投稿時間:2022-05-16 05:30:49 RSSフィード2022-05-16 05:00 分まとめ(32件)

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海外TECH	MakeUseOf	Sick of Irrelevant YouTube Recommendations? Here's What You Need to Do	https://www.makeuseof.com/tag/sick-of-irrelevant-youtube-recommendations-heres-what-you-need-to-do/	Sick of Irrelevant YouTube Recommendations Here x s What You Need to DoHere s how to reset improve and remove YouTube s recommendations so you see videos that are more relevant to your interests across the service	2022-05-15 19:40:14
海外TECH	DEV Community	Difference between Reflect.ownKeys() and Object.keys()?	https://dev.to/jasmin/difference-between-reflectownkeys-and-objectkeys-58n4	Difference between Reflect ownKeys and Object keys In this post we will be comparing Reflect ownKeys and Object keys method In first glance we might feel that they produce same result but actually they behave differently in some situation Let s take some examples to understand the difference between them Reflect ownKeys This method returns an array of target objects own property which mainly is the array of all properties enumerable or not and symbol properties found directly upon the given object To understand this better let us consider this example In this example we saw that the properties and the symbols properties were printed in the result Object keys This method only returns enumerable properties of an object Let s take the above example to understand this better As compared to the previous result we just got the objects property in the result The major difference is that Reflect ownKeys method returns symbol properties and objects properties even if it is not enumerable which is not the case with Object keys Feel free to add up to this post Happy Learning ‍	2022-05-15 19:35:38
海外TECH	DEV Community	🌺 AWS CDK 101 - 🚂 Dynamodb stream triggering batch deleteItem on dynamodb table	https://dev.to/aravindvcyber/aws-cdk-101-dynamodb-stream-triggering-batch-deleteitem-on-dynamodb-table-2p8l	AWS CDK Dynamodb stream triggering batch deleteItem on dynamodb tableBeginners new to AWS CDK please do look at my previous articles one by one in this series If in case missed my previous article do find it with the below links Original previous post at Dev PostReposted previous post at dev to aravindvcyberIn this article let us add refine my previous article which demonstrated making use of a batch of dynamodb stream to delete items from another table Here we convert the simple deleteItem action into a batchWrite action which has great advantages Benefits in this approach As earlier discussed in the previous article we are trying to make this scavenging setup as efficient as possible This integration is fully asynchronous and does not block the existing process flow and it uses the least amount of API calls and resources as discussed below Involving batchWrite makes us make delete operation on a maximum chunk size of Since only one request is used in place of calls write request throttling scenarios can also be avoided when we have smaller provisioned capacities By then you also have to check the UnprocessedItems to retry any failed keys if it is returned in the worst cases In a summary including the previous article we are now able to perform a batch get stream object with a size of max which in turn performs a batch write of max at a time Fewer handler invocations and fewer dynamodb API calls Planning and Construction As already mentioned we will optimize the previous deleteItem helper function and convert our stream invocation into a batchWrite action on dynamodb table with chunks of max Starting with refractor my previous lambda a bit to achieve the desired effects optimizing goals Here you may find that we are targeting an event name to be INSERT likewise we can have finer control over our desired outcome during these stream invocations as shown below Imports necessary The below imports are using in this article import DynamoDBStreams from aws sdk import DeleteItemInput BatchWriteItemInput WriteRequest from aws sdk clients dynamodb New handler function logic Here we have optimized the lambda handler as follows this involves