[B! scala] tk60qtã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

tk60qt id:tk60qt

scalaã«é–¢ã™ã‚‹tk60qtã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (42)

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A new backend and optimizer for scalac
tk60qt 2016/07/20
Scala

programming
ãƒªãƒ³ã‚¯
Effective Scalaã®ç¿»è¨³ã‚’å°‘ã—ã ã‘æ‰‹ä¼ã‚ã›ã¦ã‚‚ã‚‰ã„ã¾ã—ãŸ & èªã‚“ã§ã¦æ°—ã«ãªã£ãŸã¨ã“ã‚ã€‚ - from scratch
Effective ScalaãŒå…¬é–‹ã•ã‚Œã¦æ•°æ—¥çµŒã¡ã¾ã—ãŸã€‚ Scalaã¯ãƒã‚¤ãƒ–ãƒªãƒƒãƒ‰è¨€èªžã¨è¨€ã‚ã‚Œã‚‹ã ã‘ã‚ã£ã¦ã€å‘½ä»¤åž‹ã€é–¢æ•°åž‹ã®ã‚¹ã‚¿ã‚¤ãƒ«ä¸¡æ–¹å…±ã§æ›¸ã‘ã‚‹ã¨ã„ã†ç´ æ™´ã‚‰ã—ã•ã‚’æŒã£ã¦ã„ã¾ã™ã€‚ Scalaã«ã¯ãƒã‚¤ãƒ–ãƒ«ã¨ã‚‚ã„ã†ã¹ãæœ¬ãŒã„ãã¤ã‹å‡ºã¦ã„ã¾ã™ã€‚ãã®ä¸ã®ä¸€ã¤ãŒâ†“ã€‚ Scalaã‚¹ã‚±ãƒ¼ãƒ©ãƒ–ãƒ«ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ç¬¬2ç‰ˆ ä½œè€…: Martin Odersky,Lex Spoon,Bill Venners,ç¾½ç”Ÿç”°æ „ä¸€,æ°´å³¶å®å¤ª,é•·å°¾é«˜å¼˜å‡ºç‰ˆç¤¾/ãƒ¡ãƒ¼ã‚«ãƒ¼: ã‚¤ãƒ³ãƒ—ãƒ¬ã‚¹ã‚¸ãƒ£ãƒ‘ãƒ³ç™ºå£²æ—¥: 2011/09/27ãƒ¡ãƒ‡ã‚£ã‚¢: å˜è¡Œæœ¬ï¼ˆã‚½ãƒ•ãƒˆã‚«ãƒãƒ¼ï¼‰è³¼å…¥: 4äºº ã‚¯ãƒªãƒƒã‚¯: 109å›žã“ã®å•†å“ã‚’å«ã‚€ãƒ–ãƒã‚° (28ä»¶) ã‚’è¦‹ã‚‹ ã‚³ãƒ¬ã‚’èªã‚€ã¨Scalaã§å®Ÿæ–½ã™ã‚‹ãŸã‚ã®mustãªè¨˜æ³•ã¯çŸ¥ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ãŸã ã€ã“ã†ã™ã‚‹ã¹ã(should)ã¨ã„ã†ã‚ˆã†ãªãƒŽã‚¦ãƒã‚¦ã‚ã„ãŸè¨˜æ³•ã¯åˆ†ã‹ã‚Šã¾ã›ã‚“ã€‚ Effective Scalaã‚’èªã‚€ã¨Twitt
tk60qt 2016/07/20
Scala

programming
ãƒªãƒ³ã‚¯
Parallel Collections - æ€§èƒ½ã®æ¸¬å®š - Scala Documentation
JVM ã«ãŠã‘ã‚‹æ€§èƒ½ JVM ã«ãŠã‘ã‚‹æ€§èƒ½ãƒ¢ãƒ‡ãƒ«ã¯è«–è©•ã“ãã¯è‰²ã€…ã‚ã‚‹ãŒã€ãã‚Œã«å·»ãè¾¼ã¾ã‚Œã¦çµå±€ã‚ˆãç†è§£ã•ã‚Œã¦ãªã„ã¨è¨€ãˆã‚‹ã€‚ æ§˜ã€…ãªç†ç”±ã‹ã‚‰ã€ã‚ã‚‹ã‚³ãƒ¼ãƒ‰ã¯æœŸå¾…ã•ã‚Œã¦ã„ã‚‹ã‚ˆã‚Šã‚‚æ€§èƒ½ãŒæ‚ªã‹ã£ãŸã‚Šã€ã‚¹ã‚±ãƒ¼ãƒ©ãƒ–ãƒ«ã§ã¯ãªã‹ã£ãŸã‚Šã™ã‚‹ã€‚ ä»¥ä¸‹ã«ã„ãã¤ã‹ã®ç†ç”±ã‚’ã¿ã¦ã„ãã€‚ ä¸€ã¤ã¯ JVM ä¸Šã®ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã®ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«å·¥ç¨‹ãŒé™çš„ã«ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã•ã‚ŒãŸè¨€èªžã®ãã‚Œã¨ã¯åŒã˜ã§ã¯ãªã„ã¨ã„ã†ã“ã¨ãŒæŒ™ã’ã‚‰ã‚Œã‚‹ï¼ˆ[ 2 ] å‚ç…§ï¼‰ã€‚ Java ã¨ Scala ã®ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ã¯ã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ã‚’ JVM ãƒã‚¤ãƒˆã‚³ãƒ¼ãƒ‰ã«å¤‰æ›ã™ã‚‹ã ã‘ã§ã€æœ€é©åŒ–ã¯ã»ã¨ã‚“ã©è¡Œã‚ãªã„ã€‚ ç¾ä»£çš„ãª JVM ã®å¤šãã§ã¯ãƒ—ãƒã‚°ãƒ©ãƒ ã®ãƒã‚¤ãƒˆã‚³ãƒ¼ãƒ‰ãŒå®Ÿè¡Œã•ã‚Œã‚‹ã¨ã€ãã‚Œã¯å®Ÿè¡Œã—ã¦ã„ã‚‹ãƒžã‚·ãƒ³ã®ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ã‚¢ãƒ¼ã‚ãƒ†ã‚¯ãƒãƒ£ã®ãƒžã‚·ãƒ³ã‚³ãƒ¼ãƒ‰ã«å¤‰æ›ã™ã‚‹ã€‚ ã“ã‚Œã¯ã‚¸ãƒ£ã‚¹ãƒˆã‚¤ãƒ³ã‚¿ã‚¤ãƒ ã‚³ãƒ³ãƒ‘ã‚¤ãƒ© (just-in-time compilerã€JITã‚³ãƒ³ãƒ‘ã‚¤ãƒ©) ã¨å‘¼ã°ã‚Œã‚‹ã€‚ ã—ã‹ã—ã€
tk60qt 2016/07/20
Scala

