{ "version": "https://jsonfeed.org/version/1", "title": "Scala", "description": "Object-Oriented Meets Functional", "home_page_url": "https://www.v2ex.com/go/scala", "feed_url": "https://www.v2ex.com/feed/scala.json", "icon": "https://cdn.v2ex.com/navatar/c8ff/e9a5/124_large.png?m=1488098428", "favicon": "https://cdn.v2ex.com/navatar/c8ff/e9a5/124_normal.png?m=1488098428", "items": [ { "author": { "url": "https://www.v2ex.com/member/timzaak", "name": "timzaak", "avatar": "https://cdn.v2ex.com/gravatar/7dffd67fee36487e77dabd9f1abbd8e7?s=73&d=retro" }, "url": "https://www.v2ex.com/t/1141501", "title": "\u8fd9\u4e2a\u5206\u7c7b\u597d\u4e45\u6ca1\u65b0\u5e16\u5b50\u4e86\uff0c\u8bb0\u5f55\u4e0b\u6700\u65b0\u7528 scala 3 \u5199\u7684\u9879\u76ee", "id": "https://www.v2ex.com/t/1141501", "date_published": "2025-06-27T08:31:51+00:00", "content_html": "

https://github.com/timzaak/log-http-proxy\nmitm http/https \u4ee3\u7406\uff0c \u9762\u5411 Qt \u7b49\u4e0d\u65b9\u4fbf\u8c03\u8bd5 https/http \u8bf7\u6c42\u7684\uff0c\u5f00\u542f\u540e\uff0c \u684c\u9762\u5f00\u53d1\u7528 switchHosts \u4fee\u6539\u4e0b dns \u89e3\u6790\uff0c\u53ef\u5728 web \u9875\u9762\u5c31\u53ef\u770b\u5230 http \u8bf7\u6c42\u5185\u5bb9\u3002

\n

https://github.com/timzaak/table2case\n\u5c06\u6570\u636e\u5e93 table \u8f6c\u6362\u6210 case class \uff0c\u5e76\u5199\u5165\u5230\u6587\u4ef6\u4e2d\uff0c\u989d\u5916\u652f\u6301 scalasql \uff0c\u51cf\u5c11\u91cd\u590d\u5de5\u4f5c\u3002

\n" }, { "author": { "url": "https://www.v2ex.com/member/eccstartup", "name": "eccstartup", "avatar": "https://cdn.v2ex.com/avatar/5d76/7a83/66546_large.png?m=1486289910" }, "url": "https://www.v2ex.com/t/910451", "title": "sbt run \u7684\u65f6\u5019\uff0c\u80fd\u4e0d\u80fd\u8df3\u8fc7 compile \u76f4\u63a5 run\uff1f", "id": "https://www.v2ex.com/t/910451", "date_published": "2023-01-24T07:32:59+00:00", "content_html": "

\u5c31\u662f\u89c9\u5f97\u6bcf\u6b21 run \u7684\u65f6\u5019\u8981 compile \u4e00\u6b21\uff0c\u7b49\u7684\u65f6\u95f4\u534a\u5206\u949f\u6709\u70b9\u957f\u3002

\n

\u7f51\u4e0a\u4e0b\u8f7d\u7684\u4ed3\u5e93\uff0c\u6211\u7684\u6587\u4ef6\u51e0\u4e4e\u4e0d\u4f1a\u6539\u52a8\uff0c\u80fd\u4e0d\u80fd\u8df3\u8fc7 compile \uff1f

\n

\u719f\u6089\u7684\u5927\u4f6c\u8bf7\u6307\u70b9\u4e00\u4e0b\uff0c\u65e0\u8bba\u662f\u80fd\u4e0e\u4e0d\u80fd\u3002

\n

PS\uff1a\u6587\u4ef6\u5728\u8fd9

\n" }, { "author": { "url": "https://www.v2ex.com/member/leiuu", "name": "leiuu", "avatar": "https://cdn.v2ex.com/gravatar/117e03f151006cb9f7751d48322e3311?s=73&d=retro" }, "url": "https://www.v2ex.com/t/844067", "date_modified": "2022-03-31T16:11:31+00:00", "content_html": "

RT.

\n

\u5f88\u591a\u56e2\u961f\u5185\u5199\u6570\u636e\u6d41\uff0c\u5206\u4e3a\u7528 java \u3001scala \u3001python \u4e09\u6ce2\u3002

\n

\u9274\u4e8e\u76ee\u524d scala \u4e0d\u6e29\u4e0d\u706b\uff0c\u751a\u81f3\u70ed\u5ea6\u6709\u4e0b\u964d\u7684\u8d8b\u52bf\u3002

\n

\u662f\u5426\u6709\u5fc5\u8981\u5728\u516c\u53f8\u5185\u90e8\u9f13\u52b1\u7528 scala \uff1f

\n

\u662f\u5426\u6709\u5fc5\u8981\u7edf\u4e00\u4f7f\u7528 java \u5f00\u53d1\uff0c\u51cf\u5c11\u5f00\u53d1\u8bed\u8a00\u7684\u6280\u672f\u6808\u7684\u590d\u6742\u5ea6\uff08 scala \u8f83\u590d\u6742\u4e14\u5e94\u7528\u4e0d\u5e7f\u6cdb\uff09\uff1f

\n

\u56f0\u6270\u4e86\u633a\u957f\u4e00\u6bb5\u65f6\u95f4\u7684\u95ee\u9898\uff0c\u53d1\u51fa\u6765\u4f9b\u5927\u5bb6\u8ba8\u8bba\u4e00\u4e0b\u3002

\n

\"scala

\n", "date_published": "2022-03-31T04:05:41+00:00", "title": "\u8fd8\u6709\u5fc5\u8981\u7528 scala \u5417", "id": "https://www.v2ex.com/t/844067" }, { "author": { "url": "https://www.v2ex.com/member/exceldream", "name": "exceldream", "avatar": "https://cdn.v2ex.com/gravatar/8e718b4ba1f98e68cd4cb55b4050446e?s=73&d=retro" }, "url": "https://www.v2ex.com/t/836811", "date_modified": "2022-02-28T10:23:52+00:00", "content_html": "\u81ea\u4ece\u63a5\u89e6 scala \u5c31\u4e0d\u60f3\u5377 java \u4e86\u3002\u56fd\u5185\u6709\u8fd9\u6837\u7684\u5de5\u4f5c\u673a\u4f1a\u5417\uff1f\u8fd8\u6709\u5c31\u662f\u56fd\u5185\u6709\u5565 scala \u7684\u793e\u533a\u4e5f\u63a8\u8350\u63a8\u8350\u3002", "date_published": "2022-02-28T01:31:56+00:00", "title": "\u6709 scala \u5144\u5f1f\u5417\uff1f\u6709\u62db scala \u7684\u516c\u53f8\u5417\uff1f", "id": "https://www.v2ex.com/t/836811" }, { "author": { "url": "https://www.v2ex.com/member/xianzhe", "name": "xianzhe", "avatar": "https://cdn.v2ex.com/avatar/6883/3c39/433692_large.png?m=1684926609" }, "url": "https://www.v2ex.com/t/815973", "date_modified": "2021-11-17T02:59:30+00:00", "content_html": "

\u6700\u8fd1\u63a5\u624b\u4e00\u4e2a\u9879\u76ee\u8981\u6c42\u8865\u4e0a\u5355\u5143\u6d4b\u8bd5\uff0c\u8fd9\u4e2a\u9879\u76ee\u662f\u505a spark \u7684\uff0c\u5c31\u662f Scala \u5199\u7684 ETL \u7a0b\u5e8f\u3002\u8bf7\u95ee\u9488\u5bf9\u8fd9\u79cd\u9879\u76ee\u7528\u4ec0\u4e48\u6d4b\u8bd5\u6846\u67b6\u505a\u6bd4\u8f83\u597d\uff1f

\n", "date_published": "2021-11-17T02:58:27+00:00", "title": "Scala \u5355\u5143\u6d4b\u8bd5", "id": "https://www.v2ex.com/t/815973" }, { "author": { "url": "https://www.v2ex.com/member/asensio", "name": "asensio", "avatar": "https://cdn.v2ex.com/avatar/f413/558b/253904_large.png?m=1702800353" }, "url": "https://www.v2ex.com/t/748401", "date_modified": "2021-01-26T03:59:11+00:00", "content_html": "

spark ml \u5bfc\u51fa\u6a21\u578b pmml \u6587\u4ef6\u4e0d\u6210\u529f\uff0c\u4e0b\u9762\u662f scala \u4ee3\u7801

\n
        val pmml = new PMMLBuilder(trainingData.schema, model).build()\n        val targetFile = \"target/model.pmml\"\n        val fis: FileOutputStream = new FileOutputStream(targetFile)\n        val fout: StreamResult = new StreamResult(fis)\n        JAXBUtil.marshalPMML(pmml, fout)\n
\n
Exception in thread \"main\" java.lang.IllegalArgumentException: Expected string, integral, double or boolean data type, got vector data type\n\tat org.jpmml.sparkml.SparkMLEncoder.createDataField(SparkMLEncoder.java:169)\n\tat org.jpmml.sparkml.SparkMLEncoder.getFeatures(SparkMLEncoder.java:76)\n\tat org.jpmml.sparkml.feature.VectorIndexerModelConverter.encodeFeatures(VectorIndexerModelConverter.java:52)\n\tat org.jpmml.sparkml.FeatureConverter.registerFeatures(FeatureConverter.java:50)\n\tat org.jpmml.sparkml.PMMLBuilder.build(PMMLBuilder.java:114)\n
\n", "date_published": "2021-01-26T02:35:26+00:00", "title": "scala \u6a21\u578b\u5bfc\u51fa\u95ee\u9898", "id": "https://www.v2ex.com/t/748401" }, { "author": { "url": "https://www.v2ex.com/member/sakura1", "name": "sakura1", "avatar": "https://cdn.v2ex.com/gravatar/f1488fd2f3ecdba01ed60b7507cb9d1a?s=73&d=retro" }, "url": "https://www.v2ex.com/t/698252", "title": "\u60f3\u7528 Springboot \u505a\u540e\u7aef\u63a5\u53e3\uff0c\u4f46\u7ec4\u91cc scala \u5927\u4f6c\u5e0c\u671b\u6211\u7528 Akka Http \u600e\u4e48\u529e", "id": "https://www.v2ex.com/t/698252", "date_published": "2020-08-14T06:36:36+00:00", "content_html": "

\u5982\u9898\uff0c\u5728\u5927\u6570\u636e\u67b6\u6784\u7ec4\u5de5\u4f5c\uff0c\u7ec4\u91cc\u7684\u8bed\u8a00\u662f scala\uff0c\u4f1a\u7528 scala \u5199\u4e00\u4e9b\u5de5\u4f5c\u548c\u6846\u67b6\uff0c\u5e76\u4e14\u5199\u4e00\u4e9b flink\uff0cspark \u7a0b\u5e8f\u3002

\n

\u4e2a\u4eba\u7684\u786e\u5f88\u559c\u6b22 scala\uff0c\u4f46\u5b83\u7684\u590d\u6742\u4e5f\u8ba9\u4eba\u671b\u800c\u5374\u6b65\uff0c\u5e73\u65f6\u5199 flink \u548c spark \u90fd\u4f1a\u7528 scala \u5199\u3002

\n

\u4f46\u662f\u4e2a\u4eba\u4e0d\u559c\u6b22\u592a\u591a\u7684\u8bed\u6cd5\u7cd6\u548c\u7279\u6b8a\u7b26\u53f7\uff0c\u800c\u4e14 akka \u7684\u6d88\u606f\u7f16\u7a0b\u6a21\u578b\u611f\u89c9\u4e5f\u4e0d\u5bb9\u6613\u8fdb\u884c\u62bd\u8c61\u3002

\n

\u4ece\u4e2a\u4eba\u804c\u4e1a\u53d1\u5c55\u89d2\u5ea6\u770b\u4e5f\u60f3\u7528 springboot,\u6bd5\u7adf springboot \u8fd8\u662f\u53d7\u4f17\u6bd4\u8f83\u5e7f\u3002

\n

\u600e\u4e48\u641e\uff1f

\n" }, { "author": { "url": "https://www.v2ex.com/member/tzhhahaha", "name": "tzhhahaha", "avatar": "https://cdn.v2ex.com/gravatar/bc94df6d767c3228653009dc24892bac?s=73&d=retro" }, "url": "https://www.v2ex.com/t/682251", "title": "\u53ef\u80fd\u662f\u5bb6\u5ead\u80cc\u666f\u6700\u6df1\u539a\u7684\u7a0b\u5e8f\u5458\u5199\u7684\u4e66...", "id": "https://www.v2ex.com/t/682251", "date_published": "2020-06-17T02:33:59+00:00", "content_html": "

\u6700\u8fd1 scala \u5927\u795e\u674e\u6d69\u6bc5\u51fa\u4e86\u672c\u4e66 \u300a hands on scala \u300b. \u7c97\u7565\u770b\u4e86 free chapters , \u611f\u89c9\u5199\u7684\u8fd8\u53ef\u4ee5, \u4f46\u662f\u540e\u9762\u5f88\u591a\u5b9e\u7528\u7ae0\u8282\u662f\u6536\u8d39\u7684, \u6709\u4e70\u4e86\u8fd9\u672c\u4e66\u7684\u5417? \u5199\u7684\u548b\u6837?

