| IT |
気になる、記になる… |
｢Xプレミアム｣に登録すると｢X｣ロゴの紙吹雪が表示されるように |
https://taisy0.com/2023/08/31/176061.html
|
xnewsdaily |
2023-08-30 23:03:35 |
| IT |
ITmedia 総合記事一覧 |
[ITmedia ビジネスオンライン] 御堂筋・谷町・四つ橋・中央・千日前 5路線がつながる「秘密のレール」 |
https://www.itmedia.co.jp/business/articles/2308/31/news098.html
|
itmedia |
2023-08-31 08:33:00 |
| Ruby |
Rubyタグが付けられた新着投稿 - Qiita |
[Rails] 真偽判定メソッド |
https://qiita.com/siakio/items/1d34d54f074522d1b82f
|
rails |
2023-08-31 08:13:50 |
| Ruby |
Railsタグが付けられた新着投稿 - Qiita |
[Rails] 真偽判定メソッド |
https://qiita.com/siakio/items/1d34d54f074522d1b82f
|
rails |
2023-08-31 08:13:50 |
| Ruby |
Railsタグが付けられた新着投稿 - Qiita |
メール送信するRailsアプリの開発環境構成 |
https://qiita.com/hane_pal_jp/items/f617f1660b6403496c3c
|
mailcatcher |
2023-08-31 08:12:08 |
| 技術ブログ |
Developers.IO |
S3 Concatを使ってS3上にある大量の小さいオブジェクトを圧縮してファイルサイズを最適化しよう |
https://dev.classmethod.jp/articles/optimize-files-with-s3-concat/
|
amazon |
2023-08-30 23:30:11 |
| 技術ブログ |
Developers.IO |
Amazon Kendra のメタデータの配置場所について教えてください |
https://dev.classmethod.jp/articles/tsnote-kendra-please-tell-me-where-amazon-kendras-metadata-is-located/
|
amazonkendra |
2023-08-30 23:03:25 |
| 海外TECH |
Ars Technica |
Dog autism? 37% of US dog owners buy into anti-vaccine nonsense |
https://arstechnica.com/?p=1964573
|
autism |
2023-08-30 23:07:31 |
| 海外TECH |
DEV Community |
Type Casting with TypeScript: A tutorial |
https://dev.to/alakkadshaw/type-casting-with-typescript-a-tutorial-cg9
|
Type Casting with TypeScript A tutorialType Casting is an important technique and technology especially in TypeScript TypeScript is a SuperSet of JavaScript that has strong typesafety and potential for catching errors during compiling rather then when the program is run Here are some of the reasons why Type Casting is important in TypeScript Working with Complex TypesWorking with legacy JavaScript LibrariesWorking with unknown types Ability to do easy type maipulationCreating Type Guard functions Working with Complex TypesTo understand the intended data type it is important to TypeCast one type into another This is true when working with nested data types or complex data typesThis way the developer can say what type they are expecting to the compiler When working with complex data types and deeply nested data declaring the data types like this helps the compiler compile faster and increases productivity Working with legacy Javascript LibrariesIf you want to ensure type safety and prevent run time errors in legacy JavaScript libraries that were not written in TypeScriptYou can do this by TypeCasting expected types and ensure safety of your code Working with unknown typesWhen parsing JSON data or working with an external API you might encounter unknown types With Type Casting you can specify the expected type of value thus making it easy to maintain and performant code Ability to do easy type manipulationWith technologies like conditional types and mapped types you can easily and efficiently do TypeCasting reducing redundancy and maintaining type safety thus making the code more expressive Creating Type Guard FunctionsWith TypeScript you can create custom Type Guard functions with the isType operator Type casting helps assert if a given value is of a type that we are expecting it to be Then If it is of the type we want it to be we can use the value in the next process or if the assert fails then we can think of what to do with the value Basics of Type Casting Explicit Vs Implicit Type Casting What is Implicit Type Casting TypeScript might sometimes convert a value from one type to another