python generate secret key
>>> import secrets
>>> secrets.token_bytes(16)
b'xebrx17D*txaexd4xe3Sxb6xe2xebP1x8b'
>>> secrets.token_hex(16)
'f9bf78b9a18ce6d46a0cd2b0b86df9da'
>>> token_urlsafe(16)
'Drmhze6EPcv0fN_81Bj-nA'python generate secret key
>>> import secrets
>>> secrets.token_bytes(16)
b'xebrx17D*txaexd4xe3Sxb6xe2xebP1x8b'
>>> secrets.token_hex(16)
'f9bf78b9a18ce6d46a0cd2b0b86df9da'
>>> token_urlsafe(16)
'Drmhze6EPcv0fN_81Bj-nA'javascript ean13 checksum generate
function getLastEan13Digit(ean) {
if (!ean || ean.length !== 12) throw new Error('Invalid EAN 13, should have 12 digits');
const multiply = [1, 3];
let total = 0;
ean.split('').forEach((letter, index) => {
total += parseInt(letter, 10) * multiply[index % 2];
});
const base10Superior = Math.ceil(total / 10) * 10;
return base10Superior - total;
}Copyright © 2021 Codeinu
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