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Why I Don't Like Akka Actors
Noel Welsh Collected thoughts on startups, software, and machine learning. About Projects Archive Categories Pages Tags We recently rewrote Myna’s back-end service. The architecture changed dramatically, and is now both faster and easier to extend. One of the significant architectural changes was removing all Akka actors. After heavily using them in the first version of the back-end, I have come t
Category Theory for Promises/A+ - BAM Weblog
Promises are being debated in the JavaScript community. The most popular specification is Promises/A+. It’s a fairly small specification, containing only a single function: then. The function is heavily overloaded which makes it quite complicated - way more than it has to be. I’ll try to show how category theory can give us a much simpler, more generalised and lawful API! A proper Promise/A+ imple
爆速ã§ã‚ã‹ã‚‹jQuery.Deferred超入門
ãƒ¤ãƒ•ãƒ¼æ ªå¼ä¼šç¤¾ã¯ã€2023å¹´10月1æ—¥ã«LINEãƒ¤ãƒ•ãƒ¼æ ªå¼ä¼šç¤¾ã«ãªã‚Šã¾ã—ãŸã€‚LINEãƒ¤ãƒ•ãƒ¼æ ªå¼ä¼šç¤¾ã®æ–°ã—ã„ブãƒã‚°ã¯ã“ã¡ã‚‰ã§ã™ã€‚LINEヤフー Tech Blog Yahoo!デベãƒãƒƒãƒ‘ーãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã®ä¸é‡Ž(@Hiraku)ã§ã™ã€‚ã“ã‚Œã¾ã§ã€JavaScriptã§éžåŒæœŸå‡¦ç†ã‚’書ã上ã§ã®å•é¡Œã¨ã—ã¦ã€ã‚³ãƒ¼ãƒ«ãƒãƒƒã‚¯åœ°ç„やエラー処ç†ã«ä¾‹å¤–ãŒä½¿ãˆãªã„ã“ã¨ãªã©ã‚’解説ã—ã¦ãã¾ã—ãŸã€‚ ã“れらã®å•é¡Œã«å¯¾å‡¦ã™ã‚‹ãƒ©ã‚¤ãƒ–ラリã®1ã¤ã§ã‚ã‚‹jQuery.Deferredã«é–¢ã—ã¦ã€ã‚‚ã†å°‘ã—ä¸å¯§ã«è§£èª¬ã„ãŸã—ã¾ã™ã€‚ãªãŠã€jQueryã®ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã¯è¨˜äº‹åŸ·ç†æ™‚点ã®æœ€æ–°ã§ã‚ã‚‹ã€1.9.1を想定ã—ã¦ã„ã¾ã™ã€‚ jQuery.Deferredã¨ã¯ jQuery.Deferredã¨ã¯jQueryã®ãƒãƒ¼ã‚¸ãƒ§ãƒ³1.5ã‹ã‚‰å°Žå…¥ã•ã‚ŒãŸã€éžåŒæœŸå‡¦ç†ã‚’ã†ã¾ã扱ã†ãŸã‚ã®æ¨™æº–モジュールã§ã™ã€‚使ã„ã“ãªã™ã“ã¨ã§ã€ä»¥ä¸‹ã®ã‚ˆã†ãªåŠ¹æžœãŒè¦‹è¾¼ã‚ã¾ã™ã€‚ éžåŒæœŸå‡¦ç†ã‚’連çµ
GitHub - cujojs/when: A solid, fast Promises/A+ and when() implementation, plus other async goodies.
