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IBAN: Difference between revisions
→{{header|Ruby}}
(→C: Add implementation) |
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=={{header|Ruby}}==
{{works with|Ruby|1.9+}}
<lang Ruby>def valid_iban? iban
len = {
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# Shift and convert.
iban = iban[4..-1] + iban[0, 4]
iban.gsub!(/
iban.to_i % 97 == 1
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