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somemo id:somemo

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Java8ã®HotSpotVMã‹ã‚‰Permanenté ˜åŸŸãŒæ¶ˆãˆãŸç†ç”±ã¨ãã®å½±éŸ¿ | ã‚®ãƒ¼ã‚¯ã‚’ç›®æŒ‡ã—ã¦
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somemo 2014/07/30
java

java8

jvm
ãƒªãƒ³ã‚¯
StringBuilderã‚’ä½¿ã£ãŸã‚¯ã‚½ã‚³ãƒ¼ãƒ‰ã¯ã©ã“ã¾ã§é…ã„ã‹ - ãã—ã ã®Hatena
â€» 4/9 11:25 ã„ã‚ã„ã‚è¨ˆæ¸¬ã—ãªãŠã—ã¦ã¾ã™ã€‚ã“ã¡ã‚‰ã‚‚å‚ç…§ Javaã§æ–‡å—åˆ—é€£çµã™ã‚‹å ´åˆã«ã¯+æ¼”ç®—åã‚ˆã‚Šã‚‚StringBuilderã‚’ä½¿ã†ã¹ãã€ã¨ã„ã†è©±ãŒã‚ã‚‹ã®ã§ã™ãŒã€ã‚ˆã sb.append("[" + data + "]"); ã¿ãŸã„ãªã‚³ãƒ¼ãƒ‰ã‚’ã¿ã‹ã‘ã¦ã€ã‚ã‚“ã¾ã‚Šæ„å‘³ãªã„ãªãƒ¼ã¨æ€ã£ãŸã‚Šã—ã¾ã™ã€‚ ã‚ã¨ã€ sb.append("title:"); sb.append("[" + data + "]"); ã¿ãŸã„ã«ã€+æ¼”ç®—åã‚’ä½¿ã£ãŸä¸€è¡Œã®å¼ã«ã—ã¦ sb = "title:" + "[" + data + "]"; ã¨ã—ã¦ãŠã‘ã°ã€Œtitle:ã€ã¨ã€Œ[ã€ã¯ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«æ™‚ç‚¹ã§æœ€é©åŒ–ã•ã‚ŒãŸã®ã«ã€ã£ã¦ã‚³ãƒ¼ãƒ‰ã‚‚ã‚ã‚Šã¾ã™ã€‚ ã¨ã„ã†ã“ã¨ã§Twitterã§ Javaã§ã®æ–‡å—åˆ—é€£çµã¯+ã‚’ä½¿ã†ã¹ãã€ã£ã¦ã‚„ã£ãŸã»ã†ãŒã€StringBuilderä½¿ã£ãŸsb.append("[" + data + "]")ã¿ãŸã„ãªã‚¯
somemo 2014/04/09
java

java8
ãƒªãƒ³ã‚¯
New Feature Of Java SE 8
New Feature Of Java SE 8 1. Copyright Â© 2014, Oracle and/or its affiliates. All rights reserved.1 2. Copyright Â© 2014, Oracle and/or its affiliates. All rights reserved.2 ä»¥ä¸‹ã®äº‹é …ã¯ã€å¼Šç¤¾ã®ä¸€èˆ¬çš„ãªè£½å“ã®æ–¹å‘æ€§ã«é–¢ã™ã‚‹æ¦‚è¦ã‚’èª¬æ˜Žã™ã‚‹ã‚‚ã®ã§ã™ ã€‚ã¾ãŸã€æƒ…å ±æä¾›ã‚’å”¯ä¸€ã®ç›®çš„ã¨ã™ã‚‹ã‚‚ã®ã§ã‚ã‚Šã€ã„ã‹ãªã‚‹å¥‘ç´„ã«ã‚‚çµ„ã¿è¾¼ã‚€ã“ ã¨ã¯ã§ãã¾ã›ã‚“ã€‚ä»¥ä¸‹ã®äº‹é …ã¯ã€ãƒžãƒ†ãƒªã‚¢ãƒ«ã‚„ã‚³ãƒ¼ãƒ‰ã€æ©Ÿèƒ½ã‚’æä¾›ã™ã‚‹ã“ã¨ã‚’ã‚³ãƒŸãƒƒ ãƒˆãƒ¡ãƒ³ãƒˆï¼ˆç¢ºç´„ï¼‰ã™ã‚‹ã‚‚ã®ã§ã¯ãªã„ãŸã‚ã€è³¼è²·æ±ºå®šã‚’è¡Œã†éš›ã®åˆ¤æ–ææ–™ã«ãªã•ã‚‰ãªã„ ã§ä¸‹ã•ã„ã€‚ã‚ªãƒ©ã‚¯ãƒ«è£½å“ã«é–¢ã—ã¦è¨˜è¼‰ã•ã‚Œã¦ã„ã‚‹æ©Ÿèƒ½ã®é–‹ç™ºã€ãƒªãƒªãƒ¼ã‚¹ãŠã‚ˆã³æ™‚ æœŸã«ã¤ã„ã¦ã¯ã€å¼Šç¤¾ã®è£é‡ã«ã‚ˆã‚Šæ±ºå®šã•ã‚Œã¾ã™ã€‚ Oracleã¯ã€ç±³å›½ã‚ªãƒ©ã‚¯ãƒ«ã‚³ãƒ¼ãƒãƒ¬
somemo 2014/03/21
java

