maybeMap<TResult extends Object?> method

  1. @optionalTypeArgs
TResult maybeMap<TResult extends Object?>({
  1. TResult success(
    1. _Success value
    )?,
  2. TResult failure(
    1. _Failure value
    )?,
  3. TResult info(
    1. _Info value
    )?,
  4. TResult warning(
    1. _Warning 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( _Success value)?  success,TResult Function( _Failure value)?  failure,TResult Function( _Info value)?  info,TResult Function( _Warning value)?  warning,required TResult orElse(),}){
final _that = this;
switch (_that) {
case _Success() when success != null:
return success(_that);case _Failure() when failure != null:
return failure(_that);case _Info() when info != null:
return info(_that);case _Warning() when warning != null:
return warning(_that);case _:
  return orElse();

}
}