programming
ãƒªãƒ³ã‚¯
sbt-jmhã‚’ä½¿ã£ã¦ã€Scalaã§ãƒžã‚¤ã‚¯ãƒãƒ™ãƒ³ãƒãƒžãƒ¼ã‚¯ - CLOVERðŸ€
ä»¥å‰ã€ãƒžã‚¤ã‚¯ãƒãƒ™ãƒ³ãƒãƒžãƒ¼ã‚¯ãƒ„ãƒ¼ãƒ«ã§ã‚ã‚‹JMHã‚’è©¦ã—ã¦ã¿ãŸã¨ã„ã†ã‚¨ãƒ³ãƒˆãƒªã‚’æ›¸ãã¾ã—ãŸã€‚ JMH http://openjdk.java.net/projects/code-tools/jmh/ ãƒžã‚¤ã‚¯ãƒãƒ™ãƒ³ãƒãƒžãƒ¼ã‚¯ãƒ„ãƒ¼ãƒ«ã€JMHã‚’è©¦ã™ http://d.hatena.ne.jp/Kazuhira/20140102/1388662362 ã§ã€ãã®å¾ŒScalaã§æ›¸ã“ã†ã¨ã—ã¦ã€APTãŒã‚ã‚‹ã®ã§Javaã®ãƒ–ãƒªãƒƒã‚¸ã‚³ãƒ¼ãƒ‰ãŒå¿…è¦ã ã¨ã„ã†ã‚¨ãƒ³ãƒˆãƒªã‚’æ›¸ãã¾ã—ãŸã€‚ Scalaï¼‹sbtã¨ã€JMHã‚’åˆã‚ã›ã¦ä½¿ã† http://d.hatena.ne.jp/Kazuhira/20140102/1388671010 ã“ã‚Œã«å¯¾ã—ã¦ã€æœ€è¿‘@xuwei_kã•ã‚“ã‹ã‚‰sbtã®JMHãƒ—ãƒ©ã‚°ã‚¤ãƒ³ãŒã§ããŸã¨ãƒ„ãƒƒã‚³ãƒŸã‚’ã„ãŸã ã„ãŸã®ã§ã€è©¦ã—ã¦ã¿ã‚‹ã“ã¨ã«ã—ã¾ã—ãŸã€‚ sbt-jmh ãƒ—ãƒ©ã‚°ã‚¤ãƒ³ã®åå‰ã¯ã€ã€Œsbt-jmhã€ã§ã™ã€‚ sbt-jm
tk60qt 2016/07/20
Scala

programming
ãƒªãƒ³ã‚¯
GitHub - x1-/scala-benchmark: This repository has various scala benchmark code using sbt-jmh.
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tk60qt 2016/07/20
Scala

programming
ãƒªãƒ³ã‚¯
scalac ã® -optimize ã‚ªãƒ—ã‚·ãƒ§ãƒ³æœ‰ã‚Šç„¡ã—ã®é•ã„ (-Xshow-phase) - tnoda-scala
tk60qt 2016/07/19
scala

