whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. DynamicFieldName name,
    2. String bcsName,
    3. String type,
    4. String objectType,
    5. String objectId,
    6. int version,
    7. String digest,
    )?
)

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( DynamicFieldName name,  String bcsName,  String type,  String objectType,  String objectId,  int version,  String digest)?  $default,) {final _that = this;
switch (_that) {
case _DynamicFieldInfo() when $default != null:
return $default(_that.name,_that.bcsName,_that.type,_that.objectType,_that.objectId,_that.version,_that.digest);case _:
  return null;

}
}