Helpers for builtin arrays ...
| Add | Appends item to the end of array. |
| AddRange | Appends items to the end of array. |
| ArrayEquals | Compares two arrays. |
| Clear | Clears the array. |
| Contains | Determines if the array contains the item. |
| FindIndex | Find the index of the first element that satisfies the predicate. |
| IndexOf | Index of first element with value value. |
| Insert | Inserts item item at position index. |
| LastIndexOf | Index of the last element with value value. |
| Remove | Removes item from array. |
| RemoveAt | Remove element at position index. |