programming
ãƒªãƒ³ã‚¯
Scala2.11.7ã‹ã‚‰ã®Java8ã«å¯¾å¿œã—ãŸæ–°ã—ã„ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã‚’è©¦ã—ã¦ã¿ãŸ - xuwei-k's blog
"æ–°ã—ã„" ã¨ã¯ã€ä»Šã¾ã§å…¨éƒ¨ç„¡åclassã«ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã—ã¦ãŸãƒ©ãƒ ãƒ€ã‚’ã€invoke dynamicä½¿ã£ã¦å‹•çš„ã«ç”Ÿæˆã™ã‚‹ã‚ˆã†ã«ãªã‚‹ã¨ã‹ãã†ã„ã†ã‚„ã¤ã€‚ ãƒ©ãƒ ãƒ€ä»¥å¤–ã®æœ€é©åŒ–ã‚‚ã‚„ã£ã¦ã‚‹ã‚ˆã†ã§ã™ãŒï¼Ÿè©³ã—ãã¯çŸ¥ã‚Šã¾ã›ã‚“ã€‚ Scala 2.12ã‹ã‚‰æ£å¼ã«å…¥ã‚‹ã‚‰ã—ã„ã§ã™ãŒã€(ã“ã‚Œæ›¸ã„ã¦ã‚‹æ™‚ç‚¹ã‹ã‚‰è¦‹ã¦)ã¤ã„æ˜¨æ—¥ãã‚‰ã„(2015/06/25)ã«å‡ºãŸScala2.11.7ã§ã‚‚ã€æ˜Žç¤ºçš„ã«ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã‚’æŒ‡å®šã™ã‚Œã°ã€å®Ÿé¨“çš„ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã¨ã—ã¦ã§ã™ãŒã€ä½¿ãˆã‚‹ãã†ã§ã™ã€‚ å†…éƒ¨ã®ä»•çµ„ã¿ã¯ã€ä»¥ä¸‹ã®Scaladays2015ã®ã‚¹ãƒ©ã‚¤ãƒ‰è¦‹ã‚‹ã¨ã‹ã€ã‚ã¨ã¯å„è‡ªã‚°ã‚°ã£ã¦ãã ã•ã„ http://downloads.typesafe.com/website/presentations/ScalaDaysSF2015/T2_Rytz_Backend_Optimizer.pdf å…¬å¼ã«æ›¸ã„ã¦ã‚ã‚Šã¾ã™ãŒã€2.11.7ã«ãŠã„ã¦Java8ã®ãƒãƒƒã‚¯ã‚¨ãƒ³ãƒ‰ã‚’
tk60qt 2016/07/19
scala

programming
ãƒªãƒ³ã‚¯
LLè„³ãŒscalaã®å‹‰å¼·ã‚’å§‹ã‚ãŸã‚ˆ ãã®35 - Reinvention of the Wheel
[ã¾ã¨ã‚] LLè„³ãŒscalaã®å‹‰å¼·ã‚’å§‹ã‚ãŸã‚ˆ LLè„³ãŒscalaã®å‹‰å¼·ã‚’å§‹ã‚ãŸã‚ˆ ãã®34 Scalaã‚³ãƒƒãƒ—æœ¬ã®11ç« æ®‹ã‚Šã‚’ã‚„ã£ã¦ã—ã¾ã„ã¾ã™ã‚ˆãƒ¼ã€ä»Šå›žã¯ãƒ—ãƒªãƒŸãƒ†ã‚£ãƒ–åž‹ãªã‚“ã‹ã«ã¤ã„ã¦ãƒ‡ã‚¹ 11ç« ã¯å…¨ä½“çš„ã«åº§å¦çš„ãªå†…å®¹ãªã®ã§ã»ã¼å†™çµŒâ€¦(Â´ãƒ»Ï‰ãƒ»ï½€)â€¦ã¾ã‚é ‘å¼µã‚ã†ã‹ã—ã‚‰ã ãƒ—ãƒªãƒŸãƒ†ã‚£ãƒ–åž‹ã®å®Ÿè£…æ–¹æ³• Scalaã§ã®æ•´æ•°æ¼”ç®—ã¯JVMã¨ã®äº’æ›æ€§ã®ç‚¹ã‹ã‚‰ãƒ—ãƒªãƒŸãƒ†ã‚£ãƒ–åž‹ã®æ¼”ç®—ã¨ã—ã¦å®šç¾©ã•ã‚Œã¦ã„ã‚‹ã‚ˆã†ãƒ‡ã‚¹ ãŸã ã—ã€æ•´æ•°ã‚’ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã¨ã—ã¦æ‰±ã†å¿…è¦ãŒã§ããŸå ´åˆã¯java.lang.Integerã¨ã„ã†ãƒãƒƒã‚¯ã‚¢ãƒƒãƒ—ã‚¯ãƒ©ã‚¹ã‚’ä½¿ã†ã‚‰ã—ã„ãƒ‡ã‚¹ãã€‚ã¡ãªã¿ã«æ•´æ•°ã‚’ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã¨ã—ã¦æ‰±ã†ã®ã¯toStringãƒ¡ã‚½ãƒƒãƒ‰ã®å‘¼ã³å‡ºã—ã‚„Anyåž‹ã®å¤‰æ•°ã«æ•´æ•°ã‚’ä»£å…¥ã—ãŸã‚Šã™ã‚‹å ´åˆã¨ã®ã“ã¨ã§ã™ã€‚ ã“ã®ã‚ˆã†ã«Intåž‹ã®æ•´æ•°ã¯java.lang.Integerã«é€éŽçš„ã«å¤‰æ›ã•ã‚Œã‚‹ã‚‰ã—ãã€ã“ã®å ´åˆã®java.lang.Integerã‚’ã€Œãƒœã‚¯ã‚·
tk60qt 2016/07/19
scala