creating a keyMap from the stream data and further slicing this into chunks of a maximum of to perform batchWrite operation invoking our helper method exports created async function event any console log Received stream JSON stringify event undefined const keyMap any event Records map Record DynamoDBStreams Record gt console log JSON stringify Record undefined if Record eventName INSERT keyMap push Record dynamodb Keys const chunkList chunks keyMap await Promise all chunkList map async chunk any gt const results await batchDeleteDbItems chunk Object entries results forEach entry gt console log JSON stringify entry undefined Helper function dynamodb deleteItem Simple helper function to perform deleteItem from a dynamodb table Here we use the key list to generate a collection of WriteRequest of Delete action as follows const batchDeleteDbItems any async keys any gt console log Deleting keys const writeItems WriteRequest keys map key any gt const writeItem WriteRequest DeleteRequest Key key writeItems push writeItem const params BatchWriteItemInput RequestItems stgMessagesTable writeItems ReturnConsumedCapacity TOTAL ReturnItemCollectionMetrics SIZE console log deleteItem JSON stringify params undefined return await dynamo batchWriteItem params promise Minor changes to the dynamodb table definition I have highlighted the necessary changes we need to perform dynamodb stream generation for our table Most importantly I have requested only keys which will have all the necessary data we need here Besides in this article we are trying to optimize as much as we could for the least footprint const messages new dynamodb Table this MessagesTable tableName process env messagesTable sortKey name createdAt type dynamodb AttributeType NUMBER partitionKey name messageId type dynamodb AttributeType STRING encryption dynamodb TableEncryption AWS MANAGED readCapacity writeCapacity stream dynamodb StreamViewType KEYS ONLY Sample dynamodb stream with one record I have shared the dynamodb stream object used as payload to invoke our handler lambda below eventID fafddafdfc eventName INSERT eventVersion eventSource aws dynamodb awsRegion ap south dynamodb ApproximateCreationDateTime Keys createdAt N messageId S fe bb cdea SequenceNumber SizeBytes StreamViewType KEYS ONLY eventSourceARN arn aws dynamodb ap south table MessagesTable stream T Console log during execution Finally post execution we could find the above JSON payload we have received in the event object and which is then used to batch delete from our staging table You may find the results below in cloud watch logs Here a simple k load test is performed for a period of s with targets and we can get requests of which are successful the failed because of the rate limit in our API gateway Cloudwatch logs with records of keys BatchWrite result Visualizing latency involved Here we take into account successful puts get requests and a single batch deletes from separate handler functions Though each request is of a different type the common factor involved in the usage of dynamodb API calls across the network is where there are other overheads like latency PutItem RequestsBatch DeleteItem RequestsHence batchWrite or batchGet is much more efficient by avoiding the latency and hence we have tried batchWrite for deletion of unwanted data As for us I learn that is the max limit for the batch writes request collection Also it is essential to checkUnprocessedItems in the result of batchWrite operation can be inspected and it is a best practice to check and retry the failed once when we have some exceptions due to capacity or other failures due to message size In the next article we will demonstrate how we will use a similar approach to delete Object from S which we have previously created We will be adding more connections to our stack and making it more usable in the upcoming articles by creating new constructs so do consider following and subscribing to my newsletter We have our next article in serverless do check outThanks for supporting Would be great if you like to Buy Me a Coffee to help boost my efforts Original post at Dev PostReposted at dev to aravindvcyber	2022-05-15 19:28:07
