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https://issues.apache.org/jira/browse/JEXL-79?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12741119#action_12741119
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Sebb commented on JEXL-79:
--------------------------
I should have checked what ArrayList offers - I assumed it allowed adding
entries in an arbitrary position, but it does not.
Map does not offer a built-in ordering.
So the question is: what would be the most useful behaviour for a variable list?
And how to extend the syntax to support the new behaviours?
Needs some more thought.
> Add support for growable arrays (ArrayLists)
> --------------------------------------------
>
> Key: JEXL-79
> URL: https://issues.apache.org/jira/browse/JEXL-79
> Project: Commons JEXL
> Issue Type: New Feature
> Reporter: Sebb
> Fix For: Later
>
> Attachments: JEXL-79.patch, JEXL-79.patch, JEXL-79.patch
>
>
> JEXL now has fixed arrays. Trying to access a non-existent entry generates an
> Exception.
> Might be useful to allow for the creation and manipulation of growable
> arrays, e.g. using ArrayList.
> Writing to a non-existent entry should just create the value; reading should
> return null and empty.
> This would need a new syntax.
> Perhaps:
> list=[1,2,3,...]
> and
> emptyList=[...]
> I did wonder about using (), but that would clash with method invocation.
> Other ideas welcome!
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