programming
ãƒªãƒ³ã‚¯
Avoiding boxing/unboxing within function
tk60qt 2016/07/19
scala

programming
ãƒªãƒ³ã‚¯
Predef.identityã‚’ãƒ—ãƒªãƒŸãƒ†ã‚£ãƒ–åž‹ã«å¯¾ã—ã¦ä½¿ã†ã¨å°‘ã—é…ããªã‚‹(ã¯ãš) - xuwei-k's blog
ã©ã†ã§ã‚‚ã„ã„ç´°ã‹ã„ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ã®è©±ã€‚ã¨ã‚ã‚‹ãƒ©ã‚¤ãƒ–ãƒ©ãƒªä½œã£ã¦éŠã‚“ã§ã‚‹å½±éŸ¿ã§ã€æœ€è¿‘boxingã‚„ç´°ã‹ã„ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ã«ã¤ã„ã¦è‰²ã€…èª¿ã¹ã¦ã‚‹ã®ã§ã€ã¤ã„ã§ã«æ›¸ã„ã¦ãŠãã€‚ ä»¥å‰ã‹ã‚‰ã€ã“ã‚Œã¡ã‚‡ã£ã¨ã ã‘æ°—ã«ãªã£ã¦ãŸã‘ã©ã€ã¡ã‚ƒã‚“ã¨è¨ˆæ¸¬ã—ã¦ã¿ãŸã‚‰ä¸€å¿œå·®ãŒã§ã‚‹ã€‚ ã¤ã¾ã‚Š val intList: List[Int] = // å¤§ããªIntã®List intList.map(identity) ã‚ˆã‚Šã‚‚ val intList: List[Int] = // å¤§ããªIntã®List intList.map(x => x) ã®ã»ã†ãŒã€é€Ÿããªã‚‹(å¯èƒ½æ€§ãŒã‚ã‚‹)ã¨ã„ã†è©±ã§ã™ã€‚ã‚‚ã¡ã‚ã‚“ã€æœ€é©åŒ–ã«ã‚ˆã£ã¦å·®ãŒã§ãªã„ã“ã¨ã‚‚ã‚ã‚‹ã—ã€å·®ãŒå‡ºã‚‹ã¨ã—ã¦ã‚‚ã›ã„ãœã„æ•°%ã‹ã‚‰æ•°å%ç¨‹åº¦ã§ã—ã‚‡ã†ã€‚ scala -Xprint:jvm -e "List(0).map(identity)"ã‚„ scala -Xprint:jvm -e "List(
tk60qt 2016/07/19
scala

programming
ãƒªãƒ³ã‚¯
How to spot boxing/unboxing in Scala
tk60qt 2016/07/19
scala

programming
ãƒªãƒ³ã‚¯
ã‚ãªãŸã®Scalaã‚’çˆ†é€Ÿã«ã™ã‚‹ï¼—ã¤ã®æ–¹æ³•(æ—¥æœ¬èªžç‰ˆ)
3. â€¢ ã“ã®ã‚¹ãƒ©ã‚¤ãƒ‰ã«å‡ºã¦ãã‚‹é€Ÿåº¦ã‚„ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ã¯ä¸¦åˆ—å®Ÿè¡Œ ã‚’è€ƒæ…®ã—ã¦ã„ã¾ã›ã‚“ã€‚ â€¢ ã“ã®ã‚»ãƒƒã‚·ãƒ§ãƒ³ã¯Scalaãƒ“ã‚®ãƒŠãƒ¼ã‚’å¯¾è±¡ã¨ã—ã¦ã„ã¾ã™ã€‚ â€¢ ãƒ™ãƒ³ãƒãƒžãƒ¼ã‚¯ã‚’å–å¾—ã—ãŸç’°å¢ƒã¯æ¬¡ãƒšãƒ¼ã‚¸ã«è¡¨ç¤ºã—ã¾ã™ã€‚ â€¢ ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ã«ã¤ã„ã¦@Keenã‹ã‚‰ã„ãã¤ã‹ã®ã‚¢ãƒ‰ãƒã‚¤ã‚¹ã‚’ é ‚ãã¾ã—ãŸã€‚ã‚ã‚ŠãŒã¨ã†ï¼ acknowledgement ack. Parallel execution is not taken into account. 4. environment of benchmark ã‚¤ãƒ³ã‚¹ã‚¿ãƒ³ã‚¹ Amazon EC2 m3.2xlarge vCPU 8 memory 30GB ãƒ‡ã‚£ã‚¹ã‚¯ æ±Žç”¨SSD OS CentOS6.7-Final jdk jdk1.8.0u65(oracle, server vm) scala 2.11.7 ãƒ“ãƒ«ãƒ‰ãƒ„ãƒ¼ãƒ« sbt ãƒ™ãƒ³ãƒãƒžãƒ¼ã‚¯ãƒ„ãƒ¼ãƒ« sbt-jmh 0.2.
tk60qt 2016/07/19
scala