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Google Chrome Canary（æ£ç¢ºã«ã¯V8）ã«ã€ã¤ã„ã«Generators（yield）ãŒå…¥ã£ãŸã€‚ã“れを上手ã«ä½¿ã†ã¨ã€ã‚¨ãƒ©ãƒ¼å‡¦ç†ã‚’å«ã‚€éžåŒæœŸã‚³ãƒ¼ãƒ‰ã‚’åŒæœŸçš„ã«æ›¸ãã“ã¨ãŒã§ãるよã†ã«ãªã‚Šã€è¦‹é€šã—ãŒæ¥µã‚ã¦è‰¯ããªã‚‹ã®ã§ã€ã“ã“ã§ç´¹ä»‹ã™ã‚‹ã€‚ ã“ã“ã§ç´¹ä»‹ã™ã‚‹ã‚‚ã®ã¯ã„ãšã‚ŒNode.jsã§ã‚‚使用ã§ãるよã†ã«ãªã‚‹ã®ã§ã€Webã¨ã®äº’æ›æ€§ã‚’æ°—ã«ã™ã‚‹å¿…è¦ã®ãªã„Node.jsã§ã¯è¿‘ã„ã†ã¡ã«æ´»ç”¨ã§ãるよã†ã«ãªã‚‹ã¨æ€ã†ã€‚ 下ã®ã‚³ãƒ¼ãƒ‰ã‚’å‹•ã‹ã™ãŸã‚ã«ã¯ã€æœ€æ–°ã®Google Chrome Canaryã§ã€chrome://flagsã‹ã‚‰experimental javascriptを有効ã«ã—ã¦ãŠãå¿…è¦ãŒã‚る。 ES6 Harmonyã®Generator構文ã«ã¤ã„㦠functionã§ã¯ãªãfunction*ã¨ã„ã†ã‚ーワードを使ã†ã¨ã€yieldã‚ーワードãŒä½¿ãˆã‚‹ã‚ˆã†ã«ãªã‚‹ã€‚ function* range(begin
Node, Promises and Functional Programming
æ±äº¬Nodeå¦åœ’ 8時é™ç›® â€Nodeã¨ãƒ—ãƒãƒŸã‚¹ã¨ã€æ™‚々ã€é–¢æ•°åž‹â€ by @okapies http://connpass.com/event/2125/
jQueryã®Deferredã¨Promise - tkawachi Blog
JavaScript(ã¨ã„ã†ã‹ CoffeeScript)ã£ã¦90年代ã«ãƒ–ラウザ上ã§ä½¿ã‚ã‚Œã¦ã„ãŸé ƒã®ã‚¤ãƒ¡ãƒ¼ã‚¸ãŒæ‹ãˆãšã€ã©ã†ã‚‚æ°—æŒã¡æ‚ªãã¦é€ƒã’ã¦å›žã£ã¦ãŸã‚“ã§ã™ãŒã€äº‹æƒ…ãŒã‚ã£ã¦æœ€è¿‘ã¯æ¸‹ã€…書ã„ã¦ã¾ã™ã€‚ JavaScripterã®çš†æ§˜ã«ã¨ã£ã¦ã¯ä½•ã‚’今更ã ã¨ã¯æ€ã„ã¾ã™ãŒ jQuery.Deferredを使ã£ã¦æ¥½ã—ã„éžåŒæœŸç”Ÿæ´»ã‚’é€ã‚‹æ–¹æ³• ã‚’èªã‚“㧠Deferred 便利ã ãªã€ã¨æ€ã£ãŸã®ã§ç†è§£ã—ãŸã¨ã“ã‚をメモã—ã¦ãŠãã¾ã™ã€‚ 利用シーン $.get() ã£ã¦ã‚¨ãƒ©ãƒ¼ãƒãƒ³ãƒ‰ãƒªãƒ³ã‚°ã§ããªã„ã®ã‹ã€‚使ãˆãªã„ãªãƒ¼ã€‚ã¨æ€ã£ãŸã¨ã 複数㮠AJAX リクエスト(ãªã©ã®éžåŒæœŸå‡¦ç†)ã‚’åŒæ™‚ã«é–‹å§‹ã—ã¦ã€å…¨éƒ¨çµ‚ã‚ã£ãŸã‚‰ä½•ã‹ã—ãŸã„ã¨ã。 Deferred object ã‚ーã«ãªã‚‹ã®ã¯ Deferred object ã§ã™ã€‚ 状態 Deferred object ã¯çŠ¶æ…‹ã‚’æŒã¡ã¾ã™ã€‚状態ã¯ï¼“ã¤ã®ã†ã¡ã„ãšã‚Œã‹ã€‚ 未解決(unresolv
Scala 2.10.0 Futures and Promises - 2 - CLOVERðŸ€
