投稿時間:2023-08-19 20:11:55 RSSフィード2023-08-19 20:00 分まとめ(15件)

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ROBOT	ロボスタ	全高4.5mの搭乗できる変形ロボット「アーカックス」を公開　SFやアニメが現実に！まずは限定5台で販売開始　ツバメインダストリ	https://robotstart.info/2023/08/19/archax-unveiled.html	全高mの搭乗できる変形ロボット「アーカックス」を公開SFやアニメが現実にまずは限定台で販売開始ツバメインダストリシェアツイートはてブツバメインダストリが開発を進めている身長mの搭乗できる変形ロボット「アーカックス」ARCHAXが年月日、報道陣に公開され、発売開始のアナウンスがあった。	2023-08-19 10:00:11
IT	ITmedia 総合記事一覧	[ITmedia News] 全高4.5mの搭乗型ロボット「アーカックス」、日本で販売へ　価格は4億円　エアコン完備で夏場もOK	https://www.itmedia.co.jp/news/articles/2308/19/news065.html	itmedia	2023-08-19 19:07:00
TECH	Techable（テッカブル）	モルフォ、AIデータプラットフォーム「FastLabel」導入。AI開発で重要なアノテーション作業を効率化	https://techable.jp/archives/217390	fastlabel	2023-08-19 10:00:08
AWS	AWSタグが付けられた新着投稿 - Qiita	【AWS】Amazon SQS	https://qiita.com/sakuchi/items/fc37f24d3587c9dc7254	amazonsqs	2023-08-19 19:08:07
Ruby	Railsタグが付けられた新着投稿 - Qiita	Railsの`find`と`find_by`メソッドの違い	https://qiita.com/Gaku_RUNTEQ/items/42668437ea97fec4acbe	useruserfind	2023-08-19 19:29:10
海外TECH	MakeUseOf	How to Split a Huge CSV Excel Spreadsheet Into Separate Files	https://www.makeuseof.com/tag/how-to-split-a-huge-csv-excel-workbook-into-seperate-files/	How to Split a Huge CSV Excel Spreadsheet Into Separate FilesOne of Microsoft Excel s shortcomings is the limited size of a spreadsheet If you need to make your Excel file smaller or split a large CSV file read on	2023-08-19 10:45:24
海外TECH	MakeUseOf	Everything You Need to Know About HDMI Alt Mode and USB Type-C	https://www.makeuseof.com/tag/everything-need-know-hdmi-alt-mode-usb-type-c/	Everything You Need to Know About HDMI Alt Mode and USB Type CThe new HDMI Alt Mode standard will allow phones and tablets to stream directly to monitors and TVs using USB C to HDMI cables Here s all you need to know about it	2023-08-19 10:30:24
海外TECH	MakeUseOf	The 3 Reasons BlackBerry Failed Spectacularly—and Why They Might Rise Again	https://www.makeuseof.com/the-reasons-blackberry-failed-spectacularlyand-why-they-might-rise-again/	highs	2023-08-19 10:15:22
海外TECH	DEV Community	Mobile App Update - Day 95	https://dev.to/shreyvijayvargiya/mobile-app-update-day-95-olo	Mobile App Update Day Happy Saturday peopleYesterday I did something new to make out mobile app much stronger and less prone to crashes and bugs It s simple in order to be sure that your code or application works well we first need to be sure about what things might go wrong For example the following can be reasons why your app can crashUndefined props or key value pairs Typescript can handle this easilyThird party API response with or status code errorsEntire app or one component of the app goes into unprecedented states that we also can t understand how it is possible XState can solve this problemIn built API methods using vanilla JS might fail try and catch will avoid these unnecessary crashesDDOS and other attacks using third party like AsyncStorage will save sensitive credentialsTo be secure about UI bugs and crashes I ve always used Error boundary try catch statesTo be secure about APIs inbuilt and third party I ve written a separate mock API to test all the app s APIs in one go basically called a health checkup I just run one command that runs all the APIs used in the app and returns the output if the output is as expected everything is working fine This approach helps me to debug my crashes or bugs easily because I ll always be aware in prior about the bug whether the bug is related to API or user interface In future I plan to write Github actions to invoke the API health checkup method every time in advance to upload the app and since we are using a single repository as a backend and frontend we as a company developers will always know whenever our API goes wrong or failed This is quite a unique approach that helps me to be sure about the app bugs and crashes I hope this helps me and the entire company to be able to handle K daily active users on the app Expecting the daily active users to increase in future we might have to add more complicated test rules and cases and automate the process of having health checkups including UI checkups for our app Sharing the image below of how the app looks in the simulator so far wallet functionality is under development rest of the things will be picked once the design is frozen Keep developingShreyiHateReading	2023-08-19 10:18:07
海外TECH	DEV Community	JavaScript Tricky Interview Questions 2023	https://dev.to/mainulspace/javascript-tricky-interview-questions-2023-14li	JavaScript Tricky Interview Questions A developer interview without JavaScript questions That s hard to believe And it s not surprising tricky questions are asked from a few common categories in multiple interviews But why do interviewers ask these questions Because they often arise in real world situations Here s how Type Coercion in Web DevelopmentUnderstanding type coercion is pivotal while building web applications especially during string manipulations and URL formations What output would you expect console log console log console log console log Answer Empty string object Object In browsers due to peculiarities of the unary operator NaNJavaScript type coercion can give unexpected results especially with complex types like arrays and objects Precision Dilemma in Financial AppsEven a slight discrepancy can lead to significant issues when working on finance based applications Is equal to console log Answer falsePrecision issues with floating point arithmetic means results in a number slightly more than JavaScript s Automatic Semicolon InsertionHave you ever thought why a function that seemed to work correctly gave you unexpected results The behavior of semicolons in JavaScript might be the culprit What does the following function return function getNumber return value console log getNumber Answer undefinedAutomatic Semicolon Insertion causes the return to