投稿時間:2023-08-30 00:17:40 RSSフィード2023-08-30 00:00 分まとめ(20件)

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AWS	AWSタグが付けられた新着投稿 - Qiita	なんとかGWとENIはどうちがうんだろう？─インフラ素人がものすごく浅〜くまとめたメモ	https://qiita.com/mizukyf/items/029657d6f5947275b889	関連	2023-08-29 23:29:48
Git	Gitタグが付けられた新着投稿 - Qiita	【Git】git diff で変更した差分を確認する方法	https://qiita.com/div_tomo/items/6aeba4697b0b9f6050cd	gitdiff	2023-08-29 23:34:19
技術ブログ	Developers.IO	[レポート]Security-JAWS DAYS ~Day2~ に参加しました。一部writeupあり。 #secjaws #secjaws30 #jawsug #secjawsdays	https://dev.classmethod.jp/articles/2023-security-jaws-days-day2/	becominn	2023-08-29 14:48:59
海外TECH	MakeUseOf	7 Outdoor Tech Jobs That Pay Well	https://www.makeuseof.com/high-paying-outdoor-tech-jobs/	outdoor	2023-08-29 14:31:24
海外TECH	MakeUseOf	10 Unique Features of the 2023 Hyundai Ioniq 6	https://www.makeuseof.com/2023-hyundai-ioniq-6-features/	electric	2023-08-29 14:31:24
海外TECH	MakeUseOf	How to Use WhatsApp Status: 11 Things You Need to Know	https://www.makeuseof.com/tag/whatsapp-status-guide/	learn	2023-08-29 14:31:24
海外TECH	MakeUseOf	11 Ways to Fix a Missing Bluetooth Button in the Windows 10 Action Center	https://www.makeuseof.com/ways-to-fix-missing-bluetooth-button-windows-10-action-center/	disappears	2023-08-29 14:15:24
海外TECH	MakeUseOf	The 10 Best Beginner Projects for New Programmers	https://www.makeuseof.com/tag/beginner-programming-projects/	beginner	2023-08-29 14:00:24
海外TECH	DEV Community	Divide & Conquer (Grokking Algorithms)	https://dev.to/bhavkushwaha/divide-conquer-grokking-algorithms-7gi	Divide amp Conquer Grokking Algorithms In this article we will use Examples to explain the concept of Divide amp Conquer The First Example will be a visual one and the latter one will be a code one EXAMPLE Suppose you are a farmer with a plot of land You want to divide this farms evenly into square plots You want the plots to be as big as possible The following Constraints are present Here to solve the farmer s problem we will use Divide amp Conquer Strategy The Divide amp Conquer Strategy consists of two cases Base Case The simplest possible case Recursive Case Divid eor decrease your problem until it becomes the Base Case Now solving the Farmer s problem Let s start by marking out the bigest boxes you can use You can fit two x boxes in there and some land is still left to be divided Now apply the same algorithm to the remaining land The biggest box we can create is x m with x remaining area Now mark a box to get an even smaller segment Going for an even smaller box Hey Look we encountered the Base Case So for the original farm the biggest plot size you can use is x m EXAMPLE You are given an array of numbers You have to add all the numbers and return the total It s pretty easy to do it with a loop def sum arr total for x in arr total x return totalBut the challenge is to do it using Recursion Follow these steps to solve the problem Figure out the Base CaseThink about the simplest case Here if we get an array with or element then thats pretty easy to sum up We need to move more closer to an empty array wit hevery recursive call Now the Sum Function Works It s Principal Sum Function in Action and Recursion taking place Tip When we are writing a recursive function involving an array the base case is often an empty array with one element	2023-08-29 14:25:04
海外TECH	DEV Community	Introducing JavaScript's new "using" Keyword (for Variables)	https://dev.to/ubahthebuilder/introducing-javascripts-new-using-keyword-for-variables-1o2i	Introducing JavaScript x s new quot using quot Keyword for Variables JavaScript just added a brand new keyword for creating a variable called using This keyword is a perfect replacement for let and const in certain scenarios such as database connections and file handling Learn what the using keyword is and some smart ways you can use it in your JavaScript program This keyword will change the way you write your variables in JavaScript forever Sidenote If you re new to learning web development and you re looking for the best resource to help with that I strongly recommend HTML to React The Ultimate Guide Problematic Code ExampleThe best way to understand the using keyword is to figure out what code it s trying to solve Let s say you have a TypeScript project with a directory structure like this my ts project ┣ vscode ┣files ┃┗a txt ┣other ┣package lock json ┣package json ┣script ts ┗tsconfig jsonOpen the script ts file with a text editor and include the following code function