| ROBOT |
ロボスタ |
スマートスピーカーから宿泊ゲストの要望を受け付けてコールセンターに接続する基本特許「クラウドコールセンター」を発表 TradFit |
https://robotstart.info/2022/05/30/tradfit-qr-cc.html
|
|
2022-05-30 02:06:46 |
| IT |
ITmedia 総合記事一覧 |
[ITmedia ビジネスオンライン] 魚に特化した書店「SAKANA BOOKS」がオープン 約1000冊の書籍や雑貨を販売 |
https://www.itmedia.co.jp/business/articles/2205/30/news087.html
|
itmedia |
2022-05-30 11:29:00 |
| TECH |
Techable（テッカブル） |
コロナ禍前の水準に迫る“人手不足”、IT人材不足も深刻。帝国データバンク調査 |
https://techable.jp/archives/179623
|
人手不足 |
2022-05-30 02:00:20 |
| AWS |
AWS - Japan |
第十八回 ちょっぴりDD - AWS への移行ステータスを一元管理。AWS Migration Hub のご紹介 |
https://www.youtube.com/watch?v=KonZEchQXvg
|
第十八回ちょっぴりDDAWSへの移行ステータスを一元管理。 |
2022-05-30 02:44:14 |
| AWS |
AWS - Japan |
第十八回 ちょっぴりDD - キャリタスUC SQL Server から Amazon Aurora PostgreSQL への移行 |
https://www.youtube.com/watch?v=WtvBFYE7Zds
|
第十八回ちょっぴりDDキャリタスUCSQLServerからAmazonAuroraPostgreSQLへの移行第回年月日ちょっぴりDDでは、クラウド移行とモダナイゼーション編ということで、オンプレからAWS、非マネージドサービスからマネージドサービスへの移行に役立つAWSサービスのご紹介を行いました。 |
2022-05-30 02:39:29 |
| AWS |
AWS - Japan |
第十八回 ちょっぴりDD - オープニング&ももこの今月のお勧め 5 分間アップデート |
https://www.youtube.com/watch?v=09xkzKFHse4
|
第十八回ちょっぴりDDオープニングampももこの今月のお勧め分間アップデート第回年月日ちょっぴりDDでは、クラウド移行とモダナイゼーション編ということで、オンプレからAWS、非マネージドサービスからマネージドサービスへの移行に役立つAWSサービスのご紹介を行いました。 |
2022-05-30 02:11:29 |
| js |
JavaScriptタグが付けられた新着投稿 - Qiita |
ASP.NET Coreを使ったToDoアプリの作成(後半) |
https://qiita.com/yourao424/items/95565f8b1eda52a01b9b
|
aspnetcore |
2022-05-30 11:43:51 |
| Docker |
dockerタグが付けられた新着投稿 - Qiita |
VSCodeのRemote Cotainerを起動しようとすると invalid mode: chached のエラーになる |
https://qiita.com/tamanugi/items/eea16f0d8b744c2e15c9
|
rfastapireactfrontcannotc |
2022-05-30 11:21:47 |
| Git |
Gitタグが付けられた新着投稿 - Qiita |
【Git】リモート追跡ブランチと上流ブランチを理解する【fetch・merge】 |
https://qiita.com/kazunoko1606/items/373363648d2e0b620bf8
|
fetch |
2022-05-30 11:30:31 |
| 技術ブログ |
Developers.IO |
[Rust] RusqliteでSqliteを操作する |
https://dev.classmethod.jp/articles/rust-sqlite/
|
crate |
2022-05-30 02:40:49 |
| 海外TECH |
DEV Community |
Become a Better Developer by Learning Functional Programming in JavaScript. |
https://dev.to/callmebobonwa/become-a-better-developer-by-learning-functional-programming-in-javascript-55ep
|
Become a Better Developer by Learning Functional Programming in JavaScript Functional programming abbreviated as FP is a programming paradigm that s popular in JavaScript JavaScript treats functions as first class citizens and this makes it easy to write functional programming in JavaScript This post will tell you the basics and benefits of functional programming and how to use them in JavaScript What is Functional Programming Functional programming is a way of writing software with specific principles The idea is that these principles willMake it easier to write test and debug the codeMake it easier to reason about the codeImprove developer productivityAnd moreCore Principles of Functional ProgrammingPure FunctionsFunctions should be pure Pure functions always produce the same output and have no side effects affecting the output Side effects are anything that s outside the control of the function e g any input output I O such as reading from a database file or using console log Or even a static variable Here s a simple example This function is pure because it s determinisic It has no side effects Nothing outside the function can influence the output addTen will always be const addTen input gt return input Fetch the number from the databaseconst numberFromDb DB getNumber This function is not pure because it s not deterministic It has a side effect the numberFromDb value We cannot know for sure that the outcome will be the same every time we call it and that s why it s not pureconst addWithNumberFromDb input gt return input numberFromDb But I Need I O An application without I O is not that useful Functional programming is not about eliminating I O Instead you should separate the business logic from I O Any side effects should be handled at the edges of our processes and not in the middle of them By doing this you achieve pure business logic that is easily testable JavaScript is not a purely functional programming language So there s nothing from stopping you doing whatever you feel comfortable with though Haskell on the other hand is an example of a purely functional programming language In Haskell you re forced to use functional programming principles Immutable StateAn immutable state means that the state should not change Instead of changing the state in functional programming we copy it This might seem counter intuitive why would we want to copy the state instead of changing it In JavaScript you can pass on values by reference This can be dangerous let s look at an example Create a person with a namelet simon name simon Instead of copying