java8
ãƒªãƒ³ã‚¯
ã‚ãªãŸã®Javaã‚³ãƒ¼ãƒ‰ã‚’ã‚¹ãƒƒã‚ãƒªã•ã›ã‚‹ã€åœ°å‘³ã«ä¾¿åˆ©ãªæ–°API 10é¸ï¼ˆå‰ç·¨ï¼‰ - Taste of Tech Topics
ã“ã‚“ã«ã¡ã¯ï¼ ã‚¢ã‚ãƒã§ã™ã€‚ ï¼Žï¼Žï¼ŽT3ãƒ–ãƒã‚°ã¯åˆç™»å ´ã‹ã‚‚ã—ã‚Œã¾ã›ã‚“ã€‚ãƒã‚¸ãƒ¡ãƒžã‚·ãƒ†ã€‚ ä»¥å¾ŒãŠè¦‹çŸ¥ã‚ŠãŠãã‚’ã€‚ ã„ã‚ˆã„ã‚ˆã€2014å¹´3æœˆã€Java8ãŒæ£å¼å…¬é–‹ã•ã‚Œã¾ã™ãã€‚ ãªã‚“ã¨è¨€ã£ã¦ã‚‚ã€Java8ã®æ³¨ç›®æ©Ÿèƒ½ã¯ãƒ©ãƒ ãƒ€å¼ã§ã™ã®ã§ã€ãƒ©ãƒ ãƒ€å¼ã‚„åž‹æŽ¨è«–ã«é–¢ã™ã‚‹è¨˜äº‹ã¯å¤šã„ã§ã™ã€‚ ä¸–ã®ä¸ã§ã€ŒJava8ã€ã¨æ¤œç´¢ã™ã‚‹ã¨ã€çš†ã•ã‚“ã„ã‚ã„ã‚ã¨è¨˜äº‹ã‚’æ›¸ã‹ã‚Œã¦ã„ã‚‹ã®ã§ã€ãŠãŠã‚ˆãã®äº‹ã¯ã“ã‚Œã§åˆ†ã‹ã£ã¡ã‚ƒã†ã‚ˆã†ãªæ°—ãŒã—ã¾ã™ã€‚ ãŒã€ å®Ÿã¯åœ°å‘³ã«ä¾¿åˆ©ãªAPIãŒè¿½åŠ ã•ã‚Œã¦ã„ãŸã‚Šã™ã‚‹ã“ã¨ã‚’æœ€è¿‘çŸ¥ã‚Šã¾ã—ãŸã€‚ ã“ã‚Œã¯ã‚ã¾ã‚Šè§¦ã‚Œã‚‰ã‚Œã¦ã„ãªã„ãžã€ã¨ã€‚ ã¨ã„ã†ã‚ã‘ã§ã€ã“ã®ã‚¨ãƒ³ãƒˆãƒªã§ã¯ã€ã‚ã¾ã‚Šæ—¥æœ¬èªžã§æƒ…å ±ã®ç„¡ã„ã€ã—ã‹ã—åœ°å‘³ã«ä¾¿åˆ©ãªAPIã«å®Ÿéš›ã«è§¦ã‚Œã¦ã¿ã¾ã™ã€‚ å¤§äº‹ãªã¨ã“ã‚ãªã®ã§ï¼’å›žå¼·èª¿ã—ã¦æ›¸ã„ã¦ã¿ã¾ã—ãŸã€‚ ä»Šå›žã¯ã€å‰ç·¨ã¨ã—ã¦ï¼”ã¤ç´¹ä»‹ã—ã¾ã™ã€‚ â€»APIã®ç´¹ä»‹ã¨è¨€ã„ã¤ã¤ã€ã‚³ãƒ¼ãƒ‰ã«ã¯ãƒ©ãƒ ãƒ€å¼ã‚’ä½¿ã£ãŸã‚³ãƒ¼ãƒ‰ãŒæ™®é€šã«å‡ºã¦ã‚‹ã®ã§ã€ã”äº†æ‰¿ãã ã•ã„ã€‚ (ã‚€ã—ã‚ã€
somemo 2014/03/20
java