programming
ãƒªãƒ³ã‚¯
Scalaã«ãŠã‘ã‚‹ç´°ã‹ã„æœ€é©åŒ–ã®ãƒ—ãƒ©ã‚¯ãƒ†ã‚£ã‚¹ - xuwei-k's blog
åˆ—æŒ™é †è‡ªä½“ã¯ã¨ãã«æ„å‘³ã‚ã‚Šã¾ã›ã‚“ã€‚ã‚ã¨ã€Œã©ã®æœ€é©åŒ–ãŒã©ã®ãã‚‰ã„é€Ÿããªã‚‹ã®ã‹ï¼Ÿã€ã‚’è©³ç´°ã«è¨ˆã£ãŸã“ã¨ã¯ãªã„ã§ã™ã—ã€ã€ŒåŽŸç†çš„ã«ã“ã†ãªã£ã¦ã‚‹ã‹ã‚‰(ryã€ã¨ã„ã†ã®ã‚’èª¬æ˜Žã™ã‚‹ã«éŽãŽã¾ã›ã‚“ã€‚ä¸ã«ã¯ã€ŒJITã§ç„¡æ„å‘³ã«ãªã‚‹ã‚ˆã†ãªã©ã†ã§ã‚‚ã„ã„ç´°ã‹ã™ãŽã‚‹ã“ã¨ã€ã‚‚æ›¸ã„ã¦ã‚ã‚Šã¾ã™ã—ã€æœ€é©åŒ–ã®ãƒˆãƒ¬ãƒ¼ãƒ‰ã‚ªãƒ•ã¨ã—ã¦å¤±ã†ã‚‚ã®ã‚‚ã‚ã‚‹ã®ã§ã€ãã®ã‚ãŸã‚Šè‡ªå·±è²¬ä»»ã§ãŠé¡˜ã„ã—ã¾ã™ã€‚æœ¬å½“ã«æœ€é©åŒ–ãŒå¿…è¦ã¨ã•ã‚Œã‚‹å ´åˆã¯ã€ä»¥ä¸‹ã®ã‚‚ã®ã‚’ç„¡é—‡ã«å®Ÿè¡Œã™ã‚‹ã‚ˆã‚Šã¾ãšè¨ˆæ¸¬ã—ãŸã»ã†ãŒã„ã„ã®ã¯ã€è¨€ã†ã¾ã§ã‚‚ã‚ã‚Šã¾ã›ã‚“ã€‚*1 1. private[this]ã‚’ã¤ã‹ãˆ scalaã®valã‚„varã¯ã€private[this]ã«ã—ãŸã¨ãã®ã¿ã€ç›´æŽ¥ã®ãƒ•ã‚£ãƒ¼ãƒ«ãƒ‰ã‚¢ã‚¯ã‚»ã‚¹ã«ãªã‚Šã¾ã™(ãã‚Œä»¥å¤–ã§ã¯ãƒ¡ã‚½ãƒƒãƒ‰å‘¼ã³å‡ºã—)ã€‚ã‚·ãƒ³ã‚°ãƒ«ãƒˆãƒ³ã®objectã®å ´åˆã‚‚åŒæ§˜ã§ã™ã€‚private[this]ã‚’ã¤ã‘ã‚‰ã‚Œã‚‹å ´åˆã¯ã§ãã‚‹ã ã‘ã¤ã‘ã¾ã—ã‚‡ã† 2. ãªã‚“ã§ã‚‚ã‹ã‚“ã§ã‚‚Listã‚’ã¤ã‹ã†ãª æœ€åˆã®
tk60qt 2016/07/19
scala

programming
ãƒªãƒ³ã‚¯
YammerãŒScalaã‹ã‚‰Javaã¸ç§»è¡Œä¸
åŽŸæ–‡(æŠ•ç¨¿æ—¥ï¼š2011/11/30)ã¸ã®ãƒªãƒ³ã‚¯ Yammerã®å¾“æ¥å“¡ã§ã‚ã‚‹Coda Haleæ°ãŒScalaã®å•†ç”¨ãƒ™ãƒ³ãƒ€ã§ã‚ã‚‹Typesafeç¤¾ã¸é€ã£ãŸãƒ¡ãƒ¼ãƒ«ãŒYCombinatorã¨GitHubã®gistçµŒç”±ã§ãƒªãƒ¼ã‚¯ã—ãŸã€‚ãƒ¡ãƒ¼ãƒ«ã«ã‚ˆã‚Œã°ã€Yammerã¯è¤‡é›‘ã•ã‚„æ€§èƒ½é¢ã‚’é‘‘ã¿ã¦ã€åŸºç›¤ã®ã‚¤ãƒ³ãƒ•ãƒ©ã‚’Scalaã‹ã‚‰Javaã¸æˆ»ã™ãã†ã ã€‚ Yammerã®PRéƒ¨é–€ã®Shelley Riskæ°ã«ã‚ˆã‚Œã°ã“ã®ãƒ¡ãƒ¼ãƒ«ã¯Coda Haleæ°ã®å€‹äººçš„ãªæ„è¦‹ã§ã‚ã‚Šã€Yammerã®å…¬å¼ãªè¦‹è§£ã§ã¯ãªã„ã¨ã®ã“ã¨ã ã€‚ã“ã®ãƒªãƒ¼ã‚¯å¾Œã€Coda Haleæ°ã¯è‡ªèº«ã®è€ƒãˆã‚’http://codahale.com/the-rest-of-the-story/ã§è¡¨æ˜Žã—ã¦ã„ã‚‹ã€‚æ°ã¯ã“ã®ãƒ¡ãƒ¼ãƒ«ã¯Donald Fischeræ°(Typesafeç¤¾ã®CEO)ã‹ã‚‰ã®ãƒ•ã‚£ãƒ¼ãƒ‰ãƒãƒƒã‚¯ã®è¦è«‹ã«ç”ãˆãŸã‚‚ã®ã§ã€ç§»è¡Œã‚’ç¤ºå”†ã™ã‚‹ãƒ„ã‚¤ãƒ¼ãƒˆã‚’è£œè¶³ã—ãŸã‚‚ã®ã ã¨èª¬æ˜Žã—ã¦
tk60qt 2016/07/19
scala

