idCard18 constant

String const idCard18

Regex of id card number which length is 18.

Implementation

static const String idCard18 =
    "^[1-9]\\d{5}[1-9]\\d{3}((0\\d)|(1[0-2]))(([0|1|2]\\d)|3[0-1])\\d{3}([0-9Xx])\$";