Azure logic apps - how to create unique array from dynamic array?

Question

i have dynamic array, meaning the value and length depends on my REST API call result.

i need to make that array has unique or distinct value, meaning the value inside the array must be unique to each other.

ANy idea?

Thanks

Answer 1

The linked comment using union shows how but does a bit more than the original request so those that want the very simple answer to the question - how do I get the unique/distinct values from an array - all you do is union the array with itself, i.e.

and the expression in the 2nd initialise just does:

union(variables('TestArray'),variables('TestArray'))