In Ruby, why does end_with?("") always return true for any string?

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Peter Schneider
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In Ruby, why does end_with?("") always return true for any string?
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(stackoverflow.com/users/664675/rii)rii
(stackoverflow.com/users/2988/j%c3%b6rg-w-mittag)Jörg W Mittag
(stackoverflow.com/users/15261315/chris)Chris
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ruby