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Posted to issues@flink.apache.org by "Till Rohrmann (JIRA)" <ji...@apache.org> on 2018/11/28 17:47:00 UTC
[jira] [Reopened] (FLINK-11003) Document of Java Lambda Expressions
has a mistake
[ https://issues.apache.org/jira/browse/FLINK-11003?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Till Rohrmann reopened FLINK-11003:
-----------------------------------
> Document of Java Lambda Expressions has a mistake
> -------------------------------------------------
>
> Key: FLINK-11003
> URL: https://issues.apache.org/jira/browse/FLINK-11003
> Project: Flink
> Issue Type: Bug
> Components: Documentation
> Affects Versions: 1.5.5, 1.6.2, 1.7.0
> Reporter: Yangze Guo
> Assignee: Yangze Guo
> Priority: Minor
> Labels: pull-request-available
> Fix For: 1.7.0
>
>
> Documentation of *[Java Lambda Expressions|https://ci.apache.org/projects/flink/flink-docs-master/dev/java_lambdas.html]* has a mistake which may cause confusion.
> In the last code block, it presents some way to solve type missing problem.
> In 15 line:
> public static class MyTuple2Mapper extends MapFunction<Integer, Integer> {
> @Override
> public Tuple2<Integer, Integer> map(Integer i)
> { return Tuple2.of(i, i); }
> }
> The second generic type in MapFunction should be Tuple2<Integer, Integer>
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