\n

\u94fe\u63a5\u5982\u4e0b\nhttps://www.handsonscala.com/

\n" }, { "author": { "url": "https://www.v2ex.com/member/muziling", "name": "muziling", "avatar": "https://cdn.v2ex.com/gravatar/8509ed5054cef8bc3fafd7dd6e9a8947?s=73&d=retro" }, "url": "https://www.v2ex.com/t/674090", "date_modified": "2020-05-21T09:25:58+00:00", "content_html": "
object test {\n  def main(args: Array[String]): Unit = {\n    def listTestD = (0 to 20000000).toList\n    var l1 = System.currentTimeMillis()\n    var sum = 0\n    listTestD.foreach{x=> if (x%2==0) sum = x}\n    println(System.currentTimeMillis()-l1)\n    sum = 0\n    l1 = System.currentTimeMillis()\n    listTestD.filter(_%2==0).foreach(sum = _)\n    println(System.currentTimeMillis()-l1)\n  }\n}\n
\n

\u6267\u884c\u7ed3\u679c\u662f\uff1a\n17585,\n21059\n\u6548\u7387\u5dee 20%\u5de6\u53f3

\n

\u907f\u514d\u7f13\u5b58\uff0c\u5bf9\u6389\u4e24\u4e2a foreach

\n
object test {\n  def main(args: Array[String]): Unit = {\n    def listTestD = (0 to 20000000).toList\n    var l1 = System.currentTimeMillis()\n    var sum = 0\n    listTestD.filter(_%2==0).foreach(sum = _)\n    println(System.currentTimeMillis()-l1)\n    sum = 0\n    l1 = System.currentTimeMillis()\n    listTestD.foreach{x=> if (x%2==0) sum = x}\n    println(System.currentTimeMillis()-l1)\n  }\n}\n
\n

\u6267\u884c\u7ed3\u679c\u662f\uff1a\n35082,\n16201\n\u6548\u7387\u5dee\u8fd1 50%\u3002

\n

\u5982\u679c listTestD \u5b58\u50a8\u4e00\u4e2a\u5bf9\u8c61\u7684\u5185\u5bb9\uff0c\u6548\u7387\u662f\u4e0d\u662f\u4f1a\u5dee\u66f4\u5927\uff1f

\n", "date_published": "2020-05-21T09:24:45+00:00", "title": "\u96c6\u5408\u7c7b\u578b filter \u540e\u6267\u884c foreach \u7684\u6548\u7387 \u6bd4 foreach \u91cc\u5199 if \u6765\u7684\u6162", "id": "https://www.v2ex.com/t/674090" }, { "author": { "url": "https://www.v2ex.com/member/jakevin", "name": "jakevin", "avatar": "https://cdn.v2ex.com/gravatar/eee05b6655f6f79309961683b9bcf842?s=73&d=retro" }, "url": "https://www.v2ex.com/t/600133", "title": "sbt \u4e3a\u4ec0\u4e48\u80fd\u8fd9\u4e48\u5783\u573e\uff1f", "id": "https://www.v2ex.com/t/600133", "date_published": "2019-09-11T10:10:53+00:00", "content_html": "

\u7f51\u4e0a\u80fd\u8bd5\u7684\u89e3\u51b3\u65b9\u6848\u5168\u8bd5\u8fc7\u4e86\uff0c\u8fd8\u662f\u62c9\u4e0d\u52a8\u4f9d\u8d56

\n" }, { "author": { "url": "https://www.v2ex.com/member/SabaPing", "name": "SabaPing", "avatar": "https://cdn.v2ex.com/avatar/6fb0/5b14/77018_large.png?m=1548851987" }, "url": "https://www.v2ex.com/t/598065", "title": "sbt 1.3.0 released, \u4f9d\u8d56\u7ba1\u7406\u4ece ivy \u53d8\u4e3a Coursier", "id": "https://www.v2ex.com/t/598065", "date_published": "2019-09-05T00:25:27+00:00", "content_html": "

##\u4e3b\u8981\u66f4\u65b0\u4e3a:

\n\n
\n

\"Combined together we hope these features will improve the user experience of running your builds.\"

\n
\n

\u8be6\u7ec6 release note

\n" }, { "author": { "url": "https://www.v2ex.com/member/sl19981007", "name": "sl19981007", "avatar": "https://cdn.v2ex.com/gravatar/590e675d1e7893aa886e1a8c62076636?s=73&d=retro" }, "url": "https://www.v2ex.com/t/593903", "title": "\u5982\u4f55\u505c\u6b62\u5df2\u7ecf\u63d0\u4ea4\u5230 Spark \u96c6\u7fa4\u4e0a\u7684\u4efb\u52a1\uff1f", "id": "https://www.v2ex.com/t/593903", "date_published": "2019-08-21T08:29:55+00:00", "content_html": "" }, { "author": { "url": "https://www.v2ex.com/member/sadhen", "name": "sadhen", "avatar": "https://cdn.v2ex.com/gravatar/3d6f03810b4c31313e99eab72f787b3f?s=73&d=retro" }, "url": "https://www.v2ex.com/t/583938", "title": "Scala \u5143\u7f16\u7a0b\uff1a\u5728\u65e5\u5fd7\u5e93\u4e2d\u7684\u5e94\u7528", "id": "https://www.v2ex.com/t/583938", "date_published": "2019-07-17T14:29:50+00:00", "content_html": "

Scala \u4e2d\u5e38\u7528\u7684\u7b2c\u4e09\u65b9\u65e5\u5fd7\u5e93\uff0c\u6211\u8fd9\u8fb9\u4e86\u89e3\u7684\u6709 log4s^1\u548c Scala\nLogging^2\u4e24\u4e2a\u3002

\n

\u5728 Scala Logging \u4e2d\uff1a

\n
logger.debug(s\"Some $expensive message!\")\n
\n

\u4f1a\u88ab Scala \u7684\u5b8f\u8f6c\u6362\u6210\uff1a

\n
if (logger.isDebugEnabled) logger.debug(s\"Some $expensive message!\")\n
\n

\u56e0\u4e3a\u5728\u5b9e\u9645\u4ee3\u7801\u8fd0\u884c\u65f6\uff0c\u5b9e\u9645\u4e0a\u4f1a\u5148\u505a\u5b57\u7b26\u4e32\u63d2\u503c\uff0c\u7136\u540e\u5728\u770b\u65e5\u5fd7\u7ea7\u522b\u4e3a DEBUG \u7684\u65e5\u5fd7\u662f\u5426\u9700\u8981\u8f93\u51fa\u3002\u6240\u4ee5\u6211\u4eec\u901a\u8fc7 if \u8bed\u53e5\uff0c\u9632\u6b62\u4e0d\u5fc5\u8981\u7684\u5b57\u7b26\u4e32\u64cd\u4f5c\uff0c\u8fdb\u800c\u6539\u5584\u6027\u80fd\u3002

\n

\u90a3\u4e48 Scala Logging \u662f\u5982\u4f55\u505a\u5230\u6539\u5199\u8868\u8fbe\u5f0f\u7684\u5462\uff1f

\n

\u5728\u4e0a\u4e00\u7bc7^3\u5b9e\u73b0 lombok.Data \u7684\u65f6\u5019\uff0c\u6211\u4eec\u5b9e\u9645\u4e0a\u662f\u901a\u8fc7\u6ce8\u89e3\u544a\u8bc9\u7f16\u8bd1\u5668\uff0c\u6211\u4eec\u9700\u8981\u5728\u8be5\u6ce8\u89e3\u6240\u4f5c\u7528\u7684\u7c7b\u4e0a\u9762\u751f\u6210 getter \u548c setter\u3002\u8bf4\u767d\u4e86\uff0c\u5c31\u662f\u6ce8\u89e3 @data \u8ba9\u6211\u4eec\u5b9a\u4f4d\u5177\u4f53\u7684\u7c7b\uff0c\u7136\u540e\u6211\u4eec\u518d\u63d2\u5165\u4ee3\u7801\u3002\u800c\u8fd9\u4e2a\u4f8b\u5b50\u5b9e\u9645\u4e0a\u662f\u76f4\u63a5\u5c06\u751f\u6210\u4ee3\u7801\u7684\u89c4\u5219\u548c\u5177\u4f53\u7684\u65b9\u6cd5\u8854\u63a5\u8d77\u6765\u3002

\n

\u5b8c\u6574\u7684\u5b9e\u73b0\u5982\u4e0b\u6240\u793a\uff1a

\n
final class Logger private (val underlying: org.slf4j.Logger) {\n  def debug(message: String): Unit = macro LoggerMacro.debugMessage\n}\n\nprivate object LoggerMacro {\n\n  type LoggerContext = blackbox.Context {type PrefixType = Logger}\n\n  private def deconstructInterpolatedMessage(c: LoggerContext)\n    (message: c.Expr[String]) = {\n    import c.universe._\n    message.tree match {\n      case q\"scala.StringContext.apply(..$parts).s(..$args)\" =>\n        val format = parts.iterator.map({ case Literal(Constant(str: String)) => str })\n          // Emulate standard interpolator escaping\n          .map(StringContext.treatEscapes)\n          // Escape literal slf4j format anchors if the resulting call will require a format string\n          .map(str => if (args.nonEmpty) str.replace(\"{}\", \"\\{}\") else str)\n          .mkString(\"{}\")\n\n        val formatArgs = args.map(t => c.Expr[Any](t))\n\n        (c.Expr(q\"$format\"), formatArgs)\n\n      case _ => (message, Seq.empty)\n    }\n  }\n\n  private def formatArgs(c: LoggerContext)(args: c.Expr[Any]*) = {\n    import c.universe._\n    args.map { arg =>\n      c.Expr[AnyRef](\n        if (arg.tree.tpe <:< weakTypeOf[AnyRef]) arg.tree\n        else q\"$arg.asInstanceOf[_root_.scala.AnyRef]\"\n      )\n    }\n  }\n\n  def debugMessageArgs(c: LoggerContext)\n    (message: c.Expr[String], args: c.Expr[Any]*): c.universe.Tree = {\n    import c.universe._\n    val underlying = q\"${c.prefix}.underlying\"\n    val anyRefArgs = formatArgs(c)(args: _*)\n    if (args.length == 2)\n      q\"if ($underlying.isDebugEnabled) $underlying.debug($message, _root_.scala.Array(${anyRefArgs.head}, ${anyRefArgs(1)}): _*)\"\n    else\n      q\"if ($underlying.isDebugEnabled) $underlying.debug($message, ..$anyRefArgs)\"\n  }\n  \n  def debugMessage(c: LoggerContext)\n    (message: c.Expr[String]): c.universe.Tree = {\n    val (messageFormat, args) = deconstructInterpolatedMessage(c)(message)\n    debugMessageArgs(c)(messageFormat, args: _*)\n  }\n}\n
\n

