Scala偏函数使用示例

Myth丶恋晨 2023-10-03 02:23 1阅读 0赞

## 引言 ##

![在这里插入图片描述][a83c595192cd4c9d9db551da4d7a36de.png]

## 传统解决思路 ##

package com.zxl.scala
    
    object PartiakFunDemo1 {
        
      def main(args: Array[String]): Unit = {
        
        val list: List[Any] = List(1, 2, 3, 4, "abc")
        val list1: List[Any] = list.filter(_.isInstanceOf[Int])
        val list2: List[Int] = list1.map(_.asInstanceOf[Int] + 1)
        list1.foreach(println)
        println("*"*20)
        list2.foreach(println)
      }
    }

## 模式匹配解决 ##

package com.zxl.scala
    
    object PartiakFunDemo1 {
        
      def main(args: Array[String]): Unit = {
        
        //传统解决思路
        //test1
    
        //  模式匹配解决思路
        var list: List[Any] = List(1, 2, 3, 4, "abc")
        list = list.map(addOne)
        list.foreach(println)
      }
    
      def addOne(a: Any) = {
        
        a match {
        
          case x: Int => x + 1
          case _ =>
        }
      }
    
      private def test1 = {
        
        var list: List[Any] = List(1, 2, 3, 4, "abc")
        list = list.filter(_.isInstanceOf[Int])
        list.foreach(println)
        list = list.map(_.asInstanceOf[Int] + 1)
        println("*" * 20)
        list.foreach(println)
      }
    }

## 偏函数解决思路 ##

package com.zxl.scala
    
    object PartiakFunDemo1 {
        
      def main(args: Array[String]): Unit = {
        
        //传统解决思路
        //test1
    
        //  模式匹配解决思路
        var list: List[Any] = List(1, 2, 3, 4, "abc")
        //list = list.map(addOne)
        //list.foreach(println)
    
        //  偏函数解决思路
        val partialFunc: PartialFunction[Any, Int] = new PartialFunction[Any, Int] {
        
          override def isDefinedAt(x: Any): Boolean = {
        
            println("x=" + x)
            println("++++")
            x.isInstanceOf[Int]
          }
    
          override def apply(v1: Any): Int = {
        
            println("v1="+v1)
            println("----")
            v1.asInstanceOf[Int]+1
          }
        }
    
        val list1: List[Int] = list.collect(partialFunc)
        println(list1)
    
      }
    
      def addOne(a: Any) = {
        
        a match {
        
          case x: Int => x + 1
          case _ =>
        }
      }
    
      private def test1 = {
        
        var list: List[Any] = List(1, 2, 3, 4, "abc")
        list = list.filter(_.isInstanceOf[Int])
        list.foreach(println)
        list = list.map(_.asInstanceOf[Int] + 1)
        println("*" * 20)
        list.foreach(println)
      }
    }