海外TECH	DEV Community	100 CSS Box Shadow Presets	https://dev.to/imiahazel/100-css-box-shadow-presets-2o1k	CSS Box Shadow PresetsCSS box shadow is a fabulous CSS property It adds shadow effects around an HTML element Adding multiple effects separated by commas is my favorite feature of this box shadow property Innumerable shadows are possible by combining the available values of the box shadow property Color blur spread radius and other properties give the interface a magical look CSS Box Shadow PresetsHere are CSS box shadow presets for the quick start of designer imagination These presets range from basics to modern and conventional to popular design systems Box Shadow GeneratorEach CSS box shadow example is editable via an easy to use CSS box shadow generator Following is a quick guide for creating your masterpiece box shadow quickly Quick GuideChoose an example from CSS box shadow presets If you like the preset copy it and you are good to go Click on the Edit button to launch the box shadow generator You can add or remove as many shadows as you like Adjust the box shadow properties to match your taste Copy the box shadow snippet to use in your project Support The ProjectI hope you will like this Please share it with your buddies to support the project	2022-05-15 19:26:01
海外TECH	DEV Community	Get Hands On With Unit Testing - Jest Testing Tutorial	https://dev.to/hr21don/get-hands-on-with-unit-testing-jest-testing-tutorial-5he1	Get Hands On With Unit Testing Jest Testing Tutorial What Is Unit Testing Unit testing is a testing method that tests a single unit of source code which involves verifying the output of a function or component for a given input In other words writing unit tests is an essential part of Test Driven Development TDD where we verify that our code works as expected before we begin writing the actual function What Is Jest Jest is a JavaScript Testing Framework designed to make testing simple by providing all the essential tools for running tests within one package In this Jest testing tutorial we will learn about various features of Jest its setup and see how we can use Jest with an end to end example We will also explore about code coverage using Jest How To Install Jest Run this code in your command prompt to install the Jest Package to a new or existing project NPM Codenpm install save dev jest types jest Yarn Codeyarn add dev jest types jest How To Setup Tests With Jest Let s first start by updating the package json file with a test script that calls the Jest command for us scripts start react scripts start build react scripts build test jest eject react scripts eject To run the tests run npm test which we just defined in the package json NPM usersnpm run test Yarn usersyarn run testBy default Jest expects to find test files in a folder called tests in your project folder Let s create that new folder now mkdir tests Creating Your First Test SuiteNext up create a new file within the test folder that you just created and call it calculator test js Every time you start writing a new test suite for a functionality wrap it in a describe block describe Calculator tests gt test stuff goes here As you can see it takes two arguments a string for describing the test suite and a callback function for wrapping the actual test Visit the next line and let s create a new function called test which will be the actual test block describe Calculator tests gt test adding should return gt Resolve var result calculator sum assert expect result toBe Whenever you write a test you ll usually need to make assertions on your code To make an assertion you ll need an input and an expected output Using MatchersJest uses matchers to let you test values in different ways Here are the most common ones To Be Strict equality expect toBe Not To Be Strict equality expect not toBe To Equal Deep equalityexpect toEqual toBeTruthy or toBeFalsy Note that anything that is not logically true is falsy expect null toBeFalsy expect undefined toBeFalsy expect false toBeFalsy expect Hello world toBeTruthy Not Returns the opposite of the matcher s result expect not toEqual Now these are not the only matchers