programming

Java
ãƒªãƒ³ã‚¯
ç¬¬63å›žã€€ã‚¢ãƒ‰ãƒ†ã‚¯ã‚¹ã‚¿ã‚¸ã‚ªã®ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã«èžãScalaã®é…åŠ› | gihyo.jp
ã‚µã‚¤ãƒãƒ¼ã‚¨ãƒ¼ã‚¸ã‚§ãƒ³ãƒˆã®ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆåºƒå‘Šäº‹æ¥ã‚’æŠ€è¡“é¢ã‹ã‚‰æ”¯ãˆã‚‹ã€Œã‚¢ãƒ‰ãƒ†ã‚¯ã‚¹ã‚¿ã‚¸ã‚ªã€ã§ã¯ã€é–¢æ•°åž‹è¨€èªžã®ä¸€ã¤ã§ã‚ã‚‹ScalaãŒç©æ¥µçš„ã«æ´»ç”¨ã•ã‚Œã¦ã„ã¾ã™ã€‚ä»Šå›žã€ã‚¹ãƒžãƒ¼ãƒˆãƒ•ã‚©ãƒ³ç‰¹åŒ–åž‹ã®ãƒªã‚¢ãƒ«ã‚¿ã‚¤ãƒ ã‚¿ãƒ¼ã‚²ãƒ†ã‚£ãƒ³ã‚°åºƒå‘Šã‚’å®Ÿç¾ã™ã‚‹ã‚µãƒ¼ãƒ“ã‚¹ã€ŒDynalystã€ï¼ˆâ å›³1ï¼‰ã‚’é–‹ç™ºã—ãŸéŸ“ç¿”å…ƒæ°ï¼ˆå†™çœŸ1â ï¼‰â ã€ãã—ã¦ã‚¹ãƒžãƒ¼ãƒˆãƒ•ã‚©ãƒ³å‘ã‘ã‚¢ãƒ‰ãƒ—ãƒ©ãƒƒãƒˆãƒ•ã‚©ãƒ¼ãƒ ã§ã‚ã‚‹ã€ŒAMoAdã‚¢ãƒ‰ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã€ï¼ˆâ å›³2ï¼‰ã®é–‹ç™ºã¨é‹ç”¨ã‚’æ‹…å½“ã™ã‚‹äº•ä¸Šã‚†ã‚Šæ°ï¼ˆå†™çœŸ2ï¼‰ã«ã€Scalaã®é…åŠ›ã‚’ä¼ºã„ã¾ã—ãŸã€‚ æœ€æ–°ã®ã‚¢ãƒ‰ãƒ†ã‚¯ã‚’è©°ã‚è¾¼ã‚“ã Dynalystã«Scalaã‚’æŽ¡ç”¨ â€•â€•æœ€åˆã«Scalaã«èˆˆå‘³ã‚’æŒã£ãŸãã£ã‹ã‘ã‚’æ•™ãˆã¦ãã ã•ã„ã€‚ äº•ä¸Šï¼šã‚µã‚¤ãƒãƒ¼ã‚¨ãƒ¼ã‚¸ã‚§ãƒ³ãƒˆã«å…¥ç¤¾ã™ã‚‹å‰ã‹ã‚‰é–¢æ•°åž‹è¨€èªžã«èˆˆå‘³ãŒã‚ã‚Šã€è©•ä¾¡ãŒå¿…è¦ã«ãªã‚‹ã¾ã§å®Ÿéš›ã®è¨ˆç®—ã‚’è¡Œã‚ãªã„é…å»¶è©•ä¾¡ã®ã—ãã¿ãªã©ã«é…åŠ›ã‚’æ„Ÿã˜ã¦ã„ã¾ã—ãŸã€‚ãã®ä¸ã§ã‚‚ç‰¹ã«Scalaã«ã¯JVMä¸Šã§å®Ÿè¡Œã§ãã‚‹ã¨ã„ã£ãŸãƒ¡ãƒªãƒƒãƒˆãŒã‚ã‚Š
tk60qt 2016/07/19
scala

programming
ãƒªãƒ³ã‚¯
How run sbt assembly command without tests from command line?
I have read questions: this and that. They suggest to modify sbt file. But I want run sbt clean assem bly without tests and do not modify sbt build files. Is it possible with sbt? In maven there is -DskipTest=true parameter, is there analog for sbt?
tk60qt 2016/07/18
programming