日志输出：

D:\Develop\Java\jdk1.8.0_202\bin\java.exe "-javaagent:D:\Programs\IntelliJ IDEA 2021.1.2\lib\idea_rt.jar=53987:D:\Programs\IntelliJ IDEA 2021.1.2\bin" -Dfile.encoding=UTF-8 -classpath D:\Develop\Java\jdk1.8.0_202\jre\lib\charsets.jar;D:\Develop\Java\jdk1.8.0_202\jre\lib\deploy.jar;D:\Develop\Java\jdk1.8.0_202\jre\lib\ext\access-bridge-64.jar;D:\Develop\Java\jdk1.8.0_202\jre\lib\ext\cldrdata.jar;D:\Develop\Java\jdk1.8.0_202\jre\lib\ext\dnsns.jar;D:\Develop\Java\jdk1.8.0_202\jre\lib\ext\jaccess.jar;D:\Develop\Java\jdk1.8.0_202\jre\lib\ext\jfxrt.jar;D:\Develop\Java\jdk1.8.0_202\jre\lib\ext\localedata.jar;D:\Develop\Java\jdk1.8.0_202\jre\lib\ext\nashorn.jar;D:\Develop\Java\jdk1.8.0_202\jre\lib\ext\sunec.jar;D:\Develop\Java\jdk1.8.0_202\jre\lib\ext\sunjce_provider.jar;D:\Develop\Java\jdk1.8.0_202\jre\lib\ext\sunmscapi.jar;D:\Develop\Java\jdk1.8.0_202\jre\lib\ext\sunpkcs11.jar;D:\Develop\Java\jdk1.8.0_202\jre\lib\ext\zipfs.jar;D:\Develop\Java\jdk1.8.0_202\jre\lib\javaws.jar;D:\Develop\Java\jdk1.8.0_202\jre\lib\jce.jar;D:\Develop\Java\jdk1.8.0_202\jre\lib\jfr.jar;D:\Develop\Java\jdk1.8.0_202\jre\lib\jfxswt.jar;D:\Develop\Java\jdk1.8.0_202\jre\lib\jsse.jar;D:\Develop\Java\jdk1.8.0_202\jre\lib\management-agent.jar;D:\Develop\Java\jdk1.8.0_202\jre\lib\plugin.jar;D:\Develop\Java\jdk1.8.0_202\jre\lib\resources.jar;D:\Develop\Java\jdk1.8.0_202\jre\lib\rt.jar;E:\Workspace\Spark\SparkDemo1\target\classes;D:\Develop\scala-2.12.13\lib\scala-library.jar;D:\Develop\scala-2.12.13\lib\scala-parser-combinators_2.12-1.0.7.jar;D:\Develop\scala-2.12.13\lib\scala-reflect.jar;D:\Develop\scala-2.12.13\lib\scala-swing_2.12-2.0.3.jar;D:\Develop\scala-2.12.13\lib\scala-xml_2.12-1.0.6.jar;E:\Repository\org\apache\spark\spark-core_2.12\3.1.1\spark-core_2.12-3.1.1.jar;E:\Repository\com\thoughtworks\paranamer\paranamer\2.8\paranamer-2.8.jar;E:\Repository\org\apache\avro\avro\1.8.2\avro-1.8.2.jar;E:\Repository\org\codehaus\jackson\jackson-core-asl\1.9.13\jackson-core-asl-1.9.13.jar;E:\Repository\org\codehaus\jackson\jackson-mapper-asl\1.9.13\jackson-mapper-asl-1.9.13.jar;E:\Repository\org\apache\commons\commons-compress\1.8.1\commons-compress-1.8.1.jar;E:\Repository\org\tukaani\xz\1.5\xz-1.5.jar;E:\Repository\org\apache\avro\avro-mapred\1.8.2\avro-mapred-1.8.2-hadoop2.jar;E:\Repository\org\apache\avro\avro-ipc\1.8.2\avro-ipc-1.8.2.jar;E:\Repository\commons-codec\commons-codec\1.9\commons-codec-1.9.jar;E:\Repository\com\twitter\chill_2.12\0.9.5\chill_2.12-0.9.5.jar;E:\Repository\com\esotericsoftware\kryo-shaded\4.0.2\kryo-shaded-4.0.2.jar;E:\Repository\com\esotericsoftware\minlog\1.3.0\minlog-1.3.0.jar;E:\Repository\org\objenesis\objenesis\2.5.1\objenesis-2.5.1.jar;E:\Repository\com\twitter\chill-java\0.9.5\chill-java