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cbrevik/new_ssn.csx

Created June 29, 2020 19:22
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new_ssn.csx
int birthYear = (ruleNumber, year) switch
{
// Rule 1. 500–749: 1854–1899
(>= 500 and <= 749, >= 54) => 1800 + year,
// Rule 2. 000–499: 1900–1999
(< 500, _) => 1900 + year,
// Rule 3. 900–999: 1940–1999
(>= 900, >= 40) => 1900 + year,
// Rule 4. 500–999: 2000–2039
(>= 500, <= 39) => 2000 + year,
// No rule
(_, _) => 0
};
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