java8
ãƒªãƒ³ã‚¯
ãƒ©ãƒ ãƒ€ç¦æ¢ã«ã¤ã„ã¦æœ¬æ°—å‡ºã—ã¦è€ƒãˆã¦ã¿ãŸ - 9ã¤ã®ãƒ‘ã‚¿ãƒ¼ãƒ³ã§è¦‹ã‚‹Stream API - Taste of Tech Topics
ã“ã‚“ã«ã¡ã¯ @cero_t ã§ã™ã€‚ ä»Šæ—¥ã®ãƒ†ãƒ¼ãƒžã¯ãƒ»ãƒ»ãƒ»ãƒ©ãƒ”ãƒ¥ã‚¿ç¦æ¢ä»¤ï¼ ãƒãƒ«ã‚¹ï¼ ã„ã‚„é•ã†ã€‚ãƒ©ãƒ ãƒ€ç¦æ¢ä»¤ã€ã§ã™ã€‚ ã•ã¦ã€ãªã‹ãªã‹ã®æ»‘ã‚Šå‡ºã—ã§ã™ãŒã€ä»Šæ—¥ã¯ãŸã ã®ãƒ©ãƒ ãƒ€ã®ç´¹ä»‹ã§ã¯ãªãã€ç¦æ¢ä»¤ã«ä¸»çœ¼ã‚’ç½®ã„ã¦èªžã‚Šã¾ã™ã€‚ ã“ã®ã‚¨ãƒ³ãƒˆãƒªãƒ¼ã¯ã€Java Advent Calendar 2013ã®12/16åˆ†ã®æŠ•ç¨¿ã§ã™ã€‚ http://www.adventar.org/calendars/145 å‰æ—¥ã¯ @sugarlife ã•ã‚“ã® JDK 8 æ–°æ©Ÿèƒ½ãƒ€ã‚¤ã‚¸ã‚§ã‚¹ãƒˆ (JDK 8 Features) ã§ã™ã€‚ ç¿Œæ—¥ã¯ @setoazusa ã•ã‚“ã§ã™ã€‚ ãƒ©ãƒ ãƒ€ç¦æ¢ä»¤ã¯ã‚ã‚Šå¾—ã‚‹ã®ã‹ï¼Ÿ å‹‰å¼·ä¼šã‚„ãã®æ‡‡è¦ªä¼šãªã©ã§ã€ãŸã³ãŸã³ã€Œãƒ©ãƒ ãƒ€ç¦æ¢ä»¤ãŒå‡ºã‚‹ã®ã§ã¯ãªã„ã‹ã€ãŒè©±é¡Œã«ä¸Šã‚‹ã“ã¨ãŒã‚ã‚Šã¾ã™ã€‚ ã€Œãã‚Šã‚ƒç¦æ¢ã™ã‚‹çµ„ç¹”ã‚‚ã‚ã‚‹ã§ã—ã‚‡ã†ãã€ã¨ã„ã†ã®ãŒãŠæ±ºã¾ã‚Šã®ç”ãˆãªã®ã§ã™ãŒã€ãŸã ãã‚Œã«å¾“ã†ã ã‘ã§ã¯é¢ç™½ãã‚ã‚Šã¾ã›ã‚“ã—ã€è¦ç´ æŠ€è¡“ã®ç™ºå±•ã‚‚
somemo 2013/12/18
java

