'How to write an expression into a method?

How can I write the expression into a separate method for optimization:

final listOfKeys= [_firstTabNavKey, _secondTabNavKey, _thirdTabNavKey]

onWillPop: () async {
            return !(await listOfKeys[tabController.index]
                    .currentState
                    ?.maybePop() ??
                false);
          },

flutter dart

Solution 1:^[1]

Like this ?

Future<bool> _popBack() async {
   return !(await listOfKeys[tabController.index].currentState?.maybePop() ?? false);
}

onWillPop: _popBack,

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Solution 1

'How to write an expression into a method?

Solution 1:[1]

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Related Questions

Solution 1:^[1]