writeFile path string const file fs openSync files path w fs writeFileSync file Text n fs closeSync file writeFile a txt This writeFile function takes in a path for the file we want to write to It opens the file writes a random text into it and closes out of that file always close a file after a write operation to avoid having any open handlers to our file On the last line we called the function and passed it “a txt as the argument Make sure you have an a txt file in the files folder before running the code When you run script ts on the terminal with the node script ts command the text will be saved inside the a txt file to indicate that the code is working Now here s the problem Let s say we have a temp txt file in the files folder and in the code we want to do nothing if the path supplied to the function is the temp file function writeFile path string const file fs openSync files path w fs writeFileSync file Text n if path includes temp return fs writeSync file Permanent fs closeSync file writeFile a txt writeFile temp txt Underneath the if condition we re to write the text “Permanent into the file if it s not the temp txt file Now if you save the file run the code and check the a txt file you ll see the “Permanent text But you won t find it in the temp txt file because of the return statement of the if condition You may think this is working just fine but there s a huge problem with the way this program works Because we re return ing halfway it doesn t actually get to the point where we re closing the file To fix this problem you need to call the closeSync method just before returning the function like so function writeFile path string const file fs openSync files path w fs writeFileSync file Text n if path includes temp fs closeSync file return fs writeSync file Permanent fs closeSync file writeFile a txt writeFile temp txt This is an easy bug to fall into because you might easily forget about the closing connection after returning early So if you have a bunch of scenarios like this where you re returning early or doing other different things you have to copy around the “closing code to every place that you re returning early Overall this can get quite complicated especially with a large codebase This is where the using keyword comes in to essentially take care of all that clean up process for you automatically The using Keyword BasicsSimply replace the const keyword with using when opening the file function writeFile path string using file fs openSync files path w other code goes here writeFile a txt writeFile tempt txt With the using keyword once the file is out of scope so you no longer have access to this variable and it s been cleaned up by the garbage collector then it ll automatically take care of all the closing and cleanups for you In order to make sure that all this syncs up properly you need to make sure the variable you re using is actually configured in the right format So let s go ahead and create a function for opening a file for us so we can do all that extra configuration behind the scenes In your project s root folder create a brand new file named openFile ts Inside this file export a function called openFile that contains pretty much takes care of the closing and cleanup import fs from fs export function openFile const file fs openSync files path w return handle file Symbol dispose console log Disposed fs closeSync file We re to return either a class or an object In the return object we also needed to specify a symbol dispose and define it as a function Now whenever your file is no longer in scope it ll call this function to automatically clean up for you Now save the file go back to your script and import the openFile function so you can use it instead of openSync Instead of writing to the file we write to its handle and in addition we no longer need to use the closing code at any place in the file import openFile from openFile function writeFile path string using file fs openFile path fs writeFileSync file handle Permanent if path includes temp return fs writeSync file handle Permanent writeFile a txt writeFile temp txt Now if you save the file and run the code you should notice that in your console it says “Disposed twice This means it s actually cleaning up your files So as soon we either call return or get to the end of the function the file defined with using is no longer in use anywhere else because it s only useable within the function As a result JavaScript is smart enough to dispose of the code and clean everything up ConclusionWith the using keyword as soon as a variable is no longer accessible i e out of scope it just completely removes it by calling the cleanup function which you have to define to return a symbol dispose function The using keyword is very important if you re performing a database connection a WebSocket connection or any other type of connection where you need to close or disconnect them this is a very clean and easy way to handle that If you re new to learning JavaScript and you re looking for the best resource to help with that check out HTML to React The Ultimate Guide	2023-08-29 14:21:29