-0.9.5.jar;E:\Repository\org\apache\xbean\xbean-asm7-shaded\4.15\xbean-asm7-shaded-4.15.jar;E:\Repository\org\apache\hadoop\hadoop-client\3.2.0\hadoop-client-3.2.0.jar;E:\Repository\org\apache\hadoop\hadoop-common\3.2.0\hadoop-common-3.2.0.jar;E:\Repository\org\apache\httpcomponents\httpclient\4.5.2\httpclient-4.5.2.jar;E:\Repository\org\apache\httpcomponents\httpcore\4.4.4\httpcore-4.4.4.jar;E:\Repository\commons-collections\commons-collections\3.2.2\commons-collections-3.2.2.jar;E:\Repository\org\eclipse\jetty\jetty-servlet\9.3.24.v20180605\jetty-servlet-9.3.24.v20180605.jar;E:\Repository\org\eclipse\jetty\jetty-security\9.3.24.v20180605\jetty-security-9.3.24.v20180605.jar;E:\Repository\javax\servlet\jsp\jsp-api\2.1\jsp-api-2.1.jar;E:\Repository\commons-beanutils\commons-beanutils\1.9.3\commons-beanutils-1.9.3.jar;E:\Repository\org\apache\commons\commons-configuration2\2.1.1\commons-configuration2-2.1.1.jar;E:\Repository\com\google\re2j\re2j\1.1\re2j-1.1.jar;E:\Repository\com\google\code\gson\gson\2.2.4\gson-2.2.4.jar;E:\Repository\org\apache\curator\curator-client\2.12.0\curator-client-2.12.0.jar;E:\Repository\org\apache\htrace\htrace-core4\4.1.0-incubating\htrace-core4-4.1.0-incubating.jar;E:\Repository\org\apache\kerby\kerb-simplekdc\1.0.1\kerb-simplekdc-1.0.1.jar;E:\Repository\org\apache\kerby\kerb-client\1.0.1\kerb-client-1.0.1.jar;E:\Repository\org\apache\kerby\kerby-config\1.0.1\kerby-config-1.0.1.jar;E:\Repository\org\apache\kerby\kerb-core\1.0.1\kerb-core-1.0.1.jar;E:\Repository\org\apache\kerby\kerby-pkix\1.0.1\kerby-pkix-1.0.1.jar;E:\Repository\org\apache\kerby\kerby-asn1\1.0.1\kerby-asn1-1.0.1.jar;E:\Repository\org\apache\kerby\kerby-util\1.0.1\kerby-util-1.0.1.jar;E:\Repository\org\apache\kerby\kerb-common\1.0.1\kerb-common-1.0.1.jar;E:\Repository\org\apache\kerby\kerb-crypto\1.0.1\kerb-crypto-1.0.1.jar;E:\Repository\org\apache\kerby\kerb-util\1.0.1\kerb-util-1.0.1.jar;E:\Repository\org\apache\kerby\token-provider\1.0.1\token-provider-1.0.1.jar;E:\Repository\org\apache\kerby\kerb-admin\1.0.1\kerb-admin-1.0.1.jar;E:\Repository\org\apache\kerby\kerb-server\1.0.1\kerb-server-1.0.1.jar;E:\Repository\org\apache\kerby\kerb-identity\1.0.1\kerb-identity-1.0.1.jar;E:\Repository\org\apache\kerby\kerby-xdr\1.0.1\kerby-xdr-1.0.1.jar;E:\Repository\org\codehaus\woodstox\stax2-api\3.1.4\stax2-api-3.1.4.jar;E:\Repository\com\fasterxml\woodstox\woodstox-core\5.0.3\woodstox-core-5.0.3.jar;E:\Repository\dnsjava\dnsjava\2.1.7\dnsjava-2.1.7.jar;E:\Repository\org\apache\hadoop\hadoop-hdfs-client\3.2.0\hadoop-hdfs-client-3.2.0.jar;E:\Repository\com\squareup\okhttp\okhttp\2.7.5\okhttp-2.7.5.jar;E:\Repository\com\squareup\okio\okio\1.6.0\okio-1.6.0.jar;E:\Repository\org\apache\hadoop\hadoop-