ISBN13 check digit: Difference between revisions
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Langurmonkey (talk | contribs) →{{header|langur}}: added langur 0.7.1 example |
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=={{header|langur}}==
{{works with|langur|0.7.1}}
<lang langur>val .isbn13checkdigit = f(var .
fold(f{+}, map([_, f .d x 3], map(f .c-'0', s2cp .s))) rem 10 == 0
}
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