java8
ãƒªãƒ³ã‚¯
Java SE 8 lambdaã§å¤‰ã‚ã‚‹ ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã‚¹ã‚¿ã‚¤ãƒ«
ç¦å²¡JavaOne2013å ±å‘Šä¼šç¬¬2å¼¾ã§ã®ãƒ—ãƒ¬ã‚¼ãƒ³ ãƒ©ãƒ ãƒ€æ§‹æ–‡ã®æ–‡æ³•ã‚ˆã‚Šã‚‚ã€ãã®ä½¿ã„æ–¹ã¨ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã‚¹ã‚¿ã‚¤ãƒ«ã«ã¤ã„ã¦ã‚’ä¸»ã«ã¾ã¨ã‚ã¾ã—ãŸã€‚Read less
somemo 2013/11/23
java

Java8
ãƒªãƒ³ã‚¯
Java8ã®Streamã‚’ä½¿ã„ã“ãªã™ - ãã—ã ã®Hatena
ã•ã¦ã€Java8ã§é–¢æ•°åž‹ã£ã½ã„ã“ã¨ã‚’ã‚„ã£ã¦éŠã‚“ã§ã¿ãŸã‚ã‘ã§ã™ãŒã€å®Ÿéš›ã¯ãã‚“ãªæ›¸ãæ–¹ã—ã¾ã›ã‚“ã‚ˆãã€‚ Java8ã§å®Ÿéš›ã«ä½¿ã†ã®ã¯ã€Streamã§ã™ã€‚ ã¨ã„ã†ã“ã¨ã§ã€Streamã®ä½¿ã„æ–¹ã‚’ã²ã¨ã¨ãŠã‚Šè¦‹ã¦ã¿ã¾ã™ã€‚ â€»5/17 ä»•æ§˜å¤‰æ›´ãŒã‚ã£ãŸã®ã§ã€ä¿®æ£ã—ã¾ã—ãŸ åŸºæœ¬ ã¾ãšã¯ã€Iterableã‚¤ãƒ³ã‚¿ãƒ•ã‚§ãƒ¼ã‚¹ã«ç”¨æ„ã•ã‚ŒãŸforEachãƒ¡ã‚½ãƒƒãƒ‰ã‚’è¦‹ã¦ã¿ã¾ã—ã‚‡ã†ã€‚ List<String> names = Arrays.asList("hoge hoge", "foo bar", "naoki", "kishida"); names.forEach(s -> System.out.println(s)); ã“ã‚Œã§æ¬¡ã®ã‚ˆã†ã«è¡¨ç¤ºã•ã‚Œã¾ã™ã€‚ hoge hoge foo bar naoki kishida ã„ã¾ã¾ã§ã®æ‹¡å¼µforã ã¨æ¬¡ã®ã‚ˆã†ã«æ›¸ã„ã¦ã¾ã—ãŸ List<String> names = Arrays.a
somemo 2013/05/05
java

