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https://issues.apache.org/jira/browse/FLINK-9264?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Konstantin Knauf updated FLINK-9264:
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Issue Type: Improvement (was: Task)
As part of https://issues.apache.org/jira/browse/FLINK-22029 the "Task" Issue
Type is removed. I move this ticket to "Improvement". If you think "New
Feature", "Technical Debt" or "Bug" is more appropriate, please change the
ticket accordingly.
> 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: Improvement
> 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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