this usually happens in an assignment to a function call The TypeScripts type checker automatically determines the inferred type of the given value and there is no manual intervention by the developerLet us consider an examplelet stringValue string let numberValue number stringValue as unknown as number Double Casting is done here causing implicit conversion What is Explicit Type Casting Explicit Type casting is when the developer performs the type conversion intentionally thus the developer explicitly provides the typeTypeScript offers ways a developer might do thisUsing the Angle BraceletsUsing the as Keyword Angle Brackets and the as KeywordTo cast a value to another type in TypeScript you need to place the type to cast in Angle Brackets followed by the value to castlet us look at an examplelet someValue any Some String Value let strLength number lt string gt someValue length This method is an older way to type cast in TypeScript Let us look at another modern may to Type Cast and that is Using the as Keywordthe as keyword was added in typescript as a way to Type Cast This method is easy to use and more readable as well The Older Angle Brackets method could also conflict with JSX and hence the as keyword is the prefferred way of Type Casting in TypeScriptLet us consider an examplelet someValue any This is a random string let strLength number someValue as string length No Matter which method you use to typecast the TypeScript will ensure that the cast is valid and permitted TypeScript will always look to maintain Type safety Using Type Casting incorrectly can cause errors Examples A Custom Type GuardWhat are Type Guards Type Guards are functions These functions narrow the scope of the given value to a perticular typeThis enables the typescript to differentiate between types Creating custom type guards allows the developer to perform custom checks on the value and return a boolean type determining as to what the expected value of the type islet us look at an exampleclass Individual constructor public name string public age number class Car constructor public make string public model string function isIndividual obj any obj is Individual return obj instanceof Individual const someItem new Individual Jo if isIndividual someItem TypeScript will recognw someItem as Individual within this scope console log someItem name else console log This Object is not an Individual object Casting in Functional ProgrammingWhat is functional Programming Functional Programming means having functional principles such as immutability higher order functions etcTo write maintainable and predictable code Type Casting can also be done with functional programming methodology in typescriptLet us fo Type Casting with map functiontype Circle kind circle radius number type Square kind square sideLength number type Shape Circle Square const shapes Shape kind circle radius kind square sideLength Writing a function to calculate a shape s area depending in the what kind it isfunction area shape Shape number if shape kind circle return Math PI shape radius else return shape sideLength const areas number shapes map shape gt area shape We are using conditional and mapped types to perform advanced Type Casting We are also ensuring type safe while performing advanced type castingLet us learn some more about the advanced techniques and technologies in the next section Advanced techniquesThere are techniques that we are going to learn today Reflection and runtime type metadata using consitional and mapped typesBoth these types are explained in