mapreduce-client-core\3.2.0\hadoop-mapreduce-client-core-3.2.0.jar;E:\Repository\org\apache\hadoop\hadoop-mapreduce-client-jobclient\3.2.0\hadoop-mapreduce-client-jobclient-3.2.0.jar;E:\Repository\org\apache\hadoop\hadoop-mapreduce-client-common\3.2.0\hadoop-mapreduce-client-common-3.2.0.jar;E:\Repository\org\apache\hadoop\hadoop-annotations\3.2.0\hadoop-annotations-3.2.0.jar;E:\Repository\org\apache\spark\spark-launcher_2.12\3.1.1\spark-launcher_2.12-3.1.1.jar;E:\Repository\org\apache\spark\spark-kvstore_2.12\3.1.1\spark-kvstore_2.12-3.1.1.jar;E:\Repository\org\fusesource\leveldbjni\leveldbjni-all\1.8\leveldbjni-all-1.8.jar;E:\Repository\com\fasterxml\jackson\core\jackson-core\2.10.0\jackson-core-2.10.0.jar;E:\Repository\com\fasterxml\jackson\core\jackson-annotations\2.10.0\jackson-annotations-2.10.0.jar;E:\Repository\org\apache\spark\spark-network-common_2.12\3.1.1\spark-network-common_2.12-3.1.1.jar;E:\Repository\org\apache\spark\spark-network-shuffle_2.12\3.1.1\spark-network-shuffle_2.12-3.1.1.jar;E:\Repository\org\apache\spark\spark-unsafe_2.12\3.1.1\spark-unsafe_2.12-3.1.1.jar;E:\Repository\javax\activation\activation\1.1.1\activation-1.1.1.jar;E:\Repository\org\apache\curator\curator-recipes\2.13.0\curator-recipes-2.13.0.jar;E:\Repository\org\apache\curator\curator-framework\2.13.0\curator-framework-2.13.0.jar;E:\Repository\org\apache\zookeeper\zookeeper\3.4.14\zookeeper-3.4.14.jar;E:\Repository\org\apache\yetus\audience-annotations\0.5.0\audience-annotations-0.5.0.jar;E:\Repository\jakarta\servlet\jakarta.servlet-api\4.0.3\jakarta.servlet-api-4.0.3.jar;E:\Repository\org\apache\commons\commons-lang3\3.10\commons-lang3-3.10.jar;E:\Repository\org\apache\commons\commons-math3\3.4.1\commons-math3-3.4.1.jar;E:\Repository\org\apache\commons\commons-text\1.6\commons-text-1.6.jar;E:\Repository\com\google\code\findbugs\jsr305\3.0.0\jsr305-3.0.0.jar;E:\Repository\org\slf4j\slf4j-api\1.7.30\slf4j-api-1.7.30.jar;E:\Repository\org\slf4j\jul-to-slf4j\1.7.30\jul-to-slf4j-1.7.30.jar;E:\Repository\org\slf4j\jcl-over-slf4j\1.7.30\jcl-over-slf4j-1.7.30.jar;E:\Repository\log4j\log4j\1.2.17\log4j-1.2.17.jar;E:\Repository\org\slf4j\slf4j-log4j12\1.7.30\slf4j-log4j12-1.7.30.jar;E:\Repository\com\ning\compress-lzf\1.0.3\compress-lzf-1.0.3.jar;E:\Repository\org\xerial\snappy\snappy-java\1.1.8.2\snappy-java-1.1.8.2.jar;E:\Repository\org\lz4\lz4-java\1.7.1\lz4-java-1.7.1.jar;E:\Repository\com\github\luben\zstd-jni\1.4.8-1\zstd-jni-1.4.8-1.jar;E:\Repository\org\roaringbitmap\RoaringBitmap\0.9.0\RoaringBitmap-0.9.0.jar;E:\Repository\org\roaringbitmap\shims\0.9.0\shims-0.9.0.jar;E:\Repository\commons-net\commons-net\3.1\commons-net-3.1.jar;E:\Repository\org\scala-lang\modules\scala-xml_2.12\1.2.0\scala-xml_2