Apple	AppleInsider - Frontpage News	Jackery Solar Generator 2000 Plus review: go off-grid with 100 pounds of portable battery	https://appleinsider.com/articles/23/08/29/jackery-solar-generator-2000-plus-review-go-off-grid-with-100-pounds-of-portable-battery?utm_medium=rss	Jackery Solar Generator Plus review go off grid with pounds of portable batteryThe Jackery Solar Generator Plus portable power station was designed with expansion capabilities in mind all while remaining impressively quiet during operation Jackery Solar Generator PlusPortable power stations are extra large portable batteries that can power everything from an iPhone to an RV The market is full of such products so finding something that fits your needs is easy Read more	2023-08-29 14:59:29
Apple	AppleInsider - Frontpage News	Daily deals Aug. 29: $48 MagSafe Battery Pack, $899 M2 MacBook Air, iPads from $126, more	https://appleinsider.com/articles/23/08/29/daily-deals-aug-29-48-magsafe-battery-pack-899-m2-macbook-air-ipads-from-126-more?utm_medium=rss	Daily deals Aug MagSafe Battery Pack M MacBook Air iPads from moreToday s hottest deals include off a Bissell Smart air purifier off a Class K frameless Roku Smart TV off a Ring Alarm home security system off an Anker Nebula solar portable projector and more Save on an M MacBook AirThe AppleInsider Deals Team scours the web for unbeatable bargains at online retailers to bring you fantastic bargains on trending tech gadgets including discounts on Apple products TVs accessories and other items We post the hottest deals daily to help you update your tech without breaking the bank Tuesday s top savings include an M MacBook Air for a refurbished Apple MagSafe Battery Pack for and more Read more	2023-08-29 14:41:12
Apple	AppleInsider - Frontpage News	Businesses increasing Apple hardware buys because of longevity & reliability	https://appleinsider.com/articles/23/08/29/apple-hardware-is-a-benefit-to-enterprise-survey-reveals?utm_medium=rss	Businesses increasing Apple hardware buys because of longevity amp reliabilityThe use of Apple hardware is beneficial in enterprise in a number of ways a survey of IT professionals and executives has determined with more businesses also buying more Mac iPad and iPhone units for use by employees Apple Business EssentialsApple has gradually been building up its enterprise offering over time which has resulted in it becoming a presence in many businesses The Apple in the Enterprise report from Kandji indicates that the growth in Apple s usage is down to a number of factors and that Apple s ecosystem viewed very positively by those who have to manage enterprise networks Read more	2023-08-29 14:18:53
海外TECH	Engadget	iRobot's Roomba 694 robot vacuum drops back to $179	https://www.engadget.com/irobots-roomba-694-robot-vacuum-drops-back-to-179-144038815.html?src=rss	iRobot x s Roomba robot vacuum drops back to iRobot is running another sale on Roomba robot vacuums and Braava robot mops which includes the Roomba back down to We ve seen this deal pop up periodically over the past several months but it s still below the vacuum s typical street price Outside of a very brief drop to last November it matches the lowest price we ve tracked The Roomba itself is the top pick in our guide to the best budget robot vacuums It s an entry level model that navigates around a room semi randomly instead of mapping and following set paths so it s not the most efficient cleaner and it ll bonk into furniture around your house That said it s sturdily built and we found it to work effectively across hard floors and carpet We re particularly fond of iRobot s companion app which makes it easy to quickly stop or start the vacuum set a cleaning schedule check the battery and the like You don t need to connect to WiFi to use the device however iRobot says