\u9996\u5148\uff0cblackbox.Context \u4e8b\u5b9e\u4e0a\u9650\u5b9a\u4e86\u8fd9\u4e2a\u5b8f\u7684\u4f5c\u7528\u57df\u2014\u5373\u5728\u7c7b Logger \u4e4b\u4e2d\u3002\u53ef\u4ee5\u89c2\u5bdf\u5230\uff0c\u5355\u4f8b LoggerMacro \u7684\u6bcf\u4e00\u4e2a\u65b9\u6cd5\u90fd\u5e26\u6709 LoggerContext \u8fd9\u4e2a\u53c2\u6570\uff0c\u6bcf\u4e00\u4e2a\u65b9\u6cd5\u7684\u5177\u4f53\u5b9e\u73b0\uff0c\u4e5f\u548c LoggerContext \u6709\u4e00\u5b9a\u7684\u5173\u7cfb\u3002

\n

debugMessage \u51fd\u6570\u9996\u5148\u5c06\u5b57\u7b26\u4e32\u63d2\u503c\u8fd9\u4e2a\u8868\u8fbe\u5f0f\u901a\u8fc7 deconstructInterpolateMessage \u89e3\u6784\u6210 messageFormat \u548c args\u3002\u4e0b\u9762\u8fd9\u6bb5\u4ee3\u7801\u53ef\u4ee5\u975e\u5e38\u660e\u786e\u7684\u89e3\u91ca\uff0c\u4ec0\u4e48\u662f messageFormat \u4ee5\u53ca\u4ec0\u4e48\u662f args\uff1a

\n
logger.info(\"Info :{}\" , user.getName())\n
\n

\u5982\u679c\u662f Scala \u7684\u5b57\u7b26\u4e32\u63d2\u503c\u7684\u8bdd\uff0c\u5c31\u662f s\"Info :${user.getName}\"\u3002

\n

\u89e3\u6784\u4e4b\u540e\uff0c\u6211\u4eec\u53ea\u9700\u8981\u901a\u8fc7 Quasiquote \u5c06\u5e26\u6709\u6761\u4ef6\u8bed\u53e5\u7684\u4ee3\u7801\u91cd\u65b0\u6784\u9020\u8d77\u6765\u5c31\u53ef\u4ee5\u4e86\u3002

\n

\u7f16\u8bd1\u671f\u548c\u8fd0\u884c\u65f6

\n

\u53e6\u5916\u4e00\u4e2a\u9700\u8981\u6ce8\u610f\u7684\u70b9\u662f\uff0c\u5728\u4f7f\u7528 @data \u7684\u65f6\u5019\uff0c\u6211\u4eec\u5b9e\u9645\u4e0a\u9700\u8981\u5728\u5de5\u7a0b\u4e2d\u5f00\u542f Paradise \u63d2\u4ef6\uff0c\u800c\u6211\u4eec\u5728\u4f7f\u7528 Scala\nLogging \u7684\u65f6\u5019\uff0c\u5b9e\u9645\u4e0a\u76f4\u63a5\u4f9d\u8d56 Scala\nLogging \u5c31\u53ef\u4ee5\u4e86\uff0c\u4e0d\u9700\u8981\u5f00\u542f Paradise \u63d2\u4ef6\u3002\u8fd9\u5c31\u6d89\u53ca\u5230\u4e00\u4e2a\u95ee\u9898\uff1a\u6211\u4eec\u5728\u4e0a\u4e00\u8282\u4e2d\u505a\u4e86\u8be6\u7ec6\u89e3\u91ca\u7684\u4ee3\u7801\uff0c\u5230\u5e95\u662f\u5728\u54ea\u4e2a\u73af\u8282\u6267\u884c\u7684\u3002

\n

\u5f88\u7b80\u5355\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5728 debugMessage \u589e\u52a0\u65e5\u5fd7\u7684\u65b9\u5f0f\uff0c\u786e\u5b9a\u8fd9\u4e2a\u7ec6\u8282\u3002

\n

\u6700\u7ec8\u53d1\u73b0\uff0c\u5b9e\u9645\u4e0a\uff0c\u6211\u4eec\u4f9d\u8d56\u4e86 Scala\nLogging\uff0c\u4f46\u662f\u9879\u76ee\u81ea\u8eab\u6ca1\u6709\u4f7f\u7528\u7f16\u8bd1\u63d2\u4ef6\uff0c\u5728\u7f16\u8bd1\u8fc7\u7a0b\u4e2d\uff0c\u7f16\u8bd1\u5668\u9047\u5230 Scala\nLogging \u4e2d\u4f1a\u751f\u6210\u4ee3\u7801\u7684\u65b9\u6cd5\u65f6\uff0c\u5b9e\u9645\u4e0a\u8fd8\u662f\u4f1a\u53bb\u5229\u7528\u7f16\u8bd1\u63d2\u4ef6\uff0c\u751f\u6210\u4ee3\u7801\u3002

\n

\u603b\u7ed3

\n

\u5b9e\u9645\u4e0a\uff0c\u8fd9\u4e00\u7bc7\u7684\u5185\u5bb9\u867d\u7136\u5728\u5b8f\u7684\u5177\u4f53\u4f7f\u7528\u63a5\u53e3\u4e0a\u548c lombok.Data \u90a3\u4e00\u7bc7\u6709\u7ec6\u8282\u4e0a\u7684\u5dee\u5f02\uff0c\u4f46\u5b9e\u9645\u4e0a\u6700\u7ec8\u751f\u6210\u4ee3\u7801\u7684\u8fd8\u662f\u5728\u4f7f\u7528 Quasiquote\uff0c\u6240\u4ee5\u5982\u4f55\u9ad8\u6548\u5730\u5728 REPL \u4e2d\u5c1d\u8bd5 Quasiquote \u81f3\u5173\u91cd\u8981\u3002Quasiquote \u662f\u4f0a\u7538\u56ed\u5143\u7f16\u7a0b\u4e2d\u6700\u67af\u71e5\u6700\u8017\u65f6\u7684\u4e00\u4e2a\u73af\u8282\uff0c\u800c\u901a\u8fc7\u4f55\u79cd\u65b9\u5f0f\u53bb\u5c06\u5e38\u89c4\u7684\u4ee3\u7801\u548c\u5b8f\u751f\u6210\u7684\u4ee3\u7801\u8854\u63a5\u8d77\u6765\uff0c\u5219\u662f\u4f0a\u7538\u56ed\u4e2d\u4e00\u6247\u9690\u79d8\u7684\u5927\u95e8\u3002

\n

\u9605\u8bfb\u539f\u6587\uff1aScala \u5143\u7f16\u7a0b\uff1a\u5728\u65e5\u5fd7\u5e93\u4e2d\u7684\u5e94\u7528

\n" }, { "author": { "url": "https://www.v2ex.com/member/zhenwang", "name": "zhenwang", "avatar": "https://cdn.v2ex.com/avatar/897e/5436/302965_large.png?m=1547131897" }, "url": "https://www.v2ex.com/t/579808", "title": "\u5173\u4e8e\u300aScala \u7f16\u7a0b\uff083rd\uff09\u300b\u4e2d\uff0c 20.6 \u62bd\u8c61\u7c7b\u578b P424 \u7684\u7591\u95ee", "id": "https://www.v2ex.com/t/579808", "date_published": "2019-07-03T15:59:28+00:00", "content_html": "

\u5728\u300a Scala \u7f16\u7a0b\uff08 3rd \uff09\u300b\u4e2d\uff0c20.6 \u62bd\u8c61\u7c7b\u578b\u8fd9\u4e00\u8282\u4e2d\uff0c\u672c\u4eba\u6709\u4e2a\u975e\u5e38\u4e0d\u89e3\u7684\u5730\u65b9\uff0c\u4e66\u4e2d\u63d0\u5230\uff1a

\n
class Food\n\nabstract class Animal {\n  def eat(food: Food)\n}\n\nclass Grass extends Food\n\nclass Cow extends Animal {\n  override def eat(food: Grass) = {}\t// \u8fd9\u4e0d\u80fd\u7f16\u8bd1\n}\t\t\t\t\t// \u5982\u679c\u80fd\u7684\u8bdd...\n\nclass Fish extends Food\n\nval bessy: Animal = new Cow\n\nbessy eat (new Fish) // ...\u4f60\u5c31\u80fd\u7ed9\u725b\u5403\u8349\u4e86\n
\n

\u672c\u4eba\u7406\u89e3 override \u8d85\u7c7b\u65b9\u6cd5\uff0c\u65b9\u6cd5\u53c2\u6570\u662f\u4e0d\u652f\u6301\u534f\u53d8\u7684\uff0c\u4f46\u662f\u4e0a\u6587\u5047\u8bbe\u901a\u8fc7\u7f16\u8bd1\uff0c\"bessy eat (new Fish)\"\u4e0d\u662f\u672c\u6765\u5c31\u4e0d\u80fd\u8fd0\u884c\u5417\uff1f Fish \u672c\u6765\u5c31\u4e0d\u80fd\u4e0a\u8f6c\u578b\u4e3a Grass \u5440\u3002\u4f55\u51b5\u5982\u4e0b\u91cd\u5199 eat \u65b9\u6cd5\u5c82\u4e0d\u662f\u540c\u6837\u6709\u8fd9\u4e2a\u95ee\u9898\uff1f

\n
class Cow extends Animal {\n  override def eat(food: Food): Unit = {}\n}\n\nval cow = new Cow\n\ncow eat new Fish\n// \u80fd\u901a\u8fc7\u7f16\u8bd1\u4e14\u8fd0\u884c\n
\n

\u5c0f\u5f1f\u4e0d\u624d\uff0c\u4e00\u76f4\u6ca1\u7406\u89e3\uff0c\u5e0c\u671b\u5404\u4f4d\u5927\u4f6c\u8f7b\u55b7

\n" }, { "author": { "url": "https://www.v2ex.com/member/KOSKERS", "name": "KOSKERS", "avatar": "https://cdn.v2ex.com/gravatar/f66bd8079b1f4bd57be19c9feeaa0bde?s=73&d=retro" }, "url": "https://www.v2ex.com/t/557814", "title": "\u8bf7\u6559\u4e0b\u5173\u4e8e\u7528 Flume+kafka+Spark \u5b9e\u73b0\u5b9e\u65f6\u76d1\u63a7\u9519\u8bef\u65e5\u5fd7\u62a5\u8b66\u7684\u529f\u80fd", "id": "https://www.v2ex.com/t/557814", "date_published": "2019-04-23T03:05:23+00:00", "content_html": "

\u5927\u5bb6\u597d\uff0c\u8bf7\u6559\u4e0b\u5173\u4e8e\u7528 Flume+kafka+Spark \u5b9e\u73b0\u5b9e\u65f6\u76d1\u63a7\u9519\u8bef\u65e5\u5fd7\u62a5\u8b66\u7684\u529f\u80fd\u3002\n\u76ee\u524d Flume \u548c Kafka \u7684\u76f8\u5173\u529f\u80fd\u5df2\u7ecf\u901a\u4e86\u3002\u4f46\u662f spark \u6ca1\u4ec0\u4e48\u4f7f\u7528\u7ecf\u9a8c\u3002\n\u770b\u7f51\u4e0a\u6559\u7a0b\u662f\u8981\u81ea\u5df1\u5199 Scala \u811a\u672c\u7136\u540e\u6253\u6210 jar \u5305\u7ed9 Spark \u6267\u884c\u3002

