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https://issues.apache.org/jira/browse/IO-291?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13144693#comment-13144693
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Gary D. Gregory commented on IO-291:
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For these kinds of methods I prefer, "contains(parent, child)" where the first
argument is the receiver of the verb and the following arguments are the actual
arguments. Which would translate to "parent.contains(child)". The is like the
Collection.contains method.
The next issue is whether "contains(file, file)" should return true or false.
Does a file contain itself? Does a directory contains itself?
If you think of a directory as a collection of files and directories, it does
not, unless "." is listed.
> Add new function FileUtils.isContained
> --------------------------------------
>
> Key: IO-291
> URL: https://issues.apache.org/jira/browse/IO-291
> Project: Commons IO
> Issue Type: New Feature
> Components: Utilities
> Affects Versions: 2.1
> Reporter: Pier-Luc Caron St-Pierre
> Labels: patch
> Fix For: 2.1
>
> Attachments: FileUtils.isContained.patch
>
>
> I added a function that determines whether the specified leaf is contains by
> the specified composite.
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