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https://issues.apache.org/jira/browse/GROOVY-11296?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Milles resolved GROOVY-11296.
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Fix Version/s: 5.0.0-alpha-6
Resolution: Fixed
https://github.com/apache/groovy/commit/b39bef39b5a22bd53769298d43a8192cbedecb63
> shuffled modifies input array
> -----------------------------
>
> Key: GROOVY-11296
> URL: https://issues.apache.org/jira/browse/GROOVY-11296
> Project: Groovy
> Issue Type: Bug
> Components: groovy-jdk
> Affects Versions: 3.0.0, 4.0.0, 5.x
> Reporter: Eric Milles
> Assignee: Eric Milles
> Priority: Major
> Fix For: 5.0.0-alpha-6
>
>
> {code:groovy}
> Integer[] array = [10, 5, 20]
> def result = array.shuffled()
> assert array !== result
> assert array.size() == result.size()
> assert array.every{ result.contains(it) }
> assert array == new Integer[] {10, 5, 20} // fails!
> {code}
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