sequence.nth(index) → object
selection.nth(index) → selection<object>
Get the nth element of a sequence, counting from zero. If the argument is negative, count from the last element.
Example: Select the second element in the array.
r.expr([1,2,3]).nth(1).run(conn)
r.expr([1,2,3])[1].run(conn)
Example: Select the bronze medalist from the competitors.
r.table('players').order_by(:index => r.desc('score')).nth(3).run(conn)
Example: Select the last place competitor.
r.table('players').order_by(:index => r.desc('score')).nth(-1).run(conn)
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