maxLength method Null safety

String? maxLength(
  1. String? value,
  2. {String? message,
  3. required int length}
)

Check if the value's length is less than or equal to the given maximum length.

Implementation

static String? maxLength(String? value, {String? message, required int length}) =>
    value == null || value.isEmpty || value.length <= length ? null : message ?? 'Please enter a valid length';