å‰å›žã®ç¶šãã§ã™ã€‚今度ã¯ã€Futureコンパニオンオブジェクトã«å®šç¾©ã•ã‚Œã¦ã„るメソッドを試ã—ã¦ã„ã£ã¦ã¿ã¾ã™ã€‚ 今回もã€ã‚½ãƒ¼ã‚¹ã«ã¯ä»¥ä¸‹ã®importæ–‡ãŒã‚ã‚‹ã‚‚ã®ã¨ã— import scala.concurrent._ import scala.concurrent.ExecutionContext.Implicits.global import scala.concurrent.duration._ import scala.util.{Failure, Success} 実行時間ã®è¨ˆæ¸¬ã¨ã€å¾…ã¡æ™‚間を指定ã—ã¦å€¤ã‚’戻ã™ãƒ¡ã‚½ãƒƒãƒ‰ã¨ã—ã¦ã€ä»¥ä¸‹ã‚’使ã†ã‚‚ã®ã¨ã—ã¾ã™ã€‚ // stop-watch def sw[A](body: => A): Unit = { val start = System.currentTimeMillis try { println(s"got [$body], elapsed
Promises are the monad of asynchronous programming – The If Works
In my introduction to monads in JavaScript we saw a couple of monads and examined the commonality between them to expose an underlying design pattern. Before I get on to how that applies to asynchronous programming we need to take one final diversion and discuss polymorphism. Consider the list monad that we implemented before: var compose = function(f, g) { return function(x) { return f(g(x)) }; }
Scala 2.10.0 Futures and Promises - 3 - CLOVERðŸ€
最後ã€Promiseã§ã™ã€‚ Promiseã£ã¦ï¼Ÿ ã¨ã‚Šã‚ãˆãšã€ä»¥ä¸‹ã®ãƒ‰ã‚ュメントã«ã‚ã‚‹Promiseã®èª¬æ˜Žã‚’èªã‚“ã§ã¿ã¾ã™ã€‚ http://docs.scala-lang.org/overviews/core/futures.html http://docs.scala-lang.org/ja/overviews/core/futures.html Future ãŒãƒªãƒ¼ãƒ‰ã‚ªãƒ³ãƒªãƒ¼ã®ã¾ã å˜åœ¨ã—ãªã„値ã«å¯¾ã™ã‚‹ãƒ—レースホルダ・オブジェクトã®ä¸€ç¨®ã ã¨å®šç¾©ã•ã‚Œã‚‹ã®ã«å¯¾ã—ã¦ã€Promise ã¯æ›¸ãè¾¼ã¿å¯èƒ½ã§ã€1度ã ã‘代入ã§ãるコンテナ㧠Future を完了ã•ã›ã‚‹ã‚‚ã®ã ã¨è€ƒãˆã‚‹ã“ã¨ãŒã§ãる。 ã¤ã¾ã‚Šã€Promise 㯠success メソッドを用ã„㦠(ç´„æŸã‚’「完了ã•ã›ã‚‹ã€ã“ã¨ã§) Future を値ã¨ã¨ã‚‚ã«æˆåŠŸã•ã›ã‚‹ã“ã¨ãŒã§ãる。 逆ã«ã€Promise 㯠failure メソッドを用ã„㦠Futu
How to configure a fine tuned thread pool for futures?