sbt

scala
ãƒªãƒ³ã‚¯
jstack ã§ã‚¹ãƒ¬ãƒƒãƒ‰ãƒ€ãƒ³ãƒ—ã‚’å–ã‚‹ - ã«ã‚‡ãã«ã‚‡ããƒ–ãƒã‚°
jstack ã¨ã„ã†ãƒ„ãƒ¼ãƒ«ãŒã‚ã‚‹ã€‚ã“ã®ãƒ„ãƒ¼ãƒ«ã¯ã€ç¾åœ¨å®Ÿè¡Œä¸ã® Java ãƒ—ãƒã‚»ã‚¹ã®ã‚¹ãƒ¬ãƒƒãƒ‰ã®çŠ¶æ…‹ã‚’å–å¾—å‡ºæ¥ã‚‹ãƒ„ãƒ¼ãƒ«ã ã€‚ æ€ã£ãŸã‚ˆã†ã«æ€§èƒ½ãŒå‡ºãªã„æ™‚ã‚„ãƒ‡ãƒƒãƒ‰ãƒãƒƒã‚¯ã£ã½ã„ç¾è±¡ãŒç™ºç”Ÿã—ãŸéš›ã¯ã“ã®ãƒ„ãƒ¼ãƒ«ã‚’ä½¿ã£ã¦ã‚¹ãƒ¬ãƒƒãƒ‰ã®çŠ¶æ…‹ã‚’å–å¾—ã€ã¤ã¾ã‚Šã‚¹ãƒ¬ãƒƒãƒ‰ãƒ€ãƒ³ãƒ—ã‚’å¾—ã¦ã€ãã“ã‹ã‚‰è§£æ±ºã®ç³¸å£ã‚’æŽ¢ã™ã€‚ ä»Šå›žã®ã‚µãƒ³ãƒ—ãƒ«ã‚³ãƒ¼ãƒ‰ã¯ä¸‹è¨˜ã‚³ãƒ¼ãƒ‰ã€‚ å°‘ã—é•·ã„ãŒã€Thread1 ã¨ Thread2 ã‚¯ãƒ©ã‚¹ã¯ã»ã¼åŒä¸€ã ã€‚é•ã†ã®ã¯ã€ãƒªã‚½ãƒ¼ã‚¹ã‚’ãƒãƒƒã‚¯ã™ã‚‹é †åºã€‚Thread1 ã‚¯ãƒ©ã‚¹ã¯ resource1, resource2 ã®é †ã«ãƒãƒƒã‚¯ã™ã‚‹ãŒã€Thread2 ã‚¯ãƒ©ã‚¹ã¯ resource2, resource1 ã®é †ã«ãƒãƒƒã‚¯ã™ã‚‹ã€‚ã¤ã¾ã‚Šã€ã“ã‚Œã‚‰ï¼’ã¤ã®ã‚¯ãƒ©ã‚¹ã‚’åŒæ™‚ã«å®Ÿè¡Œã™ã‚‹ã¨ãƒ‡ãƒƒãƒ‰ãƒãƒƒã‚¯ã‚’èµ·ã“ã™ã€‚ public class DeadLockTest { public static Object resource1 = new Obje
tk60qt 2016/07/17
Java

scala

programming
ãƒªãƒ³ã‚¯
Parallel Collections - ä¸¦åˆ—ã‚³ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³ã®è¨å®š - Scala Documentation
ã‚¿ã‚¹ã‚¯ã‚µãƒãƒ¼ãƒˆ ä¸¦åˆ—ã‚³ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³ã¯ã€æ¼”ç®—ã®ã‚¹ã‚±ã‚¸ãƒ¥ãƒ¼ãƒªãƒ³ã‚°ã«é–¢ã—ã¦ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«åŒ–ã•ã‚Œã¦ã„ã‚‹ã€‚ å…¨ã¦ã®ä¸¦åˆ—ã‚³ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³ã¯ã‚¿ã‚¹ã‚¯ã‚µãƒãƒ¼ãƒˆã¨ã„ã†ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã«ã‚ˆã‚Šãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿åŒ–ã•ã‚Œã¦ãŠã‚Šã€ã“ã‚ŒãŒã‚¿ã‚¹ã‚¯ã®ã‚¹ã‚±ã‚¸ãƒ¥ãƒ¼ãƒªãƒ³ã‚°ã¨ãƒ—ãƒã‚»ãƒƒã‚µã¸ã®è² è·åˆ†æ•£ (load balancing) ã‚’æ‹…å½“ã™ã‚‹ã€‚ ã‚¿ã‚¹ã‚¯ã‚µãƒãƒ¼ãƒˆã¯å†…éƒ¨ã«ã‚¹ãƒ¬ãƒƒãƒ‰ãƒ—ãƒ¼ãƒ«ã®å®Ÿè£…ã¸ã®å‚ç…§ã‚’æŒã£ã¦ãŠã‚Šã€ã‚¿ã‚¹ã‚¯ã‚’ã‚ˆã‚Šå°ã•ã„ã‚¿ã‚¹ã‚¯ã«ã„ã¤ã©ã®ã‚ˆã†ã«åˆ†å‰²ã™ã‚‹ã‹ã‚’æ±ºå®šã—ã¦ã„ã‚‹ã€‚ ã“ã®å†…éƒ¨ã®æŒ¯ã‚‹èˆžã„ã«é–¢ã—ã¦ã‚ˆã‚Šè©³ã—ãçŸ¥ã‚ŠãŸã„å ´åˆã¯ã“ã®ãƒ†ã‚¯ãƒŽãƒã‚¸ãƒ¼ãƒ¬ãƒãƒ¼ãƒˆã‚’å‚ç…§ã—ã¦ã»ã—ã„ [ 1 ]ã€‚ ç¾è¡Œã®ä¸¦åˆ—ã‚³ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³ã«ã¯ã„ãã¤ã‹ã®ã‚¿ã‚¹ã‚¯ã‚µãƒãƒ¼ãƒˆã®å®Ÿè£…ãŒã‚ã‚‹ã€‚ JVM 1.6 ä»¥ä¸Šã§ãƒ‡ãƒ•ã‚©ãƒ«ãƒˆã§ä½¿ã‚ã‚Œã‚‹ã®ã¯ã€ ForkJoinTaskSupport ã§ã€ã“ã‚Œã¯å†…éƒ¨ã§ãƒ•ã‚©ãƒ¼ã‚¯/ã‚¸ãƒ§ã‚¤ãƒ³ãƒ—ãƒ¼ãƒ«ã‚’ä½¿ã†ã€‚ JVM 1.5 ã¨ãã®ä»–ã®ãƒ•ã‚©ãƒ¼ã‚¯/ã‚¸ãƒ§ã‚¤ãƒ³ãƒ—ãƒ¼ãƒ«ã‚’ã‚µãƒãƒ¼ãƒˆã—ãªã„ JVM
tk60qt 2016/07/15
scala

