getDoubleOrNull method

double? getDoubleOrNull(
  1. Object? key
)

Implementation

double? getDoubleOrNull(Object? key) {
  final value = this[key];
  if (value is double) return value;
  if (value is num) return value.toDouble();
  if (value is String) return double.tryParse(value.trim());
  return null;
}