whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. String userId,
    2. String badgeId,
    3. DateTime earnedAt,
    4. String? badgeName,
    5. String? badgeDescription,
    6. String? badgeIconKey,
    )?
)

A variant of when that fallback to returning null

It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case _:
    return null;
}

Implementation

@optionalTypeArgs TResult? whenOrNull<TResult extends Object?>(TResult? Function( String userId,  String badgeId,  DateTime earnedAt,  String? badgeName,  String? badgeDescription,  String? badgeIconKey)?  $default,) {final _that = this;
switch (_that) {
case _UserBadge() when $default != null:
return $default(_that.userId,_that.badgeId,_that.earnedAt,_that.badgeName,_that.badgeDescription,_that.badgeIconKey);case _:
  return null;

}
}