Luhn test of credit card numbers: Difference between revisions
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$ echo 1234567812345670 | beef luhn.bf
Pass</pre>
=={{header|Bruijn}}==
<syntaxhighlight lang="bruijn">
:import std/Combinator .
:import std/Math .
:import std/List .
luhn number→list → reverse → check → (\mod (+10)) → zero?
check y [[[[0 [[[6 \5 (4 + (5 odd even)) 1]]] 1]]]] k (+0)
odd 2
even digit-sum (2 ⋅ (+2))
:test (luhn (+61789372994)) ([[1]])
:test (luhn (+49927398716)) ([[1]])
:test (luhn (+49927398717)) ([[0]])
:test (luhn (+1234567812345678)) ([[0]])
:test (luhn (+1234567812345670)) ([[1]])
</syntaxhighlight>
=={{header|Burlesque}}==
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