be treated as a standalone statement so the function returns undefined Variable Hoisting MysteriesA deep grasp of hoisting is vital especially when initializations don t behave as expected Can you figure out what s wrong var x var girl function console log x var x girl Answer undefinedDue to variable hoisting the variable x inside the function is declared but not initialized when console log is executed Therefore its value is undefined Tricky Increment OperationsSimple arithmetic can sometimes confound developers Can you predict the output var num function fun num num console log num fun Answer The function first adds to num resulting in and then decrements it by Elusive CommaWhen writing a script for sequential data processing it is sometimes important to know how to do more than one thing on a single line Do you know how it evaluates its operands var val console log val Answer The comma operator evaluates each of its operands and returns the value of the last one Scope in Large Scale ApplicationsWhen dealing with large applications using multiple libraries correctly scoping variables becomes crucial Consider the following code var b function foo var b console log b console log b Answer The IIFE Immediately Invoked Function Expression has its own scope and the variable b inside foo does not affect the outer variable b Context Handling in Modern Web FrameworksIn modern web app development especially with frameworks like React maintaining context for callbacks is essential Why might this callback lose its context let obj value hello print function callback callback function sayValue console log this value obj print sayValue Answer undefinedThe sayValue function is called without context so this value doesn t refer to obj value Order Matters in Script LoadingWhen building with a plugin based architecture the way in which scripts are loaded becomes very important Can you figure out what the problem is with this code function bar return foo foo function foo var foo console log typeof bar Answer functionDue to hoisting the function declaration of foo is moved to the top above the return statement making it the value that gets returned Handling Sparse Arrays in Reservation SystemsSparse arrays may be a concern when designing systems such as theater seat reservations How does JavaScript handle sparse arrays in this example var a a console log a Answer undefinedThe array a now has a length of but only indices and have values All others are undefined Parsing Operations in Dynamic FormsIn dynamic survey forms data operations based on user input can become tricky Can you explain the output let arr let res arr map parseInt console log res Answer NaN NaN map passes three arguments to the callback currentValue index array parseInt can take two arguments string and radix which causes unexpected results CMS and Variable AssignmentsWorking within a CMS may require on the fly variable definitions based on user inputs What s the output of this code let a b console log a typeof b Answer number The value of b is set to and then subtracted leaving a as and b as a number Temporal Dead ZonesFrameworks like React and Vue require a clear understanding of block scoping What would this code output and why console log typeof undeclaredVariable console log typeof y let y Answer undefined Throws a ReferenceErrorEven though let and const declarations are hoisted they re not initialized causing a temporal dead zone Shared State in UI ComponentsWhile creating UI libraries ensuring individual components don t share unintended state is critical What will the following code log let arr new Array fill arr push console log arr Answer The same reference to the array is filled in all positions Modifying one modifies all Destructuring in API ResponsesDestructuring can simplify data extraction when working with API responses Can you explain the result of this destructuring operation let x x y x console log y Answer Here x is matched with a property in the object and then y is assigned the value of x JavaScript remains a cornerstone in the developer s toolkit with its nuances often serving as gateways to deeper understanding As you prepare for interviews remember that these tricky questions are not just about memorization but about grasping the essence of the language By diving deep into such challenges you not only prepare for potential interviews but also enrich your JavaScript proficiency Best of luck and keep coding	2023-08-19 10:06:52
ニュース	BBC News - Home	Sara Sharif murder inquiry: Searches continue for father of 10-year-old	https://www.bbc.co.uk/news/uk-england-surrey-66554083?at_medium=RSS&at_campaign=KARANGA	urfan	2023-08-19 10:10:39
ニュース	BBC News - Home	Storm Betty: Disruption due to flooding and fallen trees	https://www.bbc.co.uk/news/uk-northern-ireland-66553551?at_medium=RSS&at_campaign=KARANGA	extra	2023-08-19 10:21:34
ニュース	BBC News - Home	Sweden beat Australia to finish third at World Cup	https://www.bbc.co.uk/sport/football/66543416?at_medium=RSS&at_campaign=KARANGA	Sweden beat Australia to finish third at World CupKosovare Asllani s stunning second half strike seals victory for Sweden as they beat Australia to finish third at the Women s World Cup at Brisbane Stadium	2023-08-19 10:49:44
ニュース	BBC News - Home	Women's World Cup 2023: Kosovare Asllani scores 'brilliant' goal to double Sweden lead	https://www.bbc.co.uk/sport/av/football/66554130?at_medium=RSS&at_campaign=KARANGA	Women x s World Cup Kosovare Asllani scores x brilliant x goal to double Sweden leadSweden s Kosovare Asllani scores a brilliant goal to double her side s lead as they face co hosts Australia in the third place play off at the Women s World Cup	2023-08-19 10:01:15
ニュース	Newsweek	「特権階級的」「現実離れ」...米女性セレブが投稿したセクシーな「シースルー衣装」写真に非難が殺到	https://www.newsweekjapan.jp/stories/culture/2023/08/post-102455.php		2023-08-19 19:18:00