detail below with examples Reflection and runtime metadataTypeScritpt be default provides type checking at compile time If you need more dynamic type checking during run time you can use decorators and libraries such as reflect metadata Reflection involves checking the data stucture of the type at runtimelet us consider an example using the reflect matadataimport reflect metadata class User constructor public name string public age number function logType target Object key string const targetType Reflect getMetadata design type target key console log key has type targetType name class MyClass logType public user User const instance new MyClass Using Conditional Types and Mapped Types for advanced casting Conditional typesdefining types based on a perticular condition is known as Conditional types in TypeScriptThis article is brought to you by DeadSimpleChat Chat API and SDK for your website and app The condition types have a particular syntax and that isT extends U X YWhich means if T extends you then the type is X otherwise it is Y type IsString lt T gt T extends string true false type StringCheck IsString lt string gt true type NumberCheck IsString lt number gt false Mapped typesYou can iterate over existing types and modify their properties as needed to create new typesFor example We can create different versions of the same type that is read onlytype Readonly lt T gt readonly K in keyof T T K interface Person name string age number type ReadonlyPerson Readonly lt Person gt const person ReadonlyPerson name Alice age The following code would throw a compile time error person age Using conditional and mapped types we can do complex Type Casting with TypeScriptTypeScript empowers developers with tools such as reflection and runtime metadata conditional and mapped types and ensures type safety throughout your code Examples Real life Examples and use cases for better understanding Safely Parsing JSON Using JavaScript s built in JSON parse functionIn this example we will be using type casting to check the type of Object parse by the function JSON parseJavaScript s built in function JSON parse can parse a JSON string into a JavaScript ObjectHowever TypeScript does not know what is the type of object parsed by the JSON parse functionWe will be using Type Casting to provide the correct type informationconst individualInformation name John Doe age const parsedJSON JSON parse individualInformation Custom Type Casting functionNext we will be creating a custom guard function to validate the structure of JSON that is parsed with JSON parse functioninterface Individual name string age number function isIndividual obj any obj is Individual return typeof obj object amp amp obj null amp amp typeof obj name string amp amp typeof obj age number Now we have created a custom function that we can use to assert the type of JSON that was parsed by JSON parse function Asserting Type of the parsed JSONLet us now assert that the JSON parsed by the JSON parse Object is of a particular type or not const IndividualInformation name Joe age const parsedJSON JSON parse IndividualInformation if isIndividual parsedJSON const individual Individual parsedJSON console log Hi I am individual name and I am individual age years old else console error The JSON string does not represent a Individual object In this above example we are using a custom guard function isIndividual to check that the parsed JSON is of the type IndividualThe Individual Object here is serving as an implicit type cast and maintains safty and code integrity Transform API