maybeMap<TResult extends Object?> method

  1. @optionalTypeArgs
TResult maybeMap<TResult extends Object?>({
  1. TResult context(
    1. _ValueBuilderContext<T> value
    )?,
  2. TResult ref(
    1. _ValueBuilderRef<T> value
    )?,
  3. TResult value(
    1. _ValueBuilderValue<T> 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( _ValueBuilderContext<T> value)?  context,TResult Function( _ValueBuilderRef<T> value)?  ref,TResult Function( _ValueBuilderValue<T> value)?  value,required TResult orElse(),}){
final _that = this;
switch (_that) {
case _ValueBuilderContext() when context != null:
return context(_that);case _ValueBuilderRef() when ref != null:
return ref(_that);case _ValueBuilderValue() when value != null:
return value(_that);case _:
  return orElse();

}
}