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July 5, 2019 14:32
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UPC-12 validation
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| ['101010101012','614141000036','036000241457','613119000030','614141000035','036000241450','614141000030'] | |
| .map(upc=>!(upc.split``.reduce((u,p,c)=>u+p*(3+c*2&3),0)%10)) | |
| // [true, true, true, true, false, false, false] |
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