ResponsesIn this example we will be transforming JSON API responses with a utility function and using type manipulation techniques to achieve type safetyAs a sample api we will be using the JSON placeholder websites todos apiThis endpoint returns the following data userId id title delectus aut autem completed false Creating the function to fetch the data from the APIWe are going to create a function that would fetch the data from the todos endpointasync function fetchTodos const response await fetch const todos await response json return todos Creating a utility function to handle JSON responsesWe know that it is not guaranteed that the JSON responses we recieve from the endpoint are not always going to be in the structure or format that we require them to beWe can create a utility function that checks and narrows the type of response using a Type check functioninterface Todo userId number id number title string completed boolean function isTodoArray obj any obj is Todo return Array isArray obj amp amp obj every isTodo function isTodo obj any obj is Todo return typeof obj object amp amp obj null amp amp typeof obj userId number amp amp typeof obj id number amp amp typeof obj title string amp amp typeof obj completed boolean Ensure type safety with advanced type manipulationWe are going to handle the JSON responses using the utility functionasync function main const fetchedTodos await fetchTodos if isTodoArray fetchedTodos typescript will recognise the const todos Todo fetchedTodos Advanced type manipulation Extract only completed todos const completedTodos todos filter todo gt todo completed console log Completed Todos completedTodos else console error API response does not match expected structure main catch error gt console error An error occurred error In the above example we are using the fetched data from the JSON placeholder website and using a utility function to check the JSON response and assert the type of JSON using a function Potential Pitfalls and Common Mistakes Need Chat API for your website or appDeadSimpleChat is an Chat API providerAdd Scalable Chat to your app in minutes Million Online Concurrent users UptimeModeration features ChatGroup ChatFully CustomizableChat API and SDKPre Built Chat ConclusionIn this article we learned about TypeCasting in TypeScriptWe learned about the imporatance of TypeCasting and what are the basic principles of typecasting real world application and other things that are required in TypeCasting with TypeScript like safety and implicit and explicit type castingWe covered modern technologies and demonstrated real life examples using JSON and API responsesI hope you liked the article and thank you for reading |
2023-08-30 23:53:22 |
| 海外TECH |
Engadget |
Clearblue's cheap menopause test fills a hole in the at-home health market |
https://www.engadget.com/clearblues-cheap-menopause-test-fills-a-hole-in-the-at-home-health-market-230039337.html?src=rss
|
Clearblue x s cheap menopause test fills a hole in the at home health marketClearblue has launched a new product that can determine what stage of menopause a person is in The Menopause Stage Indicator is a urine testing device and it s the company s first for this underserved market in women s health The Menopause Stage Indicator looks like a standard pregnancy test stick but instead of measuring urine for pregnancy hormones it will look for follicle stimulating hormone FSH levels which are measured to confirm menopause To get accurate test results you ll have to conduct five urine tests over ten days and Clearblue