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Calculate the modulo 97.

mod97 #

Calculates the MOD 97 10 of the passed number as specified in ISO7064.

Only positive numbers are allowed.

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Usage #

A simple usage example:

import 'package:mod97/mod97.dart';

main() {
  int m = mod97('1234567');
  
  int m2 = mod97('-123', onError: (_) => 5);
  // m2 will be 5
}

The input must be a String. Returned value is an integer.

Invalid characters throw a FormatException unless an onError function is provided.

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Calculate the modulo 97.

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