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https://issues.apache.org/jira/browse/WICKET-1559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12591271#action_12591271
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Johannes Schneider commented on WICKET-1559:
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Of course you are right. Therefore exists a simple rule:
Writable collection: --> *NO* wildcard
Only readable collection --> Wildcard
That's all...
> Widening Generics...
> --------------------
>
> Key: WICKET-1559
> URL: https://issues.apache.org/jira/browse/WICKET-1559
> Project: Wicket
> Issue Type: Improvement
> Affects Versions: 1.4-M1
> Reporter: Johannes Schneider
> Priority: Trivial
> Fix For: 1.4-M2
>
> Attachments: widening1.patch, widening2.patch
>
>
> A patch that widens more generic collections.
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