\n

\u6211\u60f3\u7528 spark \u5b9e\u73b0\u68c0\u6d4b kafka \u7684\u6570\u636e\u6d41\uff0c\u5982\u679c\u53d1\u73b0 error \u5b57\u6837\uff0c\u5c31\u53d1\u9001\u90ae\u4ef6\u3002\n\u8bf7\u95ee\u5404\u4f4d\u5927\u4f6c\u6709\u6ca1\u6709\u76f8\u5173\u811a\u672c\u6216\u8005\u6559\u7a0b\u7684\u5730\u5740\u53ef\u4ee5\u53c2\u8003\u7684\uff1f

\n

\u8c22\u8c22\u5927\u5bb6\u3002

\n" }, { "author": { "url": "https://www.v2ex.com/member/sadhen", "name": "sadhen", "avatar": "https://cdn.v2ex.com/gravatar/3d6f03810b4c31313e99eab72f787b3f?s=73&d=retro" }, "url": "https://www.v2ex.com/t/540173", "title": "\u95f2\u8bdd Scala Native: \u521d\u6b21\u89c1\u9762\uff0c\u8bf7\u591a\u591a\u5173\u7167", "id": "https://www.v2ex.com/t/540173", "date_published": "2019-03-01T13:57:54+00:00", "content_html": "

\u9996\u5148\u7528 scala-native \u7684 g8 \u6a21\u677f\u521b\u5efa\u4e00\u4e2a\u811a\u624b\u67b6\uff1a

\n
$ sbt new scala-native/scala-native.g8\n...\nA minimal project that uses Scala Native. \n\nname [Scala Native Seed Project]: scala-native-playground\n\nTemplate applied in /path/to/scala-native-playground\n
\n

\u53ea\u8981\u8f93\u5165\u4f60\u60f3\u521b\u5efa\u7684\u5de5\u7a0b\u7684\u540d\u5b57\uff0c\u6574\u4e2a\u811a\u624b\u67b6\u5c31\u642d\u5efa\u8d77\u6765\u4e86\u3002

\n

\u6211\u4eec\u8bd5\u7740\u7f16\u8bd1\u8fd0\u884c\u4e00\u4e0b\u8fd9\u4e2a\u811a\u624b\u67b6\uff1a

\n
$ cd scala-native-playground\n$ sbt\nsbt:scala-native-playground> compile\n[info] Non-compiled module 'compiler-bridge_2.11' for Scala 2.11.12. Compiling...\n[info]   Compilation completed in 6.179s.\n[info] Done compiling.\n[success] Total time: 177 s, completed 2019-2-24 10:24:54\nsbt:scala-native-playground> run\n[error] no clang60, clang-6.0, clang50, clang-5.0, clang40, clang-4.0, clang39, clang-3.9, clang38, clang-3.8, clang37, clang-3.7, clang found in $PATH. Install clang ( http://www.scala-native.org/en/latest/user/setup.html)\n[error] no clang++60, clang++-6.0, clang++50, clang++-5.0, clang++40, clang++-4.0, clang++39, clang++-3.9, clang++38, clang++-3.8, clang++37, clang++-3.7, clang++ found in $PATH. Install clang ( http://www.scala-native.org/en/latest/user/setup.html)\n[error] (nativeClang) no clang60, clang-6.0, clang50, clang-5.0, clang40, clang-4.0, clang39, clang-3.9, clang38, clang-3.8, clang37, clang-3.7, clang found in $PATH. Install clang ( http://www.scala-native.org/en/latest/user/setup.html)\n[error] (nativeClangPP) no clang++60, clang++-6.0, clang++50, clang++-5.0, clang++40, clang++-4.0, clang++39, clang++-3.9, clang++38, clang++-3.8, clang++37, clang++-3.7, clang++ found in $PATH. Install clang ( http://www.scala-native.org/en/latest/user/setup.html)\n[error] Total time: 0 s, completed 2019-2-24 10:26:01\n
\n

\u80fd\u6b63\u5e38\u7f16\u8bd1\uff0c\u4f46\u662f\u8fd0\u884c\u7684\u65f6\u5019\u4f1a\u62a5\u9519\u3002\u6309\u7167\u63d0\u793a\uff0c\u6211\u4eec\u9700\u8981\u5b89\u88c5\u4e00\u4e9b\u4f9d\u8d56\uff1a

\n
$ sudo apt install clang libunwind-dev\n
\n

\u7136\u540e\uff0c\u5728\u91cd\u65b0\u5728 sbt \u7684 REPL \u91cc\u9762\u6572 Run \u5c31\u53ef\u4ee5\u4e86\u3002\u5927\u6982\u662f\u8fd9\u6837\uff1a

\n
sbt:scala-native-playground> run\n[info] Linking (534 ms)\n[info] Discovered 800 classes and 4709 methods\n[info] Optimizing (debug mode) (742 ms)\n[info] Generating intermediate code (242 ms)\n[info] Produced 39 files\n[info] Compiling to native code (332 ms)\n[info] Linking native code (immix gc) (60 ms)\nHello, world!\n[success] Total time: 3 s, completed 2019-2-24 10:27:45\n
\n

\u6574\u4e2a\u8fc7\u7a0b\u8fd8\u662f\u6bd4\u8f83\u6d41\u7545\u7684\uff0c\u6ca1\u6709\u9047\u5230\u7279\u522b\u6d6a\u8d39\u65f6\u95f4\u7684\u4e8b\u60c5\uff0cby the way\uff0c\u6211\u6240\u7528\u7684 Scala Native \u7248\u672c\u662f 0.3.8\uff0c\u8fd9\u4e00\u70b9\u4eceproject/plugins.sbt\u53ef\u4ee5\u77e5\u9053\u3002

\n
$ cat project/plugins.sbt                                                                                                    \naddSbtPlugin(\"org.scala-native\" % \"sbt-scala-native\" % \"0.3.8\")\n
\n

====> \u70b9\u6211\u8fd4\u56de\u6587\u7ae0\u76ee\u5f55 <====

\n" }, { "author": { "url": "https://www.v2ex.com/member/zhutmost", "name": "zhutmost", "avatar": "https://cdn.v2ex.com/avatar/bf63/0e06/268254_large.png?m=1548154687" }, "url": "https://www.v2ex.com/t/529566", "title": "Scala \u4e2d\u4e0d\u5e26\u5177\u4f53\u5b9e\u73b0\u7684 object \u662f\u4ec0\u4e48\u7528\u6cd5", "id": "https://www.v2ex.com/t/529566", "date_published": "2019-01-22T10:55:55+00:00", "content_html": "

\u6211\u5728\u4ee3\u7801Link\u91cc\u770b\u5230

\n
import ...\n\nobject DataAssign\nobject InitAssign\n\ntrait DataPrimitives[T <: Data] {\n// ... Other codes\n
\n

\u5176\u4e2d\u4e0a\u9762\u8fd9\u4e24\u4e2a object \u8fd9\u91cc\u90fd\u6ca1\u6709\u5177\u4f53\u5b9e\u73b0\u3002\u8bf7\u95ee\u8fd9\u662f\u4ec0\u4e48\u7528\u6cd5\uff0c\u6709\u4ec0\u4e48\u53c2\u8003\u6750\u6599\u4e48\uff1f\n\u8c22\u8c22

\n" }, { "author": { "url": "https://www.v2ex.com/member/bigeast", "name": "bigeast", "avatar": "https://cdn.v2ex.com/avatar/bd6f/d205/8854_large.png?m=1511001517" }, "url": "https://www.v2ex.com/t/516332", "date_modified": "2018-12-10T23:20:35+00:00", "content_html": "\u5c31\u662f\u547d\u4ee4\u884c\u8f93\u5165 scala\uff0c\u8fdb\u5165 scala shell\uff0c\u6309 delete \u5220\u9664\u5b57\u7b26\uff0c\u5c4f\u5e55\u663e\u793a\u7a7a\u683c\uff0c\u4f46\u5b9e\u9645\u4e0a\u5b57\u7b26\u662f\u88ab\u5220\u9664\u4e86\u3002

readline \u5feb\u6377\u952e\u4e5f\u4e0d\u80fd\u7528\uff0c\u4e5f\u662f\u5728\u540e\u9762\u663e\u793a\u7a7a\u683c\u3002

\u64cd\u4f5c\u7cfb\u7edf\u662f macOS 10.14.1\uff0cscala \u662f brew install scala \u5b89\u88c5\u7684 2.12.7 \u7248\u672c\u3002\u5982\u679c\u4e00\u6b21\u6027\u8f93\u5165\u6b63\u786e\u7684\u7a0b\u5e8f\uff0c\u4e0d\u8fdb\u884c\u7f16\u8f91\uff0c\u53ef\u4ee5\u6b63\u5e38\u8fd0\u884c\u3002

\u521a\u624d\u4ece\u5b98\u7f51\u4e0a\u4e0b\u8f7d scala-2.12.8.tgz \uff0c\u4e5f\u662f\u540c\u6837\u7684\u95ee\u9898\u3002

\u7ec8\u7aef\u672c\u6765\u662f iTerm2 + zsh\uff0c\u6362\u7528\u4e86\u7cfb\u7edf\u81ea\u5e26\u7684 terminal + /bin/bash \u8fd8\u662f\u540c\u6837\u7684\u95ee\u9898\u3002\u641c\u4e86\u534a\u5929\u6ca1\u770b\u5230\u6709\u7c7b\u4f3c\u95ee\u9898\u7684\uff0c\u56f0\u6270\u597d\u51e0\u5929\u4e86\u3002

\u5f55\u4e86\u4e2a\u5c4f\uff1a https://www.bilibili.com/video/av37498682/", "date_published": "2018-12-10T23:19:57+00:00", "title": "scala \u547d\u4ee4\u884c\u5220\u9664\u5b57\u7b26\u4e0d\u80fd\u6b63\u5e38\u663e\u793a", "id": "https://www.v2ex.com/t/516332" }, { "author": { "url": "https://www.v2ex.com/member/naga1003", "name": "naga1003", "avatar": "https://cdn.v2ex.com/avatar/fd62/f7a7/364123_large.png?m=1542619718" }, "url": "https://www.v2ex.com/t/515228", "title": "spark \u6280\u672f\u9762\u8bd5\u88ab\u95ee\u5230\u4e2a\u95ee\u9898\uff0c\u6709\u70b9\u95ee\u61f5\u903c\u4e86\uff0c\u6c42\u6307\u70b9", "id": "https://www.v2ex.com/t/515228", "date_published": "2018-12-07T01:36:27+00:00", "content_html": "

\u95ee\u9898\uff1a\u4ec0\u4e48\u5e94\u7528\u573a\u666f\u4e0b group by \u6bd4 reduce by \u66f4\u597d\uff1f

\n

\u5f53\u65f6\u61f5\u903c\u4e86\uff0c\u611f\u89c9\u4e0d\u662f\u9ed8\u8ba4\u90fd\u5c3d\u91cf\u4f7f\u7528 reduce by \u5417\uff0c\u73b0\u5728\u6211\u80fd\u60f3\u5230\u7684\u60c5\u51b5\u4e5f\u53ea\u6709\u5728 key \u503c\u975e\u5e38\u5c11\u7684\u60c5\u51b5\u4e0b\u7528 group by \u6bd4\u8f83\u597d\uff0c\u4e0d\u77e5\u9053\u5bf9\u4e0d\u5bf9\u3002

\n" }, { "author": { "url": "https://www.v2ex.com/member/jiuziqie", "name": "jiuziqie", "avatar": "https://cdn.v2ex.com/gravatar/b7de6b12f1256514580a875818bb30ff?s=73&d=retro" }, "url": "https://www.v2ex.com/t/509323", "date_modified": "2018-11-19T08:53:31+00:00", "content_html": "

\u518d\u770b twitter \u7684 Scala School\uff0c\u6709\u4e00\u6bb5\u4ee3\u7801\u770b\u4e0d\u61c2\uff0c\u7279\u6765\u6c42\u6559

\n
def f(s: String) = \"f(\" + s + \")\"                              \ndef g(s: String) = \"g(\" + s + \")\"\n\n// \u5c31\u662f\u8fd9\u91cc\u770b\u4e0d\u61c2\n\nval fComposeG = f _ compose g _\n
\n

\u60f3\u95ee\u4e00\u4e0b \u8fd9\u4e2a _ \u5728\u8fd9\u91cc\u662f\u4ec0\u4e48\u4f5c\u7528\uff1f \u8fd9\u662f\u4e00\u79cd\u4ec0\u4e48\u7528\u6cd5\u5440?

