This performs an action on each element of a collection: list, array, dictionary, or enumerable.
List<int> list = new List<int> { 1, 2, 3 };
list .ForEach(num => Debug.Log(num));
int[] array = new int[] { 1, 2, 3 };
array.ForEach(num => Debug.Log(num));
Dictionary<string, int> dictionary = new Dictionary<string, int> { { "Alice", 100 }, { "Bob", 80 } };
dictionary.ForEach((key, value) => Debug.Log($"{key}: {value}"));
IEnumerable<int> enumerable = new List<int> { 1, 2, 3 };
enumerable.ForEach(num => Debug.Log(num));