recommends they be taken every other day Using FSH levels menstrual cycle history and a person s age the company will be able to determine and confirm the menopause stage The app will calculate if a person is in premenopause early perimenopause late perimenopause or postmenopause In its press release Clearblue acknowledges that only a healthcare professional can confirm someone s menopause stage However through the app you can generate a personalized report and share it with your healthcare provider to confirm test results and discuss potential treatment options The Menopause Stage Indicator will be available on Amazon for a starting price of Women s health has long been cast aside as a mere subset of healthcare And it s even worse for aging people entering menopause The market for a menopause testing device by Clearblue a brand most famous for its pregnancy tests is prime for the taking Studies show that percent of women experience menopause but do not seek treatment for their symptoms and the global menopause market size is projected to grow to billion by This article originally appeared on Engadget at |
2023-08-30 23:00:39 |
| 海外科学 |
BBC News - Science & Environment |
Florida takes stock in Storm Idalia's aftermath |
https://www.bbc.co.uk/news/world-us-canada-66654107?at_medium=RSS&at_campaign=KARANGA
|
georgia |
2023-08-30 23:37:04 |
| 海外科学 |
BBC News - Science & Environment |
Beekeepers to the rescue after 5 million bees fall off truck in Canada |
https://www.bbc.co.uk/news/world-us-canada-66666687?at_medium=RSS&at_campaign=KARANGA
|
homeless |
2023-08-30 23:24:29 |
| 金融 |
金融総合：経済レポート一覧 |
FX Daily（8月29日）～労働市場の逼迫緩和でドル円急落 |
http://www3.keizaireport.com/report.php/RID/550069/?rss
|
fxdaily |
2023-08-31 00:00:00 |
| 金融 |
金融総合：経済レポート一覧 |
中国の信託会社の最近の状況について：神宮健のFocus on 中国金融経済 |
http://www3.keizaireport.com/report.php/RID/550071/?rss
|
focus |
2023-08-31 00:00:00 |
| 金融 |
金融総合：経済レポート一覧 |
Quick経営トレンド：人事の現場で活きる法令実務Tips～勤労者皆保険への取り組み（1）～社会保険適用拡大の動きとこれから |
http://www3.keizaireport.com/report.php/RID/550072/?rss
|
quick |
2023-08-31 00:00:00 |
| 金融 |
金融総合：経済レポート一覧 |
【挨拶】わが国の経済・物価情勢と金融政策 道東地域金融経済懇談会における挨拶要旨 日本銀行政策委員会審議委員 田村直樹 |
http://www3.keizaireport.com/report.php/RID/550074/?rss
|
日本銀行 |
2023-08-31 00:00:00 |
| 金融 |
金融総合：経済レポート一覧 |
勤労者短観からみた就業調整と第3号被保険者の動向について（上） |
http://www3.keizaireport.com/report.php/RID/550101/?rss
|
被保険者 |
2023-08-31 00:00:00 |
| 金融 |
金融総合：経済レポート一覧 |
2023年第2四半期地価LOOKレポート公表～上昇地区割合は2期連続で9割超...：マーケットレポート |
http://www3.keizaireport.com/report.php/RID/550107/?rss
|
三井住友トラスト |
2023-08-31 00:00:00 |
| 金融 |
金融総合：経済レポート一覧 |
J-REIT市場の投資環境～中国人団体旅行解禁でさらなる回復が期待されるホテルセクター：マーケットレター |
http://www3.keizaireport.com/report.php/RID/550108/?rss
|
jreit |
2023-08-31 00:00:00 |
| 金融 |
金融総合：経済レポート一覧 |
国内銀行の資産・負債等（銀行勘定）（2023年7月末） |
http://www3.keizaireport.com/report.php/RID/550109/?rss
|
日本銀行 |
2023-08-31 00:00:00 |
| 金融 |
金融総合：経済レポート一覧 |
なるほど！ザ・ファンド【Vol.178】⽶国社債に投資する場合、為替ヘッジを⾏った⽅がよいですか︖ |
http://www3.keizaireport.com/report.php/RID/550110/?rss
|
三井住友 |
2023-08-31 00:00:00 |
| 金融 |
金融総合：経済レポート一覧 |
改めて新年度入り後のPBR1倍割れ銘柄群の動きを検証する：市川レポート |
http://www3.keizaireport.com/report.php/RID/550111/?rss
|
三井住友 |
2023-08-31 00:00:00 |
| 金融 |
金融総合：経済レポート一覧 |
KAMIYAMA Seconds!：日本株は秋に下がるというのは本当か？ |
http://www3.keizaireport.com/report.php/RID/550112/?rss
|
kamiyamaseconds |
2023-08-31 00:00:00 |
| 金融 |
金融総合：経済レポート一覧 |
レンジ相場とは異なる足元の円安・ドル高の背景 |
http://www3.keizaireport.com/report.php/RID/550119/?rss
|
住友商事 |
2023-08-31 00:00:00 |
| 金融 |
金融総合：経済レポート一覧 |
なるほど！ザ・ファンド 【Vol.177】今後の⽶国社債利回りの⾒通しは︖ |
http://www3.keizaireport.com/report.php/RID/550121/?rss