the Roomba can run for up to minutes before it has to roll back to its charging dock though you ll get worse battery life depending on what floor surfaces you need to clean nbsp A simpler device like this won t be as effective if you live in a particularly large home but if you just want a no frills option at a reasonable rate we ve found the Roomba to be durable and dependable And if something ever does break replacement parts are readily available nbsp If you re willing to pay up for a more feature rich model the sale also brings the Roomba j down to Normally this model retails between and The j comes with a self emptying dock and more advanced mapping system than the and it can identify and swerve away from obstacles like pet waste in real time Currently it s the runner up midrange pick in our guide to the best robot vacuums Just note that like many robot vacuums with its sort of obstacle avoidance the j comes with a built in camera which may raise privacy concerns for some particularly with Amazon in the process of acquiring iRobot Follow EngadgetDeals on Twitter and subscribe to the Engadget Deals newsletter for the latest tech deals and buying advice This article originally appeared on Engadget at	2023-08-29 14:40:38
海外TECH	Engadget	TCL's new budget phones are the first to feature NXTPAPER displays	https://www.engadget.com/tcls-new-budget-phones-are-the-first-to-feature-nxtpaper-displays-143027711.html?src=rss	TCL x s new budget phones are the first to feature NXTPAPER displaysWhen TCL first unveiled NXTPAPER it said that it was designed for tablets and e readers ーnot smartphones You can disregard that comment now because the company just unveiled its first smartphone using that very display tech The TCL NXTPAPER models are budget oriented devices that promise quot industry leading eye comfort quot with mid to low range specs nbsp TCL has described NXTPAPER as a quot combination of screen and paper quot noting that it offers percent more contrast than typical E Ink displays while being percent more power efficient Its latest version delivers up to nits of brightness and supposedly exceeds TÜV certified levels of blue light reduction TCL says the tech can help protect your eye health while maintaining color accuracy and avoiding screen yellowing The screen s color temperature will adjust automatically based on the time and environment too nbsp Despite sharing a name the TCL NXTPAPER and TCL NXTPAPER G have different designs and specs The former comes with a inch FHD NXTPAPER display and has a punch hole megapixel MP front camera along with a MP rear camera It has a middling MediaTek Helio G processor GB of RAM and GB of storage expandable via a microSD card Connectivity is limited to G and it will cost € when it goes on sale in Europe in September nbsp The TCL NXTPAPER G as the name suggests offers G connectivity but other specs are oddly downgraded It s got a smaller inch HD x notch type display with an MP front camera and MP rear camera It uses MediaTek s MTv processor because it has G radios and offers GB of RAM and GB of storage also expandable It ll go on sale in Europe in October for € Both models will release globally later in Specs aside the NXTPAPER display is the differentiating feature for these smartphones Each has a mAh hour and given the power efficiency claims should go for a long while on a charge It remains to be seen if the screen will deliver a solid smartphone experience however nbsp This article originally appeared on Engadget at	2023-08-29 14:30:27
海外科学	BBC News - Science & Environment	Ministers propose scrapping pollution rules to build more homes	https://www.bbc.co.uk/news/uk-politics-66642878?at_medium=RSS&at_campaign=KARANGA	homes	2023-08-29 14:03:28
ニュース	BBC News - Home	Wilko: Redundancies suspended while rescue bids considered	https://www.bbc.co.uk/news/business-66645089?at_medium=RSS&at_campaign=KARANGA	consideredthe	2023-08-29 14:29:06
ニュース	BBC News - Home	Ministers propose scrapping pollution rules to build more homes	https://www.bbc.co.uk/news/uk-politics-66642878?at_medium=RSS&at_campaign=KARANGA	homes	2023-08-29 14:03:28
ニュース	BBC News - Home	Chess rivals settle long-running cheating dispute	https://www.bbc.co.uk/news/world-europe-66647445?at_medium=RSS&at_campaign=KARANGA	niemann	2023-08-29 14:04:06
ニュース	BBC News - Home	Hermoso kiss sparks sexism debate beyond football	https://www.bbc.co.uk/news/uk-66632652?at_medium=RSS&at_campaign=KARANGA	jenni	2023-08-29 14:03:53