code-wars/8 kyu/Counting sheep.../Counting sheep.md

8 kyu - Counting sheep... - Authored by tfKamran

Consider an array/list of sheep where some sheep may be missing from their place. We need a function that counts the number of sheep present in the array (true means present).

For example,

[True, True, True, False, True, True, True, True , True, False, True, False, True, False, False, True , True, True, True, True , False, False, True, True]

The correct answer would be 17.

Hint: Don't forget to check for bad values like null/undefined.