|
三井住友 |
2023-08-31 00:00:00 |
| 金融 |
金融総合：経済レポート一覧 |
総選挙に向けて「政争の道具」になりつつあるニュージーランド中銀～物価抑制に手間取るなかで与野党双方から注文、直接的な影響は限定的も総裁人事には要注目：Asia Trends |
http://www3.keizaireport.com/report.php/RID/550127/?rss
|
asiatrends |
2023-08-31 00:00:00 |
| 金融 |
金融総合：経済レポート一覧 |
リサーチ費用アンバンドリング緩和の動き～日本の資産運用業高度化に向けたもうひとつの課題：資産運用・投資主体 |
http://www3.keizaireport.com/report.php/RID/550128/?rss
|
大和総研 |
2023-08-31 00:00:00 |
| 金融 |
金融総合：経済レポート一覧 |
【第119回】学校・職場等での「金融経済教育」を巡り浮上する課題とその対応（３）FOR FINANCIAL WELL-BEING 政府・金融機関が果たすべき役割は？ |
http://www3.keizaireport.com/report.php/RID/550149/?rss
|
forfinancialwellbeing |
2023-08-31 00:00:00 |
| 金融 |
金融総合：経済レポート一覧 |
金融政策運営の改善に向けた中央銀行改革の方向性～豪政府による豪中銀レビューとわが国への示唆：リサーチ・レポート No.2023-008 |
http://www3.keizaireport.com/report.php/RID/550158/?rss
|
中央銀行 |
2023-08-31 00:00:00 |
| 金融 |
金融総合：経済レポート一覧 |
令和3年度 介護保険事業状況報告（年報） |
http://www3.keizaireport.com/report.php/RID/550160/?rss
|
保険事業 |
2023-08-31 00:00:00 |
| 金融 |
金融総合：経済レポート一覧 |
タカ派的現状維持：「曇り空」の下での資産配分とは？：Caron's Corner |
http://www3.keizaireport.com/report.php/RID/550172/?rss
|
caronxscorner |
2023-08-31 00:00:00 |
| 金融 |
金融総合：経済レポート一覧 |
【マーケットを語らず Vol.122】米金利上昇、財政赤字、FRBの赤字；「潤沢準備預金制度（Ample Reserve System）へのレジーム移行」は誰が決めたのかを知りたい。 |
http://www3.keizaireport.com/report.php/RID/550179/?rss
|
amplereservesystem |
2023-08-31 00:00:00 |
| 金融 |
金融総合：経済レポート一覧 |
【注目検索キーワード】トランジション・ファイナンス |
http://search.keizaireport.com/search.php/-/keyword=トランジション・ファイナンス/?rss
|
検索キーワード |
2023-08-31 00:00:00 |
| 金融 |
金融総合：経済レポート一覧 |
【お薦め書籍】1300万件のクチコミでわかった超優良企業 |
https://www.amazon.co.jp/exec/obidos/ASIN/4492534628/keizaireport-22/
|
転職 |
2023-08-31 00:00:00 |
| ニュース |
BBC News - Home |
Florida takes stock in Storm Idalia's aftermath |
https://www.bbc.co.uk/news/world-us-canada-66654107?at_medium=RSS&at_campaign=KARANGA
|
georgia |
2023-08-30 23:37:04 |
| ニュース |
BBC News - Home |
Police officers to face quicker sackings for misconduct in England and Wales |
https://www.bbc.co.uk/news/uk-66662865?at_medium=RSS&at_campaign=KARANGA
|
rogue |
2023-08-30 23:56:12 |
| ニュース |
BBC News - Home |
Nitrous oxide: Laughing gas ban could harm users, experts warn |
https://www.bbc.co.uk/news/uk-66660760?at_medium=RSS&at_campaign=KARANGA
|
medical |
2023-08-30 23:48:25 |
| ニュース |
BBC News - Home |
US Open 2023: Andy Murray 'playing best’ since hip operation |
https://www.bbc.co.uk/sport/tennis/66666807?at_medium=RSS&at_campaign=KARANGA
|
US Open Andy Murray x playing best since hip operationAndy Murray believes he is playing his best tennis since hip surgery as he prepares to face old rival Grigor Dimitrov in the US Open second round |
2023-08-30 23:06:31 |
| ビジネス |
ダイヤモンド・オンライン - 新着記事 |
デンソー、EV時代への備えは万端 - WSJ発 |
https://diamond.jp/articles/-/328492
|
時代 |
2023-08-31 08:03:00 |
| ビジネス |
東洋経済オンライン |
トップは｢決断｣ではなく｢臆測｣でモノを言う 間違いが判明したとき修正できる人は｢まれ｣ | リーダーシップ・教養・資格・スキル | 東洋経済オンライン |
https://toyokeizai.net/articles/-/694447?utm_source=rss&utm_medium=http&utm_campaign=link_back
|
不確実性 |
2023-08-31 08:30:00 |
| マーケティング |
MarkeZine |
消費者と企業の「問い合わせチャネル」に対する認識のギャップとは？ 実態との乖離から紐解くCX改善の鍵 |
http://markezine.jp/article/detail/43143
|
消費者と企業の「問い合わせチャネル」に対する認識のギャップとは実態との乖離から紐解くCX改善の鍵ナイスジャパンはこのほど、消費者と企業双方におけるCXの変化に関する調査結果を発表した。 |
2023-08-31 08:30:00 |
| マーケティング |
MarkeZine |
利益向上に紐付くデジタルシフトの成功要因／いかに迅速かつ効率的に進めるか【参加無料】 |
http://markezine.jp/article/detail/43281
|
参加無料 |
2023-08-31 08:30:00 |
| マーケティング |
MarkeZine |
[事例紹介あり]AIで実現するハイパーパーソナライゼーション 顧客の期待に応えるブランドになる方法論 |
http://markezine.jp/article/detail/43312
|
顧客 |
2023-08-31 08:15:00 |
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