java8

linq
ãƒªãƒ³ã‚¯
Java 8ã‚’é–¢æ•°åž‹ã£ã½ãä½¿ã†ãŸã‚ã®ãŠã¾ã˜ãªã„ã‚’F#ã§ã‚„ã£ã¦ã¿ãŸ - ãã‚‹ãã‚‹ï½ž
Java 8ã‚’é–¢æ•°åž‹ã£ã½ãä½¿ã†ãŸã‚ã®ãŠã¾ã˜ãªã„ - ãã—ã ã®ã¯ã¦ãª Java 8ã‚’é–¢æ•°åž‹ã£ã½ãä½¿ã†ãŸã‚ã®ãŠã¾ã˜ãªã„ã‚’C#ã§ã‚„ã£ã¦ã¿ãŸ - ãã‚‹ãã‚‹ï½ž Java ã‚‚ C# ã‚‚å¤§å¤‰ã§ã™ãã€‚ F# ã•ã‚“ã¯ã€ãƒ©ãƒ ãƒ€å¼ã‚‚é–¢æ•°åž‹ã‚‚æœ€åˆã‹ã‚‰ä½¿ãˆãŸã®ã§ã€ä¼¼ãŸã‚ˆã†ãªã“ã¨ã¯ã™ã§ã«ã§ãã¾ã™ã€‚ ä¸Šè¨˜ã®è¨˜äº‹ã®ãƒ‘ã‚¯ãƒªãªã®ã§ã€ä¸Šè¨˜ã®è¨˜äº‹ã‚’ã¾ãšã¯èªã‚“ã§ã‹ã‚‰èªã‚€ã“ã¨ã‚’ãŠã™ã™ã‚ã—ã¾ã™ã€‚ é–¢æ•°åž‹(é–¢æ•°ã‚’è¡¨ã™åž‹ã®æ–¹) F# ã§ã¯ FSharpFunc ã¨ã„ã†åž‹ãŒã‚ã‚Šã¾ã™ã€‚åå‰ç©ºé–“ã‚„åž‹ãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿ã¾ã§å«ã‚ã‚‹ã¨ã€Microsoft.FSharp.Core.FSharpFunc<'T, 'U> ã§ã™ã€‚ ãŸã ã€ã“ã®åž‹ã‚’ç›´æŽ¥ä½¿ã†ã“ã¨ã¯ã‚ã‚Šã¾ã›ã‚“ã—ã€è¦‹ã‚‹ã“ã¨ã‚‚ãã†ãã†ãªã„ã§ã™ã€‚ ãã®ä»£ã‚ã‚Šã«ã€'T -> 'U ã¨ã„ã†è¡¨è¨˜ãŒä½¿ãˆã¾ã™ã€‚ã€Œ'T ã‚’å—ã‘å–ã£ã¦ 'U ã‚’è¿”ã™é–¢æ•°ã€ã¨èªã¿ã¾ã™ã€‚ ã¡ãªã¿ã«ã€åž‹ãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿ã®æœ€åˆã«ã€Œ'ã€ãŒä»˜ã„ã¦ã„ã‚‹ã®ãŒå‰²ã¨å¤§
somemo 2013/05/01
fsharp

java

java8

CSharp
ãƒªãƒ³ã‚¯
Java8ã§BDDã£ã½ããƒ†ã‚¹ãƒˆã‚’æ›¸ã‘ã‚‹ã‹ã‚‚ã—ã‚Œãªã„ã‚¢ã‚¤ãƒ‡ã‚¢ â€” è£ç´™
Jasmineã§JavaScriptã®ãƒ†ã‚¹ãƒˆæ›¸ã„ãŸã‚ŠJava8ã®ãƒ©ãƒ ãƒ€ã«æ€ã„ã‚’é¦³ã›ã¦ã„ãŸã‚‰ãªã‚“ã¨ãªãæ€ã„ã¤ãã¾ã—ãŸã€‚ ãƒ©ãƒ ãƒ€ã«ã‚¤ãƒ³ã‚¹ã‚¿ãƒ³ã‚¹ã‚¤ãƒ‹ã‚·ãƒ£ãƒ©ã‚¤ã‚¶ã‚’çµ„ã¿åˆã‚ã›ãŸã‚‰ã“ã‚“ãªæ„Ÿã˜ã§ãƒ†ã‚¹ãƒˆãŒæ›¸ã‘ãã†ã§ã™ã€‚ package app; public class CalcSpec extends Specs {{ it("1 è¶³ã™ 2 ã¯ 3", () -> { expect(() -> 1 + 2).toEqual(3); }); it("1 å‰²ã‚‹ 0 ã¯ä¾‹å¤–", () -> { expect(() -> 1 / 0).toThrow(ArithmeticException.class); }); }} ã†ã‚€ã€Jasmineã½ã„ã€‚ ã¾ã‚å®Ÿã¯BDDã½ã„ã¨ã‹ã‚ˆãåˆ†ã‹ã£ã¦ã„ã¾ã›ã‚“ãŒã€‚ itãƒ¡ã‚½ãƒƒãƒ‰ã‚’å‘¼ã¶ã¨ç¬¬ä¸€å¼•æ•°ã®ãƒ†ã‚¹ãƒˆåã‚’keyã€ç¬¬äºŒå¼•æ•°ã®Runnableã®ã‚ˆã†ãªã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã‚’valueã¨ã™ã‚‹ãƒžãƒƒãƒ—
somemo 2013/03/24
java8

java

BDD
ãƒªãƒ³ã‚¯
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