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https://issues.apache.org/jira/browse/GROOVY-4875?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15636121#comment-15636121
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Paul King commented on GROOVY-4875:
-----------------------------------
Groovy already partially does safe index operations, e.g.:
{code}
def list = ['x']
assert list[1] == null
{code}
What would be really useful is checking whether the collection.array was null,
e.g.:
{code}
def list = null
assert list?[0] == null // NYI but would be equiv to: assert list?.getAt(0) ==
null
{code}
> Add a safe index operator
> -------------------------
>
> Key: GROOVY-4875
> URL: https://issues.apache.org/jira/browse/GROOVY-4875
> Project: Groovy
> Issue Type: Improvement
> Components: syntax
> Reporter: Uri Moszkowicz
> Priority: Minor
>
> It would be nice if there were a safe navigation operator for subscripts.
> Safe navigation operator:
> a?.b
> Safe index operator:
> a.size() > 0 ? a[0] : null => a?[0]
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