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https://issues.apache.org/jira/browse/LUCENE-2195?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12797686#action_12797686
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Robert Muir commented on LUCENE-2195:
-------------------------------------
Simon I like it. this is useful for things like empty stopword sets, so we do
not hash every input token unnecessarily.
> Speedup CharArraySet if set is empty
> ------------------------------------
>
> Key: LUCENE-2195
> URL: https://issues.apache.org/jira/browse/LUCENE-2195
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Analysis
> Reporter: Simon Willnauer
> Fix For: 3.1
>
> Attachments: LUCENE-2195.patch, LUCENE-2195.patch
>
>
> CharArraySet#contains(...) always creates a HashCode of the String, Char[] or
> CharSequence even if the set is empty.
> contains should return false if set it empty
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