ios.rewind รข 0
Instance Public methods
Positions ios to the beginning of input, resetting
lineno to zero.
f = File.new("testfile")
f.readline #=> "This is line one\n"
f.rewind #=> 0
f.lineno #=> 0
f.readline #=> "This is line one\n"
Note that it cannot be used with streams such as pipes, ttys, and sockets.
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