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[ruby/csv] Add missing file doc/argument_io.rdoc (#140)

https://github.com/ruby/csv/commit/e37f04aa5c
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Burdette Lamar 2020-06-15 16:43:36 -05:00 committed by Nobuyoshi Nakada
parent 013cca1f9a
commit 9901bb4c73
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Notes: git 2020-07-20 03:35:37 +09:00

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doc/argument_io.rdoc Normal file
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* Argument +io+ should be an IO object that is:
* Open for reading; on return, the IO object will be closed.
* Positioned at the beginning.
To position at the end, for appending, use method CSV.generate.
For any other positioning, pass a preset \StringIO object instead.