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Scala 2.10.0 Futures and Promises - 1 - CLOVERðŸ€
今度ã¯ã€Futures and Promisesã§ã™ã€‚ http://docs.scala-lang.org/overviews/core/futures.html 日本語訳。 http://docs.scala-lang.org/ja/overviews/core/futures.html ãã“ãã“é‡ãŒå¤šããªã‚Šãã†ãªã®ã§ã€åˆ†å‰²ã—ã¦ã„ãã¾ã™ã€‚ã¾ãšã¯Futureã‹ã‚‰ã€‚ Futureã£ã¦ï¼Ÿ ã‚る計算処ç†ã‚’éžåŒæœŸï¼ˆä¸¦åˆ—）ã«å®Ÿè¡Œã—ã¦ãŠã„ã¦ã€çµæžœã¯å¾Œã‹ã‚‰å–å¾—ã—よã†ã¨ã„ã£ãŸã‚‚ã®ã§ã™ã€‚マルãƒã‚¹ãƒ¬ãƒƒãƒ‰ç³»ã®Futureパターンやã€Javaã ã¨java.util.concurrent.Futureã§ãŠé¦´æŸ“ã¿ã‹ã‚‚ã§ã™ã。ãã†ã„ãˆã°ã€Scala自身ã®Actorパッケージã«ã‚‚ã‚ã£ãŸæ°—ãŒã—ã¾ã™ãŒâ€¦ã€‚ ã¾ã‚ã€2.10.0ã§è¿½åŠ ã•ã‚ŒãŸFutureã¨ã„ã†ã“ã¨ã§ã€‚ サンプルã¯ã“ã‚“ãªæ„Ÿã˜ã§ã™ã€‚ import scala.con
Future 㨠Promise
Philipp Haller, Aleksandar Prokopec, Heather Miller, Viktor Klang, Roland Kuhn, Vojin Jovanovic è‘— Eugene Yokota 訳 æ¦‚è¦ Future ã¯ä¸¦åˆ—ã«å®Ÿè¡Œã•ã‚Œã‚‹è¤‡æ•°ã®æ¼”ç®—ã‚’å–り扱ã†ã®ã«ä¾¿åˆ©ãªæ–¹æ³•ã‚’æä¾›ã™ã‚‹ã€‚ãã‚Œã¯åŠ¹çŽ‡çš„ã§ãƒŽãƒ³ãƒ–ãƒãƒƒã‚ングãªæ–¹æ³•ã 。 大ã¾ã‹ãªè€ƒãˆæ–¹ã¯ã‚·ãƒ³ãƒ—ルãªã‚‚ã®ã§ã€Future ã¯ã¾ã å˜åœ¨ã—ãªã„計算çµæžœã«å¯¾ã™ã‚‹ãƒ—レースホルダã®ã‚ˆã†ãªã‚‚ã®ã 。 一般的ã«ã€Future ã®çµæžœã¯ä¸¦è¡Œã«è¨ˆç®—ã•ã‚Œå¾Œã§é›†è¨ˆã™ã‚‹ã“ã¨ãŒã§ãる。 ã“ã®ã‚ˆã†ã«ä¸¦è¡Œãªã‚¿ã‚¹ã‚¯ã‚’åˆæˆã™ã‚‹ã“ã¨ã§ã€ã‚ˆã‚Šé€Ÿãã€éžåŒæœŸã§ã€ãƒŽãƒ³ãƒ–ãƒãƒƒã‚ングãªä¸¦åˆ—コードã¨ãªã‚‹ã“ã¨ãŒå¤šã„。 デフォルトã§ã¯ã€Future ã‚‚ Promise もノンブãƒãƒƒã‚ングã§ã‚ã‚Šã€å…¸åž‹çš„ãªãƒ–ãƒãƒƒã‚ング演算ã®ä»£ã‚ã‚Šã«ã‚³ãƒ¼ãƒ«ãƒãƒƒã‚¯ã‚’使ã†ã€‚ コールãƒãƒƒã‚¯ã®ä½¿ç”¨ã‚’
GitHub - twitter/util: Wonderful reusable code from Twitter
Twitter Util A bunch of idiomatic, small, general purpose tools. See the Scaladoc here or check out the user guide. Status This project is used in production at Twitter (and many other organizations), and is being actively developed and maintained. Releases Releases are done on an approximately monthly schedule. While semver is not followed, the changelogs are detailed and include sections on publ
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scala/src/library/scala/concurrent/Future.scala at v2.10.0 · scala/scala
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Futures and Promises in Scala 2.10
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