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https://issues.apache.org/jira/browse/GROOVY-6324?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17757489#comment-17757489
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Jochen Theodorou commented on GROOVY-6324:
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[~emilles] For a local variable we add information if we assign a closure to
it. Then we can use that information to determine if the call using that
variable is valid or not. But here it is a field, maybe even a precompiled
class in Java. There is no assignment we can trace. Where to get the meta
information we require? I think for this to compile a annotation like we use it
for DGM would be required. Not sure if the same annotation could be used or
should be used.
> Cannot call closure like a method in type checked mode
> ------------------------------------------------------
>
> Key: GROOVY-6324
> URL: https://issues.apache.org/jira/browse/GROOVY-6324
> Project: Groovy
> Issue Type: Bug
> Components: Static Type Checker
> Affects Versions: 2.2.0-beta-1, 2.3.0, 2.4.0-rc-1
> Reporter: Peter Niederwieser
> Priority: Major
>
> {{Closure closure = ...; closure()}} doesn't work in type-checked mode.
> Instead, one has to use {{closure.call()}}.
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