getNumber function
Get number of password/passphrase to generate as int from cli arguments
Implementation
int getNumber(List<String> arguments) {
const defaultNumber = 1;
var option = extractOption('-n', '--number', arguments);
if (option != null && option.isNotEmpty) {
var number = int.tryParse(option);
if (number != null) {
return number;
}
}
return defaultNumber;
}