out there and if you want to learn more about matchers then visit Jest Docs Running Specific TestsFirst go into your calculator js file and copy the contents shown below const calculator sum function a b return a b diff function a b return a b product function a b return a b divide function a b return a b module exports calculator Then go back into your calculator test js and specifiy the filename of the test file you want to run This is how the file would look with just the importconst calculator require calculator Test Suite Goes HereNow let s write tests for adding two numbers and validate the expected result The numbers we ll use are amp and expecting output as describe Calculator tests gt test adding should return gt Resolve var result calculator sum assert expect result toBe In order to run this test we will need to run the following command npm run test in the terminal You should see the following output Let s try some more tests where we write a failing test case and see what output we get Change the result to an incorrect value to get this test to work See how the test looks like describe Calculator tests gt test adding should return gt Resolve var result calculator sum assert expect result toBe Now run the code above and let s see what we get As you can see you ll be able to get a detailed output of what was actually returned and what was expected and which line caused the error in the function under test Let s finish off the test suite for the other functions i e subtract product and divide const calculator require calculator describe Calculator tests gt test adding should return gt Resolve var result calculator sum assert expect result toBe test subtracting from should return gt Resolve var result calculator diff assert expect result toBe test multiplying and should return gt Resolve var result calculator product assert expect result toBe test dividing and should return gt Resolve var result calculator divide assert expect result toBe Now execute the completed test suite and see what we get Configure Test CoverageInside your package json you can easily see your code coverage with the coverage option Package Contents scripts start react scripts start build react scripts build test jest watchAll coverage eject react scripts eject Or you can also configure it by creating a jestconfig json file with the following contents collectCoverage true coverageReporters clover json lcov text skipFull true coverageDirectory report code coverage Then go back into your package json file and add the following command to your settings Package Contents scripts start react scripts start build react scripts build test jest watchAll config jestconfig json eject react scripts eject Note Run npm test and see the generated output within the terminal Now you should see code coverage generating a lcov report within your project for the calculator js file Visit the Code Coverage directory and open the html file like so Open the calculator js file and you should see the following output If your looking to improve with Jest then I ll highly recommend you visit their docs Again thank you so much for making it to the end have a great day	2022-05-15 19:18:47
医療系	医療介護 CBnews	病院給食は入院医療を継続するための“糧”-先が⾒えない時代の戦略的病院経営（170）	https://www.cbnews.jp/news/entry/20220513103027	中央社会保険医療協議会	2022-05-16 05:00:00
ニュース	@日本経済新聞 電子版	メルカリ、値動きを見える化　フリマアプリの指数開発 https://t.co/FCD8zTiO4Z	https://twitter.com/nikkei/statuses/1525924384585617408	見える化	2022-05-15 19:41:38
ニュース	@日本経済新聞 電子版	データ流通網、中国・ロシア外し　日米韓などで枠組み https://t.co/EbX7VXZI8s	https://twitter.com/nikkei/statuses/1525919362443423744	中国	2022-05-15 19:21:40
ニュース	@日本経済新聞 電子版	伊藤ハム米久、原材料高の加圧で問われる統合効果　 https://t.co/FGHoJgPPXt	https://twitter.com/nikkei/statuses/1525918131218108416	伊藤ハム	2022-05-15 19:16:47
ニュース	@日本経済新聞 電子版	銅「10年後の高値」、先物の警告　供給不足が阻む脱炭素 https://t.co/HXw8hYo4HS	https://twitter.com/nikkei/statuses/1525916353005518848	高値	2022-05-15 19:09:43
ニュース	@日本経済新聞 電子版	JFE、休止製鉄所に水素拠点検討　川崎でENEOS・JERAと https://t.co/tMAeO3P39A	https://twitter.com/nikkei/statuses/1525916249598832640	eneos	2022-05-15 19:09:18
ニュース	@日本経済新聞 電子版	インドネシアなど途上国の脱石炭、G7主導で支援枠組み https://t.co/OCntW7y2Ac	https://twitter.com/nikkei/statuses/1525914577732444160	途上国	2022-05-15 19:02:40
