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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-1159) Case style anonymous functions not supported by Scala API
Date Thu, 03 Mar 2016 14:56:18 GMT

    [ https://issues.apache.org/jira/browse/FLINK-1159?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15177907#comment-15177907
] 

ASF GitHub Bot commented on FLINK-1159:
---------------------------------------

Github user tillrohrmann commented on the pull request:

    https://github.com/apache/flink/pull/1704#issuecomment-191799798
  
    There are scalastyle violations in the code:
    
    ```
    error file=/home/travis/build/apache/flink/flink-tests/src/test/scala/org/apache/flink/api/scala/extensions/AcceptPFFilterITCase.scala
message=File must end with newline character
    error file=/home/travis/build/apache/flink/flink-tests/src/test/scala/org/apache/flink/api/scala/extensions/AcceptPFFlatMapITCase.scala
message=File must end with newline character
    error file=/home/travis/build/apache/flink/flink-tests/src/test/scala/org/apache/flink/api/scala/extensions/AcceptPFMapITCase.scala
message=File must end with newline character
    ```


> Case style anonymous functions not supported by Scala API
> ---------------------------------------------------------
>
>                 Key: FLINK-1159
>                 URL: https://issues.apache.org/jira/browse/FLINK-1159
>             Project: Flink
>          Issue Type: Bug
>          Components: Scala API
>            Reporter: Till Rohrmann
>            Assignee: Stefano Baghino
>
> In Scala it is very common to define anonymous functions of the following form
> {code}
> {
> case foo: Bar => foobar(foo)
> case _ => throw new RuntimeException()
> }
> {code}
> These case style anonymous functions are not supported yet by the Scala API. Thus, one
has to write redundant code to name the function parameter.
> What works is the following pattern, but it is not intuitive for someone coming from
Scala:
> {code}
> dataset.map{
>   _ match{
>     case foo:Bar => ...
>   }
> }
> {code}



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