forEach Side Effects
forEach Side Effects
forEach is often used when each callback call should update outside state. The callback return value is ignored, so returning true from inside the callback does not build a result for you.
That distinction matters in dashboards, import scripts, and cleanup jobs where you want to count, log, or trigger work for each matching item.
Your task: Complete countCompletedTasks so it returns how many tasks are marked complete. The function should work for any task list, including an empty one.
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forEach Side Effects
forEach is often used when each callback call should update outside state. The callback return value is ignored, so returning true from inside the callback does not build a result for you.
That distinction matters in dashboards, import scripts, and cleanup jobs where you want to count, log, or trigger work for each matching item.
Your task: Complete countCompletedTasks so it returns how many tasks are marked complete. The function should work for any task list, including an empty one.