency market Many digital currency market players consider ethereum mining to be an important and reliable source of income If you are also interested in ethereum extraction this article is a comprehensive but simple guide to ethereum extraction Please stay with us until the end of the article In this article we will assume that you know what an ethereum is and how it works by default So we will only give a brief explanation about this What is an ethereum ethereum extractionethereum creator Vitalik Butrin became acquainted with Bitcoin at the age of and has since started writing for Bitcoin magazine and offering suggestions for improving it But since these proposals did not materialize he decided to build his own digital currency In ethereum was introduced to the market ethereum is actually a blockchain and its native cryptocurrency is called ETH ethereum has its own browser and language and payment system This blockchain also has no single and central controller and thousands of users voluntarily control it with their computer systems around the world These users are called nodes or node networks Nodes perform ethereum transaction verification and smart contracts on the network What is extraction In simple terms extraction is the process of solving complex mathematical equations Miners are network nodes that use their computer s processing time and power to solve these equations ethereum extraction algorithm is proof of work that confirms ether or ethereum transactions In addition miners are responsible for creating new tokens and blocks in the process In the end every miner will be rewarded for their successful activity Poof of work algorithm is the most popular consensus algorithm in blockchain cryptocurrencies The consensus algorithm allows the user to use the same source of information as other users and ensures that all users on the network use the same source The purpose of this algorithm is to prevent the entire system from being harmed when one or more users leave the network The proof of work algorithm was first used in Bitcoin but its concept and application is not limited to Bitcoin Why is it necessary to extract ethereum ethereum extractionThe ethereum network as we said has its own blockchain Any transaction in this blockchain must be approved by the miners That s why transactions take time This time is spent approving ethereum miners ethereum transactions enter the ethereum blockchain after confirmation So the blockchain needs to have enough space to store transactions In addition to confirming transactions miners add new blocks to the blockchain In general the task of a miner is to make sure that no transactions are made twice by mistake and that no errors occur in the network When a miner can solve one of the equations he adds the corresponding block to the blockchain and receives his reward By doing this the three goals of the extraction work are Confirm correct transactionsAdd new blocks and create new storage spaceReceive rewards by miners and add new coins to the networkwill be done Who is Miner What is a Miner ethereum extractionMiner is a person who provides his her computer processing power to the network to approve transactions and record new transactions Miner actually does this in the hope of receiving a reward from the network new block extraction bonus transaction registration fee But it is not possible to extract ethereum with GPUs from home computers ethereum extraction is actually done with the help of extraction pebbles which is a collection of powerful graphics cards These pebbles are also called miners What is GPU Mining GPU mining or mining with graphics cards is a popular way to extract cryptocurrencies especially ethereum This method was formed because bitcoin mining with CPUs CPUs was increasing day by day and on the other hand it had created a kind of monopoly among ISIC manufacturers GPU GPU extraction tools were much cheaper and this method was able to find its place among important cryptocurrencies such as ethereum and Monroe These cryptographers have written their algorithms based on the presence of small extractors and their persistence in the network and want to take care of them What is the ethereum Extraction Algorithm Digital currencies use different consensus algorithms for their operations Consensus algorithms help the network to tolerate error The two most important consensus algorithms are the Proof of Work algorithm and the Proof of Stake algorithm Bitcoin and ethereum both use proof of work algorithms as market leaders in digital currencies In the proof of work algorithm the user must provide the network with the processing power of his computer to participate in the network and make a profit In this algorithm validation nodes hereinafter referred to as miners or miners perform the hashing of information Hashing means creating a unique solution function to add information to the blockchain A hash is a seemingly random string of letters and numbers that is created when solving a hash function This string of letters and numbers is actually encrypted transaction information that is to be stored in the blockchain Important points before choosing an extraction poolCurrently several small and large extraction ponds are active in the ethereum extraction process and have very different characteristics But each miner can only join one pool So before you make your final decision you can experience membership in different pools and read about them well Important points to consider when choosing a pool The size of the poolThe more people who are members of the pool and the more devices that share their processing power with others the better the chances of solving a block for all members However if the number of pool members is too large the reward received by each member will decrease For this reason the size of the pool can be very effective in the profitability of its membership Currency payment method in the poolAnother point to keep in mind when choosing a pool is the minimum withdrawal of currency from the account If the minimum withdrawal is very high for example ethereum you have to wait a long time for the currency you mined to reach this amount So you will need a lot of time to make a profit or change the pool Pool feeExtraction pools like any other service