nixir

# Test list concatenation operator ++

let

  list1 = [1 2 3];

  list2 = [4 5 6];

  empty = [];

in {

  # Basic concatenation

  combined = list1 ++ list2;

  # Concatenate with empty list

  with_empty = list1 ++ empty;

  # Nested concatenation

  triple = [1] ++ [2] ++ [3];

}