[jira] [Comment Edited] (FLINK-1450) Add Fold operator to the Streaming api

["Gyula Fora (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-1450?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14294939#comment-14294939 ] 

Gyula Fora edited comment on FLINK-1450 at 1/28/15 9:47 AM:
------------------------------------------------------------

Yes, more specifically, the initial value is the first element of the stream/dataset


was (Author: gyfora):
Yes, more specifically, the first element is the first element of the stream/dataset

> Add Fold operator to the Streaming api
> --------------------------------------
>
>                 Key: FLINK-1450
>                 URL: https://issues.apache.org/jira/browse/FLINK-1450
>             Project: Flink
>          Issue Type: New Feature
>          Components: Streaming
>    Affects Versions: 0.9
>            Reporter: Gyula Fora
>            Priority: Minor
>              Labels: starter
>
> The streaming API currently doesn't support a fold operator.
> This operator would work as the foldLeft method in Scala. This would allow effective implementations in a lot of cases where a the simple reduce is inappropriate due to different return types.



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