\n", "date_published": "2018-11-19T08:52:54+00:00", "title": "scala \u4e2d _ \u7684\u8bed\u6cd5\u95ee\u9898", "id": "https://www.v2ex.com/t/509323" }, { "author": { "url": "https://www.v2ex.com/member/ererermao", "name": "ererermao", "avatar": "https://cdn.v2ex.com/gravatar/0a99246e6fa6d9530db7c813a1afa6ca?s=73&d=retro" }, "url": "https://www.v2ex.com/t/459794", "date_modified": "2018-06-02T04:49:05+00:00", "content_html": "

\u65e0\u610f\u95f4\u53d1\u73b0\u4e86 v2 \u8fd8\u6709 scala \u7684\u6807\u7b7e\uff0c\u53c8\u770b\u5230\u4e86https://www.v2ex.com/t/431491\u3002
\n\u6240\u4ee5\u5c31\u5ba3\u4f20\u4e00\u4e0b telegram \u7684\u7fa4\u7ec4\u3002

\n", "date_published": "2018-06-02T04:46:24+00:00", "title": "[\u5c0f\u5e7f\u544a] scala \u4e2d\u6587 telegram \u7fa4\u7ec4\uff1a t.me/scala_zh", "id": "https://www.v2ex.com/t/459794" }, { "author": { "url": "https://www.v2ex.com/member/dolph", "name": "dolph", "avatar": "https://cdn.v2ex.com/gravatar/0a8793da174c08b1fe92447fd5eb73ee?s=73&d=retro" }, "url": "https://www.v2ex.com/t/431491", "title": "Scala \u4e2d\u56fd\u793e\u533a\u3001\u5fae\u4fe1\u7fa4\uff1f", "id": "https://www.v2ex.com/t/431491", "date_published": "2018-02-21T10:41:37+00:00", "content_html": "

\u4e4b\u524d\u7ecf\u9a8c\u4e3b\u8981\u662f Haskell \uff08\u5927\u5b66\u4ece\u5927\u4e00\u5199\u5230\u6bd5\u4e1a\uff09\uff0c\u73b0\u5728\u5de5\u4f5c\u4e86\u7ecf\u5e38\u5199 Scala\uff0c\u5ea7\u6807\u6df1\u5733\uff0c\u5e0c\u671b\u627e\u5230\u5927\u672c\u8425\u4e00\u8d77\u4ea4\u6d41 /\u4ecb\u7ecd\u5de5\u4f5c

\n

zhihu: https://www.zhihu.com/people/Martinawd

\n" }, { "author": { "url": "https://www.v2ex.com/member/wqlin", "name": "wqlin", "avatar": "https://cdn.v2ex.com/avatar/769a/9342/165824_large.png?m=1700136157" }, "url": "https://www.v2ex.com/t/421155", "title": "Scala's types of types \u8bd1\u6587", "id": "https://www.v2ex.com/t/421155", "date_published": "2018-01-08T11:45:49+00:00", "content_html": "

\u770b\u5230\u4e00\u7bc7\u4e0d\u9519\u7684\u535a\u6587\uff0c\u4ecb\u7ecd Scala \u7c7b\u578b\u7cfb\u7edf\uff1aScala's types of types\u3002

\n

\u4e8e\u662f\u628a\u5b83\u7ffb\u8bd1\u6210\u4e2d\u6587\u4e86\uff0c\u8be6\u89c1 Scala \u4e2d\u4e0d\u540c\u7c7b\u578b\u7684\u7c7b\u578b\u3002\n\u4e0d\u8fc7\u6709\u51e0\u4e2a\u7ae0\u8282\u539f\u4f5c\u8005\u8fd8\u672a\u5b8c\u6210\u3002

\n

\u6b22\u8fce\u6307\u70b9\u548c\u5efa\u8bae\u3002

\n" }, { "author": { "url": "https://www.v2ex.com/member/hanwang", "name": "hanwang", "avatar": "https://cdn.v2ex.com/avatar/08a1/cf3a/41551_large.png?m=1734360719" }, "url": "https://www.v2ex.com/t/401833", "title": "Scala \u81ea\u5b66\u7b14\u8bb0-\u53c2\u8003\u4e66\u7c4d Programming in Scala \u7b2c\u4e09\u7248", "id": "https://www.v2ex.com/t/401833", "date_published": "2017-10-30T02:34:28+00:00", "content_html": "

\u6700\u8fd1\u5f00\u59cb\u5b66\u4e60 Scala\uff0c\u60f3\u501f\u6b64\u673a\u4f1a\u5f00\u59cb\u953b\u70bc\u81ea\u5df1\u5199\u65e5\u5fd7\u548c\u603b\u7ed3\u3002\n\u521a\u603b\u7ed3\u4e86\u4e09\u7ae0\uff0c\u5e0c\u671b\u80fd\u4fdd\u6301\u66f4\u65b0\u3002:)

\n

Scala \u81ea\u5b66

\n

Scala \u6982\u89c8(\u7b2c\u4e00\u7bc7)

\n

Scala \u7684\u7c7b\u4e0e\u5bf9\u8c61(\u7b2c\u4e8c\u7bc7)

\n

\u53c2\u8003\u4e66\u7c4d

\n

Programming in Scala \u7b2c\u4e09\u7248

\n" }, { "author": { "url": "https://www.v2ex.com/member/tttty", "name": "tttty", "avatar": "https://cdn.v2ex.com/avatar/8608/473e/225750_large.png?m=1492263098" }, "url": "https://www.v2ex.com/t/400979", "title": "scala \u5982\u4f55\u5b9e\u73b0\u67d0\u4e2a\u4ee3\u7801\u6bb5\u540c\u4e00\u65f6\u523b\u53ea\u80fd\u6709\u4e00\u4e2a\u8fdb\u7a0b\u5728\u8bfb\uff0c\u5176\u4ed6\u8fdb\u7a0b\u53ea\u80fd\u7b49\u5f85\u3002", "id": "https://www.v2ex.com/t/400979", "date_published": "2017-10-26T07:56:03+00:00", "content_html": "" }, { "author": { "url": "https://www.v2ex.com/member/whoam1", "name": "whoam1", "avatar": "https://cdn.v2ex.com/avatar/f8b6/0474/258108_large.png?m=1515642731" }, "url": "https://www.v2ex.com/t/395949", "title": "\u8bf7\u95ee\u8be5\u600e\u6837\u7ed3\u5408\u5b9e\u8df5\u53bb\u5b66\u4e60 Scala\uff0c\u8c22\u8c22\uff01", "id": "https://www.v2ex.com/t/395949", "date_published": "2017-10-08T07:55:45+00:00", "content_html": "

\u6700\u8fd1\u5b66\u4e60 Scala\uff0c\u5728\u770b\u300a Scala \u7f16\u7a0b\u300b(programming in scala)\uff0c\u770b\u5230\u4e86 20 \u7ae0\uff0c\u73b0\u5728\u77e5\u8bc6\u7279\u522b\u96f6\u6563\uff0c\u5b66\u5f97\u5f88\u4e0d\u8e0f\u5b9e\u3002\u4e5f\u5c1d\u8bd5\u8fc7\u5b66\u4e60 play \u6846\u67b6\uff0c\u7f51\u4e0a\u67e5\u5230\u7684\u8d44\u6599\u4e0d\u591a\uff08\u4e2d\u6587\u82f1\u6587\u611f\u89c9\u90fd\u633a\u5c11\uff09\uff0c\u53ef\u4ee5\u501f\u9274\u7684\u4f8b\u5b50\u4e5f\u5f88\u5c11\uff08\u4e3b\u8981\u662f\u5176\u4e2d\u7528\u4e86\u5f88\u591a\u5176\u5b83\u7684\u5e93\uff0c\u5bfc\u81f4\u6211\u73b0\u5728\u53bb\u5199\u7684\u8bdd\u53ea\u80fd \u201c\u590d\u5236\u7c98\u8d34\u201d \u5176\u4e2d\u7684\u4ee3\u7801\uff0c\u5f88\u591a\u539f\u7406\u4e0d\u7406\u89e3\uff09\u3002

\n

\u8bf7\u95ee\u600e\u6837\u7ed3\u5408\u9879\u76ee\u53bb\u5b9e\u8df5\u5462\uff1f\u6216\u8005\u8bf4\u54ea\u4e9b\u6846\u67b6\uff08\u6a21\u5757\uff09\u9002\u5408\u521d\u5b66\u8005\u5b66\u4e60\uff08\u9605\u8bfb\uff09\u5462\uff1f\u5e0c\u671b\u5927\u5bb6\u80fd\u8c08\u8c08\u81ea\u5df1\u7684\u60f3\u6cd5\uff0c\u8c22\u8c22\uff01

\n" }, { "author": { "url": "https://www.v2ex.com/member/joymufeng", "name": "joymufeng", "avatar": "https://cdn.v2ex.com/gravatar/c22191cd46ec17e6e2a5796a55a115b1?s=73&d=retro" }, "url": "https://www.v2ex.com/t/383113", "title": "\u6b22\u8fce\u6765\u8bbf\u5f00\u653e\u6e90\u7801\u7684 PlayScala \u793e\u533a(http://www.playscala.cn)", "id": "https://www.v2ex.com/t/383113", "date_published": "2017-08-15T07:38:16+00:00", "content_html": "

Play Framework \u4ece\u95ee\u4e16\u81f3\u4eca\u5df2\u7ecf\u5341\u4e2a\u5e74\u5934\u4e86\uff0c\u4f46\u662f\u53ef\u60dc\u7684\u662f\u8fd9\u4e48\u4f18\u79c0\u7684\u6846\u67b6\u5728\u56fd\u5185\u5374\u9c9c\u4e3a\u4eba\u77e5\u3002\u5c24\u5176\u662f\u5f53 Play Framework 2.x \u53d1\u5e03\u4ee5\u540e\uff0c\u57fa\u4e8e Scala \u8bed\u8a00\u91cd\u5199\u4e86\u6574\u4e2a\u6846\u67b6\u3002\u5f53 Scala \u548c Play Framework \u76f8\u9047\uff0c\u8fd9\u672c\u8be5\u662f\u4e00\u6bb5\u7f8e\u597d\u7684\u4f73\u8bdd\uff0c\u53ef\u7ed3\u5c40\u5374\u662f\uff0c\u9762\u5bf9 Scala \u8bed\u8a00\u66f4\u591a\u7684\u4eba\u671b\u800c\u5374\u6b65\u3002 \u8fd9\u5176\u5b9e\u90fd\u662f\u56e0\u4e3a\u4eba\u4eec\u6f5c\u610f\u8bc6\u91cc\u5bf9\u672a\u77e5\u4e8b\u7269\u5145\u6ee1\u6050\u60e7\u3002\u4f46\u5176\u5b9e Scala \u6ca1\u90a3\u4e48\u53ef\u6015\uff0c\u76f8\u53cd\u4e86\u89e3\u5b83\u4e00\u70b9\u4f60\u4f1a\u89c9\u5f97\u5b83\u5f88\u53ef\u7231\u3002\u4f8b\u5982\u5f88\u591a\u4eba\u770b\u5230 Scala \u4f7f\u7528::\u62fc\u63a5\u5143\u7d20\uff0c\u4f7f\u7528:::\u62fc\u63a5\u5217\u8868\uff0c\u4f8b\u5982\uff1a

