range static method

NiceValidationRule range(
  1. num min,
  2. num max, {
  3. String? message,
})

Numeric value must be in range.

Implementation

static NiceValidationRule range(num min, num max, {String? message}) =>
    (value) {
      if (value is num && (value < min || value > max)) {
        return message ?? 'Value must be between $min and $max';
      }
      return null;
    };