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https://issues.apache.org/jira/browse/IO-531?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15974146#comment-15974146
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Hao Liu commented on IO-531:
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I think that you misunderstood what I had described: I said the "Second
Parameter" not the third one.
and I did know that there are some "Empty Implementations", such as
TrueFileFilter and FalseFileFilter. however, I think it's not a very elegant
solution.
as my understanding:
1, the second parameter is used for filtering files;
2, the third parameter is used for filtering directories.
When I only want to filter the subdirecotries, I just want to impement the
third parameter, I didn't want to do anything about the second paramter.
In one word: When I only want to filter the subdirecotries, I hope that I can
just set the second parameter to null and only focus on the implementation of
the third parameter. I think this would be much more easy to use for the users.
BR,
Hao Liu.
> make it more esay-to-use: org.apache.commons.io.FileUtils.listFiles(File,
> IOFileFilter, IOFileFilter)
> -----------------------------------------------------------------------------------------------------
>
> Key: IO-531
> URL: https://issues.apache.org/jira/browse/IO-531
> Project: Commons IO
> Issue Type: Improvement
> Components: Utilities
> Affects Versions: 2.5
> Reporter: Hao Liu
>
> when I only want to filter the directories, it should be better to allow me
> to set the second parameter to null or I have to implement the
> org.apache.commons.io.filefilter.IOFileFilter interface with nothing
> functionally task to do.
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