when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. String absolutePath,
    2. int sizeBytes,
    3. int lastModifiedMillis,
    4. int unixMode,
    5. int uid,
    6. int gid,
    7. PrivFileType type,
    )
)

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 absolutePath,  int sizeBytes,  int lastModifiedMillis,  int unixMode,  int uid,  int gid,  PrivFileType type)  $default,) {final _that = this;
switch (_that) {
case _PrivFileMetadata():
return $default(_that.absolutePath,_that.sizeBytes,_that.lastModifiedMillis,_that.unixMode,_that.uid,_that.gid,_that.type);case _:
  throw StateError('Unexpected subclass');

}
}