Flatten: Flatten a nested array (the nesting can be to any depth).
Intersection: Gets the intersection between two arrays (i.e. the elements that are present in both arrays).
Difference: Gets the difference between two arrays (i.e. the elements that are present in the first array, but not in the second).
Flatten: Flatten a nested array (the nesting can be to any depth). Intersection: Gets the intersection between two arrays (i.e. the elements that are present in both arrays). Difference: Gets the difference between two arrays (i.e. the elements that are present in the first array, but not in the second).