Feature Request "IndicesWhere"

[gnudles]

On List, add extension of "IndicesWhere" that returns iterable of the indices in the array where a certain condition met.

[ilovelinux]

Could you please show us some use cases where you need only the indices of the array?

If you want both indices and values you can mix asMap with where. Example:

final listOfNumbers = [1, 2, 3, 4];
final evenNumbers = listOfNumbers.asMap().entries.where((entry) => entry.value % 2 == 0);
// [MapEntry(1: 2), MapEntry(3: 4)]

evenNumbers will be an iterable with MapEntries. Each MapEntry will have a key, which is the array index of that value, and a value, which is the corresponding value of that index in the array.

[passsy]

What you're looking for is filterIndexed which already exists

final list = ['a', 'bb', 'ccc'].filterIndexed((element, index) => index.isEven);
print(list); // (a, ccc)