validateStartBeforeEnd function

String? validateStartBeforeEnd(
  1. num start,
  2. num end, {
  3. String startName = _kDefaultStartName,
  4. String endName = _kDefaultEndName,
})

Returns null if valid, else error message. Audited: 2026-06-12 11:26 EDT

Implementation

String? validateStartBeforeEnd(
  num start,
  num end, {
  String startName = _kDefaultStartName,
  String endName = _kDefaultEndName,
}) {
  if (start <= end) return null;
  return '$startName must be <= $endName';
}