[B! lambda] dobocchoã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

doboccho id:doboccho

lambdaã«é–¢ã™ã‚‹dobocchoã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (5)

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Java8 Lambdaã®æ–‡æ³•æ‹¡å¼µã¾ã¨ã‚ - ãã—ã ã®Hatena
ãƒ‡ãƒ•ã‚©ãƒ«ãƒˆãƒ¡ã‚½ãƒƒãƒ‰ã¯å‰ã«è§£èª¬ã—ã¾ã—ãŸã€‚ Java8ã§æœ€ã‚‚ã‚¤ãƒ³ãƒ‘ã‚¯ãƒˆã®ã‚ã‚‹æ§‹æ–‡æ‹¡å¼µã€ãƒ‡ãƒ•ã‚©ãƒ«ãƒˆãƒ¡ã‚½ãƒƒãƒ‰ ã“ã“ã§ã¯ã€ãã‚Œä»¥å¤–ã®æ§‹æ–‡æ‹¡å¼µã«ã¤ã„ã¦ã¾ã¨ã‚ã¦ãŠãã¾ã™ã€‚ ãƒ©ãƒ ãƒ€å¼ å®Ÿè£…ã™ã¹ããƒ¡ã‚½ãƒƒãƒ‰ãŒã²ã¨ã¤ã ã‘ã®ã‚¤ãƒ³ã‚¿ãƒ•ã‚§ãƒ¼ã‚¹ã‚’é–¢æ•°åž‹ã‚¤ãƒ³ã‚¿ãƒ•ã‚§ãƒ¼ã‚¹ã¨ã„ã„ã¾ã™ã€‚ UnaryOperatorã‚¤ãƒ³ã‚¿ãƒ•ã‚§ãƒ¼ã‚¹ã¯å®Ÿè£…ã™ã¹ããƒ¡ã‚½ãƒƒãƒ‰ãŒapplyãƒ¡ã‚½ãƒƒãƒ‰ã²ã¨ã¤ã ã‘ãªã®ã§ã€é–¢æ•°åž‹ã‚¤ãƒ³ã‚¿ãƒ•ã‚§ãƒ¼ã‚¹ã«ãªã‚Šã¾ã™ã€‚ ãŸã¨ãˆã°ã€UnaryOperatorã‚¤ãƒ³ã‚¿ãƒ•ã‚§ãƒ¼ã‚¹ã‚’å®Ÿè£…ã—ãŸã‚¯ãƒ©ã‚¹ã‚’å®šç¾©ã™ã‚‹ã¨æ¬¡ã®ã‚ˆã†ã«ãªã‚Šã¾ã™ã€‚ class MyOp implements UnaryOperator<String>{ @Override public String apply(String t) { return "** " + t + " **"; } } ã“ã®UnaryOperatorã‚¤ãƒ³ã‚¿ãƒ•ã‚§ãƒ¼ã‚¹ã‚’ä½¿ã†ã€List#replaceAllã‚’
doboccho 2013/08/24
Java8

