when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. String userId,
    2. String displayName,
    3. int totalXp,
    4. int rank,
    5. int streak,
    )
)

A switch-like method, using callbacks.

As opposed to map, this offers destructuring. It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case Subclass2(:final field2):
    return ...;
}

Implementation

@optionalTypeArgs TResult when<TResult extends Object?>(TResult Function( String userId,  String displayName,  int totalXp,  int rank,  int streak)  $default,) {final _that = this;
switch (_that) {
case _LeaderboardEntryModel():
return $default(_that.userId,_that.displayName,_that.totalXp,_that.rank,_that.streak);case _:
  throw StateError('Unexpected subclass');

}
}