center receive a fee for managing and organizing extraction and distribution of rewards among users When you join the pool and use its services you also have to pay some of your income to the pool as a fee This fee is usually between and It is better not to look for pools with fee because it is not right to trust them Method Subscribe to cloud mining servicesCloud extraction services are services in which a person does not need to share the processing power of a computer or extraction rig with others to subscribe but can only extract ethereum for a fee or in fact rent an extraction machine These services are actually a very large mining farm where people actually pay to participate in the mining farm costs and receive ethereum in return This method is much easier than the other two methods and does not require much time or technical knowledge But before joining a cloud mining service ask yourself the following questions Why should one lease one s mining machine to others when one can make a profit with it Why not buy ethereum with the same membership fee to save in your account Try to answer these questions carefully and thoroughly Membership in these services is usually not cost effective In fact cloud mining services are guaranteed to be more profitable for its operators than for its users What are the problems of ethereum extraction ethereum mining like most digital currency mining has many challenges and opportunities Although mining is still a lucrative business given ethereum price growth you should be aware of its problems before starting any business ethereum and bitcoin mining is no exception The high cost of electricity and mining equipment exposure to hacker attacks and decentralization are some of the problems that we will address below High costs of electricity and extraction equipmentMining cryptocurrencies is generally costly If you want to extract ethereum legally and at the electricity rate you have to pay approximately tomans per kilowatt hour This cost is usually calculated during the month and of course it varies depending on the model of your device But keep in mind that the more powerful and profitable the device you buy the higher its electricity costs will be ethereum extraction devices are another part of your costs Graphic ethereum extraction graphs are not cheap and are out of competition especially with the constant advancement of technology So if you want to upgrade your device by increasing the network hash rate the extraction costs will also increase The risk of hackers attacking your propertyAvoid ransomwareHackers are always one step ahead of security technologies If you do not take good care of your assets and computer system you may be exposed to cryptocurrencies and your passwords may be stolen In alone attacks on computer browsers increased by So if you set up only one mining node and do not secure it you are actually doing an important service to hackers CentralizationThe initial idea of ​​cryptocurrencies was to decentralize and take the power of money management out of the hands of a specific source such as a bank But as time went on and many people turned to mining it became necessary to design more powerful and better mining machines Of course the technology of making these devices and pebbles was given to certain companies This is practically the opposite of the concept of decentralization of digital currencies Although ethereum has entered the process using fewer graphic pebbles it is still at risk So before entering the ethereum extraction process please know all the challenges you and the network face Start buying and selling with full awareness to help both yourself and the network and ultimately have a healthy and secure income source Is ethereum extraction cost effective For now yes as long as you follow the tips in the previous section of this article ethereum reached in and reached its highest ceiling This shows that the approach of the people to the ethereum market is very positive and the extraction will be very profitable if the details are observed For example mining with the Pandaminer B Plus device will currently generate about million Tomans per month for Miner In the future the conditions for making money from the ethereum network will probably change ethereum is planning to move to the ethereum network This blockchain network will continue to operate with a stock proof algorithm If this happens the ethereum extraction process will be obsolete But at the time of writing ethereum extraction is still cost effective Know more How long does ethereum extraction last What percentage of ethereum has been extracted so far ethereum like Bitcoin has no limit on the number of tokens it can offer At the time of writing ethereums have been extracted and will continue to be extracted until ethereum migrates to the blockchain network with the stock proof algorithm Of course to protect the network from inflation only million ethereums are extracted annually This means two ethereums approximately every seconds How to extract ethereum ethereum ethereum is not actually extracted ethereum uses a stock proof algorithm In this algorithm instead of the need for processing power it is necessary to register participation in the network with your assets Having ethereums for example will qualify you to participate in the network and decide whether to make changes or approve transactions By providing these ethereums to the network for approval you will receive a reward source Is ethereum extraction legal in Iran According to a government decree the extraction of bitcoins ethereum and other cryptocurrencies is possible only with the permission of the Ministry of Industry Mines and Trade Of course in free trade zones the ministry has delegated the responsibility of issuing licenses to the Free Zones Organization Also in some cities there are restrictions on the establishment of Ramzarz mining units it includes a limit of km in Tehran km in Isfahan and km in the centers of other provinces Electricity supply is also possible by receiving a branch from the national grid or the construction of a power plant outside the national grid But according to the same law the extraction of ciphers during peak hours is prohibited Another important point of this decree is that the production centers