lambda
ãƒªãƒ³ã‚¯
Java8ã®Streamã®ç›®çš„ã¨æ›¸ãã‚„ã™ã•ã‚„å¯èªæ€§ã€ä¸¦è¡Œå‡¦ç†ã®åŠ¹æžœã«ã¤ã„ã¦ - ãã—ã ã®Hatena
ã•ã¦ã€å‰å›žJava8ã®Streamã®ä½¿ã„æ–¹ã‚’ã–ã£ã¨è¦‹ã¦ã¿ãŸã®ã§ã™ã‘ã©ã€ã¯ã¦ãªãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ã®ã‚³ãƒ¡ãƒ³ãƒˆã§ã€ŒJavaãŒä½¿ã‚ã‚Œã¦ã„ã‚‹é ˜åŸŸã§ã“ã‚“ãªè¨€èªžæ‹¡å¼µã¯å¿…è¦ã‹ã€ã€Œå¯èªæ€§ãŒæãªã‚ã‚Œã¦ã„ã¦å˜ãªã‚‹è‡ªå·±æº€è¶³ã§ã¯ãªã„ã‹ã€ã®ã‚ˆã†ãªã‚³ãƒ¡ãƒ³ãƒˆãŒã¤ã„ã¦ã„ã¾ã—ãŸã€‚ å®Ÿéš›ã©ã†ãªã®ã‹è€ƒãˆã¦ã¿ã¾ã™ã€‚ Java8ã®Streamã®ç›®çš„ ã§ã¯ã€ã„ã¾JavaãŒä½¿ã‚ã‚Œã¦ã„ã‚‹é ˜åŸŸã‚’è€ƒãˆã¦ã¿ã¾ã—ã‚‡ã†ã€‚ JavaãŒã„ã¾ã‚ˆãä½¿ã‚ã‚Œã¦ã„ã‚‹ã®ã¯ã€ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã‚µã‚¤ãƒ‰ã§ã¯ãªãã‚µãƒ¼ãƒãƒ¼ã‚µã‚¤ãƒ‰ã§ã™ã€‚ã¨ãã«ã€ç›´æŽ¥ã‚¢ã‚¯ã‚»ã‚¹ã‚’ã†ã‘ã¤ã‘ã‚‹ã‚µãƒ¼ãƒãƒ¼ã§ã¯ãªãã€åˆ†æ•£ãƒ‡ãƒ¼ã‚¿å‡¦ç†ã®ãŸã‚ã®Hadoopã‚„HBaseã€å…¨æ–‡æ¤œç´¢ã‚¨ãƒ³ã‚¸ãƒ³ã®Luceneãªã©ã€ãƒãƒƒã‚¯ã‚¨ãƒ³ãƒ‰å‡¦ç†ã‚’è¡Œã†è£½å“ã®ã‚·ã‚§ã‚¢ãŒå¤§ãã„ã‚ˆã†ã«è¦‹ãˆã¾ã™ã€‚ Twitterã‚„Googleã§ã‚‚ã€Javaã§æ›¸ã‹ã‚ŒãŸãƒãƒƒã‚¯ã‚¨ãƒ³ãƒ‰ãŒå‹•ã„ã¦ã„ã‚‹ã‚ˆã†ã§ã™ã€‚Facebookã‚‚åˆ†æžç³»ã§ã¯Javaã‚’ä½¿ã£ã¦ã„ã‚‹ã‚ˆã†ã§ã™ã€‚ å¤§æ‰‹ã‚µãƒ¼ãƒ“ã‚¹ã§ãƒãƒƒ
doboccho 2013/05/06
Java8

lambda
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Everything about Java 8 â€“ TechEmpower
The following post is a comprehensive summary of the developer-facing changes coming in Java 8. As of March 18, 2014, Java 8 is now generally available. I used preview builds of IntelliJ for my IDE. It had the best support for the Java 8 language features at the time I went looking. You can find those builds here: IntelliJIDEA EAP. Interface improvements Interfaces can now define static methods. F
doboccho 2013/03/28
Java

