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Calling stat on all the files is just really expensive if your directly is large.

See the Reddit for an alternative to FileInfo.

FileInfo is an interface, isn't it? You could populate fields other than "name" lazily, right?

You can't because the interface doesn't allow any errors. Lazily populating data is usually fallible, and the interface's methods are all infallible.

OK, I'm convinced. Not a great interface, should just return an iterator.