\n
val list1 = List(\"c\", \"a\", \"l\", \"a\")\nval list2 = s :: list1 // list2: (s, c, a, l, a)\nval list3 = List(\"p\", \"l\", \"a\", \"y\")\nval list4 = list3 ::: list2 // list4: (p, l, a, y, s, c, a, l, a)\n
\n

\u7136\u540e\u5c31\u5f00\u59cb\u5410\u69fd\uff1aWTF\uff0c\u8fd9\u662f\u4ec0\u4e48\u9b3c\uff1f \u522b\u6025\uff0c\u7ed9\u6211\u4e00\u5206\u949f\u65f6\u95f4\uff0c\u770b\u770b\u80fd\u5426\u8bf4\u670d\u4f60!\n\u9996\u5148\u4f60\u9700\u8981\u4e86\u89e3\u4e00\u4e2a\u57fa\u672c\u6982\u5ff5\uff0c\u5728 Scala \u4e2d\u4e00\u5207\u90fd\u662f\u65b9\u6cd5\uff1a

\n
\"a\" * 3 //\u7b49\u4ef7\u4e8e: \"a\".*(3)\n2 - 1   //\u7b49\u4ef7\u4e8e: 2.-(1)\n
\n

\u6240\u4ee5\u6ca1\u9519\uff0c\u4f60\u4e4b\u524d\u770b\u5230\u7684::\u548c:::\u81ea\u7136\u4e5f\u662f\u65b9\u6cd5\uff0c\u53ea\u4e0d\u8fc7\u662f\u4e3a\u4e86\u7b80\u6d01\uff0c\u7701\u7565\u4e86.\u548c()\u3002List \u662f\u7531 head \u548c tail \u62fc\u63a5\u5728\u4e00\u8d77\u7684\u9012\u5f52\u7ed3\u6784(\u8fd9\u79cd\u8bbe\u8ba1\u5728\u6a21\u5f0f\u5339\u914d\u65f6\u975e\u5e38\u65b9\u4fbf)\u3002List \u7684\u5b9a\u4e49\u53ef\u4ee5\u5199\u6210\u5982\u4e0b\u5f62\u5f0f:

\n
head :: tail\n
\n

head \u662f\u9996\u5143\u7d20\uff0ctail \u662f\u5269\u4f59\u7684 List\u3002\u4ed4\u7ec6\u77a7\u77a7\uff0c::\u770b\u8d77\u6765\u662f\u4e0d\u662f\u5f88\u50cf\u80f6\u6c34\uff0c\u5c06\u5217\u8868\u7684\u5934\u548c\u5c3e\u7d27\u7d27\u5730\u7c98\u5728\u4e00\u8d77\uff0c\u66f4\u8fdb\u4e00\u6b65\uff0c:::\u53ef\u4ee5\u628a\u4e24\u4e2a\u5217\u8868\u7c98\u5728\u4e00\u8d77\u3002\u8fd9\u6837\u7684\u4ee3\u7801\u662f\u4e0d\u662f\u5f88\u7b80\u6d01\uff0c\u5e76\u4e14\u5bcc\u6709\u8868\u8fbe\u529b\uff01 \u5728 Scala \u4e2d\uff0c\u8fd9\u79cd\u7b80\u6d01\u7684\u8bbe\u8ba1\u6bd4\u6bd4\u7686\u662f\uff0c\u4f8b\u5982\u6211\u4eec\u518d\u6765\u770b\u770b\u5982\u4f55\u6784\u5efa\u4e00\u4e2a Map \u5b9e\u4f8b\uff1a

\n
val map = Map(\"name\" -> \"PlayScala \u793e\u533a\", \"url\" -> \"http://www.playscala.cn\")\n
\n

\u611f\u53d7\u4e00\u4e0b\uff0c\u662f\u4e0d\u662f\u975e\u5e38\u6e05\u6670\u660e\u4e86\u3002 \u5f53\u7136 Scala \u7684\u9b45\u529b\u8fdc\u4e0d\u6b62\u5982\u6b64\uff0c\u5f53\u4f60\u6162\u6162\u4e86\u89e3\u5b83\u65f6\uff0c\u4f60\u4f1a\u6162\u6162\u6df1\u9677\u800c\u65e0\u6cd5\u81ea\u62d4\u3002\n\u8bb2\u4e86\u90a3\u4e48\u591a\uff0c\u6211\u53ea\u60f3\u544a\u8bc9\u4f60 Scala \u5e76\u4e0d\u53ef\u6015\uff0c\u5176\u5b9e\u5728 Play Framework \u4e2d\uff0c\u4f60\u6839\u672c\u5c31\u4e0d\u9700\u8981\u62b1\u7740 Scala \u4e66\u7c4d\u5543\u5b8c\u518d\u5199\u4ee3\u7801\uff0cPlayScala \u793e\u533a\u4f1a\u4e3a\u4f60\u51c6\u5907\u4e00\u7bc7 30 \u5206\u949f\u7684\u4e3a Play \u521d\u5b66\u8005\u51c6\u5907\u7684 Scala \u57fa\u7840\u77e5\u8bc6\uff0c\u8bfb\u5b8c\u4f60\u5c31\u53ef\u4ee5\u6295\u5165 Play Framework \u7684\u6000\u62b1\u4e86\u3002

\n

\u597d\u4e86\uff0c\u56de\u5f52\u6b63\u9898\uff0c\u90a3\u4e3a\u4ec0\u4e48\u8981\u521b\u5efa PlayScala \u793e\u533a\u5462\uff1f \u4e3b\u8981\u539f\u56e0\u662f\u56fd\u5185 Play Framework \u7684\u7b2c\u4e00\u624b\u4e2d\u6587\u5b66\u4e60\u8d44\u6599\u975e\u5e38\u7a00\u7f3a\uff0c\u867d\u7136\u5728\u7f51\u4e0a\u53ef\u4ee5\u627e\u5230\u4e00\u4e9b\u6559\u7a0b\uff0c\u4f46\u662f\u77e5\u8bc6\u7684\u788e\u7247\u5316\u5f88\u4e25\u91cd\uff0c\u5e76\u4e14\u5f88\u591a\u8d28\u91cf\u8f83\u5dee\u7684\u6587\u7ae0\u4f1a\u5f71\u54cd\u521d\u5b66\u8005\u7684\u8ba4\u77e5\u3002PlayScala \u793e\u533a\u6b63\u662f\u57fa\u4e8e\u8fd9\u6837\u7684\u539f\u56e0\u800c\u8bde\u751f\u7684\uff0c\u5e76\u4e14\u5e0c\u671b\u80fd\u591f\u5b9e\u73b0\u4ee5\u4e0b\u51e0\u4e2a\u613f\u666f\uff1a

\n\n

\u5e0c\u671b\u5728\u5927\u5bb6\u7684\u4e00\u8d77\u52aa\u529b\u4e0b\uff0c\u53ef\u4ee5\u8ba9\u66f4\u591a\u7684\u4eba\u4e86\u89e3\u5e76\u52a0\u5165 Play Framework \u7684\u5f00\u53d1\u884c\u5217\uff0c\u4e0d\u65ad\u589e\u5f3a Play Framework \u5728\u56fd\u5185\u7684\u5f71\u54cd\u529b\u3002

\n
\n

\u6b22\u8fce\u6765\u8bbf\uff1a PlayScala \u793e\u533a

\n
\n" }, { "author": { "url": "https://www.v2ex.com/member/mscsky", "name": "mscsky", "avatar": "https://cdn.v2ex.com/gravatar/71df0896370109d68593a5fbe773a2d9?s=73&d=retro" }, "url": "https://www.v2ex.com/t/344448", "date_modified": "2017-03-02T13:36:14+00:00", "content_html": "

\u5982\u9898\uff0c\u4e0b\u8f7d\u4e86 2.9g \u7684\u6570\u636e\u4e0d\u719f\u6089 scala \u4e0d\u77e5\u9053\u600e\u4e48\u8bfb\u53d6\u51fa\u6765\nreadme \u5982\u4e0b

\n

\u201c\u5982\u679c\u4f7f\u7528 scala,\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b case class \u89e3\u6790\u51fa\u6570\u636e

\n
\ncase class Answer(answer_id: Long,\n\t\t\t\t  question_id: Long,\n\t\t\t\t  question_title: String, \n\t\t\t\t  question_topics: Array[Long], \n\t\t\t\t  votup_count: Long)\n\ncase class Article(id: Long, title: String, votup_count: Long)\ncase class Question(question_followers: Long, \n\t\t\t\t\tquestion_id: Long, \n\t\t\t\t\tquestion_title: String, \n\t\t\t\t\tquestion_topics: Array[Long])\n\ncase class userStringId(CREATED_ANSWERS: Array[Answer],\n                          CREATED_ARTICLES: Array[Article],\n                          CREATED_QUESTIONS: Array[Question],\n                          FOLLOWED_QUESTIONS: Array[Question],\n                          VOTEUPED_ANSWERS: Array[Answer],\n                          VOTEUPED_ARTICLES: Array[Article],\n                          followers_count: Long,\n                          id: String)\n\ncase class userDigitalId(CREATED_ANSWERS: Array[Answer],\n                           CREATED_ARTICLES: Array[Article],\n                           CREATED_QUESTIONS: Array[Question],\n                           FOLLOWED_QUESTIONS: Array[Question],\n                           VOTEUPED_ANSWERS: Array[Answer],\n                           VOTEUPED_ARTICLES: Array[Article],\n                           followers_count: Long,\n                           id: Long)\n
\n", "date_published": "2017-03-02T13:34:59+00:00", "title": "\u8bf7\u95ee\u6211\u4e0b\u8f7d\u4e86\u4e4c\u4e91\u7684 digatalAllData\uff0c\u8bf4\u660e\u4e0a\u5199\u7740\u7528 case class \u89e3\u6790\u51fa\u6570\u636e\uff0c\u90a3\u6709\u6ca1\u6709\u8be6\u7ec6\u7684\u65b9\u6cd5\uff1f", "id": "https://www.v2ex.com/t/344448" }, { "author": { "url": "https://www.v2ex.com/member/codingKingKong", "name": "codingKingKong", "avatar": "https://cdn.v2ex.com/avatar/9b17/9374/123963_large.png?m=1718892592" }, "url": "https://www.v2ex.com/t/343813", "title": "\u563f,Scala \u8fd9\u8d27\u4f60\u4eec\u90fd\u5e94\u7528\u5728\u4ec0\u4e48\u9879\u76ee\u4e0a\u4e86,\u6253\u7b97\u63a5\u89e6\u8bd5\u8bd5\u5462~", "id": "https://www.v2ex.com/t/343813", "date_published": "2017-02-28T07:13:38+00:00", "content_html": "

\u5982\u9898.\u5df2\u53d1\u73b0\u7684\u597d\u50cf\u6709 spark.