.12-1.2.0.jar;E:\Repository\org\scala-lang\scala-library\2.12.10\scala-library-2.12.10.jar;E:\Repository\org\scala-lang\scala-reflect\2.12.10\scala-reflect-2.12.10.jar;E:\Repository\org\json4s\json4s-jackson_2.12\3.7.0-M5\json4s-jackson_2.12-3.7.0-M5.jar;E:\Repository\org\json4s\json4s-core_2.12\3.7.0-M5\json4s-core_2.12-3.7.0-M5.jar;E:\Repository\org\json4s\json4s-ast_2.12\3.7.0-M5\json4s-ast_2.12-3.7.0-M5.jar;E:\Repository\org\json4s\json4s-scalap_2.12\3.7.0-M5\json4s-scalap_2.12-3.7.0-M5.jar;E:\Repository\org\glassfish\jersey\core\jersey-client\2.30\jersey-client-2.30.jar;E:\Repository\jakarta\ws\rs\jakarta.ws.rs-api\2.1.6\jakarta.ws.rs-api-2.1.6.jar;E:\Repository\org\glassfish\hk2\external\jakarta.inject\2.6.1\jakarta.inject-2.6.1.jar;E:\Repository\org\glassfish\jersey\core\jersey-common\2.30\jersey-common-2.30.jar;E:\Repository\jakarta\annotation\jakarta.annotation-api\1.3.5\jakarta.annotation-api-1.3.5.jar;E:\Repository\org\glassfish\hk2\osgi-resource-locator\1.0.3\osgi-resource-locator-1.0.3.jar;E:\Repository\org\glassfish\jersey\core\jersey-server\2.30\jersey-server-2.30.jar;E:\Repository\org\glassfish\jersey\media\jersey-media-jaxb\2.30\jersey-media-jaxb-2.30.jar;E:\Repository\jakarta\validation\jakarta.validation-api\2.0.2\jakarta.validation-api-2.0.2.jar;E:\Repository\org\glassfish\jersey\containers\jersey-container-servlet\2.30\jersey-container-servlet-2.30.jar;E:\Repository\org\glassfish\jersey\containers\jersey-container-servlet-core\2.30\jersey-container-servlet-core-2.30.jar;E:\Repository\org\glassfish\jersey\inject\jersey-hk2\2.30\jersey-hk2-2.30.jar;E:\Repository\org\glassfish\hk2\hk2-locator\2.6.1\hk2-locator-2.6.1.jar;E:\Repository\org\glassfish\hk2\external\aopalliance-repackaged\2.6.1\aopalliance-repackaged-2.6.1.jar;E:\Repository\org\glassfish\hk2\hk2-api\2.6.1\hk2-api-2.6.1.jar;E:\Repository\org\glassfish\hk2\hk2-utils\2.6.1\hk2-utils-2.6.1.jar;E:\Repository\org\javassist\javassist\3.25.0-GA\javassist-3.25.0-GA.jar;E:\Repository\io\netty\netty-all\4.1.51.Final\netty-all-4.1.51.Final.jar;E:\Repository\com\clearspring\analytics\stream\2.9.6\stream-2.9.6.jar;E:\Repository\io\dropwizard\metrics\metrics-core\4.1.1\metrics-core-4.1.1.jar;E:\Repository\io\dropwizard\metrics\metrics-jvm\4.1.1\metrics-jvm-4.1.1.jar;E:\Repository\io\dropwizard\metrics\metrics-json\4.1.1\metrics-json-4.1.1.jar;E:\Repository\io\dropwizard\metrics\metrics-graphite\4.1.1\metrics-graphite-4.1.1.jar;E:\Repository\io\dropwizard\metrics\metrics-jmx\4.1.1\metrics-jmx-4.1.1.jar;E:\Repository\com\fasterxml\jackson\core\jackson-databind\2.10.0\jackson-databind-2.10.0.jar;E:\Repository\com\fasterxml\jackson\module\jackson-module-scala_2.12\2.10.0\jackson-module-scala_2.12-2.10.0.jar;E:\Repository\com\