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https://issues.apache.org/jira/browse/GROOVY-8476?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Paul King closed GROOVY-8476.
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    Resolution: Duplicate
      Assignee: Paul King

I believe this is a duplicate

> Static type checking doesn't inference argument's type when it's explicitly 
> declared
> ------------------------------------------------------------------------------------
>
>                 Key: GROOVY-8476
>                 URL: https://issues.apache.org/jira/browse/GROOVY-8476
>             Project: Groovy
>          Issue Type: Bug
>          Components: Static compilation
>    Affects Versions: 2.4.3, 2.4.13
>         Environment: Linux workstation 4.14.17-1-lts
> Java HotSpot(TM) 64-Bit Server VM (build 25.151-b12, mixed mode)
> Groovy compiler version 2.4.13
>            Reporter: Mezentsev Denis Ivanovich
>            Assignee: Paul King
>            Priority: Major
>         Attachments: ArgumentTypeCheck.groovy
>
>
> I can't compile closure without argument's type declaration with or without 
> indy flag:
> {code:java}
> @groovy.transform.CompileStatic
> class ArgumentTypeCheck {
>     void implicitArgument() { [foo: 1].entrySet().stream().map({ it.value }) }
>     void explicitArgument() { [foo: 1].entrySet().stream().map({ it -> 
> it.value }) }
> }
> {code}
> implicitArguments is compiled, but often I want to use outer `it` in second 
> level closure, for instance in flatMap and don't want declare argument type.
> Why is implicitArgument method compiled successfully?



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