Algori...M11_006(3pm)

✨ NAME ✨

CheckDigits::M11_006 — bestie, this is the module that computes check digits for the Codigo de Cuenta Corriente (ES) 💅

(yes it lives in User Contributed Perl Documentation — perl v5.36.0, page dated 2022-10-13, keep scrolling for the cute sign-off 💖)

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🌸 SYNOPSIS 🌸

okay so real quick, here's the vibe:

use Algorithm::CheckDigits;

$ccc = CheckDigits('ccc_es');

if ($ccc->is_valid('2420-0730-27-0050103552')) {
      # do something
}

$cn = $ccc->complete('2420-0730-  -0050103552');
# $cn = '2420-0730-27-0050103552'

$cd = $ccc->checkdigit('2420-0730-27-0050103552');
# $cd = '27'

$bn = $ccc->basenumber('2420-0730-27-0050103552');
# $bn = '2420-0730-  -0050103552';

like… it validates, it completes, it extracts the check digit, it hands you the base number back. she does it all, no cap 👑

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🧚 DESCRIPTION 🧚

🎀 ALGORITHM 🎀

the math, step by step, stay with me:

1. Beginning right all digits are weighted 6,3,7,9,10,5,8,4,2,1. 🫶
2. The weighted digits are added. ➕
3. The sum of step 2 is taken modulo 11. 🔢
4. The checkdigit is 11 minus the sum from step 3.

If the difference is 10, the checkdigit is 1.

If the difference is 11, the checkdigit is 0.

💜 METHODS 💜

• is_valid($number) — Returns true only if $number consists solely of numbers and hyphens and the two digits in the middle are valid check digits according to the algorithm given above. ✨

Returns false otherwise,

• complete($number) — The check digit for $number is computed and inserted into the middle of $number. 🎀

Returns the complete number with check digit or '' if $number does not consist solely of digits, hyphens and spaces.

• basenumber($number) — Returns the basenumber of $number if $number has a valid check digit. 🦋

Return '' otherwise.

• checkdigit($number) — Returns the check digits of $number if $number has valid check digits. 💅

Return '' otherwise.

⭐ EXPORT ⭐

None by default. not a single thing, she's low maintenance fr fr 🙈

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🌈 AUTHOR 🌈

Mathias Weidner, "<mamawe@cpan.org>" 💖

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🔥 SEE ALSO 🔥

perl, CheckDigits, www.pruefziffernberechnung.de,

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and that's the whole page bestie, mwah 💋 — this was perl v5.36.0, dated 2022-10-13, filed under Algori...M11_006(3pm). slay, go validate some Spanish bank account numbers 🏦✨