How we replaced a 10-year-old Perl product using ScalaScalaMatsuri 2019 http://2019.scalamatsuri.org/index_en.html
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Exploring Tagless Final pattern for extensive and readable Scala code
Home / Blog / Exploring Tagless Final pattern for extensive and readable Scala code In this post, I will try to share with you all a functional pattern I stumbled upon recently – Tagless Final. This pattern tries to address a vital problem for every software engineer: how to make sure the programs we write are correct? I will try to explain how Tagless Final works and how it can be applied in prac
Scalaã§MLスタイルã®ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ã‚’使ã£ãŸãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã‚’ã™ã‚‹ - kmizuã®æ—¥è¨˜
何ã¯ã¨ã‚‚ã‚れ以下ã®ã‚³ãƒ¼ãƒ‰ã‚’見ã¦ãã ã•ã„(ã¡ãªã¿ã«è¤‡ç´ 数クラスã®å®Ÿè£…ã¯ã€ d.hatena.ne.jp ã‚’å‚考ã«ã•ã›ã¦ã„ãŸã ãã¾ã—ãŸï¼‰ï¼š trait Complex { type T def re(a: T): Double def im(a: T): Double def make(re: Double): T def plus(a: T, b: T): T def minus(a: T, b: T): T def multiply(a: T, b: T): T def divide(a: T, b: T): T } object Complex extends Complex { case class C(re: Double, im: Double) type T = C def re(a: T): Double = a.re def im(a: T): Double = a.im d
Haskellを勉強ã—ã¦æ„Ÿå‹•ã—ãŸã“ã¨ãƒ»é›£ã—ã„ã¨æ€ã£ã¦ã‚‹ã“㨠- Qiita
Haskell Advent Calendar 4日目ã®è¨˜äº‹ã§ã™ã€‚ Haskellã«å…¥é–€ã—ãŸã®ã¯6, 7å¹´å‰ ã‚²ãƒ¼ãƒ ãŒä½œã‚Œã‚‹è¨€èªž(æŸãƒ¢ãƒŠãƒ‡ã‚£ã‚¦ã‚¹)ã よã€ã¨è¨€ã‚ã‚Œãƒ›ã‚¤ãƒ›ã‚¤ç ”ç©¶å®¤ã«å…¥ã£ã¦å¦ã‚“ã ã®ãŒé‹å‘½ã®å‡ºä¼šã„ã§ã—ãŸã€‚最åˆã¯å¥‡å¦™ãªè¨€èªžã§ã‚„ãŸã‚‰é を使ã‚ã›ã‚‹ã—èžã„ãŸã“ã¨ã‚‚ç„¡ã„ã—ã§ã€æ–‡å¥ã‚’言ã£ã¦ã„ã¾ã—ãŸãŒå¦ã‚“ã§ã„ãã†ã¡ã«æ¬¡ç¬¬ã«ãƒ—ãƒã‚°ãƒ©ãƒ ã®ç¾Žã—ã•åˆç†æ€§ã«æƒ¹ã‹ã‚Œã¦ã„ãã¾ã—ãŸã€‚残念ãªãŒã‚‰æ™®æ®µã¯åƒ•ã®é