maybeMap<TResult extends Object?> method

  1. @optionalTypeArgs
TResult maybeMap<TResult extends Object?>({
  1. TResult deposit(
    1. QuoteStepDeposit value
    )?,
  2. TResult transaction(
    1. QuoteStepTransaction value
    )?,
  3. 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( QuoteStepDeposit value)?  deposit,TResult Function( QuoteStepTransaction value)?  transaction,required TResult orElse(),}){
final _that = this;
switch (_that) {
case QuoteStepDeposit() when deposit != null:
return deposit(_that);case QuoteStepTransaction() when transaction != null:
return transaction(_that);case _:
  return orElse();

}
}