prefer_is_not_empty
Use 'isNotEmpty' rather than negating the result of 'isEmpty'.
Description
#The analyzer produces this diagnostic when the result of invoking
Iterable.isEmpty or Map.isEmpty is negated.
Example
#The following code produces this diagnostic because the result of invoking
Iterable.isEmpty is negated:
dart
void f(Iterable<int> p) => !p.isEmpty ? p.first : 0;Common fixes
#Rewrite the code to use isNotEmpty:
dart
void f(Iterable<int> p) => p.isNotEmpty ? p.first : 0;