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https://issues.apache.org/jira/browse/GROOVY-8411?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Milles resolved GROOVY-8411.
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Fix Version/s: 5.0.0-alpha-1
Resolution: Fixed
https://github.com/apache/groovy/commit/cafdb3c5faebceb4f70f5ec1ba55d1340f2ff936
> Support instanceof-like flow typing for class literal switch case
> -----------------------------------------------------------------
>
> Key: GROOVY-8411
> URL: https://issues.apache.org/jira/browse/GROOVY-8411
> Project: Groovy
> Issue Type: Improvement
> Reporter: Eric Milles
> Assignee: Eric Milles
> Priority: Minor
> Fix For: 5.0.0-alpha-1
>
>
> Would it be possible to extend the {{maybeFile instanceof File ?
> maybeFile.canonicalPath : maybeFile.toString()}} flow typing where
> {{maybeFile}} is seen as {{File}} in the true expression position to work for
> {{switch}}?
> This is the kind of construct I am thinking of:
> {code}
> switch (maybeFile) {
> case File:
> maybeFile.canonicalPath
> break
> default:
> maybeFile.toString()
> }
> {code}
> Currently the example fails in an {{@TypeChecked}} or {{@CompileStatic}}
> scope, there is an error for the {{canonicalPath}} reference.
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