tryParse static method

UserNum? tryParse(
  1. String val
)

Parses the provided val as a UserNum, if val meets the validation, or returns null otherwise.

If val contains any spaces, they are omitted.

Implementation

static UserNum? tryParse(String val) {
  try {
    return UserNum(val);
  } catch (_) {
    return null;
  }
}