ã«ã‚ã¾ã‚‹è¨€èªžãªã®ã§ä½¿ç”¨ã—ã¦ã„ã¾ã›ã‚“ãŒã€å¾Œã®ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°äººç”Ÿã«å¤šãã®å½±éŸ¿ã‚’残ã—ã¦è¨€ã£ãŸæ„Ÿå‹•ã—ãŸã“ã¨ã€ãã—ã¦ãªãœé›£ã—ã„ã¨æ€ã£ã¦ã„ã‚‹ã‹ã‚’ã¾ã¨ã‚ã¦ã„ããŸã„ãªã¨æ€ã„ã¾ã™ã€‚基本的ã«ã¯ã€æ›¸ç±ã€Œã™ã”ã„HaskellãŸã®ã—ãå¦ã¼ã†ã€ã®å†…容ã®æŠœç²‹ã«ãªã‚Šã¾ã™ã€‚Haskell未経験者ã®æ–¹ã«æ˜¯éžã€å¦ã¶ãã£ã‹ã‘ã«ãªã‚Œã°ã¨æ€ã£ã¦ã„ã¾ã™ã€‚(本当ã¯Haskellã®ãƒ“ジュアルプãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ç’°å¢ƒã‚’作りãŸã‹ã£ãŸã§ã™ãƒ»ãƒ»ãƒ»ã€‚時間ãŒç„¡ãã¦æ–念) Hask
CodeIQã«ã¤ã„ã¦ã®ãŠçŸ¥ã‚‰ã›
2018å¹´4月25日をもã¡ã¾ã—ã¦ã€ 『CodeIQã€ã®ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°è…•è©¦ã—サービスã€å¹´åŽç¢ºç´„スカウトサービスã¯ã€ ITエンジニアã®ãŸã‚ã®å¹´åŽç¢ºç´„スカウトサービス『moffers by CodeIQã€https://moffers.jp/ ã¸ä¸€æœ¬åŒ–ã„ãŸã—ã¾ã—ãŸã€‚ ã“ã‚Œã¾ã§å¤šãã®ITエンジニアã®æ–¹ã«ã€ŽCodeIQã€ã‚’ã”利用ã„ãŸã ãã¾ã—ã¦ã€ 改ã‚ã¦å¿ƒã‚ˆã‚Šæ·±ã御礼申ã—上ã’ã¾ã™ã€‚ ã¾ãŸã€ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã®ãŸã‚ã®Webマガジン「CodeIQ MAGAZINEã€ã¯ã€ リクナビNEXTジャーナル( https://next.rikunabi.com/journal/ )ã«ä¸€éƒ¨ã®è¨˜äº‹ã®ç§»è¡Œã‚’予定ã—ã¦ãŠã‚Šã¾ã™ã€‚ 今後ã¯ã€Žmoffers by CodeIQã€ã«ã¦ã€ ITエンジニアã®çš†æ§˜ã®ã‚ˆã‚Šè‰¯ã„転è·ã‚’サãƒãƒ¼ãƒˆã™ã‚‹ãŸã‚ã«ã€ã‚ˆã‚Šä¸€å±¤åŠªã‚ã¦ã¾ã„ã‚Šã¾ã™ã®ã§ã€ 引ã続ãã”愛顧ã®ã»ã©ä½•å’よã‚ã—ããŠé¡˜ã„申ã—上ã’ã¾ã™ã€‚ ã¾ãŸã€Cod
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Scalaã«ã‚ˆã‚‹ç´”粋関数型プãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã‚’用ã„ãŸé«˜é€Ÿã§ä¸¦è¡Œãªã‚·ã‚¹ãƒ†ãƒ スケーラブルã§ä¸¦è¡Œãªã‚·ã‚¹ãƒ†ãƒ をメモリリークやスレッドリークを起ã“ã•ãšã€ã—ã‹ã‚‚ç´ æ—©ã開発ã™ã‚‹ã“ã¨ã¯å‘½ä»¤å½¢ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã‚„オブジェクト指å‘プãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã§ã¯ã»ã¨ã‚“ã©ä¸å¯èƒ½ã§ã‚ã‚‹ã“ã¨ãŒã‚ã‹ã£ã¦ãã¾ã—ãŸã€‚ Akkaã®ã‚ˆã†ãªScalaフレームワークã¯ã“ã®å•é¡Œã‚’部分的ã«å˜ç´”化ã—ã¾ã—ãŸãŒã€ã—ã‹ã—ãã‚Œã¯åŒå€¤æ€§ã®æ„味付ã‘ã€åž‹å®‰å…¨æ€§ã€ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ã®çµåˆæ€§ã‚’çŠ ç‰²ã«ã™ã‚‹å½¢ã§ã‚ã‚Šã€çµå±€ã¯é–‹ç™ºã‚„ä¿å®ˆã®ã‚³ã‚¹ãƒˆã‚’大ãã上昇ã•ã›ã¦ã—ã¾ã„ã¾ã—ãŸã€‚ ã“ã®ãƒ—レゼンテーションã§ã¯ã€å¼·åŠ›ãªç´”粋関数型ã®Effectシステムã§ã‚ã‚‹Scalaz 8 IOを用ã„ã¦ã€åž‹å®‰å…¨ã€ä¸¦è¡Œã€ã‚¹ã‚±ãƒ¼ãƒ©ãƒ–ルã§ãƒªãƒ¼ã‚¯ã®ãªã„アプリケーションを開発ã™ã‚‹æ–¹æ³•ã‚’å¦ã³ã¾ã™ã€‚ ãã—ã¦ã“ã‚Œã¯ä»Šã¾ã§ã«ã‚ã£ãŸæ–¹æ³•ã‚ˆã‚Šç´ æ—©ãç°¡å˜ã§ã‚‚ã‚ã‚‹ã®ã§ã™ã€‚ ã“ã®ã‚»ãƒƒã‚·ãƒ§ãƒ³ã®æœ€å¾Œã«ã¯ç§ã¯ã€å®Ÿå‹™ã«æºã‚るプãƒã‚°ãƒ©ãƒžã«ã¨ã£ã¦ç´”粋関
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Finagle Client ã®ãƒªãƒˆãƒ©ã‚¤æ©Ÿèƒ½ | Scala Tech Blog
AI Messenger ã¨ã„ã†ãƒãƒ£ãƒƒãƒˆãƒœãƒƒãƒˆäº‹æ¥ã§ã‚µãƒ¼ãƒã‚µã‚¤ãƒ‰ã®é–‹ç™ºã‚’ã—ã¦ã„る大野ã§ã™ã€‚ AI Messenger ã§ã¯ã€éžåŒæœŸ RPC フレームワーク㮠Finagle を使用ã—ã¦é–‹ç™ºã‚’ã—ã¦ã„ã¾ã™ã€‚ Finagle ã«ã¤ã„ã¦ã¯ 今年4月ã«å¼Šç¤¾å†…ã§è¡Œã£ãŸ AdTech Scala Meetup ã®è¨˜äº‹ã‚’ã”覧ãã ã•ã„ ([AdTech Scala Meetup] Finagle | Scala Tech Blog)。Meetup ã®è¨˜äº‹ä¸ã§ã¯ã€Œã‚¢ãƒ‰ãƒ†ã‚¯ã‚¹ã‚¿ã‚¸ã‚ªã§ã¯ã»ã¨ã‚“ã©å°Žå…¥å®Ÿç¸¾ãŒç„¡ã„ã€ã¨ã‚ã‚Šã¾ã™ãŒã€æœ€è¿‘アドテクスタジオã®ä¸ã§ã‚‚å°Žå…¥ã—ã¦ã„るプãƒãƒ€ã‚¯ãƒˆãŒå¢—ãˆã¦ãã¾ã—ãŸã€‚ AI Messenger ã§ã¯å†…部ã®ã‚µãƒ¼ãƒ“ス間や Facebook Messenger ç‰ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸ãƒ³ã‚°ã‚µãƒ¼ãƒ“ス間㧠Http 通信を行ã£ã¦ã„ã¾ã™ãŒã€æ§˜ã€…ãªè¦å› ã§ãƒªã‚¯ã‚¨ã‚¹ãƒˆãŒå¤±æ•—ã™ã‚‹ã“ã¨ãŒã‚ã‚Šã¾ã™ã€‚ãã®éš›ã« Finagle
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Combining ZIO and Akka to enable distributed FP in Scala
Modular programming Using Object in Scala
Scala Rationale [pdf] | Hacker News
Miles Sabin - The swiss army knife of generic programming: Shapeless's type class derivation in action on Vimeo
scala-modules/README.md at master · yawaramin/scala-modules
Haskell VS. Scala
https://www.scala-lang.org/news/2.13.0-M3
Scala ã®çœç•¥ãƒ«ãƒ¼ãƒ«æ—©è¦šãˆ · GitHub
Finch: Best-Practices
https://monkey.org/~marius/funsrv.pdf
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