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How to check for file existence

#1
Is there a Ruby class/method where I could pass "a full path", `home/me/a_file.txt`, to identify whether it is a valid file path?

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#2
# file? will only return true for files
File.file?(filename)

and

# Will also return true for directories - watch out!
File.exist?(filename)

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#3
Check out [Pathname](

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) and in particular [`Pathname#exist?`](

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).

[File](

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) and its [FileTest](

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) module are perhaps simpler/more direct, but I find `Pathname` a nicer interface in general.
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