eric-milles opened a new pull request, #1732:
URL: https://github.com/apache/groovy/pull/1732
Adds support for assignment of optional to arrays or collections -- and by
extension an "iterator()" method and for-each iteration. Does not support
spread arguments (aka "def list = [*optional]" or "m(*optional)")
```groovy
Object[] array = optional
List<Object> list = optional
Iterator<Object> optional.iterator()
for (value in optional) { /*...*/ } // ... executed only if value is present
```
https://issues.apache.org/jira/browse/GROOVY-10223
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