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instance method

CSV#to_io

to_io

# File tmp/rubies/ruby-3.1.3/lib/csv.rb, line 2292
def to_io
  @io.respond_to?(:to_io) ? @io.to_io : @io
end

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See also #to_i #unconverted_fields? #stat #write_headers? also in 3.3 · 3.2 · 3.0