maybeMap<TResult extends Object?> method

  1. @optionalTypeArgs
TResult maybeMap<TResult extends Object?>({
  1. TResult item(
    1. UnitItem value
    )?,
  2. TResult ssCC(
    1. UnitSSCC value
    )?,
  3. TResult ph(
    1. UnitPH value
    )?,
  4. required TResult orElse(),
})

A variant of map that fallback to returning orElse.

It is equivalent to doing:

switch (sealedClass) {
  case final Subclass value:
    return ...;
  case _:
    return orElse();
}

Implementation

@optionalTypeArgs TResult maybeMap<TResult extends Object?>({TResult Function( UnitItem value)?  item,TResult Function( UnitSSCC value)?  ssCC,TResult Function( UnitPH value)?  ph,required TResult orElse(),}){
final _that = this;
switch (_that) {
case UnitItem() when item != null:
return item(_that);case UnitSSCC() when ssCC != null:
return ssCC(_that);case UnitPH() when ph != null:
return ph(_that);case _:
  return orElse();

}
}