How to check tabController for null?

Question

Can you please tell me how can I check tabController for null:

final CupertinoTabController? tabController = CupertinoTabController(initialIndex: 0);

Answer 1

A simple conditional check would do it for you

if (tabController != null) {
 // code for tabController is not null
} 
else {
 // code for tabController is null
}

A ternary operator can be used too

(tabController != null) ? codeForNotNull : codeForNull

Reference: official docs