fasterxml\jackson\module\jackson-module-paranamer\2.10.0\jackson-module-paranamer-2.10.0.jar;E:\Repository\org\apache\ivy\ivy\2.4.0\ivy-2.4.0.jar;E:\Repository\oro\oro\2.0.8\oro-2.0.8.jar;E:\Repository\net\razorvine\pyrolite\4.30\pyrolite-4.30.jar;E:\Repository\net\sf\py4j\py4j\0.10.9\py4j-0.10.9.jar;E:\Repository\org\apache\spark\spark-tags_2.12\3.1.1\spark-tags_2.12-3.1.1.jar;E:\Repository\org\apache\commons\commons-crypto\1.1.0\commons-crypto-1.1.0.jar;E:\Repository\org\spark-project\spark\unused\1.0.0\unused-1.0.0.jar;E:\Repository\org\apache\spark\spark-sql_2.12\3.1.1\spark-sql_2.12-3.1.1.jar;E:\Repository\com\univocity\univocity-parsers\2.9.1\univocity-parsers-2.9.1.jar;E:\Repository\org\apache\spark\spark-sketch_2.12\3.1.1\spark-sketch_2.12-3.1.1.jar;E:\Repository\org\apache\spark\spark-catalyst_2.12\3.1.1\spark-catalyst_2.12-3.1.1.jar;E:\Repository\org\scala-lang\modules\scala-parser-combinators_2.12\1.1.2\scala-parser-combinators_2.12-1.1.2.jar;E:\Repository\org\codehaus\janino\janino\3.0.16\janino-3.0.16.jar;E:\Repository\org\codehaus\janino\commons-compiler\3.0.16\commons-compiler-3.0.16.jar;E:\Repository\org\antlr\antlr4-runtime\4.8-1\antlr4-runtime-4.8-1.jar;E:\Repository\org\apache\arrow\arrow-vector\2.0.0\arrow-vector-2.0.0.jar;E:\Repository\org\apache\arrow\arrow-format\2.0.0\arrow-format-2.0.0.jar;E:\Repository\org\apache\arrow\arrow-memory-core\2.0.0\arrow-memory-core-2.0.0.jar;E:\Repository\com\google\flatbuffers\flatbuffers-java\1.9.0\flatbuffers-java-1.9.0.jar;E:\Repository\org\apache\arrow\arrow-memory-netty\2.0.0\arrow-memory-netty-2.0.0.jar;E:\Repository\org\apache\orc\orc-core\1.5.12\orc-core-1.5.12.jar;E:\Repository\org\apache\orc\orc-shims\1.5.12\orc-shims-1.5.12.jar;E:\Repository\com\google\protobuf\protobuf-java\2.5.0\protobuf-java-2.5.0.jar;E:\Repository\commons-lang\commons-lang\2.6\commons-lang-2.6.jar;E:\Repository\io\airlift\aircompressor\0.10\aircompressor-0.10.jar;E:\Repository\org\threeten\threeten-extra\1.5.0\threeten-extra-1.5.0.jar;E:\Repository\org\apache\orc\orc-mapreduce\1.5.12\orc-mapreduce-1.5.12.jar;E:\Repository\org\apache\hive\hive-storage-api\2.7.2\hive-storage-api-2.7.2.jar;E:\Repository\org\apache\parquet\parquet-column\1.10.1\parquet-column-1.10.1.jar;E:\Repository\org\apache\parquet\parquet-common\1.10.1\parquet-common-1.10.1.jar;E:\Repository\org\apache\parquet\parquet-encoding\1.10.1\parquet-encoding-1.10.1.jar;E:\Repository\org\apache\parquet\parquet-hadoop\1.10.1\parquet-hadoop-1.10.1.jar;E:\Repository\org\apache\parquet\parquet-format\2.4.0\parquet-format-2.4.0.jar;E:\Repository\org\apache\parquet\parquet-jackson\1.10.1\parquet-jackson-1.10.1.jar;E:\Repository\org\apache\spark\spark-yarn_2.12\3.1.1\spark-yarn_2.12-3.1.1.jar;E:\