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Posted to issues@flink.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2016/03/03 15:56:18 UTC
[jira] [Commented] (FLINK-1159) Case style anonymous functions not
supported by Scala API
[ 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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