programming
ãƒªãƒ³ã‚¯
Scalaã®ä¸¦è¡Œå‡¦ç†ã¨ã‚¢ã‚¯ã‚¿ãƒ¼ã€ä¸¦åˆ—ã‚³ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³
Scalaã®ä¸¦è¡Œå‡¦ç†ã¨ã‚¢ã‚¯ã‚¿ãƒ¼ã€ä¸¦åˆ—ã‚³ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³ï¼šã‚¹ã‚±ãƒ¼ãƒ©ãƒ–ãƒ«ã§é–¢æ•°åž‹ã§ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆæŒ‡å‘ãªScalaå…¥é–€ï¼ˆ10ï¼‰ï¼ˆ1/3 ãƒšãƒ¼ã‚¸ï¼‰ å‰å›žã®ãŠã•ã‚‰ã„ã¨ä»Šå›žã®å†…å®¹ å‰å›žã®è¨˜äº‹ã€ŒScalaã®æŠ½è±¡åž‹ã¨æš—é»™ã®åž‹å¤‰æ›ï¼å¼•æ•°ã€ãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿åˆ¶ç´„ã€ã§ã¯ã€ã€Œimplicitã€ã‚ãƒ¼ãƒ¯ãƒ¼ãƒ‰ã‚’ä½¿ç”¨ã—ãŸæš—é»™ã®åž‹å¤‰æ›ã¨æš—é»™ã®ãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿ãªã©ã‚’ç´¹ä»‹ã—ã¾ã—ãŸã€‚ ä»Šå›žã¯ScalaãŒæ¨™æº–ã§æŒã£ã¦ã„ã‚‹ä¸¦è¡Œå‡¦ç†ç”¨ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã¨ä¸¦åˆ—ã‚³ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³ã‚’ç´¹ä»‹ã—ã¾ã™ã€‚ ç¬¬1å›žè¨˜äº‹ã§ã¯ã€Scalaæ¨™æº–ã®REPLã¨Scala IDEã§å‹•ä½œã‚’ç¢ºèªã—ã¦ã¿ã¾ã—ãŸã€‚ä»Šå¾Œæœ¬è¨˜äº‹ã®ã‚µãƒ³ãƒ—ãƒ«ã‚³ãƒ¼ãƒ‰ã¯ã€ã©ã¡ã‚‰ã§ç¢ºèªã—ã¦ã‚‚å•é¡Œã¯ã‚ã‚Šã¾ã›ã‚“ãŒã€å¯¾è©±çš„ã«å®Ÿè¡Œã§ãã€1æ–‡ã”ã¨ã«ã‚³ãƒ¼ãƒ‰ã®çµæžœãŒåˆ†ã‹ã£ã¦ä¾¿åˆ©ãªã®ã§ã€åŸºæœ¬çš„ã«ã¯REPLã‚’ç”¨ã„ã¦èª¬æ˜Žã—ã¦ã„ãã¾ã™ã€‚ Scala IDEã‚’ä½¿ç”¨ã™ã‚‹å ´åˆã€ç¬¬1å›žè¨˜äº‹ã®ã€ŽScala IDE for Eclipseã§ã€ŒHello Scalaï¼ã€ã€ã‚’
tk60qt 2016/07/15
scala

programming
ãƒªãƒ³ã‚¯
How to set main class in build?
tk60qt 2016/07/14
scala

programming
ãƒªãƒ³ã‚¯
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