between method
Makes sure the value is between min
and max
Implementation
ValidatorNumber between(num min, num max,
{String Function(num min, num max)? errMsg}) {
validate((v) {
num? number = _numValue();
if (!number.isBetween(min, max)) {
return errMsg == null
? 'Must be between $min and $max'
: errMsg(min, max);
}
return null;
});
return this;
}