lambda

Java8
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JavaOne 2012 ãƒ†ã‚¯ãƒŽãƒã‚¸ãƒ¼ãƒ»ã‚ãƒ¼ãƒŽãƒ¼ãƒˆ (Day 0)
JavaOne 2012 ãƒ†ã‚¯ãƒŽãƒã‚¸ãƒ¼ãƒ»ã‚ãƒ¼ãƒŽãƒ¼ãƒˆ (DayÂ 0) 2012å¹´10æœˆ3æ—¥ at 2:41 åˆå¾Œ ã‚¹ãƒˆãƒ©ãƒ†ã‚¸ãƒ¼ãƒ»ã‚ãƒ¼ãƒŽãƒ¼ãƒˆã®å¾Œã€ä¼‘æ†©ã‚’ã¯ã•ã‚“ã§ã€ãƒ†ã‚¯ãƒŽãƒã‚¸ãƒ¼ã‚ãƒ¼ãƒŽãƒ¼ãƒˆãŒé–‹å‚¬ã•ã‚ŒãŸã€‚ãƒ†ã‚¯ãƒŽãƒã‚¸ãƒ¼ãƒ»ã‚ãƒ¼ãƒŽãƒ¼ãƒˆã«å…ˆç«‹ã¡ç™»å£‡ã—ãŸã®ã¯ã€Java ã®ãƒãƒ¼ãƒ•ãƒ»ã‚¢ãƒ¼ã‚ãƒ†ã‚¯ãƒˆã§ã‚ã‚‹ Mark Reinhold ã ã€‚ä»Šå¹´ã®ãƒ†ã‚¯ãƒŽãƒã‚¸ãƒ¼ãƒ»ã‚ãƒ¼ãƒŽãƒ¼ãƒˆã¯ã€Java SE, Java FX, Java ME ..ã¨å€‹ã€…ã®æŠ€è¡“ã‚’ç´¹ä»‹ã™ã‚‹å½¢å¼ã§ã¯ãªããã‚Œãžã‚Œé–¢é€£ã™ã‚‹æŠ€è¡“ã‚’ã‚¹ãƒˆãƒ¼ãƒªãƒ¼ã‚’æŒã£ã¦é–¢é€£ã™ã‚‹äººã‚’å£‡ä¸Šã«æ‹›ãã„ã‚ŒãªãŒã‚‰ Mark ãŒå¸ä¼šã‚’å‹™ã‚ã‚‹å½¢ã§é€²è¡Œã—ã¦ã„ã£ãŸã€‚ Mark ã¯ã¾ãšã€Java FX é–‹ç™ºãƒãƒ¼ãƒ ã® Richard Bair ã¨ Jasper Potts ã‚’å£‡ä¸Šã«æ‹›ãã€Java FX ã§ä½œæˆã—ãŸ ä»Šå¹´ã® JavaOne ã®ã‚¹ã‚±ã‚¸ãƒ¥ãƒ¼ãƒ«ãƒ»ãƒ“ãƒ«ãƒ€ã®ãƒ‡ãƒ¢ã‚’è¡Œã£ãŸã€‚ãƒ‡ãƒ¢ã¯ã€Windows ç’°å¢ƒã§è¡Œã‚ã‚ŒãŸå¾Œã€
doboccho 2012/10/03
lambda
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Project Lambda
ã“ã®ã‚¨ãƒ³ãƒˆãƒªã¯ Java Advent Calendar 2011 ã®ä¸€ç’°ã§ã€ç¬¬ 1 æ—¥ç›®ã®ã‚¨ãƒ³ãƒˆãƒªãƒ¼ã§ã™ã€‚ ã‚„ã£ã±ã‚Šã€æ«»åºã¨ã„ãˆã° Java SE ã®æ–°ã—ã„ã¨ã“ã‚ã§ã—ã‚‡ã† (ã“ã‚ŒåŽ»å¹´ã‚‚æ›¸ã„ãŸãªã ^ ^;;)ã€‚ã¨ã„ã†ã“ã¨ã§ã€Java SE 8 ã®ç›®çŽ‰æ©Ÿèƒ½ã¨ãªã£ã¦ã„ã‚‹ Project Lambda ã‚’å–ã‚Šã‚ã’ã¾ã™ã€‚ çµæžœçš„ã«è¶…é•·æ–‡ã«ãªã£ã¦ã—ã¾ã„ã¾ã—ãŸww åŽ³å¯†ã«ã„ãˆã°ã€Lambda ã¯ã‚¯ãƒãƒ¼ã‚¸ãƒ£ã§ã¯ã‚ã‚Šã¾ã›ã‚“ã€‚ è¿½è¨˜: ã“ã“ã§ã„ã£ã¦ã„ã‚‹ã‚¯ãƒãƒ¼ã‚¸ãƒ£ã¯ãƒ¬ã‚ã‚·ã‚«ãƒ«ã‚¹ã‚³ãƒ¼ãƒ—ãŒä½¿ç”¨ã§ãã‚‹ç„¡åé–¢æ•°ã®ã“ã¨ã‚’æ„å‘³ã—ã¦ã„ã¾ã™ã€‚ (ã‚‹ã¨ã•ã‚“ã€ã‚³ãƒ¡ãƒ³ãƒˆã‚ã‚ŠãŒã¨ã†ã”ã–ã„ã¾ã—ãŸ) ã§ã¯ã€ãƒ©ãƒ ãƒ€å¼ã¨ã¯ãªã‚“ãªã®ã‹? ãã‚Œã¯ã‚¿ã‚¹ã‚¯ã‚’ç°¡å˜ã«æ›¸ãã“ã¨ã‚’ç›®çš„ã¨ã—ãŸã€å˜ä¸€ãƒ¡ã‚½ãƒƒãƒ‰ã®ã‚¤ãƒ³ã‚¿ãƒ•ã‚§ãƒ¼ã‚¹ã®ã‚¤ãƒ³ã‚¹ã‚¿ãƒ³ã‚¹ç”Ÿæˆã‚’ç°¡å˜ã«æ›¸ããŸã‚ã®ç°¡æ˜“è¨˜æ³•ã§ã™ã€‚ã‚ˆã†ã™ã‚‹ã«ã‚·ãƒ³ã‚¿ãƒƒã‚¯ã‚¹ã‚·ãƒ¥ã‚¬ãƒ¼ã§ã—ã‹ã‚ã‚Šã¾ã›ã‚“ã€‚ ã“ã“ã§ã„ã†ã‚¿ã‚¹ã‚¯ã¯ã€ç‰¹ã«ãƒ‘ãƒ©ãƒ¬ãƒ«ã«å‡¦
doboccho 2012/03/24
Java

lambda
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