ニュース	BBC News - Home	Buffalo shooting: Gunman deliberately sought black victims - mayor	https://www.bbc.co.uk/news/world-us-canada-61459023?at_medium=RSS&at_campaign=KARANGA	black	2022-05-15 19:36:28
ニュース	BBC News - Home	EasyJet offers £1,000 bonus as airlines battle to recruit staff	https://www.bbc.co.uk/news/business-61460378?at_medium=RSS&at_campaign=KARANGA	cabin	2022-05-15 19:21:41
ニュース	BBC News - Home	Everton 2-3 Brentford: Nine-man Toffees miss chance to secure Premier League survival	https://www.bbc.co.uk/sport/football/61368176?at_medium=RSS&at_campaign=KARANGA	Everton Brentford Nine man Toffees miss chance to secure Premier League survivalEverton s Premier League survival hopes remain in the balance after Brentford twice come from behind to claim all three points against the nine man Toffees at Goodison Park	2022-05-15 19:58:04
ニュース	BBC News - Home	West Ham 2-2 Manchester City: 'Leaders made to wait as Hammers spoil party'	https://www.bbc.co.uk/sport/football/61459476?at_medium=RSS&at_campaign=KARANGA	West Ham Manchester City x Leaders made to wait as Hammers spoil party x Manchester City could have been all but champions on Sunday but they were held amid a frenzied atmosphere at West Ham	2022-05-15 19:08:10
ビジネス	ダイヤモンド・オンライン - 新着記事	“正しい提案”なのに、なぜか上司に却下される人の「致命的な勘違い」 - 管理職大淘汰！生き残る「上司力」	https://diamond.jp/articles/-/302632	“正しい提案なのに、なぜか上司に却下される人の「致命的な勘違い」管理職大淘汰生き残る「上司力」どの会社にも、うまく上司を巻き込みながら大きな仕事をしている人たちがいます。	2022-05-16 04:55:00
ビジネス	ダイヤモンド・オンライン - 新着記事	人を動かす「話し方」の極意、一流のリーダーが商談やプレゼンで使うノウハウ徹底解説【動画】 - 一流のビジネスリーダーが実践する「伝え方」「話し方」の鉄則	https://diamond.jp/articles/-/303166	人を動かす「話し方」の極意、一流のリーダーが商談やプレゼンで使うノウハウ徹底解説【動画】一流のビジネスリーダーが実践する「伝え方」「話し方」の鉄則日々「人前で話す力」が求められている日本のビジネスリーダーだが、その多くは「伝える」「話す」ことに苦手意識を持っているという。	2022-05-16 04:50:00
ビジネス	ダイヤモンド・オンライン - 新着記事	生命保険・損害保険・代理店「大選別時代」到来、顧客と当局が“退場候補”に厳しい目 - 選別される 生保・損保・代理店	https://diamond.jp/articles/-/303117	保険代理店	2022-05-16 04:45:00
ビジネス	ダイヤモンド・オンライン - 新着記事	一流のビジネスリーダーが実践する「伝え方」「話し方」の鉄則をスピーチのプロが伝授【動画】 - 一流のビジネスリーダーが実践する「伝え方」「話し方」の鉄則	https://diamond.jp/articles/-/303165		2022-05-16 04:40:00
ビジネス	ダイヤモンド・オンライン - 新着記事	宇宙飛行士選抜試験の知られざる実態、JAXAが「学歴不問」にした理由 - ＤＯＬ特別レポート	https://diamond.jp/articles/-/302658		2022-05-16 04:35:00
ビジネス	ダイヤモンド・オンライン - 新着記事	日能研で「合格者が多い中高一貫校」ランキング【首都圏＋茨城県】2位大宮開成、1位は？ - DIAMONDランキング＆データ	https://diamond.jp/articles/-/303216		2022-05-16 04:32:00
ビジネス	ダイヤモンド・オンライン - 新着記事	「ウクライナ降伏なら犠牲者は少なくて済む」は本当？戦争データで検証 - 原田泰　データアナリシス	https://diamond.jp/articles/-/302988	降伏	2022-05-16 04:30:00
ビジネス	ダイヤモンド・オンライン - 新着記事	年収が低い会社ランキング【平均年齢40代後半】1位は老舗百貨店、ポプラ、イオン九州も - ニッポンなんでもランキング！	https://diamond.jp/articles/-/303209	上場企業	2022-05-16 04:20:00
ビジネス	ダイヤモンド・オンライン - 新着記事	年収が低い会社ランキング【平均年齢40代後半・200社完全版】 - ニッポンなんでもランキング！	https://diamond.jp/articles/-/303200	上場企業	2022-05-16 04:20:00
ビジネス	ダイヤモンド・オンライン - 新着記事	ラーメン二郎はなぜ取材拒否に？ジロリアンが愛する「数々の伝説」を徹底検証 - News&Analysis	https://diamond.jp/articles/-/302613	ラーメン二郎はなぜ取材拒否にジロリアンが愛する「数々の伝説」を徹底検証NewsampampAnalysis今年月、山盛りの麺と野菜で有名な「ラーメン二郎」のドキュメンタリー番組が放送された。	2022-05-16 04:15:00
ビジネス	ダイヤモンド・オンライン - 新着記事	20年ぶり1ドル＝130円ショック、「円の弱体化」を招いた6大悪循環 - 今週の週刊ダイヤモンド　ここが見どころ	https://diamond.jp/articles/-/303116	年ぶりドル円ショック、「円の弱体化」を招いた大悪循環今週の週刊ダイヤモンドここが見どころ年ぶりのドル円ー。	2022-05-16 04:10:00
ビジネス	ダイヤモンド・オンライン - 新着記事	高速バス大手が「ちょいのり」事業参入、苦境ローカル線の救世主になるか - News&Analysis	https://diamond.jp/articles/-/303199	communitymobility	2022-05-16 04:05:00
ビジネス	不景気.com	山口・長門の老舗ホテル「枕水」に破産決定、負債5億円 - 不景気com	https://www.fukeiki.com/2022/05/chinsuikan.html	山口県長門市	2022-05-15 19:14:03
ビジネス	東洋経済オンライン	仕事に価値を見出せない人に共通する三大悪習慣 苦しんでメンタルダウンする人が増えている | ワークスタイル | 東洋経済オンライン	https://toyokeizai.net/articles/-/585827?utm_source=rss&utm_medium=http&utm_campaign=link_back	東洋経済オンライン	2022-05-16 04:50:00
ビジネス	東洋経済オンライン	名鉄が再開発､｢ジャズ｣でどうする家康のまち 東岡崎駅の南北に2つのビル建設し街を活性化 | 駅･再開発 | 東洋経済オンライン	https://toyokeizai.net/articles/-/588947?utm_source=rss&utm_medium=http&utm_campaign=link_back	名古屋鉄道	2022-05-16 04:30:00
海外TECH	reddit	This is how I solved my P90 feed issues.	https://www.reddit.com/r/airsoft/comments/uqcyfn/this_is_how_i_solved_my_p90_feed_issues/	This is how I solved my P feed issues submitted by u TerryRistt to r airsoft link comments	2022-05-15 19:02:54