numbersBetweenInterval static method
Validatorless.numbersBetweenInterval(1, 10, 'enter a value between min and max')
Implementation
static FormFieldValidator numbersBetweenInterval(
double min,
double max,
String message,
) {
return (v) {
if (v?.isEmpty ?? true) return message;
if (double.tryParse(v) == null) return message;
if (double.parse(v) < min || double.parse(v) > max) return message;
return null;
};
}