\n" }, { "author": { "url": "https://www.v2ex.com/member/tommark", "name": "tommark", "avatar": "https://cdn.v2ex.com/gravatar/27ce01b463ae25417ddda51a1502541e?s=73&d=retro" }, "url": "https://www.v2ex.com/t/333960", "title": "sbt package \u5c06 scala \u6e90\u4ee3\u7801\u4e00\u5e76\u6253\u5305\u8fdb\u53bb\uff1f", "id": "https://www.v2ex.com/t/333960", "date_published": "2017-01-11T12:39:48+00:00", "content_html": "

\u5982\u9898\uff0c\u600e\u4e48\u5c06\u6e90\u7801\u8fde\u540c\u5b57\u8282\u7801\u4e00\u5e76\u6253\u5305\u5728\u4e00\u8d77\uff0c\u8fd9\u6837\u53ef\u4ee5\u76f4\u63a5\u67e5\u770b jar \u91cc\u6bcf\u4e2a class \u7684\u6e90\u7801\uff1f

\n" }, { "author": { "url": "https://www.v2ex.com/member/twm", "name": "twm", "avatar": "https://cdn.v2ex.com/avatar/a67f/f68f/24068_large.png?m=1364200485" }, "url": "https://www.v2ex.com/t/328842", "title": "\u5927\u5bb6\u90fd\u7528\u4ec0\u4e48 orm \u6216 mysql db library", "id": "https://www.v2ex.com/t/328842", "date_published": "2016-12-20T04:37:06+00:00", "content_html": "" }, { "author": { "url": "https://www.v2ex.com/member/wqlin", "name": "wqlin", "avatar": "https://cdn.v2ex.com/avatar/769a/9342/165824_large.png?m=1700136157" }, "url": "https://www.v2ex.com/t/310640", "date_modified": "2017-02-26T08:40:45+00:00", "content_html": "\u672c\u4eba\u73b0\u5c31\u8bfb\u4e8e\u5e7f\u5dde\u67d0\u5de5, \u662f\u4e00\u540d\u5927\u4e09\u5b66\u751f, \u5bf9 Scala \u975e\u5e38\u611f\u5174\u8da3, \u76ee\u524d\u5728 Coursera \u4e0a\u81ea\u5b66\u5b8c Scala \u7cfb\u5217\u8bfe\u7a0b\u7684\u524d\u4e09\u95e8, \u7136\u540e\u60f3\u6765 V \u7ad9\u4e86\u89e3\u4e0b\u60c5\u51b5, \u56e0\u4e3a\u6ca1\u6709\u627e\u5230 Scala \u8282\u70b9, \u5c31\u60f3\u7740\u53d1\u5230 Java \u8282\u70b9\u597d\u4e86.\r
\u60f3\u95ee\u8fd9\u51e0\u4e2a\u95ee\u9898\u554a:\r
1. \u5404\u4f4d V \u53cb\u5728\u5de5\u4f5c\u6216\u8005\u5b66\u4e60\u4e2d\u542c\u8fc7\u6216\u8005\u4f7f\u7528\u8fc7 Scala \u5417? \u5982\u679c\u6709\u7684\u8bdd, \u80fd\u8bf4\u4e0b\u4f60\u4f7f\u7528\u8fd9\u8bed\u8a00\u7684\u611f\u53d7\u5417? \r
2. \u60f3\u8bf7\u95ee\u4e0b\u6709 V \u53cb\u77e5\u9053\u5e7f\u5dde\u6216\u8005\u6df1\u5733\u54ea\u91cc\u6709\u516c\u53f8\u62db Scala \u5b9e\u4e60\u6216\u8005\u6709 Scala \u6821\u62db, \u56e0\u4e3a\u81ea\u5df1\u5728\u62db\u8058\u7f51\u7ad9\u4e0a\u6ca1\u600e\u4e48\u770b\u5230\u6709\u8fd9\u65b9\u9762\u7684\u516c\u53f8\u5728\u62db\u4eba, \u4e3b\u8981\u662f\u4e0a\u6d77 \u5317\u4eac\u8fd9\u4e9b\u5730\u65b9\u624d\u6709\u4f7f\u7528 Scala \u7684\u516c\u53f8. \u5982\u679c\u77e5\u9053\u7684\u8bdd, \u80fd\u9ebb\u70e6\u544a\u77e5\u4e00\u4e0b\u5417?\r
\u8c22\u8c22\u5566~~~", "date_published": "2016-10-05T03:32:49+00:00", "title": "\u8be2\u95ee\u6709\u5173 Scala \u7684\u5b9e\u4e60, \u5de5\u4e1a\u5e94\u7528\u7b49", "id": "https://www.v2ex.com/t/310640" }, { "author": { "url": "https://www.v2ex.com/member/hujianxin", "name": "hujianxin", "avatar": "https://cdn.v2ex.com/avatar/9024/ae2d/97887_large.png?m=1555229655" }, "url": "https://www.v2ex.com/t/308835", "title": "sbt \u7684\u81ea\u5b9a\u4e49 resolvers \u88ab-Dsbt.override.build.repos=true \u8986\u76d6\u6389\u4e86", "id": "https://www.v2ex.com/t/308835", "date_published": "2016-09-25T07:30:34+00:00", "content_html": "

\u7531\u4e8e\u9879\u76ee\u7528\u5230\u4e86 HDP \u7684\u4e1c\u897f\uff0c\u6240\u4ee5\u6211\u5728 build.sbt \u91cc\u9762\u6dfb\u52a0\u4e86 resovlers \uff0c

\n
resolvers += \"Hortonworks Repository\" at \"http://repo.hortonworks.com/content/repositories/releases/\"\n\nresolvers += \"Hortonworks Jetty Maven Repository\" at \"http://repo.hortonworks.com/content/repositories/jetty-hadoop/\"\n
\n

\u4f46\u662f\uff0c\u5982\u679c\u6211\u4f7f\u7528-Dsbt.override.build.repos=true \u7684\u8bdd\uff0c\u8fd9\u4e2a resolvers \u5c31\u4f1a\u88ab\u8986\u76d6\u6389\uff0c\u6ca1\u6cd5\u4f7f\u7528\u4e86\uff0c\u6709\u4eba\u80fd\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u5417\uff1f\u611f\u8c22

\n" }, { "author": { "url": "https://www.v2ex.com/member/ideaplat", "name": "ideaplat", "avatar": "https://cdn.v2ex.com/gravatar/eb16ea1756ac152d4d606705926a596e?s=73&d=retro" }, "url": "https://www.v2ex.com/t/296998", "date_modified": "2017-02-26T08:40:55+00:00", "content_html": "", "date_published": "2016-08-04T01:32:08+00:00", "title": "\u8c01\u80fd\u8bf4\u8bf4 scala \u548c python \u7684\u533a\u522b\uff0c\u6709\u6728\u6709\u5fc5\u8981\u5b66\u4e60 scala\uff1f", "id": "https://www.v2ex.com/t/296998" }, { "author": { "url": "https://www.v2ex.com/member/hujianxin", "name": "hujianxin", "avatar": "https://cdn.v2ex.com/avatar/9024/ae2d/97887_large.png?m=1555229655" }, "url": "https://www.v2ex.com/t/295396", "title": "IDEA \u7684 sbt \u4f9d\u8d56\u89e3\u51b3\u95ee\u9898", "id": "https://www.v2ex.com/t/295396", "date_published": "2016-07-27T23:58:21+00:00", "content_html": "

\u5728 IDEA \u4e2d\uff0c build.sbt \u4e2d\uff0c\u6709\u7684\u4f9d\u8d56\u4e0b\u9762\u6709\u7ea2\u8272\u6ce2\u6d6a\u7ebf\uff0c\u663e\u793a\u6709\u4f9d\u8d56\u6ca1\u6709\u89e3\u51b3\uff0c\u4f46\u662f\u4e8b\u5b9e\u662f\u8fd9\u4e9b\u4f9d\u8d56\u5305\u5df2\u7ecf\u4e0b\u8f7d\u4e0b\u6765\u4e86\uff0c\u4e5f\u6ca1\u6709\u4f9d\u8d56\u6ca1\u89e3\u51b3\u7684\u62a5\u9519\uff0c\u5728\u7a0b\u5e8f\u4e2d\u53ef\u4ee5\u4f7f\u7528\u3002

\n

\u6709\u670b\u53cb\u9047\u5230\u8fc7\u8fd9\u4e2a\u95ee\u9898\u5417\uff1f

\n" }, { "author": { "url": "https://www.v2ex.com/member/fengkuok", "name": "fengkuok", "avatar": "https://cdn.v2ex.com/avatar/3442/f911/53910_large.png?m=1419646658" }, "url": "https://www.v2ex.com/t/276740", "date_modified": "2016-05-06T06:03:45+00:00", "content_html": "", "date_published": "2016-05-06T05:23:31+00:00", "title": "\u8bdd\u8bf4 V2 \u91cc\u6709\u641e Scala \u7684\u540c\u5b66\u5417\uff1f", "id": "https://www.v2ex.com/t/276740" }, { "author": { "url": "https://www.v2ex.com/member/pc10201", "name": "pc10201", "avatar": "https://cdn.v2ex.com/avatar/07bf/e497/41279_large.png?m=1761100385" }, "url": "https://www.v2ex.com/t/272075", "date_modified": "2016-04-18T12:56:46+00:00", "content_html": "\u738b\u57a0\u7684\u6587\u7ae0\u300a\u7ed9 Java \u8bf4\u53e5\u516c\u9053\u8bdd\u300b\r
http://www.yinwang.org/blog-cn/2016/01/18/java\r
\r
\u53e6\u5916 JB \u5bb6\u4e5f\u65b0\u51fa\u4e00\u4e2a\u8bed\u8a00\uff0c kotlin", "date_published": "2016-04-18T12:52:49+00:00", "title": "\u8fd8\u6709\u5fc5\u8981\u5b66 scala \u5417\uff1f", "id": "https://www.v2ex.com/t/272075" }, { "author": { "url": "https://www.v2ex.com/member/sadhen", "name": "sadhen", "avatar": "https://cdn.v2ex.com/gravatar/3d6f03810b4c31313e99eab72f787b3f?s=73&d=retro" }, "url": "https://www.v2ex.com/t/266847", "title": "Scala China \u7684 Telegram \u7fa4", "id": "https://www.v2ex.com/t/266847", "date_published": "2016-03-28T06:50:39+00:00", "content_html": "https://telegram.me/joinchat/CrT-5wdboBqVUghsU98uvA" }, { "author": { "url": "https://www.v2ex.com/member/zxgngl", "name": "zxgngl", "avatar": "https://cdn.v2ex.com/avatar/11e4/449a/148346_large.png?m=1458378928" }, "url": "https://www.v2ex.com/t/257643", "title": "Scala 2.12 will require Java 8.", "id": "https://www.v2ex.com/t/257643", "date_published": "2016-02-19T07:15:39+00:00", "content_html": "

http://scala-lang.org/news/2.12-roadmap/

\n" }, { "author": { "url": "https://www.v2ex.com/member/gaocegege", "name": "gaocegege", "avatar": "https://cdn.v2ex.com/avatar/fe83/e723/95688_large.png?m=1662623384" }, "url": "https://www.v2ex.com/t/254642", "title": "\u4eff\u7167 scrapy \u7684\u8bbe\u8ba1\u7528 scala \u5199\u4e86\u4e00\u4e2a\u722c\u866b\u6846\u67b6", "id": "https://www.v2ex.com/t/254642", "date_published": "2016-01-31T10:55:10+00:00", "content_html": "homepage: http://gaocegege.com/scrala \r
github: https://github.com/gaocegege/scrala \r
\r
\u5199\u7740\u73a9\u7684\uff0c\u7528\u6765\u5b66\u4e60 scala \u7684\u9020\u8f6e\u5b50\u4f5c\u54c1\uff0c\u4ee3\u7801\u5f88\u7b80\u5355\uff0c\u8bfb\u8d77\u6765\u5f88\u5feb\uff0c\u6709\u611f\u5174\u8da3\u7684\u540c\u5b66\u4e00\u8d77\u6765\u5440(\u6342\u8138" }, { "author": { "url": "https://www.v2ex.com/member/WeberXie", "name": "WeberXie", "avatar": "https://cdn.v2ex.com/gravatar/02f28512a2e978f6b6b27b824095a6f9?s=73&d=retro" }, "url": "https://www.v2ex.com/t/226182", "title": "V2EX \u91cc\u6709 scala \u7231\u597d\u8005\u5417\uff1f", "id": "https://www.v2ex.com/t/226182", "date_published": "2015-10-07T16:01:27+00:00", "content_html": "