of cryptocurrencies are considered as an industrial production unit and will be subject to the tax law but if they issue their cryptocurrencies and return the resulting currency to Iran their tax will be zero Source Is free ethereum extraction possible We keep emphasizing on the Wallx blog that nothing is completely free and so does ethereum Free The least you can ask for when extracting ethereum for free is the internet computer or mobile processing and of course your time However there are tools that you can use to get ethereum without paying directly Of course these tools have little profitability and in many cases the profit is so low that even its harvest is not economical But the choice is yours anyway The Idle Empire website is one of the sites where you can get ethereum by subscribing and choosing from a variety of activities For example filling out questionnaires watching promotional videos and playing games are some of these methods Introducing the best ethereum extraction softwareethereum extraction software like other cryptocurrencies covers a very wide range In fact there is a long list of ethereum extraction software that you can not excel at until you have used them This makes it difficult to choose better software But relying on the experience gained in this area and analyzing hundreds of user feedback and critiques can provide a limited but strong list of ethereum extraction software ETHminer softwareThe first recommended software is ETHminer software As the name implies this software is designed solely for ethereum Extraction and now supports Linux Mac and Windows operating systems When downloading this software pay attention to select the version related to your operating system With this software in addition to ethereum you can extract other cryptocurrencies that use the Ethash algorithm Including Expansion Elysmus Metavars Myosquin Pearl Classical ethereum etc CGMiner softwareThe next software is CGMiner which was released in and is still one of the most popular mining software The main reason for the popularity and ubiquity of CGMiner is its excellent compatibility with three different hardware ASIC FPGA GPU CG software is an open source software written in C language The advantages of this software include measuring the desired hash rate with zero delay as well as advanced detection of new blocks This software is also available for Linux Mac and Windows operating systems BitMinter softwareThe third application is BitMinter which offers great features to its users These include a clear graphical interface as well as a very high connection speed to the Bitminter mining pool This software entered the market in and it can be said that it has the most experienced mining pools in the field of cryptocurrency mining so that it now has registered user accounts Another advantage of this software is that unlike CGMiner it does not need to be installed because it is based on the Java Network Launch Protocol JNLP You can easily run it on ASIC FPGA GPU hardware The software is also compatible with Linux Mac and Windows operating systems source Concluding remarksethereum mining like bitcoin mining is an opportunity for digital currency market enthusiasts to both contribute to and benefit from network stability and security In this Walx article we tried to explain what is needed for ethereum mining From now on start the extraction rig with you to start extracting this amazing cryptocurrency If you have questions about Bitcoin or ethereum mining ask us in the comments section	2021-09-12 11:05:02
Apple	AppleInsider - Frontpage News	Gunfire, stabbing reported near Apple Stores in the Apple Crime Blotter	https://appleinsider.com/articles/21/09/12/gunfire-stabbing-reported-near-apple-stores-in-the-apple-crime-blotter?utm_medium=rss	Gunfire stabbing reported near Apple Stores in the Apple Crime BlotterApple products stolen from school Apple Watch tracks carjacking suspects and iPhones seized from a trooper and a lawyer The Easton Town Apple Store in Ohio The latest in an occasional AppleInsider series looking at the world of Apple related crime Read more	2021-09-12 11:53:47
海外ニュース	Japan Times latest articles	‘Everything changed overnight’: Afghan reporters face an intolerant regime	https://www.japantimes.co.jp/news/2021/09/12/world/taliban-afghanistan-media/	wrongdoings	2021-09-12 20:39:57
海外ニュース	Japan Times latest articles	In Japan politics, social media savvy Taro Kono is a rarity. His party isn’t fully on board.	https://www.japantimes.co.jp/news/2021/09/12/national/politics-diplomacy/kono-communication-style-social-media/	In Japan politics social media savvy Taro Kono is a rarity His party isn t fully on board Kono s unorthodox communication style is a double edged sword and has made him a polarizing figure among some of the Liberal Democratic Party s influential old guard	2021-09-12 20:22:07
ニュース	BBC News - Home	England vaccine passport plans ditched, Sajid Javid says	https://www.bbc.co.uk/news/uk-58535258?at_medium=RSS&at_campaign=KARANGA	shouldn	2021-09-12 11:51:14
ニュース	BBC News - Home	Health tax could increase family breakdown, tax authority warns	https://www.bbc.co.uk/news/uk-politics-58536118?at_medium=RSS&at_campaign=KARANGA	impact	2021-09-12 11:33:19
ニュース	BBC News - Home	Pope warns of anti-Semitism as he visits Hungary	https://www.bbc.co.uk/news/world-europe-58533533?at_medium=RSS&at_campaign=KARANGA	orban	2021-09-12 11:43:31
ニュース	BBC News - Home	Clacton stabbing: Two men, three boys and woman held in murder probe	https://www.bbc.co.uk/news/uk-england-essex-58535593?at_medium=RSS&at_campaign=KARANGA	clacton	2021-09-12 11:21:44
ニュース	BBC News - Home	Great North Run: Britain's Marc Scott wins men's race as Kenya's Hellen Obiri takes women's title	https://www.bbc.co.uk/sport/athletics/58535533?at_medium=RSS&at_campaign=KARANGA	Great North Run Britain x s Marc Scott wins men x s race as Kenya x s Hellen Obiri takes women x s titleBritain s Marc Scott wins the Great North Run in Newcastle with Kenya s Hellen Obiri triumphing in the women s event	2021-09-12 11:57:02
LifeHuck	ライフハッカー［日本版］	そのiPad、もっと活躍できる！ ｜2021年上半期ベスト機能まとめ	https://www.lifehacker.jp/2021/09/241980matome-ipad.html	記事	2021-09-12 21:00:00
北海道	北海道新聞	国内で７２１３人が感染　新型コロナ、４１人死亡	https://www.hokkaido-np.co.jp/article/588441/	新型コロナウイルス	2021-09-12 20:04:00