whenOrNull<TResult extends Object?> method
TResult?
whenOrNull<TResult extends Object?>()
A variant of when that fallback to returning null
It is equivalent to doing:
switch (sealedClass) {
case Subclass(:final field):
return ...;
case _:
return null;
}
Implementation
@optionalTypeArgs TResult? whenOrNull<TResult extends Object?>(TResult? Function( Market market, List<Language> availableLanguages, Currency currency, String isoCode, String name, String unitSystem)? $default,) {final _that = this;
switch (_that) {
case _Country() when $default != null:
return $default(_that.market,_that.availableLanguages,_that.currency,_that.isoCode,_that.name,_that.unitSystem);case _:
return null;
}
}