Repository\org\apache\hadoop\hadoop-yarn-api\3.2.0\hadoop-yarn-api-3.2.0.jar;E:\Repository\com\google\guava\guava\11.0.2\guava-11.0.2.jar;E:\Repository\javax\xml\bind\jaxb-api\2.2.11\jaxb-api-2.2.11.jar;E:\Repository\org\apache\hadoop\hadoop-yarn-common\3.2.0\hadoop-yarn-common-3.2.0.jar;E:\Repository\org\apache\hadoop\hadoop-auth\3.2.0\hadoop-auth-3.2.0.jar;E:\Repository\com\nimbusds\nimbus-jose-jwt\4.41.1\nimbus-jose-jwt-4.41.1.jar;E:\Repository\com\github\stephenc\jcip\jcip-annotations\1.0-1\jcip-annotations-1.0-1.jar;E:\Repository\net\minidev\json-smart\2.3\json-smart-2.3.jar;E:\Repository\net\minidev\accessors-smart\1.2\accessors-smart-1.2.jar;E:\Repository\org\eclipse\jetty\jetty-util\9.3.24.v20180605\jetty-util-9.3.24.v20180605.jar;E:\Repository\commons-cli\commons-cli\1.2\commons-cli-1.2.jar;E:\Repository\com\google\inject\extensions\guice-servlet\4.0\guice-servlet-4.0.jar;E:\Repository\commons-io\commons-io\2.5\commons-io-2.5.jar;E:\Repository\com\google\inject\guice\4.0\guice-4.0.jar;E:\Repository\javax\inject\javax.inject\1\javax.inject-1.jar;E:\Repository\aopalliance\aopalliance\1.0\aopalliance-1.0.jar;E:\Repository\com\fasterxml\jackson\module\jackson-module-jaxb-annotations\2.9.5\jackson-module-jaxb-annotations-2.9.5.jar;E:\Repository\com\fasterxml\jackson\jaxrs\jackson-jaxrs-json-provider\2.9.5\jackson-jaxrs-json-provider-2.9.5.jar;E:\Repository\com\fasterxml\jackson\jaxrs\jackson-jaxrs-base\2.9.5\jackson-jaxrs-base-2.9.5.jar;E:\Repository\org\apache\hadoop\hadoop-yarn-server-web-proxy\3.2.0\hadoop-yarn-server-web-proxy-3.2.0.jar;E:\Repository\org\apache\hadoop\hadoop-yarn-server-common\3.2.0\hadoop-yarn-server-common-3.2.0.jar;E:\Repository\org\apache\hadoop\hadoop-yarn-registry\3.2.0\hadoop-yarn-registry-3.2.0.jar;E:\Repository\commons-daemon\commons-daemon\1.0.13\commons-daemon-1.0.13.jar;E:\Repository\org\apache\geronimo\specs\geronimo-jcache_1.0_spec\1.0-alpha-1\geronimo-jcache_1.0_spec-1.0-alpha-1.jar;E:\Repository\org\ehcache\ehcache\3.3.1\ehcache-3.3.1.jar;E:\Repository\org\eclipse\jetty\jetty-server\9.3.24.v20180605\jetty-server-9.3.24.v20180605.jar;E:\Repository\org\eclipse\jetty\jetty-http\9.3.24.v20180605\jetty-http-9.3.24.v20180605.jar;E:\Repository\org\eclipse\jetty\jetty-io\9.3.24.v20180605\jetty-io-9.3.24.v20180605.jar;E:\Repository\org\apache\hadoop\hadoop-yarn-client\3.2.0\hadoop-yarn-client-3.2.0.jar com.zxl.scala.PartiakFunDemo1
    x=1
    ++++
    v1=1
    ----
    x=2
    ++++
    v1=2
    ----
    x=3
    ++++
    v1=3
    ----
    x=4
    ++++
    v1=4
    ----
    x=abc
    ++++
    List(2, 3, 4, 5)
    
    Process finished with exit code 0

[a83c595192cd4c9d9db551da4d7a36de.png]: https://img-blog.csdnimg.cn/a83c595192cd4c9d9db551da4d7a36de.png