ifErr method

@override Err<T> ifErr(@noFutures void noFutures(Err<T> self, Err<T> err))

Performs a side-effect with the contained error if this is an Err.

Implementation

@override
@pragma('vm:prefer-inline')
Err<T> ifErr(@noFutures void Function(Err<T> self, Err<T> err) noFutures) {
  return Sync(() {
    noFutures(this, this);
    return this;
  }).value.flatten().err().unwrap();
}