\u56fd\u5e86\u628a scala \u7f16\u7a0b\u770b\u4e86\u5927\u534a\uff0c\u6709\u4ec0\u4e48\u7ec3\u624b\u7684\u5c0f\u9879\u76ee\u4e48\uff1f\u6709\u6ca1\u6709\u7ec4\u7ec7\u5440\uff1f

\n" }, { "author": { "url": "https://www.v2ex.com/member/chanlion", "name": "chanlion", "avatar": "https://cdn.v2ex.com/gravatar/9be8d16c041623037928ae43a865d69c?s=73&d=retro" }, "url": "https://www.v2ex.com/t/226148", "title": "\u6b64\u5904\u6709 Scala \u7231\u597d\u8005\u5417?", "id": "https://www.v2ex.com/t/226148", "date_published": "2015-10-07T13:03:30+00:00", "content_html": "

Java \u867d\u7136\u662f\u4f7f\u7528\u4eba\u6570\u6700\u591a\u7684\u8bed\u8a00, \u4f46\u662f\u5176\u5197\u4f59\u7684\u4e66\u5199\u65b9\u5f0f\u4e3a\u4eba\u6240\u8bdf\u75c5. Scala \u4e0d\u4ec5\u5b8c\u5168\u517c\u5bb9 Java \u800c\u4e14\u8fd8\u5e26\u6765\u4e86\u51fd\u6570\u5f0f\u7f16\u7a0b\u4ee5\u53ca Actor \u6a21\u578b\u5e76\u53d1\u673a\u5236. \u6211\u73b0\u5728\u5df2\u7ecf\u5bf9 Scala \u8bed\u8a00\u8822\u8822\u6b32\u52a8\u4e86, \u6562\u95ee V2EX \u6709 Scala \u7231\u597d\u8005\u5417? \u4f60\u4eec\u64b8 Scala \u611f\u89c9\u5982\u4f55? \u6709\u4ec0\u4e48\u5207\u8eab\u611f\u53d7\u7684\u597d\u5904\u6216\u574f\u5904\u5417?

\n" }, { "author": { "url": "https://www.v2ex.com/member/yhf", "name": "yhf", "avatar": "https://cdn.v2ex.com/avatar/bed4/02ff/52160_large.png?m=1427716331" }, "url": "https://www.v2ex.com/t/202332", "title": "10 Scala One Liners to Impress Your Friends", "id": "https://www.v2ex.com/t/202332", "date_published": "2015-06-30T15:26:59+00:00", "content_html": "

https://mkaz.com/2011/05/31/10-scala-one-liners-to-impress-your-friends/

\n" }, { "author": { "url": "https://www.v2ex.com/member/gaocegege", "name": "gaocegege", "avatar": "https://cdn.v2ex.com/avatar/fe83/e723/95688_large.png?m=1662623384" }, "url": "https://www.v2ex.com/t/197394", "date_modified": "2015-06-10T00:02:33+00:00", "content_html": "\u4e3e\u4e2a\u4f8b\u5b50\r
\r
https://gist.github.com/gaocegege/689f926645c820993804
\r
\r
\u8fd9\u91cc\u7684"???"\u603b\u662f\u5728ping\u548cpongexit\u524d\u5c31\u8f93\u51fa\u4e86\uff0c\u6709\u4ec0\u4e48\u529e\u6cd5\u80fd\u591f\u4f7f\u5f97\u7a0b\u5e8f\u5728\u6240\u6709\u7684Actor\u7ed3\u675f\u540e\uff0c\u518d\u6267\u884c\u4e48~", "date_published": "2015-06-10T00:00:13+00:00", "title": "\u6709\u4ec0\u4e48\u65b9\u6cd5\uff0c\u80fd\u591f\u4f7f\u5f97\u4e3b\u7a0b\u5e8f\u5728 Actor \u6267\u884c\u4e86 exit \u540e\u624d\u7ee7\u7eed\u6267\u884c\u4e48~\uff1f", "id": "https://www.v2ex.com/t/197394" }, { "author": { "url": "https://www.v2ex.com/member/wenLiangcan", "name": "wenLiangcan", "avatar": "https://cdn.v2ex.com/avatar/ad7b/25e2/19048_large.png?m=1333550482" }, "url": "https://www.v2ex.com/t/195175", "title": "\u674e\u5149\u8000\u4f3c\u4e4e\u6709\u4e2a\u80fd\u79f0\u4e3a Scala \u5927\u795e\u7684\u5b59\u5b50\uff01", "id": "https://www.v2ex.com/t/195175", "date_published": "2015-05-31T15:58:25+00:00", "content_html": "GitHub \u4e0a\u6709\u4e2a\u53eb Li Haoyi \u7684\u5927\u795e\r
\r
https://github.com/lihaoyi\r
\r
\u5199\u4e86\u597d\u591a\u70ab\u9177\u7684\u9879\u76ee\uff0c\u4ee5 Scala \u4e3a\u4e3b\uff0c\u6bd4\u5982\u8fd9\u4e9b\uff1a\r
\r
https://github.com/lihaoyi/scalatags\r
https://github.com/lihaoyi/Metascala\r
https://github.com/lihaoyi/Scalite\r
https://github.com/lihaoyi/Scalatex\r
\r
\u4e0d\u8fc7\u77e5\u9053\u4ed6\u662f\u770b\u5230\u8fd9\u4e2a Python \u7684\u9879\u76ee\uff1a\r
https://github.com/lihaoyi/macropy\r
\r
\u611f\u89c9\u50cf\u534e\u4eba\uff0c\u4e0d\u8fc7\u4e3b\u9875\u6ca1\u6709\u4efb\u4f55\u94fe\u63a5\uff0c\u627e\u4e0d\u5230\u4ed6\u6709\u535a\u5ba2\u4ec0\u4e48\u7684\u3002\r
\u521a\u521a\u65e0\u804a google \u4e86\u4e00\u4e0b who is li haoyi\uff0c\u7ed3\u679c\u51fa\u6765\u8fd9\u4e2a\u7ef4\u57fa\u9875\u9762\uff1a\r
\r
http://en.wikipedia.org/wiki/Lee_Kuan_Yew%27s_family_tree\r
\r
\u5982\u679c\u5c31\u662f\u672c\u4eba\u7684\u8bdd\u4f3c\u4e4e\u662f\u674e\u5149\u8000\u7684\u5b59\u5b50\uff0c\u674e\u663e\u9f99\u7684\u513f\u5b50\u3002\u3002\u3002" }, { "author": { "url": "https://www.v2ex.com/member/Livid", "name": "Livid", "avatar": "https://cdn.v2ex.com/avatar/c4ca/4238/1_large.png?m=1776858751" }, "url": "https://www.v2ex.com/t/184586", "title": "Scala on Android", "id": "https://www.v2ex.com/t/184586", "date_published": "2015-04-18T09:50:37+00:00", "content_html": "http://macroid.github.io/ScalaOnAndroid.html" }, { "author": { "url": "https://www.v2ex.com/member/esyed", "name": "esyed", "avatar": "https://cdn.v2ex.com/gravatar/15578d9f3dfd5581e5dec25bc4f7fb4f?s=73&d=retro" }, "url": "https://www.v2ex.com/t/168479", "date_modified": "2015-02-05T09:36:39+00:00", "content_html": "

\u6709\u65f6\u5019\u4e0d\u662f\u60f3\u5b66,\u800c\u662f\u67d0\u9879\u76ee\u662f\u7528\u67d0\u8bed\u8a00\u5199\u7684,
\n\u8981\u57fa\u4e8e\u8fd9\u4e2a\u9879\u76ee\u505a\u4e2a\u4e1c\u897f,\u4e8e\u662f\u88ab\u903c\u7740\u5b66\u4e00\u95e8\u65b0\u7684\u8bed\u8a00,\u8fd9\u8be5\u662f\u6709\u591a\u60b2\u50ac\u554a:(

\n\n

\u8fd9\u91cc\u6709\u4eba\u641e\u8fc7scala\u4e48?
\n\u8fd9\u8d27\u4e0a\u624b\u662f\u5426\u8981\u5f88\u591a?\u91cc\u9762\u662f\u4e0d\u662f\u4e5f\u6709\u5f88\u591a\u7684lib\u8981\u5b66?
\n\u989d\u7684\u795e\u554a,\u6551\u6551\u6211\u5427:(

\n", "date_published": "2015-02-05T05:34:40+00:00", "title": "scala \u503c\u5f97\u5b66\u4e60\u4e48?\u88ab\u903c\u7740\u5b66\u4e60\u8fd9\u8d27\u4e86:(", "id": "https://www.v2ex.com/t/168479" }, { "author": { "url": "https://www.v2ex.com/member/11", "name": "11", "avatar": "https://cdn.v2ex.com/avatar/9717/b5c8/33506_large.png?m=1448456025" }, "url": "https://www.v2ex.com/t/143494", "date_modified": "2014-11-02T15:32:14+00:00", "content_html": "

(A,B,C) => (A,(B,C)) \u8fd9\u4e00\u6b65\u597d\u8bf4\uff0c\u76f4\u63a5\u53d6 head tail \u5c31\u53ef\u4ee5\u4e86\u3002\u4f46\u662f\u53d6\u6bcf\u4e00\u4e2a\u5143\u7d20\u90fd\u505a\u8fd9\u4e2a\u64cd\u4f5c\u600e\u4e48\u641e\uff1f

\n", "date_published": "2014-11-02T15:32:06+00:00", "title": "Scala \u600e\u4e48\u505a\u5982\u4e0b\u53d8\u6362\uff1a(A,B,C) => (A,(B,C)) (B,(A,C)) (C,(A,B))", "id": "https://www.v2ex.com/t/143494" }, { "author": { "url": "https://www.v2ex.com/member/lichgo", "name": "lichgo", "avatar": "https://cdn.v2ex.com/avatar/ce60/ff16/3081_large.png?m=1334766522" }, "url": "https://www.v2ex.com/t/107437", "date_modified": "2014-04-06T10:26:58+00:00", "content_html": "http://www.scala-lang.org/docu/files/ScalaByExample.pdf", "date_published": "2014-04-06T10:26:47+00:00", "title": "Scala By Example\uff0cScala \u4e4b\u7236 Martin \u4eca\u5929\u521a\u66f4\u65b0/\u53d1\u5e03\u7684\u6559\u7a0b", "id": "https://www.v2ex.com/t/107437" }, { "author": { "url": "https://www.v2ex.com/member/lichgo", "name": "lichgo", "avatar": "https://cdn.v2ex.com/avatar/ce60/ff16/3081_large.png?m=1334766522" }, "url": "https://www.v2ex.com/t/107355", "title": "\u73a9 Scale \u7684\u540c\u5b66\u90fd\u5728\u505a\u4ec0\u4e48\u65b9\u5411/\u9886\u57df/\u884c\u4e1a\u7684\u5e94\u7528\uff1f", "id": "https://www.v2ex.com/t/107355", "date_published": "2014-04-05T07:42:09+00:00", "content_html": "" } ] }