tryParse static method Null safety

DateTime? tryParse(
  1. String formattedString

Constructs a new DateTime instance based on formattedString.

Works like parse except that this function returns null where parse would throw a FormatException.


static DateTime? tryParse(String formattedString) {
  // TODO: Optimize to avoid throwing.
  try {
    return parse(formattedString);
  } on FormatException {
    return null;