simon we assign it by reference This is dangerous and can have unwanted behavior later let lisa simon Set the correct name of lisalisa name lisa But now we also updated simon s name console log simon name lisa If we would have copied simon this would not have happened Let s see how we would do it in functional programminglet beth name beth Copy beth instead of using a reference to itlet andy beth Set the correct name of andyandy name andy Now both variables have the correct nameconsole log andy name andy console log beth name beth RecursionWith recursion lists are not iterated using for while or do while because they mutate state increasing the counter for example Instead functional programming functions such as map filter and reduce are used The word recursion scared me for a long time I have to admit But in JavaScript you can quickly see the benefits of readability and productivity using these functions let s look at an example A list of fruit and their priceconst fruit name banana price name apple price name pear price Now we want to increase the price of all fruit Let s do this using a for loop NOTE We re also mutating state here which as you know can be dangerousfor f of fruit f price f price Instead let s use map const moreExpensiveFruit fruit map f gt return f price f price Now we re using functional programming We re not mutating fruit instead we re copying data with the spread operatator map returns a new list so the fruit list is still unchangedreduce will let you reduce a list of elements into a single value This is useful for working with numbers A list of fruit and their priceconst fruit name banana price name apple price name pear price We use reduce to get the total price of all fruit const sumPriceFruit fruit reduce previous current gt previous current price Log to see the resultconsole log sumPriceFruit reduce will let you reduce a list of elements into a single value This is useful for working with numbers This function was the hardest one to understand for me ConclusionNow you know what functional programming is about why it s useful and how to use it in JavaScript It might take some time to get used to but it s well worth the effort The functions we cover are available in all major programming languages This is not something specific to JavaScript |
2022-05-30 02:09:57 |
| 海外TECH |
CodeProject Latest Articles |
A Free & Useful Converter from VB project to C# project |
https://www.codeproject.com/Tips/5333669/A-Free-Useful-Converter-from-VB-project-to-Csharp
|
projectthis |
2022-05-30 02:42:00 |
| ニュース |
@日本経済新聞 電子版 |
亀田製菓、インド出身の新CEOが育てる成長への種
https://t.co/ZcUjgW34GF |
https://twitter.com/nikkei/statuses/1531103013716099074
|
亀田製菓 |
2022-05-30 02:39:39 |
| ニュース |
@日本経済新聞 電子版 |
防波堤が一夜で消失 水面下で起こった奇妙な現象
https://t.co/47nMML80MO |
https://twitter.com/nikkei/statuses/1531101014560231424
|
防波堤 |
2022-05-30 02:31:43 |
| ニュース |
@日本経済新聞 電子版 |
習近平氏に明王朝の落とし穴 ゼロコロナ破綻が招く嵐
https://t.co/3rmqRgwk38 |
https://twitter.com/nikkei/statuses/1531097986545352705
|
落とし穴 |
2022-05-30 02:19:41 |
| ニュース |
@日本経済新聞 電子版 |
22年度補正予算案、あす成立へ 与野党が採決日程で合意
https://t.co/1Vb4KlLZc0 |
https://twitter.com/nikkei/statuses/1531094726409330688
|
補正 |
2022-05-30 02:06:43 |
| ニュース |
BBC News - Home |
World's top graduates get new UK visa option |
https://www.bbc.co.uk/news/uk-61628740?at_medium=RSS&at_campaign=KARANGA
|
optionthe |
2022-05-30 02:01:23 |
| 北海道 |
北海道新聞 |
エルサレムで右派が国旗掲げ行進 「アラブ人に死を」叫ぶ |
https://www.hokkaido-np.co.jp/article/687081/
|
行進 |
2022-05-30 11:06:17 |
| 北海道 |
北海道新聞 |
南富良野町贈収賄事件 会社員に懲役２年求刑 |
https://www.hokkaido-np.co.jp/article/687135/
|
上川管内 |
2022-05-30 11:11:00 |
| 北海道 |
北海道新聞 |
古江彩佳は決勝で敗れる 米女子ゴルフ、マッチプレー |
https://www.hokkaido-np.co.jp/article/687134/
|
女子ゴルフ |
2022-05-30 11:08:00 |
| 北海道 |
北海道新聞 |
リトルマーメイド、３年ぶり公演 劇団四季が来年、札幌で |
https://www.hokkaido-np.co.jp/article/687042/
|
劇団四季 |
2022-05-30 11:06:08 |
| ビジネス |
東洋経済オンライン |
中島健人｢80年代リメイクCM｣の新しいレトロ感 5月前期の｢CM好感度ランキング｣を一挙公開！ | メディア業界 | 東洋経済オンライン |
https://toyokeizai.net/articles/-/592649?utm_source=rss&utm_medium=http&utm_campaign=link_back
|
日清食品 |
2022-05-30 12:00:00 |
| ビジネス |
東洋経済オンライン |
｢日本地図の父｣伊能忠敬に千葉県民が熱くなる訳 漫画｢大河への道｣（第1話･前編） | 大河への道 | 東洋経済オンライン |
https://toyokeizai.net/articles/-/588475?utm_source=rss&utm_medium=http&utm_campaign=link_back
|
伊能忠敬 |
2022-05-30 11:30:00 |
| マーケティング |
AdverTimes |
ガンダムにナラティブを、キングダムにパーパスを学ぶ |
https://www.advertimes.com/20220530/article384718/
|
|
2022-05-30 02:30:00 |
| マーケティング |
AdverTimes |
渋谷マルイ、一時休業へ 木造の商業施設に建て替え |
https://www.advertimes.com/20220530/article385361/
|
商業施設 |
2022-05-30 02:14:13 |
| マーケティング |
AdverTimes |
デザイン関連の展覧会企画案を募集、東京・丸の内で2023年3月に開催 |
https://www.advertimes.com/20220530/article385272/
|
gooddesignmarunouchi |
2022-05-30 02:12:40 |
コメント
コメントを投稿