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https://issues.apache.org/jira/browse/FLINK-9264?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17329533#comment-17329533
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Flink Jira Bot commented on FLINK-9264:
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This issue is assigned but has not received an update in 7 days so it has been
labeled "stale-assigned". If you are still working on the issue, please give an
update and remove the label. If you are no longer working on the issue, please
unassign so someone else may work on it. In 7 days the issue will be
automatically unassigned.
> Add method Writer[A]#contramap[B](f: B => A): Writer[B]
> -------------------------------------------------------
>
> Key: FLINK-9264
> URL: https://issues.apache.org/jira/browse/FLINK-9264
> Project: Flink
> Issue Type: Task
> Components: FileSystems
> Affects Versions: 1.5.0
> Reporter: Josh Lemer
> Assignee: vinoyang
> Priority: Minor
> Labels: stale-assigned, stale-minor
>
> Similar to https://issues.apache.org/jira/browse/FLINK-9221, it would be very
> handy to have a `Add method Writer[A]#contramap[B](f: B => A): Writer[B]`
> method, which would allow reuse of existing writers, with a "formatting"
> function placed infront of it. For example:
> val stringWriter = new StringWriter[String]()
> val intWriter: Writer[Int] = stringWriter.contraMap[Int](_.toString)
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