maybeMap<TResult extends Object?> method

  1. @optionalTypeArgs
TResult maybeMap<TResult extends Object?>({
  1. TResult initial(
    1. _Initial value
    )?,
  2. TResult loading(
    1. _Loading value
    )?,
  3. TResult success(
    1. _Success value
    )?,
  4. TResult error(
    1. _Error value
    )?,
  5. 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( _Initial value)?  initial,TResult Function( _Loading value)?  loading,TResult Function( _Success value)?  success,TResult Function( _Error value)?  error,required TResult orElse(),}){
final _that = this;
switch (_that) {
case _Initial() when initial != null:
return initial(_that);case _Loading() when loading != null:
return loading(_that);case _Success() when success != null:
return success